DE2112534A1 - Telescopic boom crane - Google Patents

Description

PATENT Attorney DIPL.-INQ. JOACHIM STRASSE 2 1 12534

«45 HANAU · RtJMERSTR. 1? · POST BOX 7 «· TE1.2O8O3 · TELEQRAMME: HANAUPATENT · TELEX: 418478 £ pet

Jean NOLY

La Clayette (Saone et Loiro) March 15, 1971

France _{Zo / Nie} _ _lo

Telescopic boom crane

The present invention relates to a telescopic boom crane of at least two elements in the form of a cantilever foot and a boom tip that can be slid into one another

Known cranes use a lattice jib with a trolley for the distribution of loads that run on the boom belts * These are so-called distribution cranes.

Furthermore , cranes with liftable log horns are known, in which one or more elements are loaded or can be slid into one another without loading.

The object of the present invention is to create a crane with a boom, which can be used according to the respective requirements for lifting with an inclined boom or ale telescopic boom and which can be used after

1098-41 / 1219

BATH ORIGINAL

Type of a crane has a trolley, the Difficulties in the transition of the running tracks of the trolley at the joints of the telescopic elements of the boom xnarmieden should be.

This object is achieved in that one of the two elements has a smaller cross-section than the other in which it is in the retracted position slides, with the track for a trolley in the extended boom position in the area of two lateral Lower chords of each element are located and means are provided to facilitate the sequence of movements between the chords, the both aligned and transversely offset in the longitudinal direction to each other, to be designed continuously.

In a preferred embodiment of the invention is the track is formed from the legs of a .iisüieleisens lying on the belts above and to the side and encompass the Means for the transition between the belt pairs wedge-shaped angle profiles, which the extendable part of the sliding Enclose straps and point with the thinner ends against the ends of the outer straps, each angle profile has two mutually perpendicular, externally bevelled side parts, which are on the upper surface and on the outer Make contact with the side surface of the corresponding retractable belt.

The raceways of each belt of both the boom foot and the boom tip are advantageously related Inclined to the vertical to automatically move the boom tip and the trolley to the center both elements of the extended boom.

In a further embodiment of the invention, the track of the retractable element near the belt consists of one longitudinal beam articulated on a longitudinal axis, which is close to the

BATHROOM ORIGINAL - 3 -

109841/1219

Belt is arranged, the carrier in the Innet-o de ρ retractable boom element is pivotable to the retraction of the element in the interior of the boom element;: i: enable.

Each adjustable support of the boom tip in this arrangement moves below it when it is pivoted in or out of the belt. The arrangement can also be such that in the collapsed position each movable carrier the boom tip by pivoting above the belt uxid outside of the side struts the boom tip is located.

Another embodiment of the invention is yer moving carrier, \ <rolcher the career of the boom tip forms, articulated on a lateral longitudinal axis, which is located below the corresponding belt of the boom tip extends, whereby by folding out and down the carrier, the lengthening of the track dos cantilever foot takes place. Hierbii is the hinge axis of the wearer on the side of the Boom tip halfway up between the relevant Arranged lower chord and upper chord, the carrier consists of an angle iron, which is used to increase the belt can be folded on these to form the continuation of the career of the trolley. The arrangement can also be made in this way be that each support of the jib head directly to the corresponding one Belt hinged and by folding out with extended AusIcgerspitze on the outside of the sliding belt and lie close to the inside of the fixed strap koiimit, with its lower end having a horizontal under the straps have outwardly directed legs opposite another horizontal fixed leg, which is directed inwards and firmly connected with a thorn belt, and that the trolley hangs on horizontal axes, each of which has a right and oijie left roll, where-

BATH ORIGINAL - h -

109841/1719

2112

where the track under the boom foot is formed by © inen herisoniaI-331 legs of the fixed belt, on which the hook rollers run, while the right rollers are located under the tip of the cantilever arm, which are the ones from the extended one Unroll the horizontal legs of the track carried by the cantilever tip.

