EP1068143B1 - Ring lift crane - Google Patents

Ring lift crane Download PDF

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Publication number
EP1068143B1
EP1068143B1 EP99924722A EP99924722A EP1068143B1 EP 1068143 B1 EP1068143 B1 EP 1068143B1 EP 99924722 A EP99924722 A EP 99924722A EP 99924722 A EP99924722 A EP 99924722A EP 1068143 B1 EP1068143 B1 EP 1068143B1
Authority
EP
European Patent Office
Prior art keywords
ring
crane
fact
counterweight
bridge
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
EP99924722A
Other languages
German (de)
French (fr)
Other versions
EP1068143A2 (en
Inventor
Alexander Knecht
Manfred Kretschmer
Michael Biermann
Ralf Frankenberger
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
Demag Mobile Cranes 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 DE19914195A external-priority patent/DE19914195A1/en
Application filed by Demag Mobile Cranes GmbH and Co KG filed Critical Demag Mobile Cranes GmbH and Co KG
Publication of EP1068143A2 publication Critical patent/EP1068143A2/en
Application granted granted Critical
Publication of EP1068143B1 publication Critical patent/EP1068143B1/en
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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • 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
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76—Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
    • 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
    • B66C23/84—Slewing gear

Definitions

  • the invention relates to a ring lift crane according to the preamble of Claim 1.
  • a well-known ring lift crane is in the Mannesmann Demag construction machinery company brochure "Ring lift Granes" CC 2000 RL; CC 4000 RL, edition 11/82.
  • This Ring lift crane has a ring that can be erected and a circular lane on, which consists of several interconnectable segments.
  • Within the Ringes is an undercarriage and one that is rotatably connected and several winches having superstructure arranged.
  • the superstructure is included in both end areas each connected to an adapter, which is arranged on the adapters via Swinging interconnected roller sets on the circular track of the ring support rolling.
  • the center of the ring or undercarriage is the center of this the axis of rotation.
  • One adapter is for holding a counterweight and one other adapter as a support element for one articulated at the free end of the adapter arrangable boom designed.
  • the rotary movement of the ring lift crane is by means of a ring gear arranged on the inside of the ring and therein engaging pinion mounted on rockers.
  • To stabilize the Overall construction is the undercarriage with different reinforcement struts Sections of the ring connected.
  • This Ring lift crane consists of a stand-up ring that forms a circular track and a construction within the ring with a kingpin and one Platform which is provided with a sleeve for receiving the kingpin.
  • the platform is connected to an adapter in each of the two end areas Support roller sets arranged on the adapters by rolling on the ring, whereby the center of the ring forms the axis of rotation for the platform.
  • the one-piece ring is secant and within the Stiffened ring struts.
  • two parallel struts each have a piston-cylinder unit arranged on their a support leg can be arranged at the free end.
  • the caterpillar can be locked with the support element. In this way, the ring lift crane is considered The whole can be moved.
  • a disadvantage of the latter construction is that the size of the Ring diameter and thus the maximum load capacity is limited. Besides, is the type of connection of the ring lift crane with the transport unit cumbersome. Furthermore, the undivided ring requires a lot of space when moving the ring lift crane depending on the local conditions at the place of use is not always available.
  • a generic ring lift crane is known from US-PS 4,196,816. This consists of a stand-up, a circular lane and several ring having interconnectable segments, within which a Undercarriage is arranged, one rotatably connected and several Superstructure with winches and two at a parallel distance from each other has lying bridge girders, which are in two opposite one another Provide end areas with an adapter and the crossbar with the The uppercarriage can be connected and unlocked.
  • the adapters are supported by arranged rollers unrolling on the circular lane of the ring, the The center of the ring or the undercarriage forms the axis of rotation.
  • One adapter is to hold a counterweight and the other adapter to hold one articulated boom.
  • To generate the rotary movement of the Ringliftkranes is a sprocket arranged, its rotary motion on the two Bridge girder is transmitted.
  • the undercarriage is attached with stiffening struts different sections of the ring connected.
  • the disadvantage here is that the components of the crane when swiveling and driving are supported on the ring and thus on the undercarriage. Because of too little The drive power of the crawlers must first be for driving and swiveling Counterweight reductions are made. Because the counterweight is not can be moved, further disassemblies are required to balance the crane (e.g. Boom parts) required. So that the crane can swing or drive, it must on Ring are supported and the support plates are either to be removed completely or turn them all up individually.
  • the crane e.g. Boom parts
  • the object of the invention is to provide a ring lift crane of the generic type, which is space-saving in a simple manner and without counterweight reductions and without Partial disassembly can be pivoted and moved.
  • many components can be used as modules for different ring lift classes.
  • the bridge girders can be lifted in and in relation to the basic device are non-positively connectable to the cross members, in which Starting position, the positive connection between the bridge girders and the cross members has a predetermined play and several for the rotary movement Identical two axles and wheels attached to them Ring wagons are provided, on the one hand with the bridge girders and on the other hand are positively connectable to the ring or a ring segment. At least an axis of the arranged under the boom or under the counterweight Ring carriage can be driven.
  • the previously customary ring gear and the elaborate pinion drive is eliminated.
  • each cross girder arranged standing bolt having a stop.
  • the stop works together with a bearing block that surrounds the bolt Bridge girder is attached.
  • the distance between the top of the cross member and the plate of the bolt on the one hand and the distance between the base plate of the bearing block to stop the bolt on the other hand can by on the top of the Cross-member sliding spacer plates partially or almost completely filled become.
  • the spacer plates can be bolted and deblocked using driver pins.
  • each bridge support consists of the normal one Road transport suitable sections that can be bolted and deblocked.
  • Each bridge girder is preferably on each end face an elbow attached at its free end to the piston-cylinder unit is connectable.
  • the ring in a known manner from several interconnectable segments consists of several segments in a space-saving manner before the process of Cranes can be dismantled. Two opposing segments are with the Bridge girders can be locked via the ring trolleys and can be moved along. The tangential extent of these lockable segments corresponds at most the width extension of the counterweight.
  • the ring car be supported on two concentric rings leave so that the Hertzian pressure for the in contact with the ring surface stationary wheels remain below the permissible maximum value.
  • the Split the total load in half onto two rings.
  • Around the ring carriage in the circumferential direction To be able to move the two rings are two opposite each other Carriage connected to each other via a link arm.
  • Two on the inside Ring and two carriages arranged on the outer ring form a unit and form the minimum car population.
  • Such a unit can be combined with another similar unit can be connected to each other via a bridge element.
  • the Linking the car with each other is designed as a plug-in connection.
  • the maximum number of ring carriages that can be arranged on a ring is equal to or less than the arc length of the individual ring segment divided by the length of the ring carriage.
  • the angular section of the ring segment is preferably 60 degrees.
  • the Ring trolleys are constructed identically and are suitable for a ring with a small one Diameter, e.g. B. 21 meters and for a ring with a large diameter, e.g. B. 32 meters. This is realized in such a way that the through the intersecting Center lines of the two axes result in included angles of the mean is between the angle for the smallest and the angle for the largest Ring diameter.
  • the resulting impairments in the rolling behavior of the Ring carriages with a ring diameter deviating from the mean value become aware accepted.
  • the different rolling path of the on the outer area of the Ring rolling wheel compared to the rolling on the inner area Wheel is balanced by a different diameter. So that Ring wagons, however, continue to lie horizontally, the ring track becomes an exterior and an exterior Inner track divided with an intermediate step, the height of which is half Wheel diameter difference corresponds.
  • the positive connection between Ring trolley and ring or ring segment is arranged on the ring trolley Support plates that are provided with a hook roller at the end. These are among the Upper chord of the ring and thus limit lifting of the ring carriage.
  • the center of gravity of the ring lift crane is, among other things, essentially determined by the Positioning of the counterweight in relation to the basic device is determined. to A change in this focus is therefore proposed under the platform for the counterweight to arrange counterweight car, whose wheels on the Unroll the top of the bridge girders. In the same sense will continue suggested lying in the area of the counterweight end of the two Bridge girder an extension of the bridge girder projecting beyond the ring to arrange. Both measures have the following advantages: The counterweight can be moved from the position of the normal working position to the counterweight car Towards the center of rotation. This will optimize the focus for moving the ring lift crane on site.
  • the Ring lift crane has a modular structure and as many standardized components as possible be used. This starts with the undercarriage and superstructure, the components of a standard crane. This continues through the boom used and the Winches, as well as the crane cab.
  • the boom can be used as a single or as so-called double boom can be formed.
  • the latter construction has the Advantage that the individual elements of a lower sick class assembled double boom are easier to transport and a can transmit a higher load torque than that from a larger crane class single boom used.
  • the multi-section Bridge supports can be used for a single ring as well as for a double ring.
  • the Ring wagons are typed and depending on the load to be transferred the number of Ring wagon increased or decreased and linked accordingly. To the To simplify assembly and disassembly, wherever possible, with Plug connections worked so that individual components by means of an auxiliary crane can be raised and inserted.
  • FIGS 1-3 are a side view and two views in the X and Y directions an inventive ring lift crane 1 is shown. It consists in this embodiment of a main boom 2, a mast 3, a Auxiliary boom 4 and two luffing supports 5, 6. There is one on the head of the auxiliary boom 4 Head roller 7 arranged over which the hoist rope 8 runs. On a hanging on the lifting rope 8 Bottom block 9 has a double hook 10 rotatably arranged.
  • the upper rocker support 5 is via a fixed guying 11 with the head of the auxiliary boom 4 and via a changeable guying 12 connected to the second luffing support 6.
  • the lower one The luffing support 6 is in turn connected to the foot region of the foot by means of a fixed guying 13 Main boom 2 connected.
  • the mast 3 is changeable on the one hand Guy 14 with the head of the main boom 2 and a fixed guy 15 connected to the ends of two parallel bridge supports 17, 17 '(FIG. 2), which form the supporting element for the crane structures and the counterweight 16, wherein both end regions are designed as adapters 24, 25.
  • On the front adapter 24 is the The main boom 2 and the mast 3 are articulated and attached to the rear adapter 25 the counterweight 16 rests.
  • Both adapters 24, 25 are supported by the ones indicated here Ring carriage 18 (see Figure 8) on a ring 20 forming a circular lane, the can be erected over supports 21.
  • the core of the ring lift crane 1 forms one standardized undercarriage, here in the form of a crawler track 22 and one standardized superstructure 23 rotatably arranged thereon.
  • one standardized undercarriage here in the form of a crawler track 22 and one standardized superstructure 23 rotatably arranged thereon.
  • two cross members 26, 27 are provided, which serve to the Bridge girders 17, 17 'with the superstructure 23 in different ways to be able to lock.
  • the bridge girders 17, 17 ' also serve, as can be seen in FIG Main winches 28 - 31 to take up.
  • the bridge girders 17, 17 'form together with the adapters 24, 25 and the crossbeams 26, 27 have a rigid frame construction which, in is able to absorb corresponding loads.
  • a plurality of ring carriages 18 are arranged on the ring 20 in the front end region. In this exemplary embodiment, there are four ring carriages 18.
  • FIG. 3 shows a view in the direction Y of FIG. 1.
  • This illustration shows that on the ring lift crane 1 designed according to the invention an alternative Single boom or a double boom can be arranged.
  • Double boom is understood to be an arrangement in which one boom is a lower crane classes placed side by side in identical duplicates and by universal connector 32 - 34 for the main boom 2.1, 2.2 and Universal connector 35, 36 for the auxiliary boom 4.1, 4.2 connected together become.
  • This arrangement has the advantage that the individual elements of the main boom 2.1; 2.2 or the auxiliary boom 4.1; 4.2 easier to transport and handle and the liftable load torque is higher than that of a comparable one Is simple boom.
  • the partial picture 4b shows the first essential work step for the method of Ring lift cranes 1.
  • the known segmentation of the ring is used to in order to be able to dismantle the segments which disrupt the movement of the ring lift crane 1.
  • a sub-segment 20a remains in the area of the main boom 2 and the mast 3 and an opposing sub-segment 20e in the area of the counterweight 16.
  • the remaining segments 20b-20d and 20f-20h have been removed beforehand.
  • the arc length of the partial segment 20a lying in the jib area is so chosen that the ring car 18.1, 18.2 can be accommodated on it. It is advantageous that the tangential extension of a sub-segment 20a, 20e is not is greater than the width extent 40 for the counterweight holder 41, so that for the procedure does not require additional free space.
  • FIGS. 5a-5e The further work steps are shown in FIGS. 5a-5e.
  • the connection point has a foldable shoe 47.1. 47.4 to the after dismantling the piston-cylinder units 43.1 - 43.4 To be able to shorten the longitudinal extent of the ring lift crane 1.
  • To support the Loads on the floor are all piston-cylinder units 43.1 - 43.4 with one large support leg 44.1 - 44.4.
  • the sub-steps 5c and 5d are the work steps for lifting the ring lift crane 1 shown. This is by means of a holding system shown here in FIG Sub-segment 20a ( Figure 4b) of the double ring 20.1; 20.2 via the ring carriage 18.1; 18.2 connected to the bridge girders 17, 17 '. The same applies to that opposite sub-segment 20e. Now become the four at the ends arranged piston-cylinder units 43.1 - 43.4 is controlled, as in Figure 5 partial image d can be seen, the entire ring lift crane 1 together with the partial segments 20a, 20e raised.
  • the four piston-cylinder units 43.1 - 43.4 can be raised and the entire ring lift crane 1 is in a straight line either forward or can be moved backwards. This can be seen in partial image 5e by a double arrow 45 made.
  • FIG 6 shows an enlarged view of the holding system for connecting a Ring segment 20a with the bridge girders 17, 17 '.
  • FIG. 7 shows the possibility of moving the counterweight 16.
  • Around to be able to move the counterweight 16 are below the counterweight 16 Counterweight wagons 50, 51, 50 ', 51' arranged, their rollers on the top of the Bridge carrier 17, 17 'can roll.
  • the position of the marked with A Counterweight 16 represents the normal position. Should the ring lift crane 1, as previously in 4 and 5 are explained, the counterweight is advantageous 16 in the area of the axis of rotation 52 of the basic device. This shows the Position B shown with dashed lines. Such a position of the Counterweight 16 improves the center of gravity, so that the ring lift crane 1 can be moved safely and without risk of tipping.
  • the one with C marked position of the counterweight 16 shows the possibility that Move counterweight 16 outside of the ring 20.
  • FIG. 8a shows the details in a front view and FIG. 8b in a top view a ring carriage 18.
  • the ring carriage 18 consists of a frame 48 in which two Axes 49,49 'are mounted. Both axes 49, 49 'have a right angle deviating angle to the frame 48. Ideally, the center lines intersect of the two axes 49,49 'in the center of rotation of the superstructure.
  • One of the two Axes 49 ' has a stump 54 for the arrangement of a not shown here Drive on.
  • At the four corners of the frame 48 are double tabs 55-55 "' attached to which side guide rollers 46-46 "'are arranged.
  • the frame 48 is in the middle provided with a cross member 60, on each of which a support plate at both end regions 61,61 'is articulated and provided with a hook roller 62,62'.
  • the hook rollers 62,62 ' are supported on the underside of the top flange 57 of the ring 20.1.20.2 and limit the lifting of the ring carriage 18.
  • a pin 63 is attached in the center, so that, for example, two in a row arranged ring car 18.1,18.2 (Fig. 9a, b) can be plugged together.
  • the axes 49, 49 ' are supported by means arranged in the frame 48 Bearing elements 66-66 "'.
  • Figure 8c shows in a view in the direction X in Figure 8a the use of Ring carriage 18 as a connecting element between the rings 20.1, 20.2 or Ring segments 20a, 20e (see Figure 5b) and the bridge girders 17, 17 '.
  • This View is the reaching under the hook rollers 62,62 'under the top flange 57 of the ring clearly visible.
  • the ring carriage is supported on the side by Lateral guide rollers 46.46 "'.
  • the ring forming a circular lane consists of the already mentioned upper chord 57 and a lower chord 56 and connecting webs 65.65 '.
  • the ring can be raised by means of height-adjustable fastenings on the lower flange 56 Columns 21. This compensates for unevenness in the floor.
  • the axes 49 are arranged both wheels 58, 58 'have a different diameter. This is required to compensate for the different roll-off. That on the inside The area of the upper belt 57 rolling wheel 58 'is smaller in diameter than that on the outer area rolling wheel 58. So that the axis 49 continues horizontally remains, despite the different diameters of the two wheels 58,58 ', is the Upper belt 57 divided into an inner 74 and an outer web 75. In between a step, the height of which corresponds to half the wheel diameter difference. This means that the outer track 75 is lower than the inner track 74. At one assumed wheel diameter difference of 20 mm is thus the height of the 10 mm step. Despite the division into an inner 74 and an outer web 75, the Upper chord 57 made of sheet metal and the lower outer web 75 through mechanical processing (e.g. milling).
  • FIG 10 a-d are the essential steps of the sequence for a Swivel lock shown.
  • the upper drawing a shows the connection of the Cross member 26, 27 with a sub-element of the superstructure 23
  • Cross member 26, 27 a tab 71 attached to the sub-element of the superstructure 23 can be bolted and deboled.
  • the section A-A of the upper part a is shown in the middle part b. It shows the two right and left bridge girders 17, 17 'and the front intermediate cross member 26 ( Figure 2).
  • a standing bolt 72, 72 ' is arranged in each of the two end regions.
  • a stop here in the form of a circular plate 70,70 'attached.
  • the respective bolt 72, 72 ' cooperates with a bracket 73, 73 'attached to the bridge girder 17, 17'.
  • the bearing block is 73.73 ' constructed as a U-shaped box with two side walls 76 and one intermediate base plate 77.
  • the base plate 77 has an opening 78, through which the bolt 72, 72 'can be inserted (partial image d).
  • the bolt 72, 72 ' In the starting position is between the underside of the base plate 77 and the top of the cross member 26.27 there is a clearly recognizable game 79.79 '.
  • To set the different locking states are on the top of the cross member 26,27 several spacer plates 67, 67 'which can be displaced in the direction of the bolts 72, 72' arranged. The displacement takes place along guide rails 68, 68 '(FIG. 11 b, c).
  • the means for moving the spacer plates 67, 67 ' are not shown here.
  • a hydraulic piston-cylinder unit is preferably used for this.
  • the sequence of the swivel lock contains the following individual steps: A part of the spacer plates 67, 67 ', for example two, are displaced along the guide rails 68, 68' in the direction of the bolts 72, 72 'by means of a piston-cylinder unit, not shown here. Part of the distance between the top of the base plate 77 of the bearing block 73, 73 'and the underside of the plate 70, 70' of the bolt 72, 72 'is thus filled. Then the two bridge supports 17, 17 'are raised by means of the four piston-cylinder units 43.1 - 43.4 (FIG. 5b), as the two arrows show.
  • the slewing gear of the uppercarriage 23 is activated and, when the uppercarriage is at a standstill, the ring together with the undercarriage (crawler chassis) is pivoted into the desired position.
  • the four piston-cylinder units 43.1 - 43.4 are then vented and the bridge supports 17, 17 'are thereby lowered again.
  • the inserted spacer plates 67, 67' can be pulled out again along the guide rails 68, 68 'and bolted to the remaining spacer plates by means of driving pins 69, 69' ( Figure 11).
  • Partial image a shows the starting position as already described in FIG. 10b is.
  • Drawing b shows the first step.
  • the bridge girders 17, 17 ' lifted as far by means of the four piston-cylinder units 43.1 - 43.4, e.g. B. um 500 mm until the top of the base plate 77 of the bearing block 73.73 'on the Bottom of the plate 70,70 'comes to rest. In this way, space is created in order to be able to insert the whole package of spacer plates 67, 67 ', as in Partial d shown.
  • Figure 12 shows the work lock.
  • the aim is to be part of the Dead weight of the crane to increase the overall stability as much as possible mitheranzuteil. This is achieved in that in the starting position, comparable to that shown in FIG. 10c, part of the spacer plates 67, 67 'only in the case of rear cross member 27 are inserted. This will make the distance between Base plate 77 and plate 70,70 'largely filled.
  • Now on the hook of the Ring lift cranes are attached to a load, then the whole bends elastically Ring lift crane in such a way that front, d. H. in the area of the boom, the loads on the document, d. H. press the adapter 24, ring segment 20a, supports 21 while the rear part of the bridge girders 17, 17 'is bent up.

