EP3347300B1 - Mobile crane for angling a main jib extension relative to a main jib of a mobile crane - Google Patents
Mobile crane for angling a main jib extension relative to a main jib of a mobile crane Download PDFInfo
- Publication number
- EP3347300B1 EP3347300B1 EP16798537.3A EP16798537A EP3347300B1 EP 3347300 B1 EP3347300 B1 EP 3347300B1 EP 16798537 A EP16798537 A EP 16798537A EP 3347300 B1 EP3347300 B1 EP 3347300B1
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- EP
- European Patent Office
- Prior art keywords
- main boom
- extension
- main jib
- mobile crane
- main
- 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.)
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- 238000005859 coupling reaction Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 102000004315 Forkhead Transcription Factors Human genes 0.000 description 2
- 108090000852 Forkhead Transcription Factors Proteins 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
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- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom
-
- 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
- B66C23/06—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 with jibs mounted for jibbing or luffing movements
-
- 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
- B66C23/42—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 with jibs of adjustable configuration, e.g. foldable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/68—Jibs foldable or otherwise adjustable in configuration
-
- 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
- B66C23/82—Luffing gear
Definitions
- the invention relates to a mobile crane with a rocker mounted thereon and erectable via a luffing jib main boom and with a detachably connected to a main boom head of the main boom on top bolts and lower bolts main boom extension, the main boom extension, starting from a normal position after loosening the upper bolt by means of a Abwinkelantriebs order a luffing axis is bendable relative to the main boom, the Abwinkelantrieb acts on a foot of the main boom extension, a provided for another task hoist of the mobile crane provides the kinetic energy for the Abwinkelantrieb.
- the invention relates to a method for bending a main boom extension relative to a main boom of a mobile crane, the main boom is tiltably mounted on the mobile crane and erectable via a luffing cylinder, the main boom extension is detachably connected to a main boom head of the main boom via upper bolts and lower bolts and a Abwinkelantrieb on one foot of the main boom extension attacks.
- the main boom extension is tiltable from a home position in which the main boom extension is aligned with its longitudinal direction in extension of the longitudinal direction of the main boom in a 20 ° position and a 40 ° position.
- the main boom extension is detachably secured to the main boom head via two lower bolts located in the region of lower boom of the main boom extension and two upper bolts located in the region of upper boom of the main boom extension.
- the two upper bolts are pulled in a first step and, in a second step, the rockers via hydraulic luffing cylinders which engage the main boom head and the main boom extension the main boom extension causes.
- the insertion and removal of the two upper Bolt is in each case via a hydraulic Verbolzungszylinder.
- a self-sufficient hydraulic unit is arranged at the lower end of the main boom extension.
- a hydraulic unit for example, a diesel engine or electric motor can be used in each case with an associated hydraulic pump.
- the German patent DD 291 531 A5 relates to a mobile crane with a Abwinkellasche between a main boom and a main boom extension, wherein the main boom extension is angled from a basic position after releasing a retaining bolt by means of a Abwinkelantriebs about a rocking axis.
- the necessary kinetic energy is supplied by a hoist rope of the mobile crane.
- the invention has for its object to provide a mobile crane and method for bending a main boom extension relative to a main boom of a mobile crane, with which the bending of the main boom extension is simplified.
- the main boom extension in a mobile crane with a rockable mounted thereto and erectable via a luffing jib main boom and with a detachably connected to a main boom head of the main boom via upper bolts and lower bolts main boom extension, the main boom extension, starting from a normal position after loosening the upper bolt by means of a Abwinkelantriebs about a luffing axis relative to the main boom is angled, the Abwinkelantrieb acts on a foot of the main boom extension, wherein a provided for another task hoist of the mobile crane the kinetic energy for the Abwinkelantrieb provides a simplification achieved in that the Abwinkelantrieb comprises a lever element with two lever arms, the lever member is pivotally mounted on the upper flange of the main boom extension, the first lever arm for the operation of the Abwinkelantriebs is connected to a hoist rope of the hoist and over engages the second lever arm on the main boom head.
- the invention allows the bending of the main boom extension with standing on a flat ground mobile crane with horizontally aligned telescopic boom. For the last part of the whip extension of the main boom extension into a 20 ° or 40 ° position, the luffing cylinder of the main boom is used.
- the Abwinkelantrieb is designed such that a hoist of the mobile crane provides the kinetic energy for the Abwinkelantrieb.
- the lever arm is arranged centrally - seen from above on the main boom extension.
- no fork head offset between main boom and main boom extension is required, which compensates for deformation of the main boom extension. This is especially important for long narrow boom systems.
- this does not require an auxiliary cylinder over which a fork head offset must be compensated.
- the moment required for bending is preferably generated here via a combination of hoist rope force and a lower lever arm together with a force deflection, so that a higher force is available for bending with respect to a variant with a long lever arm.
- a force gain is achieved in that the first lever arm is longer than the second lever arm.
- the Abwinkelantrieb engages on the one hand on the main boom and on the other hand on the main boom extension in the region of its upper flange.
- the Abwinkelantrieb is designed such that the main boom extension against the Gravity effect of the main boom extension about the rocking axis pivotally raised and lowered.
- the rocking axis is formed by a lower roller head axis.
- a mobile crane is understood as meaning both a mobile telescopic crane and a movable crawler crane with a lattice boom.
- FIG. 1 is a side view of a main boom 1 of a telescopic crane, not shown, shown.
- a base frame 2 of a superstructure is shown, in which a hoist 14 is indicated.
