EP3543197A1 - Device for applying a ladder section of a crane operator lift to a crane mast - Google Patents

Abstract

The invention relates to a device (1) for attaching a ladder part (2) of a crane operator lift (3) to a crane mast (4) with a holding device (5) by means of which the ladder part (2) can be connected to the crane mast (4) is, wherein retaining means (5) on the crane mast (4) is arranged and formed so that it is pivoted from a connected to the ladder part (2) working position in one of the ladder part (2) dissolved rest position and vice versa, wherein the holding means (5 ) is in its rest position within the outer contour (6) of the crane mast (4).

Description

The invention relates to a device for attaching a ladder part of a crane operator lift on a crane mast according to the preamble of claim 1.

From practice it is known to convey a crane operator by means of, for example, a rack elevator with aluminum ladder parts in a short time to his workplace at the top of the crane to a crane cab. It is advantageous that the crane operator no longer needs to climb the complete path above the ladder mounted in the crane mast. It is also known to attach such a crane operator lift by suitable holding means on the outside of the crane mast. Such holding devices can be grown only after the erection of the crane.

Usually, such holding devices are attached to the corner posts of the crane mast. Such mounted holding devices are there from the cab of the crane operator lift from bad or not to reach. For this reason, the holding devices are usually mounted inside of the crane. Such assembly is particularly time-consuming and cumbersome, especially when the holding devices are not on the level of a pedestal in the crane mast or if there is no suitable access from the inside. In such cases, the fitter must climb and secure himself against falling.

Since the costs for the construction of a crane operator lift include its safe erection and the time required for this, the aim is to have the shortest possible set-up time while at the same time ensuring the safest possible assembly.

The invention has for its object to provide a device of the type mentioned, by means of the secure mounting of a ladder part of a crane operator lift on the crane mast is simplified.

This object is achieved by a device having the features of claim 1. Advantageous embodiments of the invention are described in the dependent claims.

The holding device, by means of which the ladder part is connectable to the crane mast, is arranged and configured on the crane mast in such a way that it can be swiveled from a work position connected to the ladder part into a rest position released from the ladder part and vice versa, the holding device being in its inoperative position within the rest position Outside contour of the crane mast is located. This makes it possible to shorten the construction time for the construction of a crane operator lift significantly and on the other hand to make the installation extremely safe for the fitter as the assembly can take place as possible at the height of the crossing. The main advantage and the basic idea of the invention is that the device is only once to be mounted on the crane mast, then can remain there and no longer has to be dismantled when the crane dismantled and the individual mast segments (ab) are transported. As a result, the device for the next installation is already in the crane (pre) mounted and only to connect to the ladder part and above with the crane operator lift. To transfer the holding device from its working position to its rest position, this is only to be detached from the ladder part and to pivot into the interior of the crane mast, where it is protected against damage inside the outer contour of the crane mast. In this respect, the device according to the invention can be permanently mounted on the crane mast. The holding devices are simply disassembled from the crane Ladder part solved and inwardly, that is drawn into the inner cross section of the crane mast and then pivoted so that the device according to the invention is disposed completely within the outer contour of the crane mast. Thus, the device according to the invention can not be damaged by a stacked storage of crane mast segments or by a storage of the crane mast segment on a surface of a truck.

According to one embodiment of the invention, the holding device has a central receptacle attached to the crane mast and a pivoting unit pivotably connected to the latter, wherein the central receptacle is preferably fastened to a connecting strut of the crane mast, preferably can be clamped. Such a connecting strut connects the corner posts of the crane mast with each other. According to this embodiment, the device according to the invention is therefore no longer mounted directly on the corner posts but on a connecting this strut. As a result, the device according to the invention is very variable and securely attachable, so that the device can be mounted in a relatively short time. In this respect, it is possible to mount the holding device on both diagonal and horizontal connecting struts of the crane mast. Also by this development, the assembly of the device can be simplified on the crane mast.