In iioiterer embodiment represent invention, among the provided under "· i / urian the movable boom tip Ikebeinittel in the form of '/ o3i screw jacks for raising the boom tip according to dera extension of the boom to the bottom booms to the height dor upper surface of the straps to have the jib root, The belts are locked to the adjustable finrien by bolts, which, when pushed into exactly aligned offnus joints of the belts, establish the connection between the jib foot and the jib tip as soon as the surface of their belts are in the common extension »

In a further exemplary embodiment of the invention, the retractable boom tip has the shape of a prismatic one Bracing triangular cross-section with a top chord, which is supported by two flat lateral cross braces with two Lower chords are connected to the running track of the retractable Wear AusiGgerspitze, these lower chords on a longitudinal axis hinged and displaceable inwards or can be expanded outwards when the boom is extended. Here is each lower chord is hinged to the lower part of its standing lateral cross bracing. The arrangement can also be made so that each lower chord is firmly connected to its lateral cross brace, this with their apex is hinged to the slow-moving upper chord is.

The invention is described in more detail with reference to the exemplary embodiments shown in the drawing.

BAD ORiGiNAL

10 9 8 4 1/1219

It is time!

x 1 a crane with telescopic boom old "distribution crane,

Fig. 2 the crane with the boom raised »

Fig »3 shows the crane in the folded transport position,

FIG. K shows a cross section along the line IV - IV in FIG. 3 through one of the possible embodiments of the two telescopic elements of the boom,

Fig. 5 one of the angle profiles for securing the steadi along the course of the crane runway on the extended boom,

6 shows a perspective partial view of the angle profile on the extended boom,

7 and 8 are cross-sections of a further embodiment with a retracted or extended boom,

Fig. 9 and Io show the retracted and extended positions a third embodiment,

11 and 12 the retracted or extended position of an additional embodiment,

Fig. 13 and Ik a further embodiment in which the longitudinal runner of the track is hinged to the lower chord,

FIGS. 15 and 16 perspective Teilaneichton dor retracted or extended position of the Auslogers a & naer & Aueführung n "shape,

109841/1219

BATH ORIGINAL

F £ so i? an end view in the direction of arrow XVII in Fig. 15,

13 shows an end view in the direction of arrow XVIII in Fig. 16,

Figo 19 ^ tid 2o an embodiment in the retracted and extended position, in which the load or distribution carriage is suspended below its track,

Figs. ₈ 21 and 22 a modified embodiment in which the boom tip is raised after it has been extended,

23 and 24 a modified embodiment, at which the lower chords of the boom tip form the running track and under the lateral cross stiffeners are pivotable,

25 and 26 a further embodiment in which the Bottom chords firmly with the lateral cross struts connected and these are hinged at their apex to the top chord,

Fig ₀ 27 and 28 a further embodiment similar to that of FIGS. 25 and 26

29 and 30 a further embodiment similar to d <»r according to FIGS. 25 and 26, in which from the lower Cross-bracing unit can be pivoted into the interior of the boom tip,

31 shows a longitudinal section along the line XXXI - XXXI in Figs. 29 and

109841/1219

· :. ■> · ■: BAPORiGiNAU

211253a

32, 33 and 34 an embodiment in which the

The trolley and the jib tip can be centered at the same time.

Dur shown in Figs. 1 to 3 crane has one of a telescopic boom carried on box 1, which from oiner.i outrigger foot 2 and a Auslogerspitzc 3. the Tip 3 can be retracted into the interior of the boom foot 2, this process is accomplished with the help of known means (bottle trains or hydraulic lifting devices). The Auslogerfuß 2 is on an axis. 4 hinged to the top of the box. The mast is in the transport position 1 folded horizontally on a platform (Fig. 3) »during the retracted boom 2, 3 is folded down horizontally onto the mast 1.

On the lateral lower chords of the boom filler 2 and the Boom tip 3 run Hollen G of a 7 t trolley a load hook u carries.