- On the base frame 2 of the main boom 1 is pivotally mounted with its main boom 1c in the usual manner about a substantially horizontal axis and a symbolically indicated by a line rocker cylinder 3, which engages the base frame and the main boom 1, in a corresponding manner set up and rocker ,
- the main boom 1 is shown in a so-called stowed position, in which the main boom 1 is aligned with its longitudinal direction substantially horizontally.
- the main boom 1 is designed as a telescopic boom with a base box 1 b and guided therein telescopic sections 1 d and has at its the base frame 2 of the superstructure remote end of a main boom head 1 b and thus at the innermost telescopic section 1 d.
- the telescopic boom can be extended and retracted in the usual way via a telescopic cylinder (not shown) arranged in the innermost telescopic section 1d.
- An extension of the main boom 1 in the form of a main boom extension 4 is detachably attached to the main boom head 1b.
- the main boom extension 4 can be used temporarily or permanently with the telescopic crane to achieve over the largest boom length of the main boom 1 beyond even greater overall length of the boom or to allow working behind building edges.
- This main boom extension 4 is designed as a lattice mast, which is a truss pipe construction in the usual way.
- the main boom 1 and the main boom extension 4 are located in the FIG. 1 in a 0 ° position or basic position in which the longitudinal direction H of the main boom 1 and the longitudinal direction V of the main boom extension 4 are aligned with one another or run parallel to one another.
- a so-called rocking angle a of the main boom 1 relative to the superstructure 2 is thus 0 ° in the stored position.
- the main boom extension 4 is spaced in this basic position of a bottom 13 and is thus supported by the main boom 1 via a bolt on the main boom head 1a.
- Such main boom extensions 4 are basically constructed as modular systems of individual main elements and can be assembled according to the requirements of its length or carrying capacity.
- the individual main elements have transportable dimensions and are not carried along with the telescopic crane in most cases, but are transported separately. If allow the axle loads of the telescopic crane and the size of the main boom extension 4, if necessary, the main boom extension 4 can be carried. This would then be in a transport position laterally next to and parallel to the main boom 1.
- the attachment to the main boom head 1a can be made elementary or as a preassembled unit or units.
- FIG. 2 shows a detail view of FIG. 1 from the area of coupling the main boom extension 4 to the main boom 1.
- the main boom extension 4 having a rectangular cross section in the usual way is four bolt connections at bolting points A, B, C and D with corresponding bolts 7c on the main boom through four corner joints of the main boom extension 4 1 attached.
- the bolting points A, B, C and D are in the range of an upper roller head axle 15a and lower roller head axle 15b respectively disposed on the main boom head 1a.
- Each of the four bolt connections is designed as a so-called two-pin bolt connection, which is constructed in a corresponding manner essentially from a fork lug 7a, a lug 7b and a bolt 7c (see also FIGS Figures 3 and 9 ).
- the forked tongue 7a with its two opposite holes for the pin 7c is fastened in each case in the four bolting points A to D to a foot 4d of the main boom extension 4 and in extension of the main boom extension 4.
- the bores in the forked lug 7 a are at the horizontal main boom extension 1 vertically aligned.
- the tab 7b is fastened to the main boom head 1a via the upper or under roller head axles 15a, 15b.
- the tab 7b is arranged in each case at the ends and in extension of the upper or lower roller head axles 15a, 15b.
- the upper and lower roller head axles 15a, 15b are aligned horizontally and transversely to the longitudinal direction H of the main boom 1 with the main boom head 1a oriented horizontally and are rotatably mounted in the main boom head 1a.
- the tab 7b is also rotatable about the horizontal upper or lower roller head axles 15a, 15b.
- the tab 7b each has a bore which is aligned with the bores of the respective fork lug 7a.
- one of the bolts 7c is inserted in each case to fasten the main boom extension 4 to the main boom head 1a in a corresponding manner.
- the lower connecting element consists, like the upper connecting element, of fork strap, lug and bolt, which however are not shown in the figures for reasons of clarity.
- the two arranged in the region of a top flange 4a of the main boom extension 4 upper bolt 7c are vertically aligned with their longitudinal axis when the main boom extension 4 is aligned horizontally with its longitudinal direction V.
- the two other arranged in the region of a lower flange 4b of the main boom extension 4 lower bolts are aligned accordingly.
- the main boom extension 4 is shown in section, in order to show a seen from above in the middle of the main boom extension 4 mounted lever element 5 can.
- the lever element 5 has a first long lever arm 5a and a second short lever arm 5b in the manner of a double lever, is generally diamond-shaped overall, the pure diamond shape corresponding to the long and short lever arm 5a, 5b is distorted.
- the lever member 5 is eccentrically mounted pivotably about a lever axis 6, which is arranged in the region of a top flange 4a of the main boom extension 4, transverse to the longitudinal direction V of the main boom extension 4 and horizontally aligned.
- lever element 5 is mounted on the lever axis 6 such that the long lever arm 5a obliquely upwards and the short lever arm 5b obliquely downwards - each seen at horizontally aligned main boom extension 4.
- the aspect ratio of short to long lever arm 5a, 5b is about 2: 1, so that there is a corresponding power transmission or power gain.
- the lower and away from the lever axis 6 and towards a tip 4c of the main boom extension 4 facing the end of the short lever arm 5b is pivotally connected to a pull rod 9, whose opposite end at a Verbolzungsstelle 10 articulated to the main boom head 1a is hinged.
