EP1065166B1 - Telescopic crane - Google Patents

Abstract

A jib is fitted with one or more bracing supports (2) tilted towards a rocking level that link to a tension device (6,7) running along the jib. The bracing support's angle of tilt is selected in such a way that the lateral load having an impact on the jib is taken up partially or completely by bracing.

Description

TECHNICAL AREA

The invention relates to a telescopic crane which consists of an undercarriage, one rotatable thereon arranged superstructure, a counterweight and a boom, which in turn a main boom with a basic box and at least one in and extendable telescopic shot. The invention further relates to a Guy device for attachment to a boom of a telescopic crane of the previous Art.

STATE OF THE ART

Telescopic cranes of the aforementioned type are known. DE 29 17 829 A1 shows one Mobile crane with telescopic boom that can be swiveled on a rotating superstructure is articulated. In the mobile crane presented here, the lifting capacity of the crane should can be increased by placing one on the superstructure of the mobile crane Pick-up and lifting device is provided for an additional counterweight. The Pick-up and lifting device can have a rearward-projecting support which expediently directed obliquely backwards and upwards and for receiving the Additional counterweight can be lowered. It is pointed out that it is particularly beneficial would be if the support with the telescopic boom above its articulation on the superstructure is connected, as this results in a relief of bending and buckling of the telescopic boom becomes. A tension cable is used in particular to connect the support and the telescopic boom proposed.

A similar mobile crane with telescopic boom is described in DE 31 39 853 A1. Again, a counterweight is provided, which by means of a superstructure on the vehicle attached, to the rear placed, in its inclination changeable mast on a appropriate projection can be brought. The counterweight is unloaded in Dependence on the change in the center of gravity of the device as a result of Controllable swiveling of the boom.

DE 38 38 975 C2 also shows a telescopic crane with a swing-out mast for a counterweight attached to a hanging device. The mast is up on itself the mast cylinder supporting the superstructure can be erected. The mast itself has one Telescopic extension, at the tip of which a pivot point for a length-adjustable Hanging device and a length-adjustable guy for the adjustable boom is available.

Telescopic cranes of the type described above are depending on when extended Angle of attack exposed to loads of different sizes. For flat and medium The angles of attack are those that occur in the clamping of the extended telescopic sections Loads are an important criterion for the maximum load. For one A so-called superlift operation has been developed to relieve stress Service. DE 31 13 763 A1 describes a basic configuration of a Telescopic crane, which allows a superlift operation, discloses. In the area of articulation a The luffing cylinder for the main boom is on the basic box according to DE 31 13 763 A1 anchoring bracket extending transversely to the boom. The free end this guy stand is over ropes or rope strands with the end of one of the telescopic shots and connected to the foot of the main boom. A detailed solution provides that the Clamping bracket made up of both sides of the basic box, which extend upwards There are struts that are rigidly connected. It is also stated that the Guy rack can be folded into a transport position on the basic box. The connection between the guy stand and the boom foot is also considered to be unchangeable in length proposed. In addition, a winch arrangement is provided to the length of the to change the rope provided between the guy stand and the telescopic boom. Moreover can a control device for the winches to apply a predetermined rope force the guy stand and the guy wires connected to it can be provided. It is in the Description mentions that by training with yourself from the basic set up extending struts that are at a fixed distance from each other and only like one Guy stand is pivotable in the seesaw plane, including lateral bending deformations of the Have the boom system reduced, for example by wind forces or load swaying can arise.

For the sake of good order, it should be noted that the luffing level is the level in which the boom moves when it is pivoted about its horizontal pivot axis. The luffing plane is therefore perpendicular to the luffing axis of the boom.