This crane can be used in the following two versions will:

- In Fig. 1 the crane is shown as a distributor crane, in which the extended boom 2, 3 is a stationary one Maintains inclination while the trolley (7) moves along its track (double arrow 9)}

- In Fig. 2 the boom dos Xrans is raised, wherein the trolley 7 at the outer end of the extended boom 2, 3 is set, and a cable Io the TCcigurfg of the boom 2, 3 changed in the directions of the double arrow 11.

1 O 9 R L 1/1? 1 9

BAD ORIGfNAL

Sires of the essential features of the invention relates to the I'i'i- ^ el, which allow a smooth continuous course of the La \ a £ - ^ skhn of the trolley 7 after passing the over-;? Ar -vsstelle between the elements 2 nrsd 3 of the extended boom (Fig. 1). A first embodiment of this transition device is shown in FIGS. K to 6.

The boom foot 2 consists of a metallic support with a triangular cross-section. It has an upper belt 12 and two .inter belts 13, which are connected to one another by lateral cross bracing Ik Ληϋ a lower cross bracing 15. Each lower belt 13 has an inwardly open U-profile and continues upwards with an angle iron 16, on which the lower ends of a cross brace of the! "•!" eiazverstrebung 1 ^ i are welded. The rim of each Kolle 6 of the trolley 7 runs on the upper leg of the U-profile, while the lateral guide ring; 17 of the roller © 6 The cantilever point 3 also consists of a triangular girder provided with cross braces, which has an upper chord 18 and two lower chords 19, which are connected by lateral cross braces Po and a lower cross brace 21 Carrier with the triangular cross-section, which forms the Aufiiegerspitze 3, is arranged within the triangular cross-section of the boom foot 2, so that the boom tip 3 in the Inside the boom foot 2 is displaceable, the straps 19 being supported on support rails 22. Each belt 19 is composed of two angle irons which are welded together in such a way that they have a rectangular cross-section.

The straps I9 are inside the fixed straps, 13 des Auslegcrfußes 2 arranged, wherein the surface 19a of the belt I9 only at a distance, formed from the wall thickness of the Belt 13 and from the game required to slide the dam

BAD ORIGINAL - 9 -1 ■ 0 9 8 U 1/1? 1 9

Belt J 3, located below the surface 13a. The Seiteraufiomv.rnd 19b of the belt 19 faces from the outer wall 13b doj Belt 13 only the thickness of this belt 13 and the necessary Play the appropriate distance.

When extending the boom 2, 3 (Fiß ;. 6) the Kontiuui « did between the career paths that emerge from the belts Ij ui *, Assemble the straps 19 that go beyond this, by placing an angle profile 23, each wedge-shaped beveled profile walls (Fig. 5) ensured, which the undisturbed running of the rollers 6 of the trolley 7 during the transition caused by the belt 13 to the belt 19. This angle profile 23 is both axtf of the surface 19a and on the Outer surface 19b of the belt 10 on which it is placed, attached. The fastening can take place in a known manner, in particular by bolting or screwing.

7 and 8 is a modified embodiment shown, in which the track of the fixed element 2 of the boom consists of two Winkeloloisen 24 that consoles are welded on the outside of the lower chord 13. Each angle iron 24 has an upper horizontal leg, on which the rim of the roller 6 of the trolley 7 runs, while the outer edge of the leg as a guide for the Wheel flange 17 dor roller 6 is used.

Quor tabs 25 are attached to each lower chord 19, from which jode has an axis 26 to which an arm 27 is articulated. A hole 28 is provided in dom arm 27, so that this with the La. '· before 25 »over a hole 29 or oin symmetrical hole 3o »with. which tab 25 is provided, can be connected. A longitudinal beam 31 iw the form of a i / inkoloisons is connected to the lSndon dor arms 27. It is recognizable that each Winkeloisen 31 can be folded down, either

-Ic-

41/12 19

BATH ORIGINAL

- Io -

= ■ - inwards (Tig. 7) under the lower Krouz strut 2ί the boom tip 3 ι which by sliding iia boom foot 2 is withdrawn or

"= ■ outward by pivoting about the axes 26 in the direction of the arrow 32 (Fig. 7)" to align with the corresponding Wi.iikoleisen 24 (Fig. S).