- the drawbar 9 extends with its longitudinal extent approximately in the longitudinal direction V of the main boom extension 4 and the bolts for attachment to the lever member 5 and the main boom head 1a extend parallel to the lever axis 6.
- a hoist rope 11 which comes from a hoist 14 on the superstructure 2, are hinged.
- a so-called Abwinkellasche 12 are arranged in the region of the upper flange 4a next to the coupling via the two upper pins 7c laterally on the upper flange 4a, which are connected at one end in Verbolzungsstellen E and F to the main boom head 1a and in a central region in Verbolzungslitis G and H are connected to the upper flange 4a of the main boom extension 4.
- the Abwinkellasche 12 it is possible to allow bending of the main boom extension 4 relative to the main boom 1 and about the Wippachse W after the release of the two upper pin 7c and to limit to a preselected position.
- each of the two Abwinkellaschen 12 is pivotally attached at one end via horizontally extending connecting bolt 12e on the main boom head 1a and has at the other end in each case a stop opening 12c, whose longitudinal extent is substantially parallel to the longitudinal direction V of the main boom extension 4.
- the Abwinkellasche 12 with the Main boom extension 4 connected.
- the maximum possible bendability of the main boom extension 4 can be adjusted, which corresponds to the angle of deflection b of 40 ° in the present case.
- a bending of the main boom extension 4 to the main boom 1 can be set in steps at preselected angles. In the present case, this is done for a 20 ° position.
- main boom 1 lower and upper roller head axles 15a, 15b also provided for the attachment of the main boom extension 4 axes, which is rotatable and aligned according to the above roller head axle 9a, could be present on the main boom head 1a.
- the tabs 7b can be attached directly and thus non-rotatably to the main boom head 1a. In order to achieve a rockability of the main boom extension 4 relative to the main boom 1, then the bore must be aligned horizontally for one of the bolts 7c in the tab 7b.
- FIG. 3 shows a plan view FIG. 2 , It can be seen that the two Abwinkellaschen 12 in the region of the longitudinal sides of the upper belt 4a of the main boom extension 4 and parallel to each other. Also, the two upper bolts 7c are shown in the bolting positions A and B with which the main boom extension 4 is fixed to the main boom head 1a.
- FIG. 4a shows a side view of a Abwinkellasche 12 in a fully extended 40 ° position.
- the Abwinkellasche 12 on the manual over a stop surface 12a (see FIG. 4d )
- a displacement and thus the angle of deflection b is limited essentially consists of a sliding tab 12b with a slot-shaped guide opening 12c, on which a guide plate 12d in the longitudinal direction c of the sliding tab 12b can be guided.
- the sliding lug 12b is formed as an elongate flat profile with the stopper opening 12c and extends substantially parallel to the longitudinal direction v of the main boom extension 1.
- the sliding lug 12b At one end facing the main jib head 1a, the sliding lug 12b has a bore 12j (see FIG FIG.
- the guide plate 12d is pushed, which for this purpose has a closed rectangular cross-section with a guide opening 12f (see FIG. 4b ), in which the sliding tab 12 b is inserted and guided.
- the guide lug 12d is detachably fastened to the main boom extension 4 at one end facing the main jib head 1a via a respective further connecting bolt 12i in one of the bolting points G and H.
- the connecting bolt 12i is aligned with its longitudinal extent parallel to the upper and lower roller head axles 15a, 15b. Also, the terminal bolt 12i is passed through the stopper opening 12c of the slide tab 12b.
- two stop holes 12g which are continuous and spaced apart in the longitudinal direction of the guide lug 12d, are provided (see FIG FIG. 4d ) are arranged in the side parts of the guide tongue 12d.
- a first of the two stop holes 12g serves to limit the angle of deflection b to 20 ° and a second to 40 °.
- the stop holes 12g for 40 ° are correspondingly closer to the main boom head 1a arranged to allow a larger displacement.
- a stop pin 12h is inserted into the respective stop bore 12g, which then passes through the two opposing stop holes 12g and the stop opening 12c located therebetween.
- the stopper bolt 12h is inserted into the second of the two stopper holes 12g, which limits the angle of deflection b to 40 °.
- the stopper bolt 12h is guided adjacent to the pin 12i in the stopper opening 12c.
- the bolt 12i would come into contact only with the opposing abutment surface 12a of the stopper opening 12c when no stopper bolt 12h is inserted.
- the second of the two stop holes 12g is free.
- FIG. 4b is a sectional view of FIG. 4a shown along the section line AA. It can be seen that the guide lug 12d has a rectangular cross-section with a central guide opening 12f, in which the sliding lug 12b is guided with its stop opening 12c.
- FIG. 4c a plan view of an Abwinkellasche 12 shown in a transport position.
- the Abwinkellasche 12 is not attached via the connecting bolt 12e on the main boom head 1a and the sliding lug 12b is inserted in the direction of the main boom extension 4 in the guide lug 12d.
- the connecting pin 12 e and the stop pin 12h are inserted for storage.
- FIG. 4d shows a sectional view of Figure 4c along the section line BB in Figure 4c , In this view, the stop opening 12c and the two stop holes are clearly visible.
- FIG. 4e is a side view of a Abwinkellasche 12 is shown, which is substantially the in FIG. 4a shown Abwinkellasche 12 corresponds. Unlike in the FIG. 4a the Abwinkellasche 12 is not shown in the 40 ° position, but in the 20 ° position. Correspondingly, the stopper bolt 12h is inserted in the stopper hole 12g remote from the main boom head 1a.