Abstract

A ringlift crane having a ring which can be elevated, forms an annular track and has a plurality of segments which can be connected to one another, there being arranged within said ring an undercarriage which has an upper carriage, which is connected for slewing action to the undercarriage and has a plurality of hoisting winches. Two trusses which are spaced apart parallel to one another, are provided, in two mutually opposite end regions, with in each case one adapter and can be bolted to, and unbolted from, the upper carriage via crossmembers. The adapters are supported with rolling action on the annular track of the ring by rollers arranged in the end region of the adapters. For the purpose of setting different modes of operation of the crane, the trusses can be raised relative to the basic machine and connected in different ways to the crossmembers.

Description

Die Erfindung betrifft einen Ringliftkran gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a ring lift crane according to the preamble of Claim 1.

Ein bekannter Ringliftkran ist im Firmenprospekt Mannesmann Demag Baumaschinen "Ringlift Granes" CC 2000 RL; CC 4000 RL, Ausgabe 11/82 dargestellt. Dieser Ringliftkran weist einen aufständerbaren und einen eine Kreisfahrbahn bildenden Ring auf, der aus mehreren miteinander verbindbaren Segmenten besteht. Innerhalb des Ringes ist ein Unterwagen und ein damit drehbar verbundener und mehrere Winden aufweisender Oberwagen angeordnet. Der Oberwagen ist in beiden Endbereichen mit je einem Adapter verbunden, die sich mittels an den Adaptern angeordneter über Schwingen miteinander verbundener Rollensätze auf der Kreisfahrbahn des Ringes abrollend abstützen. Dabei bildet der Mittelpunkt des Ringes bzw. des Unterwagens die Drehachse. Der eine Adapter ist zur Aufnahme eines Gegengewichtes und der andere Adapter als Tragelement für einen am freien Ende des Adapters angelenkt anordenbaren Ausleger ausgebildet. Die Drehbewegung des Ringliftkranes wird mittels eines auf der Innenseite des Ringes angeordneten Zahnkranzes und darin eingreifender über Schwingen gelagerter Ritzel erzeugt. Zur Stabilisierung der Gesamtkonstruktion ist der Unterwagen über Versteifungsstreben mit verschiedenen Abschnitten des Ringes verbunden.A well-known ring lift crane is in the Mannesmann Demag construction machinery company brochure "Ring lift Granes" CC 2000 RL; CC 4000 RL, edition 11/82. This Ring lift crane has a ring that can be erected and a circular lane on, which consists of several interconnectable segments. Within the Ringes is an undercarriage and one that is rotatably connected and several winches having superstructure arranged. The superstructure is included in both end areas each connected to an adapter, which is arranged on the adapters via Swinging interconnected roller sets on the circular track of the ring support rolling. The center of the ring or undercarriage is the center of this the axis of rotation. One adapter is for holding a counterweight and one other adapter as a support element for one articulated at the free end of the adapter arrangable boom designed. The rotary movement of the ring lift crane is by means of a ring gear arranged on the inside of the ring and therein engaging pinion mounted on rockers. To stabilize the Overall construction is the undercarriage with different reinforcement struts Sections of the ring connected.

Eine vergleichbare Konstruktion ist aus der US-PS 4,103,783 bekannt. Dieser Ringliftkran besteht aus einem aufständerbaren Ring, der eine Kreisfahrbahn bildet und einer Konstruktion innerhalb des Ringes mit einem Königszapfen und einer Plattform, die mit einer Muffe zur Aufnahme des Königszapfens versehen ist. Die Plattform ist in beiden Endbereichen mit je einem Adapter verbunden, die sich mittels an den Adaptern angeordneter Rollensätze auf dem Ring abrollend abstützen, wobei der Mittelpunkt des Ringes die Drehachse für die Plattform bildet. Auf der Plattform sind mehrere Winden und auf dem hinteren Adapter ein Gegengewicht angeordnet. A comparable construction is known from US Pat. No. 4,103,783. This Ring lift crane consists of a stand-up ring that forms a circular track and a construction within the ring with a kingpin and one Platform which is provided with a sleeve for receiving the kingpin. The The platform is connected to an adapter in each of the two end areas Support roller sets arranged on the adapters by rolling on the ring, whereby the center of the ring forms the axis of rotation for the platform. On the platform there are several winches and a counterweight on the rear adapter.