A realized telescopic crane with a "superlift" is from, for example Company brochure: Mannesmann Demag Fördertechnik; Demag AC 1600; 04/96, pages 5, 17 and 27 or also known from DE 38 40 408 C2. So is to increase the load capacity and Reduction of the deflection of the extended main boom on the basic box of the The main boom has a guy stand that can be placed on the basic box. This Tensioning bracket is with an almost unchangeable tensioning with the foot area of the main boom on the one hand and with a further bracing, which as a rule is adjustable in length, with the head or collar of one of the inner telescopic sections on the other hand connected. This stiffening arrangement is applicable to the basic device alone, but also in connection with the arrangement of one formed from lattice tower parts rigid or luffing jib.

A design similar to superlift operation is described in DE 297 20 972 U1. The telescopic boom shown here includes a rope at the lower end of the boom attacks and via an associated with the boom base, in its angular position adjustable device is guided in the manner of a guy stand. So that should be as Guy rope used return rope to pull in the various telescopic shots of such a telescopic boom serves a stabilizing effect on the boom exercise and, in particular, to prevent an inadmissible deflection of the telescopic boom. The guy device taking over the function of a guy stand comprises a Linkage around a pivot point on the telescopic boom or its basic box is pivotable. A piston-cylinder device is available for installation. It is emphasized that this linkage in its angular position relative to the telescopic boom is changeable, i.e. so in the seesaw plane. This will deflect the boom in the Rocker level prevents, but not a side deflection.

Finally, it should be noted that from DE 1 751 383 a crane boom in Shell construction is known. This crane boom consists of a single torsionally rigid Support body with a preferably circular cross section. The support body is over and / or trussed. As a special embodiment, all-round overvoltage is provided, what happens to spars. In particular, there are one or more star girders on the crane boom provided, at the radially outer ends of the spars are attached and along of the crane boom. This star girder and the spars form on the crane boom a spatially fixed tension. Obviously this crane boom is for Tower cranes provided.

An embodiment of a mast of a tower crane which is similar to DE 1 751 383 or here a derrick crane is from the magazine "Deutsche Hebe- und Fördertechnik", 1972, Pages 576 - 580 known. Here are both a lattice tower and one Lattice mast realized fixed tensions and struts.

A boom with horizontal rope bracing is known from DE 37 34 919 A1. This here The swiveling boom shown has a plurality that extends parallel to the swiveling axis Trusses that are braced on ropes. The trusses are ultimately the shown boom design nothing more than a braced beam with fixed Traverses. Incidentally, this type of boom is suitable for, for example, crawlers Support frame provided.

A boom of a crane for container operation is known from DE 1 531 155. It will particularly dealt with the special problem of handling containers. A luffing jib of a double-link luffing crane is disclosed, in which two the outer part of the boom forming beak-like spreadable arms are present wear two head rolls or head roll groups. The arms are in such a spread position ascertainable at what distance the centers of the two roles or role groups from each other, approximately equal to the distance between the centers of the Container traverse carrying lifting rope sling is. The two arms are in the coupled together stiffened against each other and are positive and shear resistant connected. The spreadable arms themselves are again, as already explained, against Deflected by means of a guy stand.

It has now been shown that telescopic cranes of the type explained above also in a steep position using the previously explained Superlift technology only a limited load be able to record.

PRESENTATION OF THE INVENTION

The technical problem underlying the invention is a telescopic crane To provide the increased load capacity, especially in the steep positions of the boom can absorb less lateral deformation.

This technical problem is solved by a telescopic crane with undercarriage, rotatable superstructure arranged thereon, counterweight and a boom that one Main boom with a basic box and at least one that can be pushed in and pushed out Telescopic shot, with at least one guy support arranged on the boom is present, which extends substantially in the longitudinal direction of the boom Clamping means is connected and the inclination to the seesaw level can be changed.

In particular, it is individually adapted to the respective luffing position of the boom Increased load capacity, especially in a steep position, because, as has been shown, in this case the lateral deformation of the boom often limits the load The criterion is, however, now that the guy support can be changed in inclination to the luffing plane lateral forces that act on the boom can also be absorbed. In particular, such a design can also have a double function, namely in that a normal superlift operation in one operating position and in another Operating position, a combination of superlift and lateral guying is feasible. In normal superlift operation, the new guy support according to the invention is in the Rocker level or runs parallel to it. With the combination of superlift and side The guy support takes up an angle to the luffing plane.