- the hoisting cable 11 is connected by the hoist 14 to the upper long lever arm 5a of the lever element 5 (see FIG. 2 ). Subsequently, the hoisting cable 11 is tightened or wound up as far as the main boom extension 4 by the hoist 14 on the upper boom 2 and is supported by the lever arm 5 supported on the main jib head 1a, so that the upper bolts 7c be relieved on the upper flange 4a of the main boom extension 4. The now relieved bolts 7c are then removed. The main boom extension 4 is now supported on the main boom 1 via the lower bolts in combination with the hoisting cable 11.
- the two Abwinkellaschen 12 which are already attached via the connecting pins 12i to the main boom extension 4, connected via further connecting bolt 12e with the main boom head 1a.
- the now desired maximum displacement is set at the Abwinkellaschen 12 to allow or limit the bending of the main boom extension 4 in the 20 ° - or 40 ° position.
- the hoist rope 11 is drained, In this case, the lever member 5 rotates about the lever axis 6, the main boom extension 4 pivots about the rocking axis W and lowers until its tip 4a touches the bottom 13.
- FIG. 5 the main boom 1 after FIG. 1 with the main boom extension 4 in a 15 ° position, the previously described position is shown, in which the lowered tip 4a is supported on the floor 13.
- FIG. 6 shows a detail view of FIG. 5 from the area of the coupling of the main boom extension 4 to the main boom 1 partially in section.
- the main boom extension 4 is held in the angled position on the luffing axis W with the lower bolt and of the pull rod 9 together with the lever member 5 on the main boom head 1a.
- the upper pins 7c are pulled and the upper fork tabs 7a in the region of the upper flange 4a are free.
- the hoist rope 11 is only indicated.
- the slide tabs 12 are not attached to the main boom head 1a to more clearly show the upper fork tabs 7a.
- the sliding lugs 12 are to be fastened via the connecting bolts 12e in the bolting points E and F to the main boom head 1a.
- FIG. 6 which corresponds to a view FIG. 5 shows with changed position of the lever member 5 in the transport position.
- the short and the long lever arm 5a, 5b aligned more parallel to the longitudinal direction V of the main boom extension 4.
- the main boom extension 4 is further angled by a rocking of the main boom 1 and the tip 4c of the main boom extension 4 slides through the floor 13 in the direction of the upper carriage 2.
- a Wippwinkel a which is enclosed by the longitudinal direction H of the main boom 1 and the horizontal of the bottom 13, as long as angled until the Abwinkellaschen 12 limit the bending in a preselected position.
- This position in which the main boom extension 4 to the main boom 1 is in a 40 ° position, is in the FIG. 8 shown.
- the tip 4c just in contact with the ground 13.
- a backward angle of the main boom extension 4 takes place in the reverse order.
- FIG. 9 shows a detail view of FIG. 8 from the area of the coupling of the main boom extension 4 to the main boom 1 with a Abwinkellasche 12 in stop position to a desired maximum Abwinkel thoroughly.
- main boom 1 may also be a lattice boom or a combination of telescopic boom, lattice boom and / or box boom.
- skin extension boom 4 lattice boom or box boom or combinations thereof are conceivable.
Description
Die Erfindung betrifft einen Mobilkran mit einem wippbar hieran gelagerten und über einen Wippzylinder aufrichtbaren Hauptausleger und mit einer lösbar an einem Hauptauslegerkopf des Hauptauslegers über obere Bolzen und untere Bolzen verbundenen Hauptauslegerverlängerung, die Hauptauslegerverlängerung ausgehend von einer Grundstellung nach einem Lösen der oberen Bolzen mittels eines Abwinkelantriebs um eine Wippachse relativ zu dem Hauptausleger abwinkelbar ist, der Abwinkelantrieb an einem Fuß der Hauptauslegerverlängerung angreift, wobei ein für eine andere Aufgabe vorgesehenes Hubwerk des Mobilkrans die Bewegungsenergie für den Abwinkelantrieb liefert.The invention relates to a mobile crane with a rocker mounted thereon and erectable via a luffing jib main boom and with a detachably connected to a main boom head of the main boom on top bolts and lower bolts main boom extension, the main boom extension, starting from a normal position after loosening the upper bolt by means of a Abwinkelantriebs order a luffing axis is bendable relative to the main boom, the Abwinkelantrieb acts on a foot of the main boom extension, a provided for another task hoist of the mobile crane provides the kinetic energy for the Abwinkelantrieb.
Auch betrifft die Erfindung ein Verfahren zum Abwinkeln einer Hauptauslegerverlängerung relativ zu einem Hauptausleger eines Mobilkrans, wobei der Hauptausleger wippbar an dem Mobilkran gelagert und über einen Wippzylinder aufrichtbar ist, die Hauptauslegerverlängerung lösbar an einem Hauptauslegerkopf des Hauptauslegers über obere Bolzen und untere Bolzen verbunden ist und ein Abwinkelantrieb an einem Fuß der Hauptauslegerverlängerung angreift.Also, the invention relates to a method for bending a main boom extension relative to a main boom of a mobile crane, the main boom is tiltably mounted on the mobile crane and erectable via a luffing cylinder, the main boom extension is detachably connected to a main boom head of the main boom via upper bolts and lower bolts and a Abwinkelantrieb on one foot of the main boom extension attacks.