Auf dem vorderen Adapter sind ein Hauptausleger sowie ein Mast (Gegenausleger) angelenkt befestigt. Der einteilige Ring ist durch sekantenmäßig und innerhalb des Ringes verlaufende Streben versteift. An vier Umfangsstellen sind an den Enden zweier parallel liegender Streben je eine Kolben-Zylinder-Einheit angeordnet, an deren freiem Ende ein Stützfuß anordenbar ist. Mittels dieser vier Kolben-Zylinder-Einheiten kann der Ring mitsamt des darauf angeordneten Kranes angehoben werden, so daß ein Raupenfahrzeug oder dgl. darunter gefahren werden kann. Das Raupenfahrzeug kann mit dem Tragelement verriegelt werden. Auf diese Weise ist der Ringliftkran als Ganzes verfahrbar.There is a main boom and a mast (counter jib) on the front adapter hinged attached. The one-piece ring is secant and within the Stiffened ring struts. At four peripheral points are at the ends two parallel struts each have a piston-cylinder unit arranged on their a support leg can be arranged at the free end. By means of these four piston-cylinder units the ring can be lifted together with the crane arranged on it, so that a crawler vehicle or the like can be driven under it. The caterpillar can be locked with the support element. In this way, the ring lift crane is considered The whole can be moved.

Nachteilig bei der letztgenannten Konstruktion ist, daß die Größe des Ringdurchmessers und damit die maximale Lastaufnahme begrenzt ist. Außerdem ist die Art der Verbindung des Ringliftkranes mit der Transporteinheit umständlich. Weiterhin benötigt der ungeteilte Ring viel Platz beim Verfahren des Ringliftkranes, der je nach örtlichen Gegebenheiten an der Einsatzstelle nicht immer zur Verfügung steht.A disadvantage of the latter construction is that the size of the Ring diameter and thus the maximum load capacity is limited. Besides, is the type of connection of the ring lift crane with the transport unit cumbersome. Furthermore, the undivided ring requires a lot of space when moving the ring lift crane depending on the local conditions at the place of use is not always available.

Ein gattungsbildender Ringliftkran ist aus der US-PS 4,196,816 bekannt. Dieser besteht aus einem aufständerbaren, eine Kreisfahrbahn bildenden und mehrere miteinander verbindbare Segmente aufweisenden Ring, innerhalb dessen ein Unterwagen angeordnet ist, der einen damit drehbar verbundenen und mehrere Winden aufweisenden Oberwagen sowie zwei im parallelen Abstand zueinander liegende Brückenträger aufweist, die in zwei einander gegenüberliegenden Endbereichen mit je einem Adapter versehen und über Querträger mit dem Oberwagen ver- und entbolzbar verbunden sind. Die Adapter stützen sich mittels angeordneter Rollen abrollend auf der Kreisfahrbahn des Ringes ab, wobei der Mittelpunkt des Ringes bzw. des Unterwagens die Drehachse bildet. Der eine Adapter ist zur Aufnahme eines Gegengewichtes und der andere Adapter zur Aufnahme eines anlenkbaren Auslegers ausgebildet. Zur Erzeugung der Drehbewegung des Ringliftkranes ist ein Zahnkranz angeordnet, dessen Drehbewegung auf die beiden Brückenträger übertragen wird. Der Unterwagen ist über Versteifungsstreben mit verschiedenen Abschnitten des Ringes verbunden.A generic ring lift crane is known from US-PS 4,196,816. This consists of a stand-up, a circular lane and several ring having interconnectable segments, within which a Undercarriage is arranged, one rotatably connected and several Superstructure with winches and two at a parallel distance from each other has lying bridge girders, which are in two opposite one another Provide end areas with an adapter and the crossbar with the The uppercarriage can be connected and unlocked. The adapters are supported by arranged rollers unrolling on the circular lane of the ring, the The center of the ring or the undercarriage forms the axis of rotation. One adapter is to hold a counterweight and the other adapter to hold one articulated boom. To generate the rotary movement of the Ringliftkranes is a sprocket arranged, its rotary motion on the two Bridge girder is transmitted. The undercarriage is attached with stiffening struts different sections of the ring connected.

Nachteilig dabei ist, daß die Komponenten des Kranes beim Schwenken und Fahren sich auf dem Ring und damit am Unterwagen abstützen. Wegen der zu geringen Antriebsleistung der Raupen müssen für Fahren und Schwenken zunächst Gegengewichtsreduktionen vorgenommen werden. Da das Gegengewicht nicht verschiebbar ist, sind zum Ausbalancieren des Kranes weitere Demontagen (z. B. Auslegerteile) erforderlich. Damit der Kran schwenken oder fahren kann, muß er am Ring hochgestützt werden und die Stützplatten sind entweder in Gänze zu entfernen oder alle einzeln hochzudrehen.The disadvantage here is that the components of the crane when swiveling and driving are supported on the ring and thus on the undercarriage. Because of too little The drive power of the crawlers must first be for driving and swiveling Counterweight reductions are made. Because the counterweight is not can be moved, further disassemblies are required to balance the crane (e.g. Boom parts) required. So that the crane can swing or drive, it must on Ring are supported and the support plates are either to be removed completely or turn them all up individually.

Aufgabe der Erfindung ist es, einen Ringliftkran der gattungsmäßigen Art anzugeben, der in einfacher Weise platzsparend und ohne Gegengewichtsreduktionen und ohne Teildemontage geschwenkt und verfahren werden kann. Außerdem sollen möglichst viele Bauteile modulartig für unterschiedliche Ringliftklassen verwendbar sein.The object of the invention is to provide a ring lift crane of the generic type, which is space-saving in a simple manner and without counterweight reductions and without Partial disassembly can be pivoted and moved. In addition, if possible many components can be used as modules for different ring lift classes.

Diese Aufgabe wird ausgehend vom Oberbegriff in Verbindung mit den kennzeichnenden Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte Weiterbildungen sind Bestandteil von Unteransprüchen.This task is based on the generic term in conjunction with the characterizing features of claim 1 solved. advantageous Further training is part of subclaims.

Erfindungsgemäß wird vorgeschlagen, daß zur Einstellung verschiedener Betriebsweisen des Kranes die Brückenträger relativ zum Grundgerät hebbar und in verschiedener Weise mit den Querträgern kraftschlüssig verbindbar sind, wobei in der Ausgangsstellung die formschlüssige Verbindung zwischen den Brückenträgern und den Querträgern ein vorgebbares Spiel aufweist und für die Drehbewegung mehrere identisch aufgebaute zwei Achsen und daran befestigte Räder aufweisende Ringwagen vorgesehen sind, die einerseits mit den Brückenträgern und andererseits mit dem Ring bzw. einem Ringsegment formschlüssig verbindbar sind. Mindestens eine Achse der unter dem Ausleger bzw. unter dem Gegengewicht angeordneten Ringwagen ist antreibbar. Somit kann der bisher übliche Zahnkranz und der aufwendige Ritzelantrieb entfallen. Zur Realisierung der kraftschlüssigen Verbindung von Brückenträger und Querträger sind in jedem Endbereich jedes Querträgers ein einen Anschlag aufweisender stehender Bolzen angeordnet. Bei zwei Querträgern bedeutet dies vier Bolzen. Der vorzugsweise aus einer kreisrunden Platte bestehende Anschlag wirkt zusammen mit einem den Bolzen umfassenden Lagerbock, der am Brückenträger befestigt ist. Der Abstand zwischen der Oberseite des Querträgers und der Platte des Bolzens einerseits sowie der Abstand der Basisplatte des Lagerbockes zum Anschlag des Bolzens andererseits kann durch auf der Oberseite des Querträgers verschiebbare Distanzplatten teilweise oder nahezu voll ausgefüllt werden. Die Distanzplatten sind über Mitnehmerstifte ver- und entbolzbar. According to the invention it is proposed that for setting different Operating modes of the crane, the bridge girders can be lifted in and in relation to the basic device are non-positively connectable to the cross members, in which Starting position, the positive connection between the bridge girders and the cross members has a predetermined play and several for the rotary movement Identical two axles and wheels attached to them Ring wagons are provided, on the one hand with the bridge girders and on the other hand are positively connectable to the ring or a ring segment. At least an axis of the arranged under the boom or under the counterweight Ring carriage can be driven. Thus, the previously customary ring gear and the elaborate pinion drive is eliminated. To realize the frictional connection of bridge girders and cross girders are in each end area of each cross girder arranged standing bolt having a stop. With two cross beams this means four bolts. The preferably consisting of a circular plate The stop works together with a bearing block that surrounds the bolt Bridge girder is attached. The distance between the top of the cross member and the plate of the bolt on the one hand and the distance between the base plate of the bearing block to stop the bolt on the other hand can by on the top of the Cross-member sliding spacer plates partially or almost completely filled become. The spacer plates can be bolted and deblocked using driver pins.

Je nach Größe des Ringes besteht jeder Brückenträger aus für den normalen Straßentransport geeigneten miteinander ver- und entbolzbaren Abschnitten. Im Unterschied zum bekannten Stand der Technik sind die vier zum Anheben der Gesamtkonstruktion erforderlichen Kolben-Zylinder-Einheiten im Endbereich der Brückenträger angeordnet. Vorzugsweise ist an jeder Stirnseite jedes Brückenträgers ein Winkelstück befestigt, das an seinem freien Ende mit der Kolben-Zylinder-Einheit verbindbar ist. Bekannterweise ist am freien Ende des Kolbens ein Stützfuß anordenbar. Das Anheben der Gesamtkonstruktion mittels der vier Kolben-Zylinder-Einheiten ermöglicht die kraftschlüssige Verbindung der Querträger mit den beiden Brückenträgern. Damit ist in einfacher Weise die Schwenk- und Verfahrbarkeit des Ringliftkranes sichergestellt.Depending on the size of the ring, each bridge support consists of the normal one Road transport suitable sections that can be bolted and deblocked. in the Different from the known prior art are the four for lifting the Overall design required piston-cylinder units in the end area of the Bridge girders arranged. Each bridge girder is preferably on each end face an elbow attached at its free end to the piston-cylinder unit is connectable. As is known, there is a support foot at the free end of the piston arranged. The lifting of the entire construction by means of the four piston-cylinder units enables the non-positive connection of the cross beams with the two Bridge girders. So that the pivoting and movement of the Ring lift cranes ensured.

Die unterschiedliche Art einer kraftschlüssigen Verbindung zwischen den Brückenträgern und den Querträgern am Oberwagen erfüllt drei Funktionen:

  • Schwenkverriegelung Da das Grundgerät bei den hohen Auflasten nicht mehr auf der Stelle in eine andere Fahrrichtung schwenken kann, wird das vorgeschlagene Verriegelungssystem als Hilfsmittel genutzt. Der Grundkran und der Ring werden mit Hilfe der an den Enden der Brückenträger befestigten Kolben-Zylinder-Einheiten angehoben, wobei zuvor zwischen den Querträgern und den Brückenträgern mittels verschiebbarer Distanzplatten eine kraftschlüssige Verbindung hergestellt worden ist, so daß die Querträger und damit der Oberwagen mit angehoben werden. Dann wird mit Hilfe des Drehwerkes am Oberwagen der Unterwagen zusammen mit dem Ring in die gewünschte Fahrtrichtung geschwenkt.
  • Fahrverriegelung Bei dieser Art der Verriegelung werden die Brückenträger und der Ring mittels der vier an den Enden der Brückenträger befestigten Kolben-Zylinder-Einheiten angehoben und nach kraftschlüssiger Verbindung zwischen den nicht angehobenen Querträgern und den Brückenträgern mittels einschiebbarer Distanzplatten kann der Unterwagen geradeaus fahren - und zwar vorwärts als auch rückwärts.
  • Arbeitsverriegelung Durch das Verriegelungssystem ist es möglich, den Ring, die Brückenträger und das Grundgerät bei der Kranarbeit als zusätzliches Gegengewicht einzusetzen. Das erspart unter Umständen ca. 10% des Gegengewichtes und den dazugehörigen Transport.
The different types of non-positive connection between the bridge girders and the cross girders on the superstructure serve three functions:
  • Swivel lock Since the basic device can no longer swivel in the opposite direction on the spot with the high loads, the proposed locking system is used as an aid. The basic crane and the ring are lifted with the help of the piston-cylinder units attached to the ends of the bridge girders, whereby a non-positive connection has previously been established between the cross girders and the bridge girders by means of displaceable spacer plates, so that the cross girders and thus the superstructure are also lifted become. Then, using the slewing gear on the superstructure, the undercarriage is swiveled together with the ring in the desired direction of travel.
  • Travel locking With this type of locking, the bridge girders and the ring are raised by means of the four piston-cylinder units attached to the ends of the bridge girders, and after a non-positive connection between the non-raised cross girders and the bridge girders by means of insertable spacer plates, the undercarriage can move straight ahead - namely forward as well as backward.
  • Working lock The locking system makes it possible to use the ring, the bridge girders and the basic device as an additional counterweight for crane work. This may save around 10% of the counterweight and the associated transportation.