This process is accomplished by simply bolting the hole 20 accomplished in the arm 27 with one of the holes 29 or 3o of the tab 25.

Fig. 9 ^WI id Io show another embodiment sforni, in which a longitudinal axis 33 is arranged above every lower chord 19, around wolcho a. Side member 3 ^ is pivotable. When this longitudinal beam 34 is folded inwards (Fig. 9) against the outer wall of the corresponding cross bracing 2 ©, it lies within the Uary crack given by the inner surfaces of the lower chord I3, so that a retraction of the boom tip 3 by fusing into the interior of the Auslogerfußes 2 can be done.

If, on the other hand, the boom is extended (Fig. Lo), it is sufficient to pivot each side member 3 ^l l upwards and outwards in the direction of the arrow 35 S5U so that its flat surface 36 is horizontal and in alignment with the upper surface of the belt 13 • runs. The transition between the two raceways 13 and 3δ is ensured in this way, since their upper and outer surfaces for guiding the Kolleri C are aligned with one another.

Si © In Figs. 11 and 12 illustrated embodiment is slightly modified in the '/ srglaich to the above-described examples, since each of the boom tip Untergui't 3 Faifts dis! an upwardly and outwardly open angle iron on most. In the opening of this angle iron * there is a longitudinal

BATH ORIGINAL -11-

109841/1219

21 *? 5

gelonkachse 37 arranged on which a longitudinal beam 3 ^ is linked to the in the retracted position against the Auricular surface of the lateral cross bracing 2o (Fig, H) can be folded down. Vie in the case of Figures 9 and Io, the carrier 38 has an upper running surface 39 which is in line with the upper running surface of the corresponding fixed belt 13 when the boom is extended and the girders 33 in the direction of arrows 4o in FIG. 12 outwards gcs swivel t s ind.

Fi ;;. 13 and 14 show a further Ausführungsforiu in which the carrier 3O dos previous example by U-shaped Winkeleison 41 are replaced, wolchö by 9o around their longitudinal axis 37 are pivotable. Iode axis 37 is as in the previousgehoi.vloxt Example arranged in the opening dos hinkeleiscns 42, which forms the belt of the boom tip 3. In the In the retracted position (Fig. I3), each U-iron 41 is open at the bottom, its upper wall extends horizontally. Through this it is possible to adjust the boom tip 3 by sliding it in retract the I: iore of the boom foot 2.

In the extended state (Fig. 14), the carrier 4l after outside folded in the direction of arrow 43, xiii them with the To align the running surfaces of the feston belts 13.

Another modified embodiment is shown in FIGS shown when on each cross-scatter a longitudinal axis 44 is provided approximately halfway up which Anno 45 are articulated, which are attached to the jib tip 3 forming triangular beams atisseii are located. All fold-down arms 45 on the same axis 44 are on their outer ends connected by a longitudinal angle iron 46. In the folded state of the arms 45, these lie angularly iron 46 on both sides of the upper chord Iu, whereby the boom tip 3 is pushed forward into the boom foot can be inserted (Fig. I5 and 17).

- 12 -

10984W1? -19

BATH

2 <air- extension of the boom, it is sufficient that I / inkelsisen 46 by pivoting in the direction of Pfsils 47 outwardly zn flaps (Fig. Iu) to the arms 45 atsf the belts 19 of the cantilever tip 3 hang up, each angle iron 46 in the 733; ■ ':. Kiigorung the upper and side running surfaces of the corresponding fixed belt 13 comes to rest.

iigc 19 and 2o show an additional embodiment -jslsher the running tracks for the trolley are suspended. the Trolley 7 protrudes over pairs of rollers 48 and 49 »di © on one Secure the horizontal cross member with a hanger bracket (5o5 between the two roles (4u, 49) of each Hollenpaare is located. Each outer roller 48 provides the suspension the trolley 7 safe when this is located above the boom 2, while the corresponding roles are not supported. The rollers 48 run on a horizontal one Longitudinal leg 51 'directed into the interior of the boom is. This leg 51 is part of a longitudinal beam in the form of an angle iron, the outer vertical leg 52 of which on the outer surface of the corresponding fixed Lower chord 53 of the boom foot 2 is welded.

