DE102013218236A1 - Modular universal telescopic traverse in lightweight construction - Google Patents

Abstract

The subject of the present invention is a modular construction for truss elements. These can be variably combined in various embodiments to trusses for lifting loads. In particular, longitudinal and transverse support modules are provided, wherein the longitudinal and / or the cross member modules are extensible by telescopically arranged strokes at the ends. The free ends of the innermost strokes of the longitudinal members can be releasably connected to cross members or load-bearing elements.

Description

The subject of the present invention is a truss construction. Such trusses are beam or frame-like constructions, as they are used in the recording of large loads with significant spatial extent to distribute the attacking load capacities over the dimensions of the load.

From the prior art a variety of trusses is known. In particular, with the advent of container traffic, various truss structures have been established by means of which the containers can be detected at their outer corners in the fittings provided for this purpose. Since there were different standardized container sizes, the desire quickly arose to be able to move even different container sizes with one and the same traverse. As a result, adjustable truss constructions have been proposed, which make it possible to adapt the trusses to different container lengths. However, an adjustment in width was not necessary because the containers vary only in length.

Examples of the mentioned length adjustable constructions can be found in the US 3,627,370 in which a construction of telescoped grid frame is described. Other examples are in the WO2012 / 080567 , of the EP 0 589 095 A1 or the DE 10 2008 000 180 A1 to find. All these designs have in common that they are indeed suitable for a length adjustment of the trusses, but are rigid in width.

For loads that can vary in both length and width, simple length-adjustable spreader bars are proposed, wherein a spreader beam detects a load with a rectangular base at diagonally opposite corners and two spreader bars are arranged one above the other and usually independently. In the WO 83/00855 Such a construction is described, wherein the spreader bars are interchangeable and so different lengths can be achieved. In the US 3,206,243 Telescopic beams are proposed.

The US 4,266,904 suggests a construction that is variable in length. In addition, the containers to be lifted are detected from below, for which at the container ends and laterally arms are guided. The distance between the arms is adjustable, so that at least theoretically containers of different widths can be lifted.

In the US 4,462,627 a traverse is described in which both the truss length and the distributed over the entire length and extending in the width load bearing beams are changeable. The possibilities of change are achieved in such a way that the respective longitudinal beams or the load-bearing beams running transversely thereto are designed as box profiles in which the extension pieces are telescopically arranged. Such a construction requires a very high weight, which thus reduces the recordable payload.

It thus sets itself the task of proposing a truss construction, which has the necessary flexibility to be able to be used for different load dimensions, but it brings as little weight as possible in order to achieve the highest possible maximum payload.

The object is achieved with a traverse according to claim 1. Advantageous developments are disclosed in the dependent claims.

According to the invention the object is achieved with a traverse, which is designed in lightweight construction (preferably lattice structure). This Traverse is modular. It provides modules for a longitudinal support structure (side member) as well as for a transverse support structure (cross member). The modules can be used individually, but they can also be connected to larger truss constructions. Preferably, the modules are connected to a traverse, which has two longitudinal and two cross member.

All support structures (longitudinal and cross member) are telescopic and preferably in any position (or screened) can be locked. The longitudinal members have at their ends extracts (strokes), which can be pulled out of the longitudinal members telescopically. The change in the length of the cross member is made by one or more telescopically nested extracts (strokes) of the cross member are pulled apart from each end of the cross member. The strokes remain at one end in the construction, the other end is free and protrudes from this. The strokes of the longitudinal and transverse beams are telescoped like the tubes of a classic telescope. Preferably, the innermost stroke of longitudinal members has at its free end devices for coupling of load-bearing elements (load attachment means) and connecting elements to cross members. In the case of cross members, the innermost stroke preferably has devices for coupling load-bearing elements at its free end.

The longitudinal and transverse beams form, as mentioned, individual modules. There are basic modules as well as lifting modules for each type of carrier (longitudinal or cross member). The basic modules correspond to the longitudinal or cross member sections containing the other lifting modules. Every basic module can have two lifting modules for the first stroke, which are pulled out as needed from the base module and extend it in the direction of its longitudinal axis out of the ends. The lifting modules for the second stroke are then pulled out of the ends of the lifting modules of the first hub facing away from the basic modules in order to further extend them. Thus, each basic module has exactly two lifting modules for each stroke (first stroke, second stroke, etc.). Although in principle the number of strokes is not limited, it has proven useful in the interest of stability to provide only one or two strokes. At the end remote from the base module end of the last stroke of the side members a possibility for mounting the cross member connection is provided. These are preferably one, two or more angle elements.