Da der Ring in bekannter Weise aus mehreren miteinander verbindbaren Segmenten besteht, können in platzsparender Weise mehrere Segmente vor dem Verfahren des Kranes demontiert werden. Zwei einander gegenüberliegende Segmente sind mit den Brückenträgern über die Ringwagen verriegelbar und können mitverfahren werden. Dabei entspricht die Tangentialerstreckung dieser verriegelbaren Segmente höchstens der Breitenerstreckung des Gegengewichtes.Since the ring in a known manner from several interconnectable segments consists of several segments in a space-saving manner before the process of Cranes can be dismantled. Two opposing segments are with the Bridge girders can be locked via the ring trolleys and can be moved along. The tangential extent of these lockable segments corresponds at most the width extension of the counterweight.

Um die maximale Traglast noch weiter erhöhen zu können, wird darüber hinaus vorgeschlagen, die Ringwagen sich auf zwei konzentrisch liegende Ringe abstützen zu lassen, so daß die Hertz'sche Pressung für die mit der Ringfläche in Kontakt stehenden Räder unterhalb des zulässigen Maximalwertes bleibt. Damit wird die Gesamtlast auf zwei Ringe hälftig aufgeteilt. Um die Ringwagen in Umfangsrichtung der zwei Ringe verschieben zu können, sind jeweils zwei einander gegenüberliegende Wagen über eine Verbindungsschwinge miteinander verbunden. Zwei auf dem inneren Ring und zwei auf dem äußeren Ring angeordnete Wagen bilden eine Einheit und bilden die minimale Wagenbestückung. Eine solche Einheit kann mit einer weiteren gleichartigen Einheit über ein Brückenelement miteinander verbunden werden. Die Verknüpfung der Wagen untereinander ist als steckbare Verbindung ausgebildet. Die auf einem Ring maximal anordenbare Zahl von Ringwagen ist gleich oder kleiner als die Bogenlänge des einzelnen Ringsegmentes geteilt durch die Länge der Ringwagen. Vorzugsweise beträgt der Winkelausschnitt des Ringsegmentes 60 Grad. Die Ringwagen sind identisch aufgebaut und geeignet für einen Ring mit einem kleinen Durchmesser, z. B. 21 Meter und für einen Ring mit einem großen Durchmesser, z. B. 32 Meter. Dies wird in der Weise realisiert, daß der durch die sich schneidenden Mittellinien der beiden Achsen sich ergebende eingeschlossene Winkel der Mittelwert ist zwischen dem Winkel für den kleinsten und dem Winkel für den größten Ringdurchmesser. Die sich ergebenden Beeinträchtigungen im Abrollverhalten der Ringwagen bei einem vom Mittelwert abweichenden Ringdurchmesser werden bewußt in Kauf genommen. Der unterschiedliche Abrollweg des auf dem äußeren Bereich des Ringes abrollenden Rades im Vergleich zu dem auf dem inneren Bereich abrollenden Rad wird durch einen unterschiedlichen Durchmesser ausgeglichen. Damit die Ringwagen aber weiterhin horizontal liegen, wird die Ringbahn in eine Außen- und eine Innenbahn unterteilt mit einer dazwischenliegenden Stufe, deren Höhe der halben Räderdurchmesserdifferenz entspricht. Die formschlüssige Verbindung zwischen Ringwagen und Ring bzw. Ringsegment erfolgt über am Ringwagen angeordnete Stützbleche, die am Ende mit einer Hakenrolle versehen sind. Diese greifen unter den Obergurt des Ringes und begrenzen damit ein Abheben der Ringwagen.In order to be able to increase the maximum load even further, proposed that the ring car be supported on two concentric rings leave so that the Hertzian pressure for the in contact with the ring surface stationary wheels remain below the permissible maximum value. With that the Split the total load in half onto two rings. Around the ring carriage in the circumferential direction To be able to move the two rings are two opposite each other Carriage connected to each other via a link arm. Two on the inside Ring and two carriages arranged on the outer ring form a unit and form the minimum car population. Such a unit can be combined with another similar unit can be connected to each other via a bridge element. The Linking the car with each other is designed as a plug-in connection. The The maximum number of ring carriages that can be arranged on a ring is equal to or less than the arc length of the individual ring segment divided by the length of the ring carriage. The angular section of the ring segment is preferably 60 degrees. The Ring trolleys are constructed identically and are suitable for a ring with a small one Diameter, e.g. B. 21 meters and for a ring with a large diameter, e.g. B. 32 meters. This is realized in such a way that the through the intersecting Center lines of the two axes result in included angles of the mean is between the angle for the smallest and the angle for the largest Ring diameter. The resulting impairments in the rolling behavior of the Ring carriages with a ring diameter deviating from the mean value become aware accepted. The different rolling path of the on the outer area of the Ring rolling wheel compared to the rolling on the inner area Wheel is balanced by a different diameter. So that Ring wagons, however, continue to lie horizontally, the ring track becomes an exterior and an exterior Inner track divided with an intermediate step, the height of which is half Wheel diameter difference corresponds. The positive connection between Ring trolley and ring or ring segment is arranged on the ring trolley Support plates that are provided with a hook roller at the end. These are among the Upper chord of the ring and thus limit lifting of the ring carriage.

Die Schwerpunktlage des Ringliftkranes wird unter anderem ganz wesentlich durch die Positionierung des Gegengewichtes in bezug auf das Grundgerät bestimmt. Zur Veränderung dieser Schwerpunktlage wird deshalb vorgeschlagen, unter der Plattform für das Gegengewicht Gegengewichtwagen anzuordnen, deren Räder auf der Oberseite der Brückenträger abrollen können. Im gleichen Sinne wird weiterhin vorgeschlagen, im Bereich des Gegengewichtes liegenden Ende der beiden Brückenträger eine über den Ring hinauskragende Verlängerung der Brückenträger anzuordnen. Beide Maßnahmen weisen folgende Vorteile auf: Das Gegengewicht kann mittels der Gegengewichtwagen von der Position der normalen Arbeitsstellung in Richtung Drehmitte verschoben werden. Dadurch wird eine Schwerpunktoptimierung für das Verfahren des Ringliftkranes auf der Baustelle erreicht. Beim Verfahren des Gegengewichtes entlang der Verlängerung über den Ring hinaus ergeben sich folgende Vorteile: Es wird bei gleichem Gegengewicht ein größeres Gegengewichtsmoment erzeugt, das für eine höhere Tragfähigkeit ausnutzbar ist. Bei gleichem Gegengewichtsmoment kann das Gegengewicht verringert werden und im gleichen Maße verringert sich der Transport von Gegengewichtselementen.The center of gravity of the ring lift crane is, among other things, essentially determined by the Positioning of the counterweight in relation to the basic device is determined. to A change in this focus is therefore proposed under the platform for the counterweight to arrange counterweight car, whose wheels on the Unroll the top of the bridge girders. In the same sense will continue suggested lying in the area of the counterweight end of the two Bridge girder an extension of the bridge girder projecting beyond the ring to arrange. Both measures have the following advantages: The counterweight can be moved from the position of the normal working position to the counterweight car Towards the center of rotation. This will optimize the focus for moving the ring lift crane on site. In the process of There is a counterweight along the extension beyond the ring The following advantages: It becomes a larger one with the same counterweight Counterweight moment generated that can be used for a higher load capacity. at same counterweight moment, the counterweight can be reduced and in The transport of counterweight elements is reduced to the same extent.

Der Vorteil des vorgeschlagenen Ringliftkranes ist darin zu sehen, daß trotz großer Steigerung der aufnehmbaren Lastmomente die Hertz'sche Pressung im Bereich des Kontaktes Radfläche - Kreisfahrbahn unterhalb der zulässigen Werte bleibt und ohne Demontage des eigentlichen Kranes der Ringliftkran in einfacher Weise verfahrbar bleibt und der für das Verfahren benötigte Platz nicht größer ist als die Breitenerstreckung des Gegengewichtes. The advantage of the proposed ring lift crane can be seen in the fact that despite large Increase in the load moments that can be absorbed, the Hertzian pressure in the range of Contact wheel surface - circular lane remains below the permissible values and without Disassembly of the actual crane of the ring lift crane can be moved in a simple manner remains and the space required for the process is not larger than that Extension of the counterweight.

Weiterhin wurde bei der vorgeschlagenen Konstruktion Wert darauf gelegt, daß der Ringliftkran modulartig aufgebaut ist und möglichst viele standardisierte Bauteile verwendet werden. Dies beginnt mit dem Unter- und Oberwagen, die Bestandteile eines Standardkranes sind. Das setzt sich fort über den verwendeten Ausleger und die Winden, sowie das Kranfahrerhaus. Der Ausleger kann als Einfach- oder als sogenannter Doppelausleger ausgebildet sein. Die letztgenannte Konstruktion hat den Vorteil, daß die Einzelelemente des aus einer niedrigeren Kranklasse zusammengebauten Doppelauslegers einfacher zu transportieren sind und ein höheres Lastmoment übertragen können als der aus einer größeren Kranklasse verwendete Einfachausleger. Die aus mehreren Abschnitten bestehenden Brückenträger sind für einen Einfachring wie auch für einen Doppelring einsetzbar. Die Ringwagen sind typisiert und je nach zu übertragender Last wird die Anzahl der Ringwagen erhöht bzw. erniedrigt und entsprechend miteinander verknüpft. Um die Montage bzw. Demontage zu vereinfachen, wird, wo immer es möglich ist, mit Steckverbindungen gearbeitet, so daß mittels eines Hilfskranes einzelne Bauteile anhebbar und einsteckbar sind.Furthermore, in the proposed construction, emphasis was placed on the fact that the Ring lift crane has a modular structure and as many standardized components as possible be used. This starts with the undercarriage and superstructure, the components of a standard crane. This continues through the boom used and the Winches, as well as the crane cab. The boom can be used as a single or as so-called double boom can be formed. The latter construction has the Advantage that the individual elements of a lower sick class assembled double boom are easier to transport and a can transmit a higher load torque than that from a larger crane class single boom used. The multi-section Bridge supports can be used for a single ring as well as for a double ring. The Ring wagons are typed and depending on the load to be transferred the number of Ring wagon increased or decreased and linked accordingly. To the To simplify assembly and disassembly, wherever possible, with Plug connections worked so that individual components by means of an auxiliary crane can be raised and inserted.

In der Zeichnung wird anhand eines Ausführungsbeispieles der erfindungsgemäß ausgebildete Ringliftkran näher erläutert. Es zeigen:

Fig. 1
eine Seitenansicht eines erfindungsgemäß ausgebildeten Ringliftkranes
Fig. 2
eine Ansicht in Richtung X in Fig. 1 unter Wegfall der Kranaufbauten
Fig. 3
eine Ansicht in Richtung Y in Fig. 1 mit einem Doppelausleger
Fig. 4 + 5
die wesentlichen Arbeitsschritte zum Verfahren des Ringliftkranes
Fig. 4a, b
die Demontage einiger Ringsegmente
Fig. 5a - e
das Anheben und das Verfahren des Ringliftkranes
Fig. 6
die Verriegelung eines Ringsegmentes eines Doppelringes mit dem Brückenträger mittels der Ringwagen
Fig. 7
Verfahrstellungen des Gegengewichtes
Fig. 8 a,b
Vorder- und Draufsicht eines Ringwagens
Fig. 8c
eine Ansicht in Richtung X in Figur 8a einschließlich Stütze
Fig. 9 a,b
Verbindung zweier Ringwagen
Fig. 10 a-d
Abfolge der Schwenkverriegelung
Fig. 11 a-d
Abfolge der Verfahrverriegelung
Fig. 12 a,b
Abfolge der Arbeitsverriegelung
In the drawing, the ring lift crane designed according to the invention is explained in more detail using an exemplary embodiment. Show it:
Fig. 1
a side view of an inventive ring lift crane
Fig. 2
a view in the direction X in Fig. 1 with omission of the crane superstructures
Fig. 3
a view in the direction Y in Fig. 1 with a double boom
Fig. 4 + 5
the essential steps for moving the ring lift crane
4a, b
disassembly of some ring segments
5a-e
lifting and moving the ring lift crane
Fig. 6
the locking of a ring segment of a double ring with the bridge girder by means of the ring carriage
Fig. 7
Counterweight travel positions
8 a, b
Front and top view of a ring trolley
Fig. 8c
a view in the direction X in Figure 8a including support
9 a, b
Connection of two ring trolleys
Fig. 10 ad
Sequence of the swivel lock
Fig. 11 ad
Sequence of traversing locking
Fig. 12 a, b
Sequence of work locking

