Vehicle crane system having an attachment part transporting unit for a bracing device, in particular a lateral superlift, of a vehicle crane

Abstract

A vehicle crane system includes a vehicle crane with an attachment part, in particular a bracing device, which can be mounted on and removed from the telescopic jib of the vehicle crane, and to an attachment part transporting unit for transporting an attachment part of a telescopic jib of the vehicle crane. A mobile transporting device is provided for transporting the attachment part and has at least one loading arm, the free supporting end of which can be coupled to the attachment part carried or to be carried on the transporting device. The loading arm is arranged movably on the transporting device such that the attachment part can be moved between the transporting device and the telescopic jib. Furthermore, the transporting device has a tilting device which is designed for raising and lowering one side of the attachment part carried or to be carried on the transporting device.

Claims

1. A vehicle crane system comprising: a vehicle crane having a telescoping jib and an attachment part configured as a bracing device that can be selectively mounted on and removed from the telescoping jib; an attachment part-transport unit configured to transport the attachment part, wherein the attachment part-transport unit comprises a mobile transport apparatus configured to transport the attachment part and has at least one loading arm, wherein the at least one loading arm has a free load-bearing end that is able to be coupled to the attachment part that is received or is to be received onto the transport apparatus, and wherein the loading arm is arranged so as to be movable on the transport apparatus such that the attachment part can be transferred between the transport apparatus and the telescoping jib; wherein the transport apparatus has a tilting device that is configured to raise and lower, only on one side, the attachment part that is received or is to be received on the transport apparatus; wherein the attachment part has a first end section and has a second end section opposite the first end section, and wherein the tilting device comprises at least one support assembly and a tilting drive configured as a linear drive that is configured for coupling to the first end section of the attachment part, wherein the support assembly and the tilting drive are configured to raise or lower the second end section of the attachment part with the first end section coupled to the linear drive and the attachment part supported at the support assembly resulting in a pivoting movement of the attachment part about the support assembly.

2. The vehicle crane system as claimed in claim 1, wherein the at least one loading arm is pivotably arranged on the transport apparatus such that the attachment part to be loaded or unloaded can move on a path having a movement component in a vertical direction and a horizontal direction.

3. The vehicle crane system as claimed in claim 2, wherein the telescoping jib includes a basic box, and wherein the attachment part when supported on the basic box and coupled to the tilting drive of the tilting device can be caused to perform by a change in length of the tilting drive either (a) a combined translational and limited rotational first setting-up movement relative to the transport apparatus so as to move away from the transport apparatus and towards the vehicle crane, or (b) a combined translational and limited rotational second setting-down movement relative to the transport apparatus so as to move towards the transport apparatus and away from the vehicle crane.

4. The vehicle crane system as claimed in claim 2, wherein the tilting drive includes a first end and is arranged to be pivotable on the transport apparatus via the first end, and wherein the tilting device has a storage device on which the tilting drive can be placed in a position raised from a horizontal.

5. The vehicle crane system as claimed in claim 1, wherein the attachment part comprises sections and is configured to be placed at least in sections on the telescoping jib of the vehicle crane, and wherein when the attachment part is coupled to the free load-bearing end of the at least one loading arm the attachment part can be caused to perform by a movement and/or a change in length of the loading arm either (a) a combined translational and limited rotational first setting-down movement relative to the telescoping jib so as to move towards the transport apparatus and away from the vehicle crane, or (b) a combined translational and limited rotational second setting-up movement relative to the telescoping jib so as to move away from the transport apparatus and towards the vehicle crane.

6. The vehicle crane system as claimed in claim 1, wherein the bracing device comprises a sideways superlift.

7. The vehicle crane system as claimed in claim 1, wherein the at least one loading arm can be actively pivoted.

8. The vehicle crane system as claimed in claim 1, wherein the at least one loading arm comprises two mutually spaced apart loading arms, and wherein movements of the two loading arms can be performed synchronously with respect to one another and/or independently of one another.

9. The vehicle crane system as claimed in claim 1, wherein the transport apparatus has a loading surface, and wherein the at least one loading arm can be pivoted via a rotational spindle disposed below the loading surface.

10. The vehicle crane system as claimed in claim 1, further comprising a pivot drive arranged between the at least one loading arm and the transport apparatus, wherein the pivot drive is configured as a linear drive whose length can be changed for performing a pivoting movement of the loading arm.