According to another embodiment of the invention, the central receptacle is slidably mounted on the connecting strut in the longitudinal direction. Such displaceability is particularly advantageous because, depending on the design of the crane mast diagonal struts of the mast allow a good passage from the outside crane operator lift into the crane in only a few places. Compared to previous devices, the cost of moving the device is now significantly reduced. In this respect, the device according to the invention is flexibly adaptable with respect to its mounting on the crane mast to the position of the ladder part of the crane operator lift.

Advantageously, the pivoting unit has a rotatably connected to the central receptacle spacer and an adjustable attachable to the latter holder, which is detachably connectable to the ladder part, wherein the holder at its connectable to the ladder part end having a clamping device Revolving unit has. Thus, the pivoting unit consists of only a few parts, whereby the mounting of the device on the crane mast is further simplified. By means of the clamping device, the holder is easily tuned to the respective crane type. At best, the holder can even be used for several types. The attachment of the ladder part by means of the clamping device further simplifies the assembly, since in most cases different ladder parts can be connected to the same clamping device on the bracket with the crane mast. In this respect, the device according to the invention is very variable and safe to use. The turntable easily allows variable attachment of the bracket on the ladder part of the crane operator lift. In this respect, the turntable can be adjusted by simply pivoting to the position of the ladder part.

According to another embodiment, the spacer is L-shaped with a short leg for receiving and securing the holder and a long leg which is rotatably connected to the central receptacle is formed. As a result, the spacer is relatively simple and inexpensive to produce.

Advantageously, the dimension between the front, pointing to the rotation unit edge of the short leg of the spacer and the front, in the assembled state to the ladder facing edge of the central receptacle is greater than the dimension, which designates the dimension of the entire turntable in the longitudinal direction of the holder. As a result, the rotary unit can be moved in the direction of the central receptacle, so that the front part of the holder and thus the rotary unit no longer protrude from the crane mast and are thus arranged within the outer contour of the crane mast with the resulting, previously explained advantages.

According to yet another embodiment, the central receptacle on at least one adjustable clamping piece, by means of which the central receptacle with the connecting strut of the crane mast is connectable. Also, this at least one clamping piece may, just like the previously mentioned clamping device of the rotary unit, be designed so that it can be attached to differently shaped connecting struts. Also by means of this development, therefore, the assembly the device according to the invention safely designed and simplified and thus costs to be carried out low.

Advantageously, the pivot unit on the spacer on a clamping part for adjustable clamping of the holder. As a result, the position of the holder can vary within wide limits, so that the holder is variably adaptable to the position of the ladder part of the crane operator lift.

Fig. 1

eine perspektivische Ansicht einer Vorrichtung zum Anbringen eines Leiterteils eines Kranführeraufzugs an einem Kranmasten in der Arbeitsstellung gemäß einer ersten Ausführungsform;

Fig. 2

eine schematische teilweise Seitenansicht der Vorrichtung gemäß Fig. 1;

Fig. 3

eine perspektivische Ansicht der Vorrichtung gemäß Fig. 1;

Fig. 4

eine schematische Seitenansicht der Vorrichtung gemäß Fig. 3;

Fig. 5

eine schematische Seitenansicht der Vorrichtung gemäß Fig. 4 in der Ruhestellung; und

Fig. 6

eine schematische Seitenansicht der Vorrichtung gemäß einer zweiten Ausführungsform.

Embodiments of the subject invention are described below with reference to the drawing, all described and / or illustrated features alone or in any combination form the subject matter of the present invention, regardless of their combination in the claims or their dependency. Show it:

Fig. 1

a perspective view of an apparatus for attaching a ladder part of a crane operator lift on a crane masts in the working position according to a first embodiment;

Fig. 2

a schematic partial side view of the device according to Fig. 1 ;

Fig. 3

a perspective view of the device according to Fig. 1 ;

Fig. 4

a schematic side view of the device according to Fig. 3 ;

Fig. 5

a schematic side view of the device according to Fig. 4 at rest; and

Fig. 6

a schematic side view of the device according to a second embodiment.