In an exemplary embodiment, the inclination of the guy support is in one plane changeable transversely and / or longitudinally to the longitudinal direction of the boom. In other words, the Guy support is in different planes perpendicular to the luffing plane reclining when lying down.

The change in the inclination of the luffing plane can be gradual or continuous Swiveling the at least one guy support can be adjustable. An easy one Embodiment provides that only several different levels of inclinations to Rocker level are ingestible. Another embodiment can provide that the inclination is adjustable in the range of greater than 0 ° to 90 ° with respect to the seesaw level, which is a more precise Adaptation to the respective steep position of the boom and the foreseeable loads allows.

For example on the boom at least one opposite the Rocker plane inclined guy support arranged with a substantially in Longitudinal direction of the boom extending clamping means is connected, the The angle of the guy support is selected so that it acts on the boom lateral or partial load is completely absorbed by the guying becomes. The inclination of the guy support can be transverse to the longitudinal direction or in Longitudinal direction or superimposed transversely to and in the longitudinal direction of the boom.

Preferably, two are inclined on the top of the respective boom element Guy braces are provided, usually the angular inclination of both Guy supports are the same. But depending on the direction of the boom attacking forces may also be different. The foot ends of both guy supports can be connected to the top of the boom at a common location, but also offset from each other. According to a further feature of the invention is the foot end of at least one guy support in the transition area between Top side or respective side wall connected to the boom. Alternatively there is also the possibility to cross the foot end of at least one guy support To arrange the longitudinal axis of the boom and overhanging this beam.

The exemplary arrangement has the advantage that, depending on the angular position Guy supports: the amount of guy force that acts in the lateral direction, can be changed continuously or continuously. In the case of the arrangement of two this means that in one extreme position, d. H. in the vertical position, the two guy supports in parallel are the same Effect in the sense of a superlift operation like the well-known guy stand. In an angular position <90 ° to> 0 ° for the two guy supports will be the effective one Clamping force divided into a superlift operation component and a component lateral guying. In the second extreme position, i.e. H. in the horizontal position, the two guy supports only reinforce in both directions.

The respective free head end of the guy support is over a first clamping device optionally with the undercarriage, the uppercarriage, the foot area of the boom, the fixed or separately guided counterweight or the floor in the direction Foot end of the boom and a further clamping device with a selected one Place the boom connected in the direction of the boom head. The one you want Angular position of the guy supports can be gradual or continuous Swiveling the guy supports can be adjusted. That is also one asymmetrical angle adjustment possible. This means that when attacking Lateral force only on one side the respective guy support more towards the side Guy is inclined while the second guy support is in a central position remains.

Since the distance between the clamping devices and the boom also influences the desired Reinforcement has been provided, the length of the guy supports in steps or to change continuously. The clamping devices can be used as a rope or as a rod be trained. The clamping device or the clamping device can be with and without Preload can be arranged. In the case of a preload and one The clamping device can be readjusted with a clamping device together. This is preferably a winch or a piston-cylinder unit. But also the angle adjustment and / or the change in length of the guy support can in Can be used as a tensioning device. The jigs are either on the guy supports, on the boom, on the superstructure or undercarriage or on Counterweight can be arranged.

The guy supports on the main boom are preferably in the area of the Basic box arranged, especially in the front area between the Linkage of the luffing cylinder and the front bearing. For continuous Adjustment of the guy supports is preferably every guy support with one on the piston-cylinder unit supported on the basic box. to Arrangement of the winch has a further feature of the invention Guy support on two spars, between which the winch can be arranged.

The equipment of the telescopic boom can be supplemented with the arrangement a rigid or luffing jib made of lattice boom parts. Also on the proposed lateral bracing can be attached to these cantilever elements become.