11. The vehicle crane system as claimed in claim 1, wherein the at least one loading arm is divided into a lower arm section and an upper arm section, and wherein the two arm sections are connected together and can be folded relative to each other via a joint.

12. A method for transferring an attachment part in the form of a bracing device from a transport apparatus of an attachment part-transport unit of a vehicle crane system (1) onto a telescoping jib of a vehicle crane of the vehicle crane system, wherein the transport apparatus further comprises a tilting device and two length-adjustable loading arms, wherein the loading arms are arranged so as to be movable on the transport apparatus and have free load-bearing ends that are able to be coupled to the attachment part, and wherein the tilting device is configured to raise the attachment part from the transport apparatus; said method comprising: providing the attachment part-transport unit having the received bracing device in the region of the vehicle crane; arranging the transport apparatus and telescoping jib relative to each other such that a longitudinal direction of the bracing device is oriented with respect to a longitudinal direction of the telescoping jib; coupling a tilting drive of the tilting device arranged on a loading surface of the transport apparatus to a first end section of the bracing device; actuating the tilting drive so as to shorten the tilting drive such that the bracing device supported at least in regions on a support assembly of the tilting device is tilted about the support assembly until a second end section of the bracing device opposite the first end section is raised with respect to the loading surface of the transport apparatus; bringing the vehicle crane closer to the transport apparatus such that the telescoping jib is arranged at least in sections beneath the second end section of the bracing device; actuating the tilting drive so as to lengthen the tilting drive such that the bracing device is tilted back about the support assembly and the second end section thereof is lowered in the direction of a head section of the telescoping jib until the bracing device is supported on at least one support roller arranged on the telescoping jib; actuating the tilting drive so as to further lengthen the tilting drive via a first setting-up movement such that the bracing device is lifted out of the support assembly and the bracing device is placed at least in sections on the telescoping jib, wherein the first setting-up movement occurs in a sliding and/or rolling manner about the support roller of the telescoping jib and is a combined translational and limited rotational movement; orienting the two length-adjustable loading arms arranged on the transport apparatus by actuating at least one pivot drive pivoting the loading arms and the length adjustability thereof until the free load-bearing ends thereof are coupled in each case to a coupling point of the bracing device, wherein the coupling point is located in the region of the first end section; decoupling the tilting drive of the tilting device from the bracing device; pivoting and/or lengthening the two loading arms until the bracing device supported via its second end section on the telescoping jib in a sliding and/or rolling manner is raised from the support roller of the telescoping jib; actuating, at the same time or following the pivoting and/or lengthening of the two loading arms, a joint drive arranged between an upper arm section and a lower arm section of each loading arm, where the upper arm section and lower arm section are connected together in an articulated manner, such that the upper arm section is folded down against the lower arm section of the respective loading arm; actuating, in a parallel or mutually separate manner, the pivot drive and the joint drive and a length-adjustability of the loading arms such that a second setting-up movement comprising a combined translational and limited rotational movement is performed until the bracing device is placed completely on the telescoping jib; actuating a luffing cylinder of the vehicle crane such that the telescoping jib is raised from the transport apparatus until the coupling points of the bracing device are decoupled from the free load-bearing ends of the two loading arms; and actuating, in a parallel or mutually separate manner, the pivot drive and the joint drive until the two loading arms are pivoted back in the direction of the loading surface of the transport apparatus.

13. The method as claimed in claim 12, wherein during or at the end of the first setting-up movement, the bracing device is supported on the support roller of the telescoping jib via at least one projection arranged thereon.

14. The method as claimed in claim 12, further comprising actuating the tilting drive of the tilting device after it is decoupled from the bracing device in such a manner that said tilting drive is shortened.

15. The method as claimed in claim 12, wherein the bracing device when placed completely on the telescoping jib is connected to the telescoping jib via at least one connector.