In Fig. 1 is a device 1 for attaching a ladder part 2 of a dashed lines indicated crane operator 3 on a crane masts 4 shown only partially shown in the working position. The device 1 is in Fig. 1 shown in a first embodiment. Fig. 2 shows the device according to Fig. 1 in a schematic, simplified side view, in which case, for example, the in Fig. 1 Dashed lines indicated crane operator lift has been omitted for simplicity.

The device 1 has a holding device 5, by means of which the conductor part 2 with the crane mast 4 is connectable, as will be explained in more detail below. The holding device 5 is arranged and formed on the crane mast 4 such that it consists of a working position connected to the ladder part 2 (see Fig. 1 and 2 ) in a released from the ladder part 2 rest position (see Fig. 5 ) and vice versa is pivotable, wherein the holding device 5 is in its rest position within the outer contour 6 of the crane mast 4. In Fig. 1 is the outer contour 6 of the crane mast 4 only partially shown and indicated by dash-dotted lines. In this respect, the device 1 is in its in Fig. 5 shown rest position within the cross-sectional area of the crane mast. 4

The holding device 5 has a crane mast 4 attached to the central receptacle 7 with lateral corner pieces 10, 11, which are connected to one another via a in the corner pieces 10, 11 rotatably mounted pipe 12. Furthermore, the holding device 5 has a pivoting unit 13 pivotably connected to the central receptacle 7 Fig. 1 shown, the central receptacle 7 is fastened to a connecting strut 14 of the crane mast 4, preferably clamped. According to Fig. 1 the connecting strut 14 is a horizontal connecting strut. It is - but with increased design effort - also possible to attach the central receptacle 7 on a diagonal connecting strut 15.

According to the in Fig. 1 illustrated double arrow A, the central receptacle 7 is slidably mounted on the connecting strut 14 in the longitudinal direction, so that the position of the device 1 according to the invention can be easily adapted to that of the ladder part 2 of the crane operator 3.

As shown in the figures, the pivoting unit 13 has a rotatably connected to the central receptacle 7 spacer 16 and an adjustable fastened to the latter bracket 17. The holder 17 is releasably connectable to the ladder part 2 and has at its connectable to the conductor part 2 end 20 a clamping device 21 (see Fig. 1 . 3 to 6 ) having turning unit 22. According to Fig. 4 the spacer 16 is preferably pivotally connected to the tube 12 of the central receptacle 7 in the direction of the double arrow B relative to the central receptacle 7. Further, the example, tubular designed bracket 17 is slidably mounted relative to the spacer 16 in the direction of the double arrow C, as will be explained in more detail below. In addition, the rotary unit 22 is pivotable relative to the holder 17 in the direction of the double arrow D about a bearing point 23, so that the rotary unit 22 with respect to their position relative to the conductor part 2 can easily adapt to the respective position of the conductor part 2.

As shown in the figures, the spacer 16 is L-shaped with a short leg 24 and a long leg 25. The short leg 24 serves to receive and fix the preferably tubular holder 17, the long leg 25 is rotatable with the central receptacle 7, in particular with its rotatable tube 12, fixed, but adjustably connected in the axial direction.

Fig. 4 illustrates that the dimension X between the front, pointing to the rotation unit 22 edge 26 of the short leg 24 of the spacer 16 and the front, in the assembled state to the ladder part 2 facing edge 27 of the central receptacle 7 according to a preferred embodiment is greater than the dimension Y. , which designates the dimension of the rotary unit 22 including the clamping device 21 in the longitudinal direction of the holder 17. This makes it possible, the holder 17 in Fig. 4 to the left to move so far that the rotary unit 22 including its clamping device 21 is located above the central receptacle 7 and does not project beyond the front edge 27 of the central receptacle 7 to the right.