In den Figuren 1 - 3 sind in einer Seitenansicht und zwei Ansichten in X- und Y-Richtung ein erfindungsgemäß ausgebildeter Ringliftkran 1 dargestellt. Er besteht in diesem Ausführungsbeispiel aus einem Hauptausleger 2, einem Mast 3, einem Hilfsausleger 4 sowie zwei Wippstützen 5, 6. Am Kopf des Hilfsauslegers 4 ist eine Kopfrolle 7 angeordnet, über die das Hubseil 8 läuft. An einer am Hubseil 8 hängenden Unterflasche 9 ist drehbar ein Doppelhaken 10 angeordnet. Die obere Wippstütze 5 ist über eine feste Abspannung 11 mit dem Kopf des Hilfsauslegers 4 und über eine veränderbare Abspannung 12 mit der zweiten Wippstütze 6 verbunden. Die untere Wippstütze 6 ist wiederum über eine feste Abspannung 13 mit dem Fußbereich des Hauptauslegers 2 verbunden. Der Mast 3 ist einerseits über eine veränderbare Abspannung 14 mit dem Kopf des Hauptauslegers 2 und über eine feste Abspannung 15 mit den Enden zweier parallel liegender Brückenträger 17,17' (Figur 2) verbunden, die das Tragelement für die Kranaufbauten und das Gegengewicht 16 bilden, wobei beide Endbereiche als Adapter 24,25 ausgebildet sind. Am vorderen Adapter 24 ist der Hauptausleger 2 und der Mast 3 angelenkt befestigt und auf dem hinteren Adapter 25 ruht das Gegengewicht 16. Beide Adapter 24,25 stützen sich über hier angedeutete Ringwagen 18 (siehe Figur 8) auf einem eine Kreisfahrbahn bildenden Ring 20 ab, der über Stützen 21 aufständerbar ist. Das Kernstück des Ringliftkranes 1 bildet ein standardisierter Unterwagen, hier in Form eines Raupenfahrwerkes 22 und einem darauf drehbar angeordneten standardisierten Oberwagen 23. Im Bereich des Oberwagens 23 sind zwei Querträger 26, 27 vorgesehen, die dazu dienen, um die Brückenträger 17, 17' mit dem Oberwagen 23 in verschiedener Art und Weise verriegeln zu können.In Figures 1-3 are a side view and two views in the X and Y directions an inventive ring lift crane 1 is shown. It consists in this embodiment of a main boom 2, a mast 3, a Auxiliary boom 4 and two luffing supports 5, 6. There is one on the head of the auxiliary boom 4 Head roller 7 arranged over which the hoist rope 8 runs. On a hanging on the lifting rope 8 Bottom block 9 has a double hook 10 rotatably arranged. The upper rocker support 5 is via a fixed guying 11 with the head of the auxiliary boom 4 and via a changeable guying 12 connected to the second luffing support 6. The lower one The luffing support 6 is in turn connected to the foot region of the foot by means of a fixed guying 13 Main boom 2 connected. The mast 3 is changeable on the one hand Guy 14 with the head of the main boom 2 and a fixed guy 15 connected to the ends of two parallel bridge supports 17, 17 '(FIG. 2), which form the supporting element for the crane structures and the counterweight 16, wherein both end regions are designed as adapters 24, 25. On the front adapter 24 is the The main boom 2 and the mast 3 are articulated and attached to the rear adapter 25 the counterweight 16 rests. Both adapters 24, 25 are supported by the ones indicated here Ring carriage 18 (see Figure 8) on a ring 20 forming a circular lane, the can be erected over supports 21. The core of the ring lift crane 1 forms one standardized undercarriage, here in the form of a crawler track 22 and one standardized superstructure 23 rotatably arranged thereon. In the area of the Upper carriage 23, two cross members 26, 27 are provided, which serve to the Bridge girders 17, 17 'with the superstructure 23 in different ways to be able to lock.

Die Brückenträger 17, 17' dienen auch dazu, wie in Figur 2 zu erkennen ist, die Hauptwinden 28 - 31 aufzunehmen. Die Brückenträger 17,17' bilden zusammen mit den Adaptern 24,25 und den Querträgern 26,27 eine steife Rahmenkonstruktion, die in der Lage ist, entsprechende Lasten aufzunehmen. Zur möglichst gleichmäßigen Verteilung der in den beiden Endbereichen der Brückenträger 17,17' ruhenden Lasten auf den Ring 20 sind im vorderen Endbereich mehrere Ringwagen 18 angeordnet. In diesem Ausführungsbeispiel sind es vier Ringwagen 18. Im hinteren Endbereich, wo die Lasten geringer sind, genügt die halbe Anzahl von Ringwagen 18. Generell steht die Anzahl der Ringwagen 18 mit den daran befestigten Rädern im Zusammenhang mit der maximal zulässigen Hertz'schen Pressung im Bereich des Kontaktes Räder der Ringwagen 18 mit der Kreisfahrbahn des Ringes 20.The bridge girders 17, 17 'also serve, as can be seen in FIG Main winches 28 - 31 to take up. The bridge girders 17, 17 'form together with the adapters 24, 25 and the crossbeams 26, 27 have a rigid frame construction which, in is able to absorb corresponding loads. For the most uniform possible Distribution of the loads resting in the two end regions of the bridge girders 17, 17 ' a plurality of ring carriages 18 are arranged on the ring 20 in the front end region. In In this exemplary embodiment, there are four ring carriages 18. In the rear end area, where if the loads are lower, half the number of ring carriages 18 is sufficient the number of ring carriages 18 in connection with the wheels attached with the maximum permissible Hertzian pressure in the area of the contact wheels Ring carriage 18 with the circular carriageway of ring 20.

Figur 3 zeigt eine Ansicht in Richtung Y von Figur 1. In dieser Darstellung wird gezeigt, daß auf dem erfindungsgemäß ausgebildeten Ringliftkran 1 alternativ ein Einfachausleger oder ein Doppelausleger angeordnet werden kann. Unter Doppelausleger wird eine Anordnung verstanden, bei der ein Ausleger einer niedrigeren Kranklasse in identischer zweifacher Ausfertigung nebeneinander gesetzt und durch Universalverbinder 32 - 34 für den Hauptausleger 2.1, 2.2 sowie Universalverbinder 35, 36 für den Hilfsausleger 4.1, 4.2 miteinander verbunden werden. Diese Anordnung hat den Vorteil, daß die Einzelelemente des Hauptauslegers 2.1; 2.2 bzw. des Hilfsauslegers 4.1; 4.2 einfacher zu transportieren und zu handhaben sind und das hebbare Lastmoment höher als bei einem vergleichbaren Einfachausleger ist.FIG. 3 shows a view in the direction Y of FIG. 1. This illustration shows that on the ring lift crane 1 designed according to the invention an alternative Single boom or a double boom can be arranged. Under Double boom is understood to be an arrangement in which one boom is a lower crane classes placed side by side in identical duplicates and by universal connector 32 - 34 for the main boom 2.1, 2.2 and Universal connector 35, 36 for the auxiliary boom 4.1, 4.2 connected together become. This arrangement has the advantage that the individual elements of the main boom 2.1; 2.2 or the auxiliary boom 4.1; 4.2 easier to transport and handle and the liftable load torque is higher than that of a comparable one Is simple boom.

In den Figuren 4 und 5 sind die wesentlichen Arbeitsschritte zum Verfahren des erfindungsgemäß ausgebildeten Ringliftkranes 1 dargestellt. In Figur 11 wird bezüglich der Verriegelung darauf noch einmal eingegangen. Im Unterschied zur Darstellung in Figur 2 zeigt Figur 4a und Figur 4b die Anordnung eines Doppelringes 20.1;20.2. Diese Anordnung wird dann gewählt, wenn das hebbare Lastmoment wesentlich gesteigert werden soll und man auf diese Weise die auf den Ring drückenden Lasten hälftig auf zwei Ringe 20.1;20.2 aufteilen kann. Grob angedeutet ist in dieser Darstellung, daß die die Last auf den Ring übertragenden Ringwagen 18.1, 18.2 auf beiden Ringen 20.1;20.2 angeordnet sind. Die Ringwagen 18.1;18.2 sind über Verbindungsschwingen 37 bzw. Brückenelemente 38 steckbar miteinander verbunden. Um den Doppelring 20.1;20.2 zum Raupenfahrwerk 22 besser zentrieren zu können, sind zwischen Raupenfahrwerk 22 und Doppelring 20.1;20.2 Versteifungsstreben 39 über den Umfang verteilt angeordnet.In Figures 4 and 5, the essential steps for the process of Ring lift crane 1 designed according to the invention. In Figure 11 is regarding the locking system discussed it again. In contrast to the representation in FIG. 2 shows FIG. 4a and FIG. 4b the arrangement of a double ring 20.1; 20.2. This arrangement is chosen when the liftable load moment is essential should be increased and in this way the loads pressing on the ring split in half on two rings 20.1; 20.2. This is roughly indicated Representation that the ring carriages 18.1, 18.2 transferring the load to the ring two rings 20.1; 20.2 are arranged. The ring car 18.1; 18.2 are over Link arms 37 or bridge elements 38 are pluggably connected to one another. In order to better center the double ring 20.1; 20.2 to the crawler track 22, are between crawler track 22 and double ring 20.1; 20.2 stiffening struts 39 distributed over the circumference.

Das Teilbild 4b zeigt den ersten wesentlichen Arbeitsschritt zum Verfahren des Ringliftkranes 1. Die an sich bekannte Segmentierung des Ringes wird dazu genutzt, um die das Verfahren des Ringliftkranes 1 störenden Segmente abbauen zu können. Es verbleiben ein Teilsegment 20a im Bereich des Hauptauslegers 2 und des Mastes 3 sowie ein gegenüberliegendes Teilsegment 20e im Bereich des Gegengewichtes 16. Die übrigen Segmente 20b - 20d bzw. 20f - 20h sind vorher abmontiert worden. Die Bogenlänge des im Auslegerbereich liegenden Teilsegmentes 20a ist dabei so gewählt, daß die Ringwagen 18.1, 18.2 darauf untergebracht werden können. Vorteilhaft ist, daß die Tangentialerstreckung eines Teilsegmentes 20a, 20e nicht größer ist als die Breitenerstreckung 40 für die Gegengewichtshalterung 41, so daß für das Verfahren kein zusätzlicher Freiraum erforderlich ist.The partial picture 4b shows the first essential work step for the method of Ring lift cranes 1. The known segmentation of the ring is used to in order to be able to dismantle the segments which disrupt the movement of the ring lift crane 1. A sub-segment 20a remains in the area of the main boom 2 and the mast 3 and an opposing sub-segment 20e in the area of the counterweight 16. The remaining segments 20b-20d and 20f-20h have been removed beforehand. The The arc length of the partial segment 20a lying in the jib area is so chosen that the ring car 18.1, 18.2 can be accommodated on it. It is advantageous that the tangential extension of a sub-segment 20a, 20e is not is greater than the width extent 40 for the counterweight holder 41, so that for the procedure does not require additional free space.

In den Figuren 5a - 5e sind die weiteren Arbeitsschritte dargestellt. Um den Ringliftkran 1 anheben zu können, sind an beiden Enden der beiden Brückenträger 17, 17' Winkelstücke 42.1 - 42.4 angeordnet, an denen jeweils eine Kolben-Zylinder-Einheit 43.1 - 43.4 befestigbar ist. Die Verbindungsstelle weist einen klappbaren Schuh 47.1 - 47.4 auf, um nach Demontage der Kolben-Zylindereinheiten 43.1 - 43.4 die Längserstreckung des Ringliftkranes 1 verkürzen zu können. Zur Abstützung der Lasten auf den Boden sind alle Kolben-Zylinder-Einheiten 43.1 - 43.4 mit einem großem Stützfuß 44.1 - 44.4 versehen.The further work steps are shown in FIGS. 5a-5e. Around the ring lift crane 1 can be lifted at both ends of the two bridge beams 17, 17 ' Elbows 42.1 - 42.4 arranged, each with a piston-cylinder unit 43.1 - 43.4 can be fastened. The connection point has a foldable shoe 47.1. 47.4 to the after dismantling the piston-cylinder units 43.1 - 43.4 To be able to shorten the longitudinal extent of the ring lift crane 1. To support the Loads on the floor are all piston-cylinder units 43.1 - 43.4 with one large support leg 44.1 - 44.4.