16. A method for transferring an attachment part in the form of a bracing device from a basic box of a telescoping jib of a vehicle crane onto a transport apparatus of an attachment part-transport unit of a vehicle crane system, wherein the transport apparatus further comprises a tilting device and two length-adjustable loading arms, wherein the loading arms are arranged so as to be movable on the transport apparatus and have free load-bearing ends that are able to be coupled to the attachment part, and wherein the tilting device is configured to lower the attachment part from the transport apparatus; said method comprising: providing the attachment part-transport unit in the region of the vehicle crane comprising the telescoping jib with the bracing device located thereon; actuating, as required, a luffing cylinder of the vehicle crane such that the telescoping jib is raised; arranging the transport apparatus below the telescoping jib and orienting a longitudinal direction of the transport apparatus with respect to a longitudinal direction of the telescoping jib of the vehicle crane and/or a longitudinal direction of the bracing device; orienting the two length-adjustable loading arms arranged on the transport apparatus by actuating at least one pivot drive pivoting the loading arms and a joint drive arranged between two arm sections of each loading arm, where the two arm sections of each loading arm are connected to each other in an articulated manner, and the length adjustability thereof in such a manner until the free load-bearing ends thereof are arranged in each case below a coupling point of the bracing device, wherein the coupling point is located in the region of a first end section of the bracing device; actuating the luffing cylinder of the vehicle crane such that the telescoping jib is lowered towards a loading surface of the transport apparatus until coupling points arranged on the bracing device are coupled to the free load-bearing ends of the loading arms; actuating the pivot drive and, in a parallel or mutually separate manner, actuating the joint drive to lengthen the loading arms such that a first setting-down movement is performed that comprises a combined translational and limited rotational movement while the bracing device is supported on the telescopic jib in a sliding and/or rolling manner via a second end section of the bracing device until the first end section of the bracing device that is opposite from the second end and is facing the transport apparatus is raised from the telescoping jib; actuating the pivot drive and/or, in a parallel or mutually separate manner, shortening the two loading arms in such a manner until the bracing device that is supported on the telescoping jib in a sliding and/or rolling manner via its second end section is placed with its first end section at least in part protruding over a head section of the telescoping jib on the telescoping jib (3); actuating the pivot drive and/or, in a parallel or mutually separate manner, shortening the two loading arms such that their free load-bearing ends are decoupled from the coupling points of the bracing device and are lowered in the direction of the loading surface of the transport apparatus; coupling a tilting drive of the tilting device arranged on the loading surface of the transport apparatus to the first end section of the bracing device; actuating the tilting drive so as to shorten the tilting drive such that the bracing device is tilted via a second setting-down movement that is a combined translational and limited rotational movement and is effected about at least one support roller arranged on the telescoping jib until the second end section of the bracing device is raised from the telescoping jib and the first end section of the bracing device that is supported on the support roller in a sliding and/or rolling manner is supported at least in regions on a support assembly of the tilting device; actuating the tilting drive so as to further shorten the tilting drive such that the bracing device is tilted about the support assembly until the bracing device is completely raised from the telescoping jib; moving the vehicle crane away from the attachment part-transport unit until the telescoping jib is moved out of a region located between the tilted bracing device and the loading surface of the transport apparatus; actuating the tilting drive such that the bracing device is tilted back about the support assembly and is lowered in the direction of the loading surface of the transport apparatus until the second end section of the bracing device is supported at least in part on the loading surface of the transport apparatus; and decoupling the tilting drive of the tilting device from the bracing device.

17. The method as claimed in claim 16, wherein during or at the end of the second setting-down movement, the bracing device is supported on the support roller of the telescoping jib via at least one projection arranged thereon.

18. The method as claimed in claim 16, the tilting drive of the tilting device is lengthened prior to being coupled to the first end section of the bracing device and/or is shortened after being decoupled from the bracing device by an actuation of the tilting drive.

19. The method as claimed in claim 16, wherein a connector connecting the bracing device to the telescoping jib is released prior to raising the bracing device from the telescoping jib.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a vehicle crane system in accordance with the invention in a side view;

(2) FIG. 2 shows a part of the vehicle crane system 1 of FIG. 1 in the form of an attachment part-transport unit;

(3) FIG. 3 shows the attachment part-transport unit of FIG. 2 in a first state;

(4) FIG. 4 shows the attachment part-transport unit of FIG. 3 in a changed state;

(5) FIG. 5 shows the vehicle crane system of FIG. 1 in a changed state;

(6) FIG. 6 shows the attachment part-transport unit shown in FIG. 5 together with a part of a vehicle crane of FIGS. 1 and 5 in a changed state;

(7) FIG. 7 shows the attachment part-transport unit together with the vehicle crane part of FIG. 6 in a changed state;