Side guying can be used particularly effectively if the Crane with a measuring device to record the lateral deformation of the boom is provided. If the deformation exceeds a specified permissible value, the tensioning device connected to the guying is activated and the guying tightened. The degree of lateral deformation can be direct or indirect Crane sizes can be determined. For example, these are the rope tension, the rope length and rope elongation. But also in terms of the forces acting on the boom the side wind, the sun and the boom prevailing temperatures can make a statement about the degree of lateral Deformation can be made.

An anchoring device that can be attached to a telescopic crane with jib in particular on both sides of a boom guy supports in a desired inclination can be brought relative to the luffing plane, and thus the advantages of the aforementioned type can be realized even better, includes a frame to be arranged on the boom and two guy supports, each for connecting to one essentially in Longitudinal direction of the boom extending clamping means is designed. One of the two Bracing supports are seen on the frame in the longitudinal direction of the boom right side pivoted, and the other guy support is on the Frame seen in the longitudinal direction of the boom pivotable to the left arranged.

A piston-cylinder unit is preferred for lateral pivoting provided with which the guy support is then connected. This is particularly one any inclination of one of the guy supports with respect to the luffing level of the boom on which the guy is to be fixed, adjustable.

Another exemplary embodiment of the present invention provides that the Frame of the guy device includes a swivel joint, so that for the Transport of the telescopic crane, the two spacers can be put down on the boom. In order to is, as in the known superlift operation, a convenient transport position achieved Anchoring device does not have to be brought separately to the place of use of a telescopic crane become.

Is preferably on the frame for erecting the frame with the two on it pivoting guy supports at least one fastening device for one Piston-cylinder unit provided. It is similar to the configuration explained above preferably each guy support with a winch, which acts as a tensioning device for the serves essentially in the longitudinal direction of the boom clamping means.

Each guy support can be designed to be the largest possible Swiveling to the side is supported on the foot side of the boom.

In an exemplary embodiment, each guy support has two spars that extend over Cross struts are connected.

Preferably, the inner spar of a guy support on the foot side End up a joint that allows pivoting to the side.

Further preferred is in the lower area of the guy support between the bars Arranged winch.

Finally, in an exemplary embodiment, the frame of the Anchoring device via fastening straps on a basic box of a main boom attachable to a telescopic crane.

DESCRIPTION OF EMBODIMENTS OF THE INVENTION

Fig.1a-1c

als Prinzipskizze die mögliche Anordnung einer gegenüber der Wippebene geneigten Abspannstütze

Figur 2

als Prinzipskizze die Anordnung zweier geneigter Abspannstützen mit einem gemeinsamen Fußende.

Figur3a-3d

als Prinzipskizze die mögliche Anordnung zweier geneigter Abspannstützen mit getrennten Fußenden

Figur 4

als Prinzipskizze die Anordnung einer quer liegenden Abspannstütze

Figur 5a

in einer Vorderansicht ein praktisches Ausführungsbeispiel mit zwei neigbaren Abspannstützen.

Figur 5b

eine Seitenansicht von Figur 5a.

In the following, several exemplary embodiments of the invention are described in more detail with reference to the accompanying drawings for further explanation and for better understanding. It shows:

1a-1c

as a basic sketch, the possible arrangement of a guy support inclined to the luffing plane

Figure 2

as a basic sketch, the arrangement of two inclined guy supports with a common foot end.

Figur3a 3d

as a basic sketch, the possible arrangement of two inclined guy supports with separate foot ends

Figure 4

as a basic sketch, the arrangement of a transverse guy support

Figure 5a

in a front view a practical embodiment with two inclinable guy supports.

Figure 5b

a side view of Figure 5a.