The central receptacle 7 has at least one adjustable clamping piece 30, by means of which the central receptacle 7 with the connecting strut 14 of the crane mast 4 is connectable. According to the Fig. 1 to 4 two clamping pieces 30 are provided on each longitudinal side of the central receptacle 7, so that each corner piece 10, 11 (see Fig. 1 ) of the central receptacle has two clamping pieces 30. In this case, the clamping pieces 30 may be formed such that the in Fig. 4 upper clamping piece in horizontal direction according to the double arrow E and the lower clamping piece in the vertical direction according to the double arrow F is adjustable. As a result, the central receptacle 7, as in Fig. 2 is indicated, easily clamped to a two-legged connecting strut 14, wherein the one, horizontal leg of the connecting strut in the in Fig. 2 upper clamping piece 30 and the other, vertical leg in the in Fig. 2 lower clamp 30 is held firmly and clamped. According to an alternative embodiment, not shown, the clamping device or the at least one clamping piece for mounting on the crane could also be plugged or screwed to prepared shots on the crane mast.

In addition, the pivoting unit 13 on the spacer 16, a clamping member 31 for adjustably clamping the tubular holder 17th

Fig. 1 and 3 illustrate that the pivot unit 13 ultimately has two spacers 16 which are non-rotatably mounted on the rotatable tube 12 of the central receptacle 7. These figures also show that the holder 17 is U-shaped with two tubular longitudinal legs 32 and one connecting them at their free ends, also tubular transverse limb 33, wherein at the two longitudinal ends of the transverse leg 33 each have a rotary unit 22 is provided with clamping device 21 , It should be noted that the tube, which can be clamped to the turntable and so variably adjusted in length, may also have a different geometry, such as a square or even rectangular cross-section. For example, the tube can also be a square tube. It can also be staked and not necessarily clamped attached. The advantage of this alternative embodiment would be that by suitable hole distances ideal distances from the crane mast to the ladder part can be easily adjusted and so the structure can also be extended. The clamping devices 21 and the in Fig. 4 lower clamping piece 30 have, for example, a U-shaped cross-section, while the in Fig. 4 upper clamping piece 30 is designed approximately L-shaped.

For attaching the device 1, the central receptacle 7 is now first attached to the connecting strut 14 of the crane mast 4, in particular by means of Clamps 30 clamped. A fine adjustment of the position of the central receptacle relative to the connecting strut 14 is possible, provided that the clamping pieces are loosened / and the entire central receptacle in the direction of the double arrow A (see Fig. 1 ) is shifted so far that the holder 17 can be clamped with their rotating units 22 via the clamping means 21 fixed to the conductor part 2. For this purpose, the holder 17 can be adjusted by means of the pivoting unit 13 in its inclination such that the rotating units 22 and the clamping devices 21 lie flat against the conductor part 2. For this purpose, the holder 17 can be moved in its longitudinal direction relative to the spacers 16 at loosened clamping members 31 in the direction of the double arrow C. If the desired position is reached, clamping devices 21 and the clamping pieces 30 and the clamping members 31 are tightened. The device 1 is then in its working position (see Fig. 1 and 2 ), in which the crane operator lift can be mounted on the ladder section and the crane operator can reach the crane operator's cab or from there to the ground by a method of the crane operator lift.

If, after completion of the work, the crane is to be dismantled and transported away, the clamping devices 21 are detached from the ladder section 2. Subsequently, the holder 17 in Fig. 4 pivoted counterclockwise in the rest position of the device, so that about the in Fig. 5 shown position is reached. In Fig. 5 For example, the clamp (s) of the central receptacle have been omitted for the sake of simplicity. For this purpose, it may previously be desired or necessary to release the clamping parts 31 of the spacers 16 and the entire holder in the 3 and 4 to move to the left, so that the rotating units 22 approach the clamping members 31. Subsequently, the clamping parts 31 are tightened again, so that the position of the holder 17 is fixed relative to the spacers 16 of the pivoting unit 13. The device according to the invention is then in its in Fig. 5 shown rest position in which it is located completely within the outer contour of the crane mast. The crane mast can then be broken down into individual segments and transported away, including the device still clamped thereto. When rebuilding the crane, the individual devices 1 according to the invention are already mounted on the individual crane mast segments, so that setting up and setting up a crane operator lift is associated with a significantly reduced expenditure of time.

In Fig. 6 is shown a schematic side view of the device 1 according to a second embodiment. Here, the central receptacle 7 has only one clamping piece 30, which is designed such that it is suitable for clamping circular spars (not shown) in the crane mast.