(8) FIG. 8 shows the attachment part-transport unit together with the vehicle crane part of FIG. 7 in a changed state;

(9) FIG. 9 shows the attachment part-transport unit together with the vehicle crane part of FIG. 8 in a changed state;

(10) FIG. 10 shows the attachment part-transport unit together with the vehicle crane part of FIG. 9 in a changed state;

(11) FIG. 11 shows the attachment part-transport unit together with the vehicle crane part of FIG. 10 in a changed state;

(12) FIG. 12 shows the attachment part-transport unit together with the vehicle crane part of FIG. 11 in a changed state;

(13) FIG. 13 shows the attachment part-transport unit together with the vehicle crane part of FIG. 12 in a changed state;

(14) FIG. 14 shows the attachment part-transport unit together with the vehicle crane part of FIG. 13 in a changed state;

(15) FIG. 15 shows the attachment part-transport unit together with the vehicle crane part of FIG. 14 in a changed state;

(16) FIG. 16 shows the attachment part-transport unit together with the vehicle crane part of FIG. 15 in a changed state; and

(17) FIG. 17 shows the vehicle crane system of FIGS. 1 and 5 in a changed state.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(18) FIG. 1 shows the structure of a vehicle crane system 1 in accordance with the invention which is parked on a ground U and which comprises a vehicle crane 2 having a telescoping jib 3 extending in parallel with a horizontal direction X and an attachment part-transport system 4 in accordance with the invention. Typically, the telescoping jib 3 is formed from a basic box 3c and telescoping sections guided therein in such a manner so as to be hydraulically length-adjustable and lockable. The head section 3c of the telescoping jib 3 can be raised and lowered in a manner not illustrated in more detail here via a luffing cylinder 3b.

(19) FIG. 2 shows the attachment part-transport system 4, in accordance with the invention, of FIG. 1 illustrated in isolation from the vehicle crane 2. In this view, it becomes clear that the attachment part-transport system 4 has an attachment part-transport unit 5 with a mobile transport apparatus 6 which likewise extends in parallel with the horizontal direction X. The transport apparatus 6 is used to receive an attachment part 7—which in FIG. 2 is already placed on the loading surface 6a of the transport apparatus facing away from the ground U. The dimensions of the loading surface 6a in parallel with the horizontal direction X and also in parallel with a transverse direction Y extending perpendicular to the plane of the page offer sufficient space on which the attachment part 7 can be supported. In the present case, the attachment part 7 is a bracing device, in particular a sideways superlift, which is provided for attachment to a basic box 3a of the telescoping jib 3. The bracing device can have bracing arms which are arranged behind in each other in the transverse direction Y and are connected to each other in a pivotable manner via a connecting element, which is not shown in more detail and is located in the region of a second end section 7b of the bracing device 6, in such a manner that the bracing arms can be oriented in a V-shaped manner with respect to each other as required, forming an angle. The attachment part 7 will thus be referred to as bracing device 7 hereinafter.

(20) The transport apparatus 6 can be e.g. a semi-trailer—as shown in the present case—an attached trailer, a low loader or a trailer, to name just some of the possible embodiments.

(21) As can be seen, the transport apparatus 6 is formed as a semi-trailer. Its mobility is determined by the coupling to a towing vehicle 8 of the attachment part-transport system 4 which, in the form of an articulated truck, is coupled to the transport apparatus 6. The towing vehicle 8 has a vehicle cabin 8a, from which the combination of the attachment part-transport system 4 consisting of the towing vehicle 8 and attachment part-transport unit 5 can be controlled in a typical manner in particular in relation to the transport of the bracing device 7.

(22) A tilting device 9 is provided on the transport apparatus 6 and is arranged on the loading surface 6a of the transport apparatus 6 approximately in the centre in relation to the transverse direction Y. The tilting device 9 is configured to raise and lower, on one side, the bracing device 7 already received on the loading surface 6a of the transport apparatus 6 in FIG. 2. For this purpose, the tilting device 9 has a tilting drive which is configured as a linear drive in the embodiment shown here. The tilting drive 10 is arranged on the loading surface 6a of the transport apparatus 6 in a pivotable manner via its first end, wherein a storage device 10a of the tilting device 9 is used to keep the tilting drive 10, which can be placed thereon in its lowermost pivoting position, in a position raised from a horizontal or horizontal direction X. Furthermore, the tilting device 9 has a support assembly 11 which is arranged on the loading surface 6a and has a first protrusion 11a and a second protrusion 11b. The two protrusions 11a, 11 b are spaced apart from each other in parallel with the horizontal direction X such that they include or form a depression 11c therebetween. On a first end section 7a, facing the tilting drive 10, and on a second end section 7b, facing away from the tilting drive 10, of the bracing device 7, this has a lateral element in the form of two limbs 7c, 7d which are spaced apart from each other in relation to the transverse direction Y and extend perpendicularly in parallel with a vertical direction Z. The foot points of the limbs 7c arranged on the first end section 7a of the bracing device 7 lie within the depression 11c and so the bracing device 7 can be tilted by horizontally supporting the two limbs 7c on the second protrusion 11b via the foot points thereof.