In FIGS. 1a-c, the possible arrangement of one another is shown as a basic sketch the guy support inclined. The guy support 2 is preferably on the top 3 of a symbolically shown here Cantilever element 1 arranged. This boom element 1 can be a basic box or a shot from a main boom of a telescopic crane or that Lattice mast element of a rigid or luffing jib. The in Cantilever element 1 center axis 4 is also ideally the luffing plane of the boom. According to the guy support 2 is in relation to the luffing plane inclined at an angle α> 0. The dashed representation of the guy support 2 'should make it clear that the guy support 2 can also be tilted towards the other side. The free end 5 of the guy support 2 is preferably with a clamping means 6.7 connected to a rope. The connection of the clamping means 6, 7 is not shown here a fixed location on the boom or a clamping device such as Piston cylinder unit or winch. Tensioning the clamping means 6,7 can can also be reached without a clamping device. Firstly, in such a way that the clamping device 6.7 can be arranged at a smaller or larger angle α and then the Guy support 2 is further inclined. Alternatively, it is also possible to use the guy support 2 telescopic and a degree of tension by changing the length to reach.

In part b, the possibility of the guy support 2 is shown in the other Tilt plane at an angle β> 0. Sub-picture c shows the possibility of Bracing bracket 2 tending to overlap in both levels.

In Figure 2 is also a schematic diagram of the arrangement of two guy supports 2.1, 2.2 shown. The peculiarity of this arrangement is that both Guy supports 2.1,2.2 with only a single foot end 8 on the top 3 of the Cantilever element 1 are arranged. The respective angle of inclination α1, α2 can be the same or different.

In partial images a-d of FIG. 3 there is also the possibility of a schematic diagram Arrangement of two guy supports 2.1.2.2 shown, which have a separate foot end 8.1.8.2 have. In the first drawing a, the foot ends 8.1, 8.2 are in the area the top 3 of the cantilever element 1, while in the sub-picture b the foot ends 8.1.8.2 in the transition area from the top 3 to the respective side wall 9,9 ' are located.

In the partial picture c the possibility is shown at least one foot end 8.1 outside to arrange the boom element 1. For this, there is a here on top 3 right extending bracket 10 is arranged, at the end of the foot end 8.1 the guy support 2.1, which tilts to the right, is located. In the drawing d the carrier 11 protrudes on both sides, so that both foot ends 8.1, 8 two guy supports 2.1.2.2 are outside the boom element 1.

A special case is shown in Figure 4. Here the transverse carrier 12 itself forms the two guy supports that extend to the right and left. This Special form can be deduced mentally if one considers the two in Figure 2 Angle of inclination α1 and α 2 can increase to 90 °.

In Figure 5 is a practical in a front and a side view Embodiment shown. The cantilever element is a in this example Basic box 13 of a main boom of a telescopic crane. Parallel to the top 14 of the base box 13, a frame 15 is pivotally arranged, which Fastening tabs 16, 16 'is connected to the basic box 13. At the bottom Carrier 17 of the frame 15 is inclined to the side in the respective end region Guy support 18.1,18.2 arranged. The continuous inclination is done by means of one on the respective guy support 18.1,18.2 and on the upper support 19 of the Frame 15 arranged piston-cylinder unit 20.1.20.2. The one shown here The illustration shows the special case that the guy support 18.1 stands vertically, comparable to a guy stand, while the left guy support 18.2 has the largest inclinable position. Each guy support 18.1,18.2 has two Spars 21.1,21.2,22.1,22.2, which are approximately parallel in the lower area and in the upper area Area run slightly to each other. The two spars are connected via Cross struts 23.1,23.2. The spar 21.2, 22.2, which is on the inside, points to an end 24.1, 24.2 on the foot end. The outer spar 21.1,22.1 comes at the greatest inclination of the guy supports 18.1.18.2 at the top of the Side wall 25.25 'of the base box 13 for the system. This particular anchor point the side wall 25, 25 'is reinforced by a sheet 26, 26'. Between the spars 21.1,22.1,21.2,22.2 is one in the lower area of the respective guy support 18.1,18.2 Winch 27.1.27.2 arranged.

As previously mentioned, the frame 15 is pivotally arranged, so for the transportation of the telescopic crane parallel to the two guy supports 18.1,18.2 Top 14 of the base box 13 can be stored. To rebuild is as Set-up aid each provided a piston-cylinder unit 28.1.28.2, which at one end the side wall 25 and with the other end in half the area of the respective Guy support 18.1 is arranged.