Above each lower chord 19 of the jib tip 3 is a longitudinal one Hinge axis $ 4 arranged around which an angled support is rotatable, the two at right angles to each other has adjusting legs 55 and 56. When the legs 55, 56 are folded up, supported against the outer surface of the lateral cross bracing 2o, are the outer contours the outrigger tip 3 from the inner outline of the outrigger foot 2 enclosed (Fig. 19), whereby the retraction of the Toleskop boom can be done.

When the boom is extended, it is sufficient to pivot the legs 55, 56 outward about their axes 54 in the direction of the arrows 57 in FIG. 10 _f about the legs 55 in the vertical

- 13 -

109841/12 19 ORIGINAL BATHROOM

to apply against the outer surface of the lower chords 19. the
Legs 56 are then located below the lower chords I9 and are directed outwards. Joder horizontal legs
56 lies opposite a Schenkol 5I at the same level, but the legs 5I and 56 are offset from one another in the longitudinal direction. Only in the transition zone, ie at the level of the transition from the boom foot 2 to the extended boom tip 3, do the legs 51, 56 run next to one another as seen in the longitudinal direction. Although the legs 5I and 56 are not aligned with one another in the longitudinal direction, the smooth transition from one track to the other for the trolley 7 is ensured, on the one hand by the fact that it runs under the boom foot 2 on the rollers 48, and on the other hand by the fact that it moves moves under the extended boom tip on the rollers 49 (Fig. 2o).

In Figures 21 and 22 is another embodiment
shown, in which the lower chords I9 of the boom tip 3 move inside the lower chords 13 of the Auslogerfußes 2 (Fig. 2I) ₁ when the Ausloger is retracted. It
after extending the boom (Fig. 22), it is sufficient to operate screw jacks 58 on the lower part of each
Fixed belt I3 are arranged to lift the belts I9 and their upper running surface level with the upper
To bring the running surface of the corresponding belt 13, whereby the transition for the tracks of the LaufUatzenrolle 6 is made.

After alignment, the device is secured using Bolssen 59
locked, which are pushed into openings 60 and 6l, which the straps 13 and "I9 pass through"

Flg. 23 and 2't show a further embodiment in which the two lateral cross struts 2o of the boom
Tip 3 form a solid frame, which is reinforced by cross braces 62 and each cross brace 2o

- 14 -

109841/1219

BATH ORIGINAL

- i4 -

has a longitudinal joint axis 63 at its lower end. On each axis 63 there is a rigid lower strap made of oixiem 64 and a half lower cross brace 65 existing unit articulated. This has plates 66 inside, in which holes are provided that allow

- Either the plates 66 on the fixed inner plate ii 67 of the lateral cross struts 2o to be attached when the straps 64 are retracted into the interior of the boom be brought in the direction of arrows 68 in Fig. 23,

- Or the plates 66 of the right side with those of the left side of the boom tip 3 to connect to the two halves of the cross struts 65 a complete and to form rigid lower cross strobing, wherein the tilt straps 64 are raised and spread outward to extend the tread of the corresponding fixed strap I3.

In addition, the upper chords 18 of the boom tip 3 carry lateral legs 93 which rest on legs 94 of the belt 12 of the boom foot 2. This results in a guide for moving the boom tip 3 into the boom foot 2.

With the belts 64 folded in (FIG. 23), the boom can be shortened by moving the tip 3 into the interior of the boom foot 2 When the boom is extended, the half cross struts 65 (FIG. 24, arrows 69) are folded down and locked together to provide a continuous tread for to manufacture the rollers 6 of the trolley 7.