(23) In accordance with the invention, the attachment part-transport unit 5 additionally has a loading assembly 12 which is arranged in the region of the end of the transport apparatus 6 opposite the towing vehicle 8. In this case, the loading assembly 10 has two loading arms 13, of which, with reference to the view of FIG. 2, only the loading arm 13 positioned in the foreground can be seen, whilst the rear loading arm 13 which extends in this case in parallel therewith and is perpendicular to the plane of the page in relation to the transverse direction Y is concealed by the loading arm 13 positioned in the foreground. Both loading arms 13 are articulated to the transport apparatus 6 in a pivotable manner via a common or in each case a dedicated rotational spindle 14 below the loading surface 6a. The loading assembly 12 is used in combination with the tilting device 9 to transfer the bracing device 7. For this purpose, the two loading arms 13 can be pivoted by means of an active rotation about the rotational spindle(s) 14, which rotation is possible in the same or opposite directions.

(24) The free load-bearing ends 15 of each loading arm 13 are provided for at least indirect coupling, over time, to the bracing device 7, in order to move these in terms of their transfer on a path with a movement component in the vertical direction y and horizontal direction X. The active rotation of the loading arms 13 is effected via two pivot drives 16, of which, on account of the view of FIG. 2, likewise only the pivot drive 16 positioned in the foreground can be seen. The two pivot drives 16 are configured as length-adjustable linear drives, which can preferably be hydraulic cylinders. It is of course likewise feasible to use electric drives. Each of these two pivot drives 16 is integrated between the transport apparatus 6 and one of the two loading arms 13. With regard to the loading arm 13 which is positioned in the foreground and is substantially identical in form to the concealed loading arm 13, it becomes clear that they are each divided into a lower arm section 13a and an upper arm section 13b. The two arm sections 13a, 13b are connected together via a joint 13c and can be folded relative to each other. For this purpose, a joint drive 13d is provided on each of the two loading arms 13 and is connected on each end side to the lower arm section 13a and also to the upper arm 13b in an articulated manner. It can be seen that the joint drive 13d is configured as a length-adjustable linear drive, which can preferably be in each case a hydraulic cylinder. It is of course likewise feasible to use electric drives.

(25) Each upper arm section 13b of the two loading arms 13 has a coupling region 13e which in each case is arranged on a side of the associated loading arm 13 facing away from the joint drives 13d. In contrast, the transport apparatus 6 has two bearings 6b which are arranged below its loading surface 6a and are each located substantially in the plane of one of the two pivot drives 16. The two pivot drives 16 are integrated between the transport apparatus 6 and the respectively associated loading arm 13 such that they are connected to the coupling region 13e of a loading arm 13 in a force-transferring manner via a first end, whereas the second ends thereof opposite the first end are each coupled to one of the bearings 6b. In this arrangement, the free load-bearing ends 15 of each loading arm 13 are bent towards a side facing away from the associated linear drive 16.

(26) FIGS. 3 to 17, described in more detail hereinafter, show successive measures to transfer the bracing device 7 between the transport apparatus 6 of the attachment part-transport unit 5 and the telescoping jib 3 of the vehicle crane 2:

(27) FIG. 3 illustrates the attachment part-transport system 4, provided in the region of the vehicle crane 2 not shown here for reasons of clarity, consisting of the towing vehicle 8 and attachment part-transport unit 5 having the bracing device 7 received on the transport apparatus 6 thereof. In a manner not shown in more detail here, the transport apparatus 6 and the telescoping jib 3 of the vehicle crane 2 are arranged relative to each other such that the longitudinal direction of the bracing device is oriented towards the longitudinal direction of the telescoping jib 3. In order to be able to raise the second end section 7b of the bracing device 7 which in this case is still completely placed on the loading surface 6a of the transport apparatus 6, a second (free) end 10b of the tilting drive 10 was suitably coupled to the first end section 7a of the bracing device 7. For this purpose, the tilting drive 10 was raised from its position placed on the support device 10a by means of a manual raising movement A1, wherein by way of a linear movement M1 lengthening the tilting drive 10 the second end 10b thereof was displaced towards a connecting region 7e of the first end section 7a of the bracing device 7 and was connected thereto; e.g. by means of a bolt.