At the end facing away from the base end of the last (the innermost) stroke of longitudinal or transverse support also load-receiving elements can be arranged, via which the male load can be struck in the case of use as a single traverse.

The guidance of the strokes into each other or in the basic module is preferably carried out by means of sliding guides. However, roller guides are also possible.

In a preferred first embodiment, the modules are connected to a crossmember, which has two parallel extending telescopic side members in lightweight construction and two parallel cross member in lightweight construction. The cross members are connected to the ends of the strokes of the longitudinal members. The connection is preferably carried out detachably, for example by means of screw, bolt or bolt connections.

A preferred further development of this embodiment provides for a cross-bracing between the two parallel longitudinal members, which counteracts a shear stress.

In a further preferred embodiment, only a telescoping longitudinal member is provided, wherein at the ends of the innermost strokes, the cross member, advantageously with its center, are arranged.

Yet another embodiment provides to use a single telescopic side member as Traverse. In this case, the elements for load-bearing at the end of the extracts of the longitudinal member are arranged.

In a fourth preferred embodiment, a single cross member serves as a single traverse.

Further preferably, directly juxtaposed longitudinal or transverse beams can be used as double traverses.

The lifting device preferably acts on the traverse by means of a cable or chain hoist. In the case of two parallel longitudinal members, preferably each longitudinal member is grasped by means of two cables or chains acting symmetrically to its center of gravity. The same procedure is used for a single longitudinal member. If a cross member is used as a single cross member, this is treated like a side member.

The elements for load suspension are preferably arranged in the presence of cross members at the end of their extracts. Should a longitudinal member be used as a single traverse, the elements for load bearing are preferably arranged at the end of the strokes.

In a further preferred procedure, the elements for load suspension are arranged symmetrically to the center of gravity of the traverse. this is useful when picking up a load that has only a single impact point.

Each carrier has at least one, preferably two drives for moving the lifting modules out of the basic module or back into it. These drives preferably operate on the basis of hydraulic or gear or cable mechanisms or their combinations. The power supply is preferably carried out electrically or via compressed air or oil pressure and the like from the prior art. In a particularly simple embodiment or as a breakdown variant, the lifting modules are positioned one inside the other or in the base module by means of a hand crank and then mechanically locked (screws, clamping devices, bolts, etc.).

embodiment

The following example explains the construction of a traverse according to the invention, but without limiting the scope of protection to this particular embodiment

characters

1 : Overall crossbeam structure fully retracted (1a) and fully extended (1b)

2 : Side member modules

3 : Supporting structure of a longitudinal beam base module (without torsion bracing)

4 : Supporting structure of a longitudinal beam base module (without torsion struts), side view

5 : Torsion braces on a longitudinal beam base module

6 : Interface between longitudinal and transverse beams (view from obliquely laterally and diagonally upwards)

7 : Schubkreuz

8th : Side member half extended with protective elements (expanded metal mesh)

9 : Suspension points of a longitudinal beam basic module

10 : Abstellauflagen on the side member

11 : Side member (top left) and cross member (bottom right) as single traverse

12 Crossmember (top left) and side member (bottom right) in the double crossbeam

13 : Quick-release lock for lifting the load

14 : Side member basic module with drive units (top view, bottom view)

15 : Rope drives on the side member (top view above and sectional view below)

16 : Principle "loose roll" for extension and retraction

17 : Rope cleaner on the rope drive of a longitudinal member

18 : Sliding guides on a side member (front view)

19 : Entry and exit stops for the lifting modules on a side member (sectional view)

20 : asymmetric extension state

21 : Locking mechanisms on a side member

supporting structure

1.1 Structure of the overall truss structure

The 1a and 1b show the overall crosshead structure in fully retracted (1a) and extended (1b) states. Some attachments, such as. B. the side and top covers (expanded metal mesh) 28 and 29 , are hidden here for the sake of clarity. Also in the following figures, irrelevant to the respective consideration components are hidden.

The primary structure of the traverse (overall cross-member structure) consists of two mutually parallel longitudinal members 1 and crossbeams 2 , As a result of this arrangement, the two side members are subject 1 smaller torsion and the cross member 2 smaller bending stresses, which from a structural mechanical point of view, smaller cross sections and a total of a smaller net mass of the traverse can be realized in favor of the payload.