In this respect, the device according to the invention in its rest position, i. in their folded into the interior of the crane mast position, even during transport remain on the crane mast. In contrast, conventional systems for outboard crane operator lifts must be laboriously disassembled and reassembled prior to subsequent assembly. Once installed, the device according to the invention during reconstruction, however, only fold out and connect via the clamping devices with the ladder part. Another advantage of the device according to the invention is the ergonomic mounting. As a rule, it is possible for a person to mount the device according to the invention easily accessible from the interior of the crane mast. A cumbersome installation from the outside, which is often associated with not inconsiderable hazards, can therefore be omitted. Due to the numerous clamping connections, the holding device of the device according to the invention can be adapted to a large number of masts and positions of the ladder parts. Clamping means 21 and clamping pieces 30 can advantageously be designed as so-called format parts. If the adjustment range is insufficient, the parts can also be replaced.

The crane mast of tower cranes moves in a structure with a height of 100 m at the top depending on the load case and wind conditions, for example, up to 1 m in each direction. The device according to the invention is able to participate in these movements, ie to adapt to these movements. As a result, a long-term use of the ladder part of the crane operator lift is secured. Fig. 1 and 2 illustrate that both the pivot unit and the turntable of the bracket slightly inclined compared to the neutral position, which in the 3 and 4 shown can be positioned. In general, jumps in the cross-section of the crane mast can be compensated by this structure. Crane masts often have one in their lower area Cross section of 2 × 2 m and from a certain height of 1.6 × 1.6 m. The device constructed according to the invention can bridge larger lengths in the upper region of such crane masts, so that the ladder parts can also be perpendicular to such crane masts.

Thus, a device of the type mentioned is created by means of which simplifies the safe installation on the crane mast and thus cheaper to carry out.

Claims (10)

Device for attaching a ladder part (2) of a crane operator lift (3) to a crane mast (4),
with a holding device (5) by means of which the ladder part (2) can be connected to the crane mast (4),
characterized,
in that the holding device (5) is arranged and configured on the crane mast (4) in such a way that it can be pivoted from a work position connected to the ladder part (2) into a rest position released from the ladder part (2) and vice versa, wherein the holding device (5) in its rest position within the outer contour (6) of the crane mast (4). Apparatus according to claim 1, characterized in that the holding device (5) has a crane mast (4) fixed to the central receptacle (7) and pivotally connected to the latter pivot unit (13). Apparatus according to claim 2, characterized in that the central receptacle (7) on a connecting strut (14, 15) of the crane mast (4) attachable, preferably can be clamped. Apparatus according to claim 3, characterized in that the central receptacle on the connecting strut (14, 15) is mounted displaceably in the longitudinal direction. Device according to one of claims 2 to 4, characterized in that the pivoting unit (13) has a rotatably connected to the central receptacle (7) spacer (16) and an adjustable attachable to the latter holder (17) releasably connected to the conductor part ( 2) is connectable. Apparatus according to claim 5, characterized in that the holder (17) at its with the conductor part (2) connectable end (20) has a clamping device (21) having a rotary unit (22). Apparatus according to claim 5 or 6, characterized in that the spacer (16) is L-shaped with a short leg (24) for receiving and fixing the holder (17) and a long leg (25) which is rotatable with the central receptacle (25). 7) is connected, is formed. Device according to claims 6 and 7, characterized in that the dimension (X) between the front, to the rotation unit (22) facing edge (26) of the short leg (24) of the spacer (16) and the front, in the assembled state to Ladder part (2) facing edge (27) of the central receptacle (7) is greater than the dimension (Y), which denotes the dimension of the rotary unit (22) in the longitudinal direction of the holder (17). Device according to one of claims 2 to 8, characterized in that the central receptacle (7) has at least one adjustable clamping piece (30), by means of which the central receptacle (7) with the connecting strut (14, 15) of the crane mast (4) connectable is. Device according to one of claims 2 to 9, characterized in that the pivoting unit (13) on the spacer (16) has a clamping part (31) for adjustably clamping the holder (17).

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