The tensioning means, each with a rope 29.1, is at one end via a rope thimble 31.1 Head area of the guy support 18.1 attached. From there it runs towards Boom head arranged deflection point (also not shown here) and runs back via a deflection roller 30.1 and. arranged in the head region of the guy support 18.1 thence to the winch 27.1.

On the rear side in the head area of the guy support 18.1 is one Guy strap 32.1 is arranged, which is the rear fuse for the respective Guy support 18.1 represents.

Drawing reference list

No. designation 1 jib element 2,2 ' guy support 3 Top of the boom element 4 Centerline-luffing plane 5 Free end guy support 6.7 clamping means 8th foot 9.9 ' Side wall bracket element 10,11,12 carrier 13 basic box 14 Top of the basic box 15 frame 16, 16 ' mounting tab 17 Lower support frame 18.1,18.2 guy supports 19 Upper support frame 20.1; 20.2 Piston-cylinder unit (side adjustment) 21.1,21.2 External spar 22.1,22.2 Internal spar 23.1,23.2 crossmember 24.1,24.2 Articulated guy support 25.25 ' Side panel basic box 26.26 ' sill reinforcement 27.1,27.2 winch 28.1,28.2 Piston-cylinder unit 29.1,29.2 clamping means 30.1,30.2 idler pulley 31.1,31.2 thimble 32.1,32.2 tie rod

Claims (42)

1. A telescopic crane, comprising:

   a carrier;

   a superstructure being rotatably mounted thereon;

   a counterweight;

   a boom structure (1) comprising a main boom having a boom base (13) and at least one telescope section being displaceable therein between retracted and extended positions, and