(28) FIG. 4 shows the raised state of the second end section 7b of the bracing device 7. For this purpose, the tilting drive 10 coupled to the bracing device 7 was actuated again, wherein by way of a linear movement M1 shortening the tilting drive 10 the first end section 7a of the bracing device 7 was pulled up on the tilting drive 10. By way of the thereby activated horizontal support of the bracing device 7 via the foot point of the limbs 7c thereof at the second protrusion 11b of the support assembly 11, the bracing device 7 was tilted about the support assembly 11 via a tilting movement P such that the second end section 7b of the bracing device 7 is now raised from the loading surface 6a of the transport apparatus 6.

(29) FIG. 5 shows an overview of the vehicle crane system 1, wherein the bracing device 7 is shown with its second end section 7b still in the raised state. In the next step, the vehicle crane 2 is now brought closer to the transport apparatus 6 of the attachment part-transport system 4 by means of a travelling movement V. Of course, the travelling movement V can also occur in the opposite direction, whereby the attachment part-transport system 4 can also be brought closer to the vehicle crane 2.

(30) FIG. 6 shows the state, required for the next steps, in which the vehicle crane 2—which in this case can be seen with only a section of its telescoping jib 3—has been brought closer to the transport apparatus 6 of the attachment part-transport system 4. The preceding travelling movement V of the vehicle crane 2 occurred only until the telescoping jib 3 is located in sections beneath the second end section 7b of the bracing device 7.

(31) FIG. 7 illustrates the subsequent lowering of the second end section 7b of the bracing device 7 in the direction of the telescoping jib 3. For this purpose, the tilting drive 10 was again actuated, whereupon the tilting movement P of the bracing device 7 resulting from the linear movement M1 lengthening the tilting drive 10 occurred about the support assembly 11. As a result, the second end section 7b of the bracing device 7 was lowered in the direction of the head section 3c of the telescoping jib 3 until the bracing device 7 was supported on a support roller 3d arranged on the free end of the basic box 3a.

(32) FIG. 8 shows the placement, at least in sections, of the bracing apparatus 7 on the basic box 3a of the telescoping jib 3. This state was reached in that, by way of a linear movement M1 further lengthening the tilting drive 10, the bracing device 7 was initially lifted out of the support assembly 11. Owing to the forcibly set kinematics, the further lengthening of the tilting drive 10 produced a first setting-up movement AUF1 which occurs in a sliding and/or rolling manner about the support roller 3d of the telescoping jib 3 and is a combined translational and limited rotational movement. In order to initiate the lowering of the second end section 7b and in order to limit the extent to which the bracing device 7 is located on the basic box 3a of the telescoping jib 3, the bracing device 7 comprises at least one projection 7g, the support roller 3d being brought closer to the projection during the first setting-up movement AUF1 and ultimately being supported thereon. In this manner, the displacement of the bracing device 7 in parallel with the horizontal direction X is limited and the tilting movement P is already structurally initiated.

(33) FIG. 9 shows the result of a subsequent pivoting movement S of the two loading arms 13 about the rotational spindle(s) 14 thereof in combination with the change in length thereof by a telescoping movement T, whereby the free load-bearing ends 15 thereof are now coupled in each case to a coupling point 7f located in the region of the first end section 7a of the bracing device 7. As can be seen for example in FIG. 8, the coupling points 7f have an almost semi-circular depression in which the free load-bearing ends 15 of the loading arms 13 can engage in an articulated manner such that an almost rotating relative movement between the free load-bearing ends 15 and the bracing device 7 is permitted even in the coupling state. The pivoting movement S of the two loading arms 13 is based on a linear movement M2 lengthening the two pivot drives 16.