Aus dem deutschen Gebrauchsmuster
Die deutsche Patentschrift
Auch ist aus der deutschen Offenlegungsschrift
Der Erfindung liegt die Aufgabe zu Grunde, einen Mobilkran und Verfahren zum Abwinkeln einer Hauptauslegerverlängerung relativ zu einem Hauptausleger eines Mobilkrans zu schaffen, mit dem das Abwinkeln der Hauptauslegerverlängerung vereinfacht wird.The invention has for its object to provide a mobile crane and method for bending a main boom extension relative to a main boom of a mobile crane, with which the bending of the main boom extension is simplified.
Diese Aufgabe wird durch einen Mobilkran mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen 2 bis 5 angegeben.This object is achieved by a mobile crane with the features of
Erfindungsgemäß wird bei einem Mobilkran mit einem wippbar hieran gelagerten und über einen Wippzylinder aufrichtbaren Hauptausleger und mit einer lösbar an einem Hauptauslegerkopf des Hauptauslegers über obere Bolzen und untere Bolzen verbundenen Hauptauslegerverlängerung, wobei die Hauptauslegerverlängerung ausgehend von einer Grundstellung nach einem Lösen der oberen Bolzen mittels eines Abwinkelantriebs um eine Wippachse relativ zu dem Hauptausleger abwinkelbar ist, der Abwinkelantrieb an einem Fuß der Hauptauslegerverlängerung angreift, wobei ein für eine andere Aufgabe vorgesehenes Hubwerk des Mobilkrans die Bewegungsenergie für den Abwinkelantrieb liefert, eine Vereinfachung dadurch erreicht, dass der Abwinkelantrieb ein Hebelelement mit zwei Hebelarmen umfasst, das Hebelelement schwenkbar an dem Obergurt der Hauptauslegerverlängerung gelagert ist, der erste Hebelarm für den Betrieb des Abwinkelantriebs mit einem Hubseil des Hubwerks verbunden ist und über den zweiten Hebelarm an dem Hauptauslegerkopf angreift. Hierdurch wird erreicht, dass das Abwinkeln nicht über äußere Hilfsmittel oder zusätzliche Hilfszylinder erfolgt, sondern am Mobilkran vorhandene Hubwerke verwendet werden, die ohnehin vorhanden sind. Das Abwinkeln erfolgt nicht über zusätzlich vorzusehende Hydraulikzylinder. Das Abwinkeln an sich erfolgt weitestgehend am Boden beziehungsweise der Ablagestellung des Hauptauslegers, so dass es nicht erforderlich ist, weit oberhalb der Oberkante des Mobilkrans zu arbeiten. Die Erfindung erlaubt das Abwinkeln der Hauptauslegerverlängerung bei auf einem ebenen Boden stehendem Mobilkran mit horizontal ausgerichtetem Teleskopausleger. Für den letzten Teil des Aufwippens der Hauptauslegerverlängerung in eine 20°- beziehungsweise 40°-Stellung wird der Wippzylinders des Hauptauslegers zu Hilfe genommen. Es ist vorgesehen, dass der Abwinkelantrieb derart ausgebildet ist, dass ein Hubwerk des Mobilkrans die Bewegungsenergie für den Abwinkelantrieb liefert. Der Hebelarm ist zentral - von oben auf die Hauptauslegerverlängerung gesehen - angeordnet. Hierdurch ist kein Gabelkopfversatz zwischen Hauptausleger und Hauptauslegerverlängerung erforderlich, der eine Verformung der Hauptauslegerverlängerung ausgleicht. Die ist insbesondere bei langen schmalen Ausleger-Systemen wichtig. Auch ist hierdurch kein Hilfszylinder erforderlich, über den ein Gabelkopf-Versatz kompensiert werden muss. Das für das Abwinkeln erforderliche Moment wird hier bevorzugt über eine Kombination aus Hubseilkraft und einem geringeren Hebelarm zusammen mit einer Kraftumlenkung erzeugt, so dass eine höhere Kraft zum Abwinkeln gegenüber einer Variante mit einem langen Hebelarm zur Verfügung steht.According to the invention in a mobile crane with a rockable mounted thereto and erectable via a luffing jib main boom and with a detachably connected to a main boom head of the main boom via upper bolts and lower bolts main boom extension, the main boom extension, starting from a normal position after loosening the upper bolt by means of a Abwinkelantriebs about a luffing axis relative to the main boom is angled, the Abwinkelantrieb acts on a foot of the main boom extension, wherein a provided for another task hoist of the mobile crane the kinetic energy for the Abwinkelantrieb provides a simplification achieved in that the Abwinkelantrieb comprises a lever element with two lever arms, the lever member is pivotally mounted on the upper flange of the main boom extension, the first lever arm for the operation of the Abwinkelantriebs is connected to a hoist rope of the hoist and over engages the second lever arm on the main boom head. This ensures that the bending does not take place via external aids or additional auxiliary cylinders, but existing on the mobile crane hoists are used, which are available anyway. The bending does not take place via additional hydraulic cylinder to be provided. The bending itself is largely at the bottom or the storage position of the main boom, so that it is not necessary to work well above the top of the mobile crane. The invention allows the bending of the main boom extension with standing on a flat ground mobile crane with horizontally aligned telescopic boom. For the last part of the whip extension of the main boom extension into a 20 ° or 40 ° position, the luffing cylinder of the main boom is used. It is envisaged that the Abwinkelantrieb is designed such that a hoist of the mobile crane provides the kinetic energy for the Abwinkelantrieb. The lever arm is arranged centrally - seen from above on the main boom extension. As a result, no fork head offset between main boom and main boom extension is required, which compensates for deformation of the main boom extension. This is especially important for long narrow boom systems. Also, this does not require an auxiliary cylinder over which a fork head offset must be compensated. The moment required for bending is preferably generated here via a combination of hoist rope force and a lower lever arm together with a force deflection, so that a higher force is available for bending with respect to a variant with a long lever arm.