To enable stroke-length ratios greater than two, both longitudinal and transverse beams are used 1 and 2 basically telescopic.

The basic structure of the telescopic longitudinal and transverse beams is as follows: basic modules 3 and lifting modules 4 ,

• – das Grundmodul 3
• – zwei Hubmodule 4 für den ersten Hub
• – zwei Hubmodule 4 für den zweiten Hub (mit Winkelelementen 21 zur Querträgeranbindung).

2 shows the individual modules of a longitudinal member:

• - the basic module 3
• - two lifting modules 4 for the first stroke
• - two lifting modules 4 for the second stroke (with angle elements 21 to the cross member connection).

This results in cross member four total load attachment points 13 for receiving the payload, as well as on the longitudinal member side a total of four suspension points 5 for connecting the traverse to a lifting means, such. B. crane (see. 1 ).

1.2 Construction of the basic and lifting modules

3 shows the support structure of a basic module 3 on the example of a longitudinal member 1 without additional attachments, such. B. drive components. The crossbeam base modules and all lifting modules are preferably of similar construction.

Basic and lifting modules 3 and 4 each consist of two mutually parallel web plates 16 by means of cross struts 18 and push struts 19 connected to each other.

For reasons of weight, the cross section corresponds to the transverse struts 18 a circular profile. Alternatively, the cross-sectional contour can be arbitrarily designed and the cross member as a hollow or solid profile. The triangular shaped longitudinal or transverse beam shear struts 19 are preferably made of sheet metal or plate material. Due to the triangle shape, the number of Thrust strut elements 19 and reduces the number of attachment points and optimizes the power flow.

Alternatively, the push braces 19 Also as easily cut sheets / plates in any form individually mounted.

Both cross struts 18 as well as push struts 19 can material, form-fitting or by means of screws with the respective web plates 16 get connected.

To achieve the largest possible payload net mass ratio and maintain accessibility for assembly work, are the web plates 16 the basic and lifting modules 3 and 4 preferably designed in half-timbered construction.

As in the upper edge fibers of the web plates 16 Whenever the highest tensile bending stresses are present, welded joints in these areas should always be avoided. However, it is preferred for the generation of the truss structure 17 Jet cutting (water or laser cutting) or milling recommended.

To optimize the power flow, there are the cross struts 18 preferably in each case at the vertices of the triangular-shaped truss recesses 17 , see. 4 (marked in bold in the right half of the figure).

It is recommended to the already mentioned cross and push bracing 18 and 19 additionally torsion braces 20 to integrate into the supporting structure. They increase the torsional rigidity of the longitudinal and transverse beams 1 and 2 , This is useful, among other things - in relation to the vertical cross-section center line of the longitudinal or cross member 1 and 2 - Off-center loads.

The torsion braces 20 (see. 5 ) may consist of steel sheets, which are at the top and bottom of the basic modules 3 aligned or staggered to each other on the web plates 16 be attached, for example by welding.

Alternatively, the torsion braces 20 also detachably mounted and constructed differently, for example. As a rectangular frame racks, which are the basic modules 3 frame completely.

In addition, the attachment of the torsion braces is recommended 20 also on the lifting modules 4 ,

1.3 Connection of the individual carriers

The basic module 3 of each cross member 2 is by means of angle elements 21 each with the two outermost lifting modules facing it 4 the side member 1 connected. As shown ( 6 ), are the angular elements 21 or the console-like connections by additional ribs 22 stiffened and releasably connected via screw with the participating joining partners. Alternatively, both their geometric design and the choice of joint connection may differ.

Through the use of the above-mentioned console-like connections, the cross member 2 on the end faces of the longitudinal member side, outer lifting modules 4 be attached in favor of the lifting height-height ratio.

1.4 shear stiffness

In order to increase the shear stiffness of the overall structure, in a preferred embodiment of the respective inner web plates 16 the longitudinal beam base modules 1 a so-called Schubkreuz 23 attached, cf. 7 , In order to meet the modular design, in this embodiment, the shear cross 23 variable in length and fixed by releasable connections. As shown in the embodiment, located at the chain ends hooks 25 at the web plate side lashing points 26 hooked up and then the chains 24 by means of turnbuckles 27 biased. Alternatively, the length of the shearbar 23 immutable and the connection to the side members 1 be executed differently.