(34) FIG. 10 shows that in a next step the tilting drive 10, which is no longer further required, was decoupled from the connecting region 7e of the first end section 7a of the bracing device 7 and was placed on its storage device 10a. Previously or in parallel therewith, the tilting drive 10 was shortened by means of a linear movement M1.

(35) FIG. 11 illustrates the subsequent raising of the bracing device 7 from the support roller 3d of the telescoping jib 3, in that the loading arms 13 were caused to perform a continuing pivoting movement S on the basis of a linear movement M2 further lengthening the pivot drives 16 thereof. This movement can be supported by a continuing telescoping movement T lengthening the loading arms 13. Owing to the forcibly set kinematics, the bracing device 7 is supported on the one hand on the free load-bearing ends 15 of the loading arms 13 and on the other hand via its second end section 7b on the telescoping jib 3, wherein the latter occurs in a sliding and/or rolling manner on the basic box 3a thereof. For this purpose, the bracing device 7 comprises at least one rolling and/or sliding body 7h which is located on its second end section 7b and is not shown in more detail here and via which the second end section 7b of the bracing device 7 can be displaced in parallel with the longitudinal direction of the telescoping jib 3 on its basic box 3a. In the case of designing the bracing device 7 as a superlift, the rolling and/or sliding body 7h can then be arranged e.g. on its connecting element located between its bracing arms.

(36) FIG. 12 shows that as the two loading arms 13 perform an increasing pivoting movement S and/or telescoping movement T, the second end section 7b of the bracing device 7 is displaced further away from the head section 3c of the telescoping jib 3 on the basic box 3a thereof.

(37) FIG. 13 shows a further step in which the joint drive 13d arranged between the two arm sections 13a, 13b, connected together in an articulated manner, of each loading arm 13 is actuated such that the two arm sections 13a, 13b are pivoted towards each other via a folding movement K owing to a linear movement M3 shortening the joint drive. In other words, the respective upper arm section 13b is folded in a limited manner with respect to the associated lower arm section 13a.

(38) FIG. 14 illustrates a second setting-up movement AUF2 in which owing to a parallel or mutually separate actuation of the pivot drives 13d and joint drive 16 and the length-adjustability of the loading arms 13 a combination translational and limited rotational sequence of pivoting movement S, folding movement K and the telescoping movement T shortening the two loading arms 13 is performed until the bracing device 7 is lowered as far as possible in the direction of the basic box 3a of the telescoping jib 3.

(39) FIG. 15 shows the state of the bracing device 7 in which it is placed completely on the basic box 3a of the telescoping jib 3. For this purpose, the luffing cylinder 3b of the vehicle crane 2 is lengthened by a linear movement M4, whereby the telescoping jib 3 was raised from the ground U from its orientation—previously still extending in parallel with the horizontal direction X—via a corresponding luffing movement W such that the basic box 3a thereof was now displaced completely below the bracing device 7.

(40) FIG. 16 shows that the coupling points 7f of the bracing device 7—owing to the luffing movement W of the telescoping jib 3 which is already described in FIG. 15 or a continuing luffing movement—were raised from the free load-bearing ends 15 of the two loading arms 13 and in this respect were decoupled therefrom.

(41) FIG. 17 shows the situation shortly before the movement of the vehicle crane 2 away from the attachment part-transport system 4 or vice-versa by means of a travelling movement V. At this point in time, the bracing device 7 is now completely transferred and was connected to the basic box 3a of the telescoping jib 3 in a manner not illustrated in more detail, e.g. by bolting. Previously or subsequent thereto, the pivot drives 16 and the joint drives 13d are actuated in such a manner until the two loading arms 13 are pivoted back in the direction of the loading surface 6a of the transport apparatus 6 via a corresponding tilting movement K and pivoting movement S.

(42) The bracing device 7 is transferred from a telescoping jib 3 of the vehicle crane 2 back to the transport apparatus 6 of the attachment part-transport unit 4 in the reverse manner, as already shown in the rest of the description and which can be followed in a logical manner using FIGS. 1 to 17 explained herein. For this purpose, inter alia movements in terms of a first setting-down movement AB1 and a second setting-down movement AB2 are performed. Of these, the first setting-down movement AB1 corresponds to a movement performed in the opposite direction to the second setting-up movement AUF2, whilst the second setting-down movement AB2 is a movement opposite to the first setting-up movement AUF1.