Eine Kraftverstärkung wird dadurch erreicht, dass der erste Hebelarm länger als der zweite Hebelarm ist.A force gain is achieved in that the first lever arm is longer than the second lever arm.
Vorteilhafter Weise ist vorgesehen, dass insbesondere der Abwinkelantrieb einerseits an dem Hauptausleger und andererseits an der Hauptauslegerverlängerung im Bereich ihres Obergurtes angreift. Außerdem ist vorteilhaftweise der Abwinkelantrieb derart ausgebildet, dass die Hauptauslegerverlängerung entgegen der Schwerkraftwirkung der Hauptauslegerverlängerung um die Wippachse schwenkend anhebbar und absenkbar ist. Hierbei ist insbesondere die Wippachse von einer unteren Rollenkopfachse gebildet.Advantageously, it is provided that in particular the Abwinkelantrieb engages on the one hand on the main boom and on the other hand on the main boom extension in the region of its upper flange. In addition, advantageously, the Abwinkelantrieb is designed such that the main boom extension against the Gravity effect of the main boom extension about the rocking axis pivotally raised and lowered. In this case, in particular, the rocking axis is formed by a lower roller head axis.
Im Zusammenhang mit der vorliegenden Erfindung wird unter einem Mobilkran sowohl ein verfahrbarer Teleskopkran als auch ein verfahrbarer Raupenkran mit Gittermastausleger verstanden.In the context of the present invention, a mobile crane is understood as meaning both a mobile telescopic crane and a movable crawler crane with a lattice boom.
Nachfolgend wird die Erfindung an Hand eines in einer Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:
-
eine Seitenansicht eines Hauptauslegers mit einer Hauptauslegerverlängerung in einer Grundstellung,Figur 1 -
eine Detailansicht vonFigur 2 aus dem Bereich der Ankopplung der Hauptauslegerverlängerung an den Hauptausleger teilweise im Schnitt,Figur 1 -
eine Draufsicht aufFigur 3 ,Figur 2 -
eine Seitenansicht einer Abwinkellasche in einer 40°-Stellung,Figur 4a -
eine Schnittansicht vonFigur 4b ,Figur 4a -
eine Draufsicht einer Abwinkellasche in einer Transport-Stellung,Figur 4c -
eine Schnittansicht vonFigur 4d ,Figur 4c -
Figur 4e eine Seitenansicht einer Abwinkellasche in einer 20°-Stellung, -
den Hauptausleger nachFigur 5 mit der Hauptauslegerverlängerung in einer 15°-Stellung,Figur 1 -
eine Detailansicht vonFigur 6 aus dem Bereich der Ankopplung der Hauptauslegerverlängerung an den Hauptausleger teilweise im Schnitt,Figur 5 -
Figur 7 eine Ansicht wie in mit einem Hebelelement in Transportstellung,Figur 6 -
Figur 8 den Hauptausleger nach mit der Hauptauslegerverlängerung in einer 40°-Stellung undFigur 1 -
eine Detailansicht vonFigur 9Figur 8 mit einer Abwinkellasche in Anschlagstellung.
-
FIG. 1 a side view of a main boom with a main boom extension in a basic position, -
FIG. 2 a detailed view ofFIG. 1 from the area of the coupling of the main boom extension to the main boom partly in section, -
FIG. 3 a top viewFIG. 2 . -
FIG. 4a a side view of a Abwinkellasche in a 40 ° position, -
FIG. 4b a sectional view ofFIG. 4a . -
Figure 4c a plan view of a Abwinkellasche in a transport position, -
FIG. 4d a sectional view ofFigure 4c . -
Figure 4e a side view of a Abwinkellasche in a 20 ° position, -
FIG. 5 after the main boomFIG. 1 with the main boom extension in a 15 ° position, -
FIG. 6 a detailed view ofFIG. 5 from the area of the coupling of the main boom extension to the main boom partly in section, -
FIG. 7 a view like inFIG. 6 with a lever element in transport position, -
FIG. 8 after the main boomFIG. 1 with the main boom extension in a 40 ° position and -
FIG. 9 a detailed view ofFIG. 8 with an Abwinkellasche in stop position.