The embodiment according to FIGS. 25 and 26 has a louder tip 3, with an upper longitudinal belt 13 and

BATH ORIGINAL

109841/1219

with oinom centrally located lower chord 7o is. The boidon straps 13 and 7o are perpendicular through a «. rigid strut 71 connected to one another. The Gwrt "<> forms during the shift in the fixed rail * 95 of the boom foot 3 ciio guidance.

Each lateral cross bracing 2o is articulated at its apex on a longitudinal axis 72, which the upper chord carries Lö. At its lower end, each cross strut 2o is firmly welded to its corresponding lateral lower chord 19. On the inner surface of an iodine belt 19, a longitudinal hinge axis 73 is provided, to which half a lower cross strut Jh is articulated. This slept inside the boom tip 3 rait locking plates 66 ib, similar to those previously described.

In the retracted position of the telescopic _{boom 2 f} 3 (Fig. 25), the plates 66 of the Ilalbstraben 7k are raised inside the boom tip 3 and overlap in the area 4 of the central strut 71 · The lateral cross struts 2o and the belts ^ n are pivoted about the axes 72 in the direction of the arrows 75 approach each other, whereby the cross section of the boom tip 3 is reduced.

With the boom 2, 3, the boidon half cross-struts are Th. In the direction of arrows 76 after use below Λ folded and the two plates 66 are locked together, whereby the braces 2o 'ausoinandei-gospreizt are in the direction of arrows 7 and the The running surfaces of the belts I9 are exactly in line with the running surfaces of the fixed belts.

27 and 23 is a modified embodiment shown * in which the boom tip 3 consists of an arrangement formed from two units, which are located on longitudinal axes 72 are articulated on a common upper belt 10.

- 16 -

109841/1219

BAD ORiGiNAL

JeeK of these units ordered from a lower Kraizverstro- hm ·.: - ·; ? ß and half an intermediate strut 79 · The parts 2o, 78, 79 result in a rigid unit with a triangular cross-section, one corner of which is formed on the corresponding longitudinal chord. In addition, dio boom tip 3 a rigid, non verforiubaren part 96, 97, which forms a support übsr the installation length of the boom tip 3 i ^'B jib, whereby dio guide tet during the displacement legal-Io ± 3rd

Between the two inner cross struts 79 a distance Go is predetermined from each other by the distance of the two axes so that jode unit 10, 2o, 78 "79 2 is pivotable about their Anlenlcachso". By this arrangement the two units 19, 2o, 7 ^ ₁ 79 (Fig. 27) are brought closer to each other in order to reduce the distance between the belt 19 and to retract the boom tip 3 into the inside of the boom foot. Fig. 28) only spread apart and locked in this position by inserting intermediate parts in order to bring the running surfaces of the belts 19 as extensions to the running surfaces of the belts I3 exactly.

The l ^? Figs. 29 to 31 show a further embodiment in which the upper chord of the jib tip 3 carries a longitudinal joint axis 32, to which the lateral struts 2o are articulated. Each of these cross struts is frictionally connected to your running belt 19 with its lower part. The two units 19, 2o can therefore be moved closer to one another by pivoting about the axis 82 (FIG. 29, arrows 33) or spread apart from one another (FIG. 3o, arrows 8k) .

On the inner surface of the one belt 19, a longitudinal joint axis 85 is provided, around which a lower cross brace 86 is threatened, which is locked at the other end

- 17 -

1 O 9 8 A 1/1 2 1 9

BATH ORIGINAL

lung plates. These are either with locking plates u7, the inside of the cross bracing 2o slightly Spaced below the common axis 82, or with plates 80 facing towards the inner surface of the other belt 19 are welded, lockable.

The two belts 19 are brought closer to one another when the lower Cross strut 36 locked to the plates 37 (Fig. 29) is. Due to the reduced cross-section of the boom tip 3, this can be inserted into the interior of the boom foot 2. be driven.