In den Teilschritten 5c und 5d sind die Arbeitsschritte zum Anheben des Ringliftkranes 1 dargestellt. Mittels eines hier in Figur 6 dargestellten Haltesystems ist das Teilsegment 20a (Figur 4b) des Doppelringes 20.1;20.2 über die Ringwagen 18.1;18.2 mit den Brückenträgern 17,17' verbunden. Das gilt in gleicher Weise auch für das gegenüberliegende Teilsegment 20e. Werden nun die vier an den Enden angeordneten Kolben-Zylinder-Einheiten 43.1 - 43.4 angesteuert, so wird, wie in Figur 5 Teilbild d zu erkennen ist, der gesamte Ringliftkran 1 mitsamt den Teilsegmenten 20a, 20e angehoben.The sub-steps 5c and 5d are the work steps for lifting the ring lift crane 1 shown. This is by means of a holding system shown here in FIG Sub-segment 20a (Figure 4b) of the double ring 20.1; 20.2 via the ring carriage 18.1; 18.2 connected to the bridge girders 17, 17 '. The same applies to that opposite sub-segment 20e. Now become the four at the ends arranged piston-cylinder units 43.1 - 43.4 is controlled, as in Figure 5 partial image d can be seen, the entire ring lift crane 1 together with the partial segments 20a, 20e raised.

Nach dem kraftschlüssigen Verbinden der Brückenträger 17,17' mit den Querträgern 26,27 (Fig. 11) können die vier Kolben-Zylinder-Einheiten 43.1 - 43.4 angehoben werden und der gesamte Ringliftkran 1 ist in Geradeausfahrt entweder vorwärts oder rückwärts verfahrbar. Dies ist im Teilbild 5e durch einen Doppelpfeil 45 kenntlich gemacht.After the non-positive connection of the bridge girders 17, 17 'to the cross girders 26, 27 (FIG. 11), the four piston-cylinder units 43.1 - 43.4 can be raised and the entire ring lift crane 1 is in a straight line either forward or can be moved backwards. This can be seen in partial image 5e by a double arrow 45 made.

Figur 6 zeigt in einer vergrößerten Darstellung das Haltesystem zur Verbindung eines Ringsegmentes 20a mit den Brückenträgern 17,17'. Dazu sind am Ringwagen 18 Stützbleche 61,61' angelenkt, die in ihrem Endbereich mit einer Hakenrolle 62,62' versehen sind. Diese greifen unter den Obergurt 57 des jeweiligen Ringes 20.1, 20.2 und schaffen so die Verbindung zwischen Ringsegment 20a und Brückenträger 17,17' (siehe auch Figur 8c).Figure 6 shows an enlarged view of the holding system for connecting a Ring segment 20a with the bridge girders 17, 17 '. There are 18 on the ring carriage Support plates 61,61 'articulated, which in its end region with a hook roller 62,62' are provided. These engage under the top flange 57 of the respective ring 20.1, 20.2 and thus create the connection between ring segment 20a and bridge support 17, 17 ' (see also Figure 8c).

In Figur 7 ist die Möglichkeit des Verfahrens des Gegengewichtes 16 dargestellt. Um das Gegengewicht 16 verfahren zu können, sind unterhalb des Gegengewichtes 16 Gegengewichtswagen 50,51,50',51' angeordnet, deren Rollen auf der Oberseite der Brückenträger 17,17' abrollen können. Die mit A gekennzeichnete Stellung des Gegengewichtes 16 stellt die Normalstellung dar. Soll der Ringliftkran 1, wie zuvor in den Figuren 4 und 5 erläutert, verfahren werden, ist es vorteilhaft, das Gegengewicht 16 in den Bereich der Drehachse 52 des Grundgerätes zu verschieben. Dies zeigt die mit gestrichelten Linien dargestellte Stellung B. Eine solche Stellung des Gegengewichtes 16 verbessert die Schwerpunktlage, so daß der Ringliftkran 1 sicherer und ohne Gefahr eines Kippens verfahren werden kann. Die mit C gekennzeichnete Stellung des Gegengewichtes 16 zeigt die Möglichkeit, das Gegengewicht 16 außerhalb des Ringes 20 zu verschieben. Dazu sind am Ende der beiden Brückenträger 17,17' Verlängerungen 53,53' angeordnet, so daß das Gegengewicht 16 mittels der Gegengewichtswagen 50,51,50',51' nach außen verschoben werden kann. Dies hat den Vorteil, daß bei gleichem Lastmoment weniger Gegengewicht 16 benötigt wird oder bei gleichem Gegengewicht 16 das Lastmoment erhöht werden kann. Der Vollständigkeit halber sei noch darauf hingewiesen, daß wie in Figur 5b dargestellt, auch am Ende einer solchen Verlängerung 53 bzw. 53' ein Winkelstück 42.2 bzw. 42.3 anordenbar ist, um die Kolben-Zylinder-Einheit 43.2, 43.3 befestigen zu können.FIG. 7 shows the possibility of moving the counterweight 16. Around to be able to move the counterweight 16 are below the counterweight 16 Counterweight wagons 50, 51, 50 ', 51' arranged, their rollers on the top of the Bridge carrier 17, 17 'can roll. The position of the marked with A Counterweight 16 represents the normal position. Should the ring lift crane 1, as previously in 4 and 5 are explained, the counterweight is advantageous 16 in the area of the axis of rotation 52 of the basic device. This shows the Position B shown with dashed lines. Such a position of the Counterweight 16 improves the center of gravity, so that the ring lift crane 1 can be moved safely and without risk of tipping. The one with C marked position of the counterweight 16 shows the possibility that Move counterweight 16 outside of the ring 20. These are at the end of the two bridge supports 17, 17 'extensions 53, 53' arranged so that the Counterweight 16 by means of the counterweight carriage 50, 51, 50 ', 51' to the outside can be moved. This has the advantage that less with the same load torque Counterweight 16 is required or the load torque for the same counterweight 16 can be increased. For the sake of completeness it should be pointed out that how shown in Figure 5b, also at the end of such an extension 53 or 53 ' Angle piece 42.2 or 42.3 can be arranged to the piston-cylinder unit 43.2, 43.3 to be able to attach.

Figur 8a zeigt in einer Vorderansicht und Figur 8b in einer Draufsicht die Einzelheiten eines Ringwagens 18. Der Ringwagen 18 besteht aus einem Rahmen 48, in dem zwei Achsen 49,49' gelagert sind. Beide Achsen 49,49' weisen einen vom rechten Winkel abweichenden Winkel zum Rahmen 48 auf. Im Idealfall schneiden sich die Mittellinien der beiden Achsen 49,49' im Drehmittelpunkt des Oberwagens. Eine der beiden Achsen 49' weist einen Stumpf 54 zur Anordnung eines hier nicht dargestellten Antriebes auf. An den vier Ecken des Rahmens 48 sind Doppellaschen 55-55"' befestigt, an denen Seitenführungsrollen 46-46"' angeordnet sind. Diese stützen sich auf der Seitenfläche des Obergurtes 57 des jeweiligen Ringes 20.1, 20.2 ab. Auf den Achsen 49,49' sind je zwei Räder 58,58',59,59' befestigt, die sich auf der Oberseite des jeweiligen Ringes 20.1,20.2 abrollend abstützen. Der Rahmen 48 ist in der Mitte mit einem Querträger 60 versehen, an dem an beiden Endbereichen je ein Stützblech 61,61' angelenkt und mit einer Hakenrolle 62,62' versehen ist. Die Hakenrollen 62,62' stützen sich auf der Unterseite des Obergurtes 57 des Ringes 20.1,20.2 ab und begrenzen das Abheben des Ringwagens 18. Auf der Oberseite des Querträgers 60 ist mittig ein Zapfen 63 befestigt, so daß beispielsweise zwei hintereinander angeordnete Ringwagen 18.1,18.2 (Fig. 9a, b) zusammengesteckt werden können. Die Lagerung der Achsen 49,49' erfolgt durch im Rahmen 48 angeordnete Lagerelemente 66-66"'.FIG. 8a shows the details in a front view and FIG. 8b in a top view a ring carriage 18. The ring carriage 18 consists of a frame 48 in which two Axes 49,49 'are mounted. Both axes 49, 49 'have a right angle deviating angle to the frame 48. Ideally, the center lines intersect of the two axes 49,49 'in the center of rotation of the superstructure. One of the two Axes 49 'has a stump 54 for the arrangement of a not shown here Drive on. At the four corners of the frame 48 are double tabs 55-55 "' attached to which side guide rollers 46-46 "'are arranged. These are supported on the side surface of the top flange 57 of the respective ring 20.1, 20.2. On the Axles 49.49 'are attached to two wheels 58.58', 59.59 ', which are on the top of the respective ring 20.1, 20.2 rolling. The frame 48 is in the middle provided with a cross member 60, on each of which a support plate at both end regions 61,61 'is articulated and provided with a hook roller 62,62'. The hook rollers 62,62 ' are supported on the underside of the top flange 57 of the ring 20.1.20.2 and limit the lifting of the ring carriage 18. On the top of the cross member 60 a pin 63 is attached in the center, so that, for example, two in a row arranged ring car 18.1,18.2 (Fig. 9a, b) can be plugged together. The axes 49, 49 'are supported by means arranged in the frame 48 Bearing elements 66-66 "'.

Figur 8c zeigt in einer Ansicht in Richtung X in Figur 8a die Verwendung der Ringwagen 18 als Verbindungselement zwischen den Ringen 20.1,20.2 bzw. Ringsegmenten 20a, 20e (siehe Figur 5b) und den Brückenträgern 17,17'. In dieser Ansicht ist das Untergreifen der Hakenrollen 62,62' unter den Obergurt 57 des Ringes gut zu erkennen. Die seitliche Abstützung des Ringwagens erfolgt über die Seitenführungsrollen 46,46"'. Der eine Kreisfahrbahn bildende Ring besteht aus dem schon erwähnten Obergurt 57 sowie einem Untergurt 56 und diese verbindende Stege 65,65'. Aufständerbar ist der Ring über am Untergurt 56 höhenverstellbar befestigbare Stützen 21. Damit werden Unebenheiten des Bodens ausgeglichen.Figure 8c shows in a view in the direction X in Figure 8a the use of Ring carriage 18 as a connecting element between the rings 20.1, 20.2 or Ring segments 20a, 20e (see Figure 5b) and the bridge girders 17, 17 '. In this View is the reaching under the hook rollers 62,62 'under the top flange 57 of the ring clearly visible. The ring carriage is supported on the side by Lateral guide rollers 46.46 "'. The ring forming a circular lane consists of the already mentioned upper chord 57 and a lower chord 56 and connecting webs 65.65 '. The ring can be raised by means of height-adjustable fastenings on the lower flange 56 Columns 21. This compensates for unevenness in the floor.

In der Darstellung in Figur 8c ist nicht zu erkennen, daß die je Achse 49 angeordneten beiden Räder 58,58' einen unterschiedlichen Durchmesser aufweisen. Dies ist erforderlich, um den unterschiedlichen Abrollweg auszugleichen. Das auf dem inneren Bereich des Obergurtes 57 abrollende Rad 58' ist im Durchmesser kleiner als das auf dem äußeren Bereich abrollende Rad 58. Damit die Achse 49 weiterhin horizontal bleibt, trotz der unterschiedlichen Durchmesser der beiden Räder 58,58', ist der Obergurt 57 aufgeteilt in eine Innen- 74 und eine Außenbahn 75. Dazwischen liegt eine Stufe, deren Höhe der halben Räderdurchmesserdifferenz entspricht. Dies bedeutet, daß die Außenbahn 75 tiefer liegt als die Innenbahn 74. Bei einer angenommenen Räderdurchmesserdifferenz von 20 mm beträgt somit die Höhe der Stufe 10 mm. Trotz der Aufteilung in eine Innen- 74 und eine Außenbahn 75 wird der Obergurt 57 aus einem Blech gefertigt und die tieferliegende Außenbahn 75 durch mechanisches Abarbeiten (z. B. Fräsen) hergestellt.It cannot be seen in the illustration in FIG. 8c that the axes 49 are arranged both wheels 58, 58 'have a different diameter. This is required to compensate for the different roll-off. That on the inside The area of the upper belt 57 rolling wheel 58 'is smaller in diameter than that on the outer area rolling wheel 58. So that the axis 49 continues horizontally remains, despite the different diameters of the two wheels 58,58 ', is the Upper belt 57 divided into an inner 74 and an outer web 75. In between a step, the height of which corresponds to half the wheel diameter difference. This means that the outer track 75 is lower than the inner track 74. At one assumed wheel diameter difference of 20 mm is thus the height of the 10 mm step. Despite the division into an inner 74 and an outer web 75, the Upper chord 57 made of sheet metal and the lower outer web 75 through mechanical processing (e.g. milling).