Considering the in the web plates 16 present bending stresses under load is the shearpitch 23 preferably in neutral fiber, so installed in the dock height center. Alternatively, the location of the thrust cross 23 vary with respect to the web height, as well as the number and design of the attached drawers 23 ,

Likewise, the web plates 16 in their orientation preferably to each other by stiffening plates (see. 5a ) or by stiffening frame (see. 5b ) designed shear stiff.

1.5 Protective measures

For reasons of working and collision protection, the truss structure should 17 laterally with protective elements 28 such as grids, fences, sheets, plates are disguised. As in 8th , are preferably because of their low weight expanded metal 28 used. For accessibility, for example, to the drive unit 36 to facilitate, are the protective elements 28 preferably detachable to the wall sheets 16 attached. For this purpose, preferably holes in the web plates 16 provided that a connection of the protective elements 28 allow by means of fastening wire. Alternatively, a non-detachable attachment (eg welded joint) would be conceivable.

Such protective elements 28 can also be attached to the top detachable or non-detachable. As a result of superposition of high tensile bending stresses in the upper edge fiber of the web plates 16 Due to the load bearing on the one hand and high notch stresses through possible mounting holes on the other hand, these protective elements should 29 preferably with the cross struts 18 be connected.

1.6 Interface to the lifting equipment (eg crane)

The four suspension points 5 the overall traverse are preferably located respectively at the ends of the longitudinal beam base modules 1 , As in gig. 9, these are each as a support structure with rigid web and belt plates 7 and 8th as well as ribbing 9 executed. They are optimally adjusted to the center of the truss and optimized for power flow and can be detachable or inseparable from the web plates 16 of the respective basic module 3 be connected.

About a receiving hole 10 and optionally via an additionally attached connecting element 11 , such as As shackles, there are various ways of connecting the crossbar to the lifting means (eg crane). For example, ropes, chains, straps and the like can be used as a load attachment means.

1.7 Parking the traverse

In order to ensure a safe parking of the traverse even without prior preparation or use of compensating elements (eg wooden wedges), Abstellauflagen 30 at the lower edges of the web plates 16 the basic modules 3 or at the basic modules 3 self-attached. As shown in the exemplary embodiment, these consist of so-called stop rails 32 , which preferably by means of adapters 31 detachable and thus are exchangeable in the event of wear. The illustrated embodiment is a combination of impact-reducing acting and uneven floors balancing rubber elements 33 on the one hand and wear-resistant steel sheets 34 as a contact surface to the ground, on the other hand, cf. 10 , The effort to relieve the traverse with compensating elements, such as wooden wedges, is eliminated.

Optionally, the Abstellauflagen 30 also differently designed and inextricably tied up.

1.8 Modularity

Basically, the longitudinal and transverse beams 1 and 2 also as single traverses (cf. 11 ) or by pairwise arrangement next to each other as a double traverse (see. 12 ) are used. For this application stand for the cross member 2 also connections for connection to a lifting device (eg crane) 6 available, analog for the side members also connections for the load suspension 12 ,

In the double crossbeam composite are preferably simple bump stop made of rubber 51 as a spacer between the single traverse and prevent damage to the same. They are detachable on the web plates 16 the basic modules 3 attached, but can alternatively be attached differently.

The coupling of the individual traverses is, however, via the load attachment means (ropes, chains, straps o. Ä.). For this purpose, for example, a balance rocker 50 be used, which couples two of the four Lastanschlagmittelstränge, creating the original four suspension points 5 respectively. 6 purely mathematically reduced to three. This results in a statically determined system and all four load-securing middle strands can be assumed to be constructive (cf. Berufsgenossenschaftliche Regel 500, chap. 2.8, paragraph 3.5.3 ).

The advantage of this "loose" composite of the individual traverse compared to a rigid composite - for example, by screwing together the individual traverses - is that in addition to the expected alignment problems when connecting the individual traverses and unwanted tension at the joints under load can be avoided.

The use of a balance rocker 50 Incidentally, for the above reasons, also advantageous in the total crossbar network.

All single traverses can be used both as a longitudinal and as a cross member 1 and 2 be installed in the overall crossbar network.

As in. 13 shown is a quick release 14 in the form of a releasable bolt connection with electronic detection of the loads 15 installed. At this various load handling equipment such as straps, ropes and hooks can be struck. Optionally, the quick release closure 14 also directly by hooks, electromagnets o. Ä. Be replaced.