   at least one guy support (2; 2.1, 2.2; 18.1, 18.2) being arranged at the boom structure (1), wherein the guy support (2; 2.1, 2.2; 18.1, 18.2) is connected to a tension means (6, 7; 29.1, 29.2, 32.1, 32.2) extending substantially in a longitudinal direction of the boom structure (1) and the inclination (α, β) of which is variable with respect to the luffing plane (4).
2. The telescopic crane according to claim 1,
   characterized in that the inclination (α, β) of the guy support (2; 2.1, 2.2; 18.1, 18.2) is variable transversely and/or along the longitudinal direction of the boom structure (1).
3. The telescopic crane according to claim 1 or 2,
   characterized in that the inclination (α, β) of the guy support (2; 2.1, 2.2; 18.1, 18.2) is adjustable transversely and/or along the longitudinal axis of the boom structure (1) step-by-step or continuously by means of rotation of the at least one guy support (1).
4. The telescopic crane according to any of the preceding claims,
   characterized in that the foot end (8.1) of at least one guy support (2.1) is arranged on a support (10) being arranged transversely to the longitudinal direction of the boom structure (1) and extending beyond the boom structure (1).
5. The telescopic crane according to any of the preceding claims,
   characterized in that the free top end (5) of a guy support (2.1, 2.2; 18.1, 18.2) is optionally connected via a first tension means (7; 32.1, 32.2) to at least one of the superstructure, the carrier, the base area of the boom structure (1), a counterweight being fixedly or separately arranged, or the ground in direction of the base end of the boom structure (1) and via a further tension means (6; 29.1, 29.2) to a selected position of the main boom (1) or a component of an extension of the boom structure in the direction of the top of the boom structure (1).
6. The telescopic crane according to claim 5,
   characterized in that the free top end of the at least one guy support (18.1, 18.2) is connected via a tension means (6; 29.1, 29.2) to the head or to the collar of one of the inner telescopic sections.
7. The telescopic crane according to claim 5,
   characterized in that the free top end of the at least one guy support (18.1, 18.2) is connected via a tension means (6; 29.1, 29.2) to a part of a fixed or teetering jib boom made in the form of lattice tower parts.
8. The telescopic crane according to any of the preceding claims,
   characterized in that the length of the guy support (2; 2.1, 2.2; 18.1, 18.2) is variable.
9. The telescopic crane according to claim 8,
   characterized in that the length of the guy support (2; 2.1, 2.2; 18.1, 18.2) is variable step-by-step.
10. The telescopic crane according to claim 8,
    characterized in that the length of the guy support (2; 2.1, 2.2; 18.1, 18.2) is variable continuously.
11. The telescopic crane according to any of the preceding claims,
    characterized in that the tension means (6, 7) is a rope (29.1; 29.2) and/or a rod (32.1, 32.2).
12. The telescopic crane according to any of the preceding claims,
    characterized in that the tension means (6, 7; 29.1, 29.2; 32.1, 32.2) interacts with a tensioning device (27.1; 27.2).
13. The telescopic crane according to any of the preceding claims,
    characterized in that separately controllable tensioning devices (27.1, 27.2) are provided for the tension means (6, 7; 29.1, 29.2; 32.1, 32.2) of each guy support (2; 2.1, 2.2; 18.1, 18.2).
14. The telescopic crane according to claim 12 or 13,
    characterized in that the at least one tensioning device (27.1; 27.2) is arranged at the guy support (18.1; 18.2), at the superstructure, at the carrier, at the main boom (1), at the counterweight or at a boom extension.
15. The telescopic crane according to claim 12, 13 or 14,
    characterized in that the tensioning device is a winch (27.1, 27.2) or a piston-cylinder unit.
16. The telescopic crane according to any of the preceding claims,
    characterized in that a variation of the inclination of a guy support (2; 2.1, 2.2;18.1, 18.2) can be used to tense the associated tension means (6, 7; 29.1; 29.2; 32.1, 32.2).
17. The telescopic crane according to any of the preceding claims,
    characterized in that a variation of the length of the guy support (2; 2.1, 2.2;18.1, 18.2) can be used to tension the associated tension means (6, 7; 29.1; 29.2; 32.1, 32.2).
18. The telescopic crane according to any of the preceding claims,
    characterized in that the at least one guy support (2) is arranged on a top side (3) of the boom structure (1).
19. The telescopic crane according to any of the preceding claims,
    characterized in that at least one pair of guy supports (2.1, 2.2; 18.1, 18.2) is arranged at the boom structure (1), wherein at least one guy support (2.1; 18.1) can be inclined to one side of the boom structure (1) and where the other guy support (2.2; 18.2) can be inclined to the other side of the boom structure (1).
20. The telescopic crane according to claim 19,
    characterized in that the at least one pair of guy supports (2.1, 2.2; 18.1, 18.2) is arranged at a predetermined position at a top side (3) of the boom structure (1).
21. The telescopic crane according to claim 19 or 20,
    characterized in that the at least one pair of guy supports (18.1, 18.2) is arranged at the main boom in the area of the boom base (134).
22. The telescopic crane according to claim 21,
    characterized in that the pair of guy supports (18.1, 18.2) is arranged in the forward region between the pivot mounting of a luffing cylinder and a forward bearing on the boom base (13).