In der
Derartige Hauptauslegerverlängerungen 4 sind grundsätzlich als Baukastensysteme aus einzelnen Hauptelementen aufgebaut und können je nach Erfordernis an dessen Länge beziehungsweise Tragkraft zusammengestellt werden. Die einzelnen Hauptelemente weisen transportfähige Abmessungen auf und werden in den meisten Fällen nicht mit dem Teleskopkran mitgeführt, sondern werden separat transportiert. Wenn es die Achslasten des Teleskopkrans und die Baugröße der Hauptauslegerverlängerung 4 zulassen, kann bei Bedarf die Hauptauslegerverlängerung 4 mitgeführt werden. Diese würde sich dann in einer Transportstellung seitlich neben und parallel zu dem Hauptausleger 1 befinden. Eine Verbindung der einzelnen Hauptelemente aneinander zu der gewünschten Hauptauslegerverlängerung 4 erfolgt über Bolzenverbindungen in entsprechenden Verbolzungsstellen A, B, C und D (siehe
Die
Die beiden im Bereich eines Obergurtes 4a der Hauptauslegerverlängerung 4 angeordneten oberen Bolzen 7c (siehe
In der
Anstatt der bei dieser Bauweise des Hauptauslegers 1 vorhandenen unteren und oberen Rollenkopfachsen 15a, 15b könnten auch extra für die Anbindung der Hauptauslegerverlängerung 4 vorgesehene Achsen, die entsprechend der vorbeschriebenen Rollenkopfachse 9a drehbar und ausgerichtet ist, an dem Hauptauslegerkopf 1a vorhanden sein. Auch können die Laschen 7b direkt und somit nicht drehbar an dem Hauptauslegerkopf 1a befestigt werden. Um eine Wippbarkeit der Hauptauslegerverlängerung 4 relativ zu dem Hauptausleger 1 zu erreichen, muss dann die Bohrung jeweils für einen der Bolzen 7c in der Lasche 7b horizontal ausgerichtet sein.Instead of the present in this construction of the
Die
Die
In der
Des Weiteren ist in der
Die
In der
Nachfolgend wird ein Abwinkeln der in der Grundstellung gemäß
In der
Die
Nun, da die Spitze 4c auf dem Boden 13 ruht und das Hubseil 11 entlastet ist, wird die Zugstange 9 von dem Hauptauslegerkopf 1a gelöst und das Hebelelement 5 zusammen mit der Zugstange 9 in eine Transportstellung geschwenkt. Diese Transportstellung ist in der
In einem weiteren Schritt wird durch ein Aufwippen des Hauptauslegers 1 die Hauptauslegerverlängerung 4 weiter abgewinkelt und die Spitze 4c der Hauptauslegerverlängerung 4 gleitet hierdurch über den Boden 13 in Richtung des Oberwagens 2. Durch das Aufwippen wird die Hauptauslegerverlängerung 4 in einen Wippwinkel a, der von der Längsrichtung H des Hauptauslegers 1 und der Horizontalen des Bodens 13 eingeschlossen ist, solange weiter abgewinkelt bis die Abwinkellaschen 12 das Abwinkeln in einer vorgewählten Stellung begrenzen. Diese Stellung, in der sich die Hauptauslegerverlängerung 4 zu dem Hauptausleger 1 in einer 40°-Stellung befindet, ist in der
Ein Zurückwinkeln der Hauptauslegerverlängerung 4 erfolgt in umgekehrter Reihenfolge.A backward angle of the
Die
Obwohl im Zusammenhang mit dem vorliegenden Ausführungsbeispiel der Hauptausleger 1 als Teleskopausleger und die Hautauslegerverlängerung 4 als Gittermastausleger beschrieben sind, ist die Erfindung auch auf andere Ausgestaltungen von Hauptausleger 1 und Hautauslegerverlängerung 4 anwendbar. Der Hauptausleger 1 kann auch ein Gittermastausleger oder eine Kombination von Teleskopausleger, Gittermastausleger und/oder Kastenausleger sein. Für die Hautauslegerverlängerung 4 sind Gittermastausleger oder Kastenausleger oder Kombinationen hiervon denkbar.Although in the context of the present embodiment of the
- 1 Hauptausleger1 main boom
- 1a Hauptauslegerkopf1a main boom head
- 1b Grundkasten1b basic box
- 1c Hauptauslegerfuß1c main jib foot
- 1d Teleskopschuss1d telescopic shot
- 2 Grundrahmen2 basic frames
- 3 Wippzylinder3 rocker cylinders
- 4 Hauptauslegerverlängerung4 main boom extension
- 4a Obergurt4a upper strap
- 4b Untergurt4b bottom strap
- 4c Spitze4c tip
- 4d Fuß4d foot
- 5 Hebelelement5 lever element
- 5a erster langer Hebelarm5a first long lever arm
- 5b zweiter kurzer Hebelarm5b second short lever arm
- 6 Hebelachse6 lever axis
- 7a obere Gabellasche7a upper fork strap
- 7b obere Lasche7b upper flap
- 7c oberer Bolzen7c upper bolt
- 9 Zugstange9 drawbar
- 10 Verbolzungsstelle10 bolting point
- 11 Hubseil11 hoist rope
- 12 Abwinkellasche12 Abwinkellasche
- 12a Anschlagfläche12a stop surface
- 12b Schiebelasche12b sliding latch
- 12c Anschlagöffnung12c stop opening
- 12d Führungslasche12d guide strap
- 12e Anschlussbolzen12e connecting bolts
- 12f Führungsöffnung12f guide opening
- 12g Anschlagbohrung12g stop hole
- 12h Anschlagbolzen12h stop bolt
- 12i Anschlussbolzen12i connecting bolts
- 12j Bohrung12j bore
- 13 Boden13 floor
- 14 Hubwerk14 hoist
- 15a obere Rollenkopfachse15a upper roller head axle
- 15b untere Rollenkopfachse15b lower roller head axle
- A VerbolzungsstelleA bolting point
- B VerbolzungsstelleB bolting point
- C VerbolzungsstelleC bolting point
- D VerbolzungsstelleD bolting point
- E VerbolzungsstelleE bolting point
- F VerbolzungsstelleF bolting point
- G VerbolzungsstelleG Verbolzungsstelle
- H VerbolzungsstelleH bolting point
- a Wippwinkela rocking angle
- b Abwinkelwinkelb angle of attack
- c Längsrichtungc longitudinal direction
- H Längsrichtung des HauptauslegersH longitudinal direction of the main boom
- V Längsrichtung der HauptauslegerverlängerungV Lengthwise direction of main boom extension
- W WippachseW rocking axis
Claims (5)
- Mobile crane with a main jib (1) luffably mounted thereon and able to be raised via a luffing cylinder (3), and with a main jib extension (4) releasably connected to a main jib head (1a) of the main jib (1) via upper bolts (7) and lower bolts, wherein the main jib extension (4), starting from a basic position after release of the upper bolts (7), is able to be angled about a luffing axis (W) relative to the main jib (1) by means of an angling drive, the angling drive engages on a foot (4d) of the main jib extension (4), wherein a lifting mechanism of the mobile crane, which is provided for another task, provides the movement energy for the angling drive, characterised in that the angling drive comprises a lever element (5) having two lever arms (5a, 5b), the lever element (5) is pivotably mounted on the top chord (4a) of the main jib extension (4), the first lever arm (5a) is connected to a lifting cable (11) of the lifting mechanism (14) for operating the angling drive and engages on the main jib head (1a) via the second lever arm (5b).