The quick and easy dismantling of the entire crosshead into the individual modules simplifies the process Transport selbiger, which is the use in different locations (eg construction sites) is conducive.

2 drive mechanism

Each longitudinal and cross member 1 and 2 preferably includes two drive units 36 , see. 14 , In this way, the extension lengths of the lifting modules 4 left and right of the respective basic module 3 set different and thus the center of gravity of the load to be aligned almost exactly below the crane rope. An impermissible inclined position of the traverse can thus be avoided.

In the drive units 36 These are preferably so-called electrically operated geared motors whose direction of rotation can show both clockwise and anticlockwise.

Depending on the installation conditions, the drive units 36 preferably within the basic modules 3 or alternatively directly to the web plates 16 the basic modules 3 be attached. Likewise, from a kinematic point of view, the drive units are advantageous in the lifting modules 4 to lay.

For all mentioned versions, it is recommended to protect the drive units 36 before collisions and / or heat (eg when used in steel works) the attachment of appropriate elements. Shown are Wärmeleitbleche 35 in the lower area of the basic modules 3 of longitudinal and transverse beams 1 and 2 ,

2.1 rope drives

At each drive unit 36 are preferably two cable drums 37 rigidly attached on the output side; a rope drum 37 for the rope to retract 39 and one for the rope to extend 40 the individual truss strokes 4 , see. 14 and 15 , The gear ratios of the cable drum diameter are adjusted according to the rope length ratios.

Ropes can only transfer tensile forces. So that the unclaimed rope can be wound up tight, the ropes must 39 and 40 always under tension. This is, as shown in the exemplary embodiment, by a cable tensioner 41 , realized consisting of spring, pulley and bracket. The rope ends of the extension and retraction cables 40 and 39 are each at the associated cable drum 37 and at the basic module 3 at a so-called Seilendbefestigung 42 attached.

The arrangement of pulleys 38 for extending and retracting the lifting modules 4 corresponds in each case to the principle of the "loose role", cf. 16 , By primarily halving the torque - combined with a doubling of the rope length - can be more compact and thus lighter electric motors 36 be installed, which in turn favors the payload weight ratio. A further improvement of the payload weight ratio could be done by considering a second cable level and thus exploiting the pulley principle, which could halve the torque acting again.

The use of rope scrapers or rope cleaners is particularly suitable in heavily contaminated areas of application 43 preferred on the cable drive. They reduce the risk of accidental jumping out of the rope from the grooves of the pulleys 38 or rope drums 37 and associated consequential damage or downtime. Furthermore, cable damage by the operating and maintenance personnel can thus quickly detected and the Ablegereifegrad the ropes 39 respectively. 40 be judged better.

As in 17 shown, the rope cleaner can 43 consist of simply folded sheets, which are attached to the existing pulley mounts. Here, the existing mounting screws can be used and additional nuts are used to attach the rope cleaner. The cleaning function itself is then fulfilled, for example, by strip brushes attached to the sheet metal, for example directly in the form of a ring.

Alternatively, a different structure and a different attachment of the rope cleaner 43 also conceivable.

The components for power transmission in traction drives (eg rope, chain and belt drives) are insensitive to bending and buckling caused by bending of the support structure due to lifting of the payload or collision of the crossbar with other objects. In contrast, the cylinder rods in hydraulic drives (such as in container traverses / spreaders usual) must be protected separately against bending.

Another advantage of the drive design described, especially compared to spreaders, which are usually equipped with hydraulic drives, is the small influence on the dimensioning of the overall construction. Larger stroke lengths do not necessarily require larger-sized drive units 36 , A longer rope ( 40 respectively. 39 ) and u. U. a larger number of relatively inexpensive pulleys 38 are sufficient at the same stroke speed.

This increases the flexibility and cost efficiency of modular dimensioning of new trusses.

2.2 Design and alternatives of drive technology

If the drive technology is advantageously designed only for the payload-free case, it is possible to achieve a further weight advantage in favor of the payload weight ratio. The disadvantage is that under load the strokes 4 are not adjustable. Alternatively, there would be the possibility of the strokes 4 also adjustable in load-bearing operating condition.

As an alternative to the described cable drive other power transmission mechanisms, such. B. lifting cylinder, movement on an inclined plane, rolling elements (ball screws, rack and pinion, Stirnradverzahnungen, friction gear u.), Hülltriebe, curve or coupling gear can be used.