In Figur 9a, b ist in einer Vorder- und in einer Draufsicht der Fall zweier hintereinander angeordneter zusammengesteckter Ringwagen 18.1,18.2 dargestellt, wobei in bezug auf die Darstellung in Figur 8a, b für gleiche Teile gleiche Bezugszeichen verwendet worden sind. Wie der Darstellung zu entnehmen ist, sind beide Ringwagen 18.1, 18.2 identisch aufgebaut. Um die beiden Ringwagen 18.1,18.2 miteinander verbinden zu können, wird eine Grundschwinge 19 auf die beiden Zapfen 63 des jeweiligen Ringwagens 18.1,18.2 gesetzt. Die Grundschwinge 19 ist in der Mitte ebenfalls mit einem Zapfen 64 versehen. Dieser dient dazu, um Ringwagen 18 auf zwei konzentrisch angeordneten Ringen 20.1, 20.2 mittels einer hier nicht dargestellten Verbindungsschwinge 37 miteinander zu verbinden (siehe Fig. 4a).9a, b show the case of two in a row in a front view and in a top view Arranged assembled ring car 18.1,18.2 shown, with reference 8a, b used the same reference numerals for the same parts have been. As can be seen from the illustration, both ring carriages 18.1, 18.2 constructed identically. To connect the two ring carriages 18.1.18.2 to each other can, a base rocker 19 on the two pins 63 of the respective Ring car 18.1.18.2 set. The base rocker 19 is also in the middle provided a pin 64. This serves to ring car 18 on two concentrically arranged rings 20.1, 20.2 by means of a not shown here Connection link 37 to connect to each other (see Fig. 4a).

In Figur 10 a-d sind die wesentlichen Schritte der Abfolge für eine Schwenkverriegelung dargestellt. Das obere Teilbild a zeigt die Verbindung der Querträger 26, 27 mit einem Teilelement des Oberwagens 23. Dazu ist am jeweiligen Querträger 26, 27 eine Lasche 71 befestigt, die mit dem Teilelement des Oberwagens 23 ver- und entbolzbar ist.In Figure 10 a-d are the essential steps of the sequence for a Swivel lock shown. The upper drawing a shows the connection of the Cross member 26, 27 with a sub-element of the superstructure 23 Cross member 26, 27 a tab 71 attached to the sub-element of the superstructure 23 can be bolted and deboled.

Im mittleren Teilbild b ist der Schnitt A-A des oberen Teilbildes a dargestellt. Es zeigt die beiden rechts und links angeordneten Brückenträger 17, 17' und den vorderen dazwischenliegenden Querträger 26 (Figur 2). Auf der Oberseite jedes Querträgers 26, 27 ist in den beiden Endbereichen je ein stehender Bolzen 72, 72' angeordnet. Am stirnseitigen Abschluß des Bolzens 72, 72' ist ein Anschlag, hier in Form einer kreisrunden Platte 70,70' befestigt. Der jeweilige Bolzen 72,72' wirkt zusammen mit einem am Brückenträger 17,17' befestigten Lagerbock 73,73'. Der Lagerbock 73,73' ist als ein U-förmiger Kasten aufgebaut mit zwei Seitenwangen 76 und einer dazwischenliegenden Basisplatte 77. Die Basisplatte 77 weist eine Öffnung 78 auf, durch die der Bolzen 72,72' hindurchsteckbar ist (Teilbild d). In der Ausgangsstellung ist zwischen der Unterseite der Basisplatte 77 und der Oberseite des Querträgers 26,27 ein hier gut erkennbares Spiel 79,79' vorhanden. Zur Einstellung der verschiedenen Verriegelungszustände sind auf der Oberseite des Querträgers 26,27 mehrere in Richtung der Bolzen 72,72' verschiebbare Distanzplatten 67,67' angeordnet. Die Verschiebung erfolgt entlang von Führungsschienen 68,68' (Figur 11 b,c). Die Mittel zum Verschieben der Distanzplatten 67,67' sind hier nicht dargestellt. Vorzugsweise wird dafür eine hydraulische Kolben-Zylindereinheit eingesetzt.The section A-A of the upper part a is shown in the middle part b. It shows the two right and left bridge girders 17, 17 'and the front intermediate cross member 26 (Figure 2). On the top of each cross member 26, 27, a standing bolt 72, 72 'is arranged in each of the two end regions. At the Front end of the bolt 72, 72 'is a stop, here in the form of a circular plate 70,70 'attached. The respective bolt 72, 72 'cooperates with a bracket 73, 73 'attached to the bridge girder 17, 17'. The bearing block is 73.73 ' constructed as a U-shaped box with two side walls 76 and one intermediate base plate 77. The base plate 77 has an opening 78, through which the bolt 72, 72 'can be inserted (partial image d). In the starting position is between the underside of the base plate 77 and the top of the cross member 26.27 there is a clearly recognizable game 79.79 '. To set the different locking states are on the top of the cross member 26,27 several spacer plates 67, 67 'which can be displaced in the direction of the bolts 72, 72' arranged. The displacement takes place along guide rails 68, 68 '(FIG. 11 b, c). The means for moving the spacer plates 67, 67 'are not shown here. A hydraulic piston-cylinder unit is preferably used for this.

Die Abfolge der Schwenkverriegelung enthält folgende Einzelschritte: Ein Teil der Distanzplatten 67,67', beispielsweise zwei, werden mittels einer hier nicht dargestellten Kolben-Zylindereinheit in Richtung der Bolzen 72,72' entlang der Führungsschienen 68,68' verschoben. Damit wird ein Teil des Abstandes zwischen der Oberseite der Basisplatte 77 des Lagerbockes 73,73' und der Unterseite der Platte 70,70' des Bolzens 72,72' aufgefüllt. Danach werden die beiden Brückenträger 17,17' mittels der vier Kolben-Zylindereinheiten 43.1 - 43.4 (Figur 5b) angehoben, wie die beiden eingetragenen Pfeile zeigen. Beim Anheben der beiden Brückenträger 17,17' wird der noch verbleibende Abstand eliminiert, so daß die eingeschobenen Distanzplatten 67,67' kraftschlüssig zwischen der Basisplatte 77 des Lagerbockes 73,73' und der Platte 70,70' des Bolzens 72,72' zur Anlage kommen. Über diese kraftschlüssige Verbindung werden die Querträger 26,27 mit hochgehoben und entsprechend der im Teilbild a dargestellten Verbindung dadurch auch der Oberwagen 23 und der daran befestigte Unterwagen. Gleichzeitig wird über die Verbindung Ringwagen 18 mit den Brückenträgern 17,17' der Ring ebenfalls mit hochgehoben. In diesem Zustand wird das Drehwerk des Oberwagens 23 aktiviert und bei stehendem Oberwagen wird der Ring mitsamt des Unterwagens (Raupenfahrwerk) in die gewünschte Stellung geschwenkt. Die vier Kolben-Zylindereinheiten 43.1 - 43.4 werden danach entlüftet und dadurch die Brückenträger 17,17' wieder abgesenkt. Sobald genügend Abstand zwischen der Basisplatte 77 und der Platte 70,70' sich eingestellt hat, können die eingeschobenen Distanzplatten 67,67' entlang der Führungsschienen 68,68' wieder herausgezogen und mit den übrigen Distanzplatten mittels Mitnehmerstifte 69,69' verbolzt werden
(Figur 11).The sequence of the swivel lock contains the following individual steps: A part of the spacer plates 67, 67 ', for example two, are displaced along the guide rails 68, 68' in the direction of the bolts 72, 72 'by means of a piston-cylinder unit, not shown here. Part of the distance between the top of the base plate 77 of the bearing block 73, 73 'and the underside of the plate 70, 70' of the bolt 72, 72 'is thus filled. Then the two bridge supports 17, 17 'are raised by means of the four piston-cylinder units 43.1 - 43.4 (FIG. 5b), as the two arrows show. When the two bridge supports 17, 17 'are raised, the remaining distance is eliminated, so that the inserted spacer plates 67, 67' are non-positively connected between the base plate 77 of the bearing block 73, 73 'and the plate 70, 70' of the bolt 72, 72 ' Plant come. Via this non-positive connection, the cross members 26, 27 are lifted up and, in accordance with the connection shown in partial image a, the superstructure 23 and the undercarriage fastened thereon. At the same time, the ring is also lifted up via the connection ring carriage 18 with the bridge girders 17, 17 '. In this state, the slewing gear of the uppercarriage 23 is activated and, when the uppercarriage is at a standstill, the ring together with the undercarriage (crawler chassis) is pivoted into the desired position. The four piston-cylinder units 43.1 - 43.4 are then vented and the bridge supports 17, 17 'are thereby lowered again. As soon as there is sufficient distance between the base plate 77 and the plate 70, 70 ', the inserted spacer plates 67, 67' can be pulled out again along the guide rails 68, 68 'and bolted to the remaining spacer plates by means of driving pins 69, 69'
(Figure 11).

In Figur 11 ist in den Teilbildern a - d die Abfolge der Verfahrverriegelung dargestellt. Teilbild a zeigt die Ausgangsstellung, wie sie in Figur 10 b bereits beschrieben worden ist. Teilbild b zeigt den ersten Arbeitsschritt. Dabei werden die Brückenträger 17,17' mittels der vier Kolben-Zylindereinheiten 43.1 - 43.4 so weit hochgehoben, z. B. um 500 mm, bis die Oberseite der Basisplatte 77 des Lagerbockes 73,73' an der Unterseite der Platte 70,70' zur Anlage kommt. Auf diese Weise ist Platz geschaffen worden, um das ganze Paket an Distanzplatten 67,67' einschieben zu können, wie in Teilbild d dargestellt. Nach dem Entlüften der vier Kolben-Zylindereinheiten 43.1 - 43.4 senken sich die beiden Brückenträger 17,17' ab, so daß über die eingeschobenen Distanzplatten 67,67' eine kraftschlüssige Verbindung zwischen Brückenträgern 17,17' und Querträgern 26,27 gebildet wird. Durch das Hochdrücken der beiden Brückenträger 17,17' werden gleichzeitig auch der gesamte Ring bzw. die im Adapterbereich liegenden Ringsegmente 20a - 20e (Figur 4b) mit angehoben. Die entlasteten vier Kolben-Zylindereinheiten 43.1 - 43.4 können, wie Figur 5e zeigt, eingezogen werden und der Ringliftkran kann in Geradeausfahrt vor- oder rückwärts bewegt werden.The sequence of the movement locking is shown in the partial images a - d in FIG. Partial image a shows the starting position as already described in FIG. 10b is. Drawing b shows the first step. The bridge girders 17, 17 ' lifted as far by means of the four piston-cylinder units 43.1 - 43.4, e.g. B. um 500 mm until the top of the base plate 77 of the bearing block 73.73 'on the Bottom of the plate 70,70 'comes to rest. In this way, space is created in order to be able to insert the whole package of spacer plates 67, 67 ', as in Partial d shown. After bleeding the four piston-cylinder units 43.1 - 43.4 lower the two bridge girders 17, 17 ', so that the inserted Spacer plates 67.67 'a non-positive connection between bridge girders 17.17' and cross members 26,27 is formed. By pushing the two up Bridge girders 17, 17 'are simultaneously the entire ring or in the Ring segments 20a - 20e (FIG. 4b) lying in the adapter area are also raised. The relieved four piston-cylinder units 43.1 - 43.4 can, as Figure 5e shows can be retracted and the ring lift crane can drive straight ahead or backwards be moved.