- Mobile crane as claimed in claim 1, characterised in that the first lever arm (5a) is longer than the second lever arm (5b) so as to achieve a force increase.
- Mobile crane as claimed in claim 1 or 2, characterised in that the angling drive engages the main jib (1) on the one hand and engages the main jib extension (4) in the region of its top chord (4a) on the other hand.
- Mobile crane as claimed in any one of claims 1 to 3, characterised in that the angling drive is designed in such a way that the main jib extension (4) can be raised and lowered in a pivoting manner about the luffing axis (W) against the effect of the gravitational force of the main jib extension (4).
- Mobile crane as claimed in any one of claims 1 to 4, characterised in that the luffing axis (W) is formed by a lower rolling head spindle (15b).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102015120350.2A DE102015120350B3 (en) | 2015-11-24 | 2015-11-24 | Mobile crane for bending a main boom extension relative to a main boom of a mobile crane |
PCT/EP2016/078461 WO2017089353A1 (en) | 2015-11-24 | 2016-11-22 | Mobile crane for angling a main jib extension relative to a main jib of a mobile crane |
Publications (2)
Publication Number | Publication Date |
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EP3347300A1 EP3347300A1 (en) | 2018-07-18 |
EP3347300B1 true EP3347300B1 (en) | 2019-05-08 |
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Application Number | Title | Priority Date | Filing Date |
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EP16798539.9A Active EP3337752B1 (en) | 2015-11-24 | 2016-11-22 | Mobile crane and method for angling a main boom extension in relation to a main boom of a mobile crane |
EP16798537.3A Active EP3347300B1 (en) | 2015-11-24 | 2016-11-22 | Mobile crane for angling a main jib extension relative to a main jib of a mobile crane |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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EP16798539.9A Active EP3337752B1 (en) | 2015-11-24 | 2016-11-22 | Mobile crane and method for angling a main boom extension in relation to a main boom of a mobile crane |
Country Status (5)
Country | Link |
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US (2) | US10781083B2 (en) |
EP (2) | EP3337752B1 (en) |
CN (2) | CN108883916B (en) |
DE (1) | DE102015120350B3 (en) |
WO (2) | WO2017089353A1 (en) |
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DE102015119381B3 (en) | 2015-11-10 | 2017-04-27 | Terex Global Gmbh | Mobile crane and method for bending a main boom extension relative to a main boom of a mobile crane |
DE102015119379B3 (en) | 2015-11-10 | 2017-03-30 | Terex Global Gmbh | Mobile crane and method for bending a main boom extension relative to a main boom of a mobile crane |
DE102015120350B3 (en) | 2015-11-24 | 2017-05-24 | Terex Global Gmbh | Mobile crane for bending a main boom extension relative to a main boom of a mobile crane |
-
2015
- 2015-11-24 DE DE102015120350.2A patent/DE102015120350B3/en not_active Expired - Fee Related
-
2016
- 2016-11-22 WO PCT/EP2016/078461 patent/WO2017089353A1/en active Application Filing
- 2016-11-22 CN CN201680068448.4A patent/CN108883916B/en not_active Expired - Fee Related
- 2016-11-22 US US15/778,124 patent/US10781083B2/en active Active
- 2016-11-22 CN CN201680068460.5A patent/CN108290724B/en active Active
- 2016-11-22 EP EP16798539.9A patent/EP3337752B1/en active Active
- 2016-11-22 EP EP16798537.3A patent/EP3347300B1/en active Active
- 2016-11-22 US US15/778,432 patent/US10640340B2/en active Active
- 2016-11-22 WO PCT/EP2016/078467 patent/WO2017089356A1/en active Application Filing
Non-Patent Citations (1)
Title |
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US20180346292A1 (en) | 2018-12-06 |
EP3347300A1 (en) | 2018-07-18 |
CN108883916B (en) | 2020-01-03 |
US10781083B2 (en) | 2020-09-22 |
US10640340B2 (en) | 2020-05-05 |
US20180339889A1 (en) | 2018-11-29 |
DE102015120350B3 (en) | 2017-05-24 |
EP3337752B1 (en) | 2019-05-08 |
CN108883916A (en) | 2018-11-23 |
CN108290724A (en) | 2018-07-17 |
WO2017089353A1 (en) | 2017-06-01 |
WO2017089356A1 (en) | 2017-06-01 |
EP3337752A1 (en) | 2018-06-27 |
CN108290724B (en) | 2019-09-27 |
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