23. The telescopic crane according to any of claims 19-22,
    characterized in that the foot ends (8.1; 8.2) of both guy supports (2.1, 2.2; 18.1, 18.2) are connected at a common position with a top side (3) of the boom structure (1).
24. The telescopic crane according to any of claims 19-22,
    characterized in that the foot ends (8.1; 8.2) of both guy supports (2.1, 2.2) are spatially displaced to each other connected with a top side (3) of the boom structure (1).
25. The telescopic crane according to any of the preceding claims,
    characterized in that the foot end (8.1; 8.2) of the at least one guy support (2.1, 2.2; 18.1, 18.2) is connected to the boom structure (1) in the transition area between the top side (3) and the respective side wall (9, 9') of the boom base (13).
26. The telescopic crane according to any of the preceding claims,
    characterized in that for implementing a lateral inclination the at least one guy support (18.1; 18.2) is connected with a piston-cylinder unit (20.1; 20.2) which is supported by the boom base (13).
27. The telescopic crane according to any of the preceding claims,
    characterized in that the at least one guy support (18.1; 18.2) includes two poles (21.1; 22.1; 21.2; 22.2) being located in a approximate parallel disposition.
28. The telescopic crane according to claim 27,
    characterized in that a winch (27.1; 27.2) is positioned between the poles (21.1; 22.1; 21.2; 22.2) of the respective guy supports (18.1; 18.2) to tension the tension means (6, 7; 29.1, 29.2, 32.1, 32.2).
29. The telescopic crane according to any of the preceding claims,
    characterized in that a rigid jib boom made in the form of lattice tower parts is mounted to the head of the innermost telescope section.
30. The telescopic crane according to any of claims 1-28,
    characterized in that a luffing fly jib made in the form of lattice tower parts is mounted by means of at least one slewed support to the head of the innermost telescope sections.
31. The telescopic crane according to any of claims 1-30,
    characterized in that for determining the lateral deformation of the boom structure a measuring means is provided which is operatively linked to a tensioning mechanism which is capable of influencing the tautening degree of the lateral guying.
32. The telescopic crane according to claim 31,
    characterized in that the lateral deformation can be determined, directly or indirectly, via crane parameters as for example rope tension, rope length, rope extension as well as the forces acting on the boom structure in form of lateral occurring winds, solar radiation as well as the temperatures prevailing at the main boom.
33. A guying device for attachment to a boom structure (1) of a telescopic crane comprising a frame (15) to be mounted to the boom structure and two guy supports (18.1, 18.2), wherein each of the guy supports is constructed for connecting to a tension means (6, 7; 29.1, 29.2; 32.1, 32.2) extending substantially along a longitudinal direction of the boom structure (1) and wherein one guy support (18.1) is arranged for lateral inclination to the right hand side (24.1) seen in longitudinal direction of the boom structure (1) and the other guy support (18.2) is arranged for lateral inclination to the left hand side (24.2) seen in longitudinal direction of the boom structure (1).
34. The guying device according to claim 33,
    characterized in that for lateral inclination the guy supports (18.1, 18.2) are respectively connected to a cylinder-piston unit (20.1, 20.2).
35. The guying device according to claim 33 or 34,
    characterized in that the frame (15) comprises a lag-hinge (24.1, 24.2), such that the two guy supports (18.1, 18.2) can be folded to the boom structure (1) for the transport of the telescopic crane.
36. The guying device according to claim 35,
    characterized in that the frame (15) is provided with at least a mounting unit for a cylinder-piston unit (20.1, 20.2) for erecting the frame (15) together with the two guy supports (18.1, 18.2) pivotally mounted thereon.
37. The guying device according to any of claims 33-36,
    characterized in that each guy support (18.1, 18.2) is provided with a winch (27.1, 27.2), which serves as tensioning device for the tension means (6, 7; 29.1, 29.2; 32.1, 32.2) extending substantially in a longitudinal direction of the boom structure (1).
38. The guying device according to claim 37,
    characterized in that each guy support (18.1, 18.2) is constructed to abut in the utmost lateral inclination angle at a foot side thereof to the boom structure (1).
39. The guying device according to any of claims 33-38,
    characterized in that each guy support (18.1, 18.2) comprises two poles (21.1, 21.2, 22.1, 22.2) which are connected by means of cross-struts (23.1, 23.2).
40. The guying device according to claim 39,
    characterized in that the respective inner pole (21.2, 21.2) of a guy support (18.1, 18.2) is provided with a joint (24.1, 24.2) at a foot side end thereof which allows the lateral inclination to a side.
41. The guying device according to claims 37 and 39,
    characterized in that the winch (27.1, 27.2) is provided between the poles (21.1, 21.2, 22.1, 22.2) in a lower area of each guy support (18.1, 18.2).
42. The guying device according to any of claims 33-41,
    characterized in that the frame (15) is attachable to a boom base (13) of a main boom of a telescopic crane by means of mounting links (16, 16').

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