When the plates of the lower strut 86 are locked to the plates 88 (FIG. 3 °) after the telescope boom has been extended the belts 19 are spaced apart from one another and form the exact extension with their running surfaces the running surfaces of the fixed belts 13

As described above, the boom tip closes at its inner end a rigid one, not shown Part one that extends over the insertion length of the boom tip 3 in the boom foot 2 and the guide track during of advancing forms.

The modified embodiment shown in FIGS. 32, 33 and 34 simultaneously enables automatic centering of the trolley 7 and the boom tip 3. The embodiment is similar to that shown in FIGS Placement of a wedge-shaped angle iron 98 takes place. In the embodiment according to FIGS. 32 and 33, each lower longitudinal belt 19 of the boom tip is inclined so that the likewise inclined rollers Q ⁽ ) _% whose axes 9o are firmly connected to the outer belt 91 of the boom foot 2 can roll off on it in case of

* To ^ -

103841/12115

BATH ORIGINAL

4 to 6, the belt 91 is extended to obesi cfcsrch the angle iron 16 to which the lateral cross brace 14 is welded. In contrast to this, the running surfaces 91a and 91b are inclined inwardly parallel to the running surfaces 19a and 19b of the lower belt 19. This enables the use of the angle iron 98 of known shape, so that an angle iron 23 with two inclined surfaces, as is generally the case with the exemplary embodiment according to FIGS. K to 6, is no longer required.

Furthermore, the trolley 7 is hung on cylindrical rollers 6 which, as in the case of FIGS. 1 to 6, can be provided with guide cranes 7. In the embodiment according to FIGS . 32 to 3k, the axis 92 of each roller of the trolley 7 runs parallel to the axis 9 ° of the rollers 39 of the displaceable jib tip 3.

It can be seen that this device is its own weight the boom tip 3 and the trolley 7 automatically the centering

- On the one hand the trolley 7 on the belts 91 or 19J

- On the other hand, the boom tip 3 on the rollers 9o des Aaslegerfußes 2 causes, eliminating any lateral play

not applicable.

The principal advantages of a crane with a telescopic boom according to the invention are as follows:

- = The crane is versatile as it can be used with the trolley of the boom or with the boom raised;

" Compared to conventional distributor cranes, telascopying the boom is easier, which means that you can achieve a S @ itg © gain during assembly}

109841/1219 BADOR ₁ GtNAL -19-

9 ς ■ *?

«Fin transport of the whole Kraus is feasible, where the Lleraente 2, 3 are pushed into each other?

the crane claims when it is folded up for road transport State less space (I ig. 3) »something of it is of particular interest if the iiast 1 is also telescopic;

it's a quick change in boom length without additional assembly of elements by simply extending the boom tip more or less completely 3 possible with respect to the boom foot 2, in particular the lashing of the rails between the elements 2 and 3 are omitted.

Expectations:

10 9841/1? 19

BAD ORIGtNAL

Claims (1)