Figur 12 zeigt die Arbeitsverriegelung. Dabei wird angestrebt, ein Teil des Eigengewichtes des Kranes zur Erhöhung der Gesamtstabilität soweit als möglich mitheranzuziehen. Dies wird dadurch erreicht, daß in der Ausgangsstellung, vergleichbar wie in Figur 10c dargestellt, ein Teil der Distanzplatten 67,67' nur beim hinteren Querträger 27 eingeschoben werden. Dadurch wird der Abstand zwischen Basisplatte 77 und Platte 70,70' weitgehend aufgefüllt. Wird nun am Haken des Ringliftkranes eine Last angehängt, dann verbiegt sich elastisch der gesamte Ringliftkran in der Weise, daß vorne, d. h. im Bereich des Auslegers, die Lasten auf die Unterlage, d. h. den Adapter 24, Ringsegment 20a, Stützen 21 drücken, während der hintere Teil der Brückenträger 17,17' hochgebogen wird. Beim Hochbiegen wird der noch verbleibende Abstand zwischen Basisplatte 77 und Platte 70,70' eliminiert und es kommt eine kraftschlüssige Verbindung zwischen Brückenträger 17,17' und dem hinteren Querträger 27 zustande. Da der Querträger 27 wiederum mit dem Oberwagen 23 verbunden ist, wird ein Teil des Eigengewichtes des Kranes durch diese kraftschlüssige Verbindung zur Erhöhung der Gesamtstabilität genutzt. Figure 12 shows the work lock. The aim is to be part of the Dead weight of the crane to increase the overall stability as much as possible mitheranzuziehen. This is achieved in that in the starting position, comparable to that shown in FIG. 10c, part of the spacer plates 67, 67 'only in the case of rear cross member 27 are inserted. This will make the distance between Base plate 77 and plate 70,70 'largely filled. Now on the hook of the Ring lift cranes are attached to a load, then the whole bends elastically Ring lift crane in such a way that front, d. H. in the area of the boom, the loads on the document, d. H. press the adapter 24, ring segment 20a, supports 21 while the rear part of the bridge girders 17, 17 'is bent up. When bending up the remaining distance between base plate 77 and plate 70, 70 'is eliminated and there is a non-positive connection between bridge girders 17, 17 'and the rear cross member 27. Since the cross member 27 in turn with the Superstructure 23 is connected, part of the weight of the crane by this positive connection is used to increase the overall stability.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11 RingliftkranRing crane 22 Hauptauslegermain boom 33 Mastmast 44 Hilfsauslegerjib 5,65.6 Wippstütze (oben, unten)Rocker support (top, bottom) 77 Kopfrollehead role 88th Hubseilhoist rope 99 UnterflascheBottom block 1010 Doppelhakendouble hook 1111 feste Abspannung (Hilfsausleger)fixed guying (auxiliary boom) 1212 veränderbare Abspannung (Hilfsausleger)changeable guying (auxiliary boom) 1313 feste Abspannung (untere Wippstütze)fixed guying (lower luffing support) 1414 veränderbare Abspannung (Hauptausleger)changeable guying (main boom) 1515 feste Abspannung (Mast)fixed guy (mast) 1616 Gegengewichtcounterweight 1717 Brückenträgerbridge support 1818 Ringwagenring car 1919 Grundschwingebasic rocker 2020 Ringring 2121 Stützesupport 2222 Raupenfahrzeugcaterpillar 2323 Oberwagensuperstructure 2424 Adapter (vorn)Adapter (front) 2525 Adapter (hinten)Adapter (rear) 2626 Querträger (vorn)Cross member (front) 2727 Querträger (hinten)Cross member (rear) 28-3128-31 Hauptwindenmain winds 32-3432-34 Universalverbinder für den HauptauslegerUniversal connector for the main boom 35,3635.36 Universalverbinder für den HilfsauslegerUniversal connector for the auxiliary boom 3737 Verbindungsschwingeconnection rocker 3838 Brückenelementbridge element 3939 Versteifungsstreben stiffening struts 4040 Breitenerstreckungwidth extension 4141 GegengewichtshalterungCounterweight holder 4242 Winkelstückelbow 4343 Kolben-ZylindereinheitPiston-cylinder unit 4444 StützfußSupport foot 4545 Doppelpfeildouble arrow 4646 SeitenführungsrolleSide guide roller 4747 Klappbarer SchuhFoldable shoe 4848 Rahmenframe 4949 Achseaxis 50,5150.51 GegengewichtswagenCounterweight carriage 5252 Drehachseaxis of rotation 5353 Verlängerungrenewal 5454 Stumpfdull 5555 Doppellaschedouble strap 5656 Untergurtlower chord 5757 Obergurtupper chord 58,5958.59 Radwheel 6060 Querträger RingwagenCross member ring trolley 6161 Stützblechgusset 6262 Hakenrollehook role 63,6463.64 Zapfenspigot 6565 Stegweb 6666 Lagerelementbearing element 6767 Distanzplattespacer plate 6868 Führungsschieneguide rail 6969 Mitnahmestiftdriving pin 7070 Platteplate 7171 Lascheflap 7272 Bolzenbolt 7373 Lagerbockbearing block 7474 Innenbahninside track 7575 AußenbahnWingback 7676 Seitenwange side cheek 7777 Basisplattebaseplate 7878 Öffnungopening 7979 Spielgame

Claims (21)

  1. Ring crane with a ring which can be mounted on supports, which forms a circular track, and which has several segments which can be connected with each other; inside which ring is positioned a chassis, having a superstructure which is connected to it in such a way that it can revolve and which has several winches, and having two bridge girders which lie parallel to and at a distance from each other, each opposite end area of which girders has an adapter, and which girders are connected to the superstructure in such a way that they can be bolted and unbolted; the adapters rest and run - by means of rollers positioned in their end areas - on the circular track of the ring, where the centre point of the ring and/or the chassis forms the axis of rotation, and where one of the adapters is made to take a counterweight and the other adapter is made to take a jib which can be coupled on to it, and where means are provided to create the rotary movement of the ring crane, and where the chassis is connected to various sections of the ring by means of bracing struts,
    characterised by the fact
    that - in order to set the crane for different modes of operation - the bridge girders (17, 17') can be raised in relation to the base apparatus and can be connected non-positively in various ways with the crossbeams (26, 27), where the positive connection between the bridge girders (17, 17') and the crossbeams (26, 27) has, in the starting position, an amount of play (79, 79') which can be predetermined, and where there are, for the rotary movement of the crane body, several identical ring carriages (18) with two axles and wheels attached thereto, which can be connected positively to the bridge girders (17, 17') on the one hand, and to the ring or a segment (20a, 20e) of the ring on the other.
  2. Ring crane as in Claim 1,
    characterised by the fact
    that there is, on the top of the end area of each crossbeam (26, 27), a vertical bolt (72, 72') with a limit stop at its free end which operates in conjunction with a bracket (73, 73') - which encloses the bolt (72, 72') - on the bridge girder (17, 17'), and that there are spacing plates (67, 67'), which can be moved towards the bolts (72, 72'), on the top of each crossbeam (67, 67'), these plates being able to fill up, partly or almost completely, the space between the top of the crossbeam (26, 27) and the limit stop of the corresponding bolt (72, 72) on the one hand, and the space between the bracket (73, 73') and the limit stop of the bolt (72, 72') on the other.
  3. Ring crane as in Claim 2,
    characterised by the fact
    that the bracket (73, 73') is made in the shape of a box, having two side faces (76) positioned at a distance from each other, and a base plate (77) between them which has an opening (78) for the bolt (72, 72') to pass through.
  4. Ring crane as in Claim 2 and 3
    characterised by the fact
    that the limit stop of the bolt (72, 72') is in the form of a circular plate (70, 70') which can be connected to the bolt (72, 72').
  5. Ring crane as in Claims 2-4,
    characterised by the fact
    that each spacing plate (67, 67') has a recess to encircle the bolt (72, 72'), and has at least one opening in alignment with the other spacing plates (67, 67') to hold a pulling pin (69, 69').
  6. Ring crane as in Claim 1,
    characterised by the fact
    that the jib formed by the main jib (2) and the mast (3), together with the counterweight (16), rest, by means of the ring carriages (18, 19), on two concentric rings (20.1, 20.2), each of which has a circular track, and that the ring carriages (18) which lie one behind the other on each circular track have a base link (19), and that the ring carriages (18) which are positioned opposite each other are linked by means of a connector arm (37).
  7. Ring crane as in Claim 6,
    characterised by the fact
    that two ring carriages (18) on the inner ring (20.2) and two on the outer ring (20.1) form a single unit which is connected to another unit of the same type by means of a bridging element (38).
  8. Ring crane as in Claims 6 and 7,
    characterised by the fact
    that the link between the ring carriage (18), base link (19), connector arm (37) and bridging element (38) is in the form of a plug-in type connector.
  9. Ring crane as in Claims 1 and 6-8,
    characterised by the fact
    that the maximum number of ring carriages (18) which can be placed on a single ring (20.1, 20.2) is the same as or smaller than the arc length of the individual ring segment divided by the length of the ring carriage (18).
  10. Ring crane as in Claim 9,
    characterised by the fact
    that the angle sector of a ring segment is 60 degrees.
  11. Ring crane as in Claims 1 and 6-10,
    characterised by the fact
    that there is an even number of segments (20a - 20h) in each ring, of which two segments opposite to each other (20a, 20e) can be linked with the bridge girders (17, 17') by means of the ring carriages (18).
  12. Ring crane as in Claim 11,
    characterised by the fact
    that the tangential extension of the segments (20a, 20e) which can be interlocked with the bridge girders (17, 17') is the same as or smaller than the extent of the width (40) of the counterweight (16).
  13. Ring crane as in Claims 1 and 6-12,
    characterised by the fact
    that the two intersecting centre lines of the two axles (49, 49') of each ring carriage (18) enclose an angle which is the same as the mean value of the angle for the ring with the smaller diameter and the angle for the ring with the greater diameter.
  14. Ring crane as in Claim 13,
    characterised by the fact
    that, on each ring carriage (18), the wheel (66, 66') running on the outer area of the relevant ring has a diameter which is greater than that of the wheel (66", 66"') running on the inner area.
  15. Ring crane as in Claim 14
    characterised by the fact
    that the top flange (57) is divided into an outer track (75) and an inner track (74), and that in the plane of division there is a step, the height of which corresponds to half the difference of the two diameters of the wheels (66, 66', 66", 66"').
  16. Ring crane as in Claims 1 and 6-15,
    characterised by the fact
    that a support plate (61, 61') can be attached on to each ring carriage (18) on both sides of the frame (48), the end area of the plate being fitted with a hooked roller (62, 62') which engages underneath the top flange (57) of the ring.
  17. Ring crane as in Claim 1,
    characterised by the fact
    that at both ends of each bridge girder (17, 17') a piston cylinder unit (43.1-43.4) can be positioned which can be lifted on to the bridge girders (17, 17'), the free end of the piston being connected to an outrigger (44.1-44.4).
  18. Ring crane as in Claim 17,
    characterised by the fact
    that an elbow (42.1-42.4) can be secured to each front face of each bridge girder (17, 17'), the free end of which elbow can be connected to the piston cylinder unit (43.1-43.4).
  19. Ring crane as in Claim 1,
    characterised by the fact
    that counterweight carriages (50, 51, 50', 51') can be placed beneath the platform for the counterweight (16), the wheels of these carriages running on the top of the two bridge girders (17, 17').
  20. Ring crane as in Claim 1 and 19,
    characterised by the fact
    that, on the ends of the two bridge girders (17, 17') which are in the area of the counterweight (16), an extension (53, 53') of the bridge girders (17, 17') can be positioned which protrudes beyond the ring (20).
  21. Ring crane as in Claim 20,
    characterised by the fact
    that a piston cylinder unit (43.2; 43.3), which can be lifted on to the bridge girders (17, 17'), is placed at the end of the extension (53, 53'), the free end of the piston being connected to an outrigger (44.2, 44.3).
EP99924722A 1998-03-26 1999-03-25 Ring lift crane Expired - Lifetime EP1068143B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19814641 1998-03-26
DE19814641 1998-03-26
DE19914195A DE19914195A1 (en) 1998-03-26 1999-03-24 Ring lift crane
DE19914195 1999-03-24
PCT/DE1999/000955 WO1999048793A2 (en) 1998-03-26 1999-03-25 Ring lift crane

Publications (2)

Publication Number Publication Date
EP1068143A2 EP1068143A2 (en) 2001-01-17
EP1068143B1 true EP1068143B1 (en) 2002-09-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99924722A Expired - Lifetime EP1068143B1 (en) 1998-03-26 1999-03-25 Ring lift crane

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Country Link
US (1) US6516961B1 (en)
EP (1) EP1068143B1 (en)
JP (1) JP4382983B2 (en)
AT (1) ATE223349T1 (en)
WO (1) WO1999048793A2 (en)

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EP1068143A2 (en) 2001-01-17
WO1999048793A3 (en) 2000-03-16
US6516961B1 (en) 2003-02-11
JP2002507529A (en) 2002-03-12
WO1999048793A2 (en) 1999-09-30
ATE223349T1 (en) 2002-09-15
JP4382983B2 (en) 2009-12-16

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