- 2ο - Expectations Crane with a telescopic boom made of at least two elements in the form of a boom foot and a boom tip, which can be slid into one another, thereby characterized in that one (3) of the two elements has a smaller cross-section than the other (2) in which it slides in the retracted position, the running track for a trolley (?) in the extended boom position in the Deroich two lateral lower chords (13 or 19) of each element (2, 3) and means are provided to facilitate the movement between the belts (13 »19) ι the both aligned as well as transversely attached to one another in the longitudinal direction connect, to shape continuously. 2. Crane according to claim 1, characterized. marked, that the track consists of the legs lying on the belts (13 »19) above and to the side a l / inkeloisens (16) is formed and that the means for the transition between the pair of belts (13, 19) include wedge-shaped angle profile (23), which the extendable Uraschlioessen part of the sliding belts (I9) and with the thinner ends against the ends of the outer belts (19) are directed, each angle profile (23) having two mutually perpendicular, externally beveled side parts has which on the upper surface (19a) and on the outer side surface (19b) dea corresponding retractable The belt (19). 3. Crane according to claims 1 and 2, characterized that the tracks of each belt (I3 or IQ) both dos Auslogerfußes (2) and also the boom tip (3) with respect to the vertical are inclined to automatically move the front in the release foot (2) - 21 - 10 9 8 4 1/17 19 sliding jib jib (3) and the trolley (7) the two elements (2, 3) of the extended boom. * - to center. 4. Crane according to claim 1, characterized in that that the career of the retractable Elemontes (3) near the belt (I9) from one to one There is longitudinal axis hinged longitudinal beam, which is arranged near the belt (I9), with the beam in the interior of the retractable boom element (3) is pivotable to the retraction of the element (3) into the interior of the boom assembly (2) enable. 5. Crane according to claims 1 and 4, characterized that joder adjustable support of the boom tip (3) when pivoting in or out moved below the belt (13). 6 · Crane according to claims 1 and 4, characterized that in the folded position each movable support of the boom tip (3) by pivoting above the belt (I9) and outside the side struts on the jib tip (3) lies * 7 · Crane according to claims 1 and 4, thereby g e ~ indicates that each movable carrier, which forms the track of the boom tip (3), on a lateral longitudinal axis is articulated, which is below the corresponding belt (I9) dor boom tip (3) extends, whereby by folding out and down the carrier the extension of the track of the Boom foot (2) takes place. 8. crane nedi claim 7 »characterized in that the golf knee of the carrier - 22 ~ 109841/1219 BATH ORIGINAL , the side of eggs Auslegerspitzo (3) at half the height between dom respective lower flange (19), "Kid dom top chord (ISS) is arranged wherein the carrier consists of an angle iron, which foldable to increase of the belt (IS)) to the" = sea is to form the continuation of the career of the trolley (7). 9. Crane according to claim 7, characterized in that each carrier of the boom tip (3) is hinged directly to the corresponding belt (I9) and through the fold-out when the boom tip C3) is outside of the sliding belt (I9) and in the vicinity of the inside of the fixed strap (I3) comes to lie, its isnteres end has a horizontal leg facing the straps outwards, which is opposite to another horizontal fixed leg, d®2 * facing inwards and tni c the strap (13) is tightly tied in front , and that the trolley (7) is suspended from horizontal axles, each of which carries a right and a left roller, with the track below the
A ^ slegerfuü (2) is formed by a horizontal leg of the fixed belt (13) on which the left rollers run, while under the extended *
iwsslegerspitze (3) the right rollers are located, which aiii * d & n getra from the extended boom tip (3)
unroll the horizontal legs of the track. ₀ Eg * an according to claim i, characterized
shows that under the lower chords (I9) ^ fCiFschiebbaren Auslegerspitae (3) Hebaaiittel in Ferii
· Ψ®η screw jacks (5 &) for lifting the Auslogerspits-e (3) after the extension of the boom provided s ± m & ₉ Uiü !. ciio lower chords (I9) to the level of the upper edge of the belts (13) of the boom foot (2), whereby the belt © C 2.3) is locked with the adjustable * (19) by bolts (59) _s the in 109841/1219 SAD ORIGINAL - ■ - 3 - aligned openings (60, 6l) of the belts (13 to% 19) inserted the connection between the boom fit ':. (2) and the boom tip (3) as soon as riitf Surface of their straps in the straight extension lie. 11. Crane according to claim 1, characterized in that that the retractable extension tip (3) has the shape of a prismatic strut of triangular cross-section with a top chord that extends through two level lateral cross struts connected with two lower chords that form the running track of the retractable baron Carry out boom tip (3), woboi these lower chords hinged to a longitudinal axis and inwardly displaceable or can be expanded outwards when the boom is extended. 12. Crane according to claim 11, characterized that each lower chord is hinged to the lower part of its existing lateral bracing is. 13 · Crane according to claim 11, characterized in that each lower chord with its lateral cross bracing is firmly connected, with this is articulated with its apex to the longitudinal upper chord. 109841/1? 19 BATH ORIGINAL ² H. Blank page