Alternative to the electrically driven geared motors 36 can also others, z. B. based on fluids, drive units can be used.

3 guides

For all lifting module guides 44 . 45 and 46 it is preferably inexpensive sliding guides, alternatively rolling element guides would be conceivable. Basically, the guides consist of vertical and horizontal guides 44 such as 45 and 46 , see. 18 ,

As shown, the vertical guides 44 in the form of sliding guides by machining into the web plates 16 integrated. Alternatively, the vertical sliding guides 44 also as a separate component to the web plates 16 be attached.

To avoid lateral tilting (drawer effect), the width-length ratio must be as small as possible. This is the case with horizontal guidance 45 and 46 only one web plate 16 of the respective lifting module 4 guided. As shown in the embodiment, is a guide page 45 by machining in the web plate 16 integrated and the other leadership side 46 attached as a separate component to the same. Alternatively, both guide sides of the horizontal guides can also be used in two web plates 16 integrated or as separate components to the respective web plate 16 to be appropriate.

In case of failure of the locking mechanism 49 (see point 4 Adjustability and fixation of the traverse strokes) impermissible entry and exit states of the lifting modules 4 to avoid are stops 47 and 48 provided, cf. 19 , As shown, the stops are 47 for the maximum retraction states by machining into the web plates 16 integrated. Alternatively, these can also be used as a separate component, for. B. as a bolt, be appropriate.

On the other hand, the respective attacks 48 for the maximum extension states for insertion of the lifting modules 4 be demountable during final assembly.

The extension stops 48 can consist of bolts, which are fixed with axle holders and machined in grooves (shown in bold in 19 below) in the next larger lifting module 4 be guided. The limitation of the stroke is in this case by the length of the grooves.

4 adjustability and fixation of the truss strokes

To achieve a weight reduction of the drive units 36 , are longitudinal and transverse beams 1 and 2 only adjustable in payload-free operating condition.

Each side member 1 is just like the crossbeams 2 both in single and in paired construction asymmetrically adjustable in length.

In the overall crossbar assembly are the side members 1 through the frontally mounted cross member 2 coupled and accordingly only synchronously tuned to each other length-adjustable. However, the asymmetrical length adjustability is retained in the overall cross member system based on the cross member center line transverse to the longitudinal extent, cf. 20 ,

An impermissible tilt, due to the change in the center of gravity of the load during operation due to "independently" moving strokes 4 To avoid are all strokes 4 with so-called locking mechanisms 49 equipped, cf. 21 ,

LIST OF REFERENCE NUMBERS

1

longitudinal beams

2

crossbeam

3

basic modules

4

Lifting modules

5

Suspension points - side members

6

Suspension points - cross member

7

Suspension points - web plates

8th

Suspension points - belt plates

9

Suspension points - ribs

10

Suspension points - mounting hole

11

Suspension points - receiving element (shackle)

12

Load attachment points - side members

13

Load attachment points - Cross member

14

Load attachment points - quick release fastener

15

Load attachment points - Load measuring pins (electronic load detection)

16

wall sheets

17

Tudor recesses

18

crossbars

19

pushrods

20

Torsionsverstrebungen

21

angular elements

22

Angular elements - ribbing

23

thrust cross

24

Schubkreuz - chains

25

Drawbar - hook

26

Drawbar - lashing points

27

Drawbar - turnbuckles

28

Protective elements (expanded metal) on the side

29

Protective elements (expanded metal) at the top

30

Abstellauflagen

31

Shelving pads - adapter

32

Abstellauflagen - stop rails

33

Abstellauflagen - rubber elements

34

Shelving pads - steel sheets

35

heat conducting

36

Drive units (gearmotors)

37

cable drums

38

pulleys

39

Einfahrseile

40

Ausfahrseile

41

tensioner

42

End fixings

43

rope cleaner

44

Vertical guides (machined)

45

Horizontal guide (machined)

46

Horizontal guide (single component)

47

Einfahranschläge

48

Ausfahranschläge

49

locking mechanisms

50

balancing rocker

51

Double crossbeam - bump stop

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 3627370 [0003]
• WO 2012/080567 [0003]
• EP 0589095 A1 [0003]
• DE 102008000180 A1 [0003]
• WO 83/00855 [0004]
• US 3206243 [0004]
• US 4266904 [0005]
• US 4462627 [0006]

Cited non-patent literature

• Berufsgenossenschaftliche Regel 500, chap. 2.8, paragraph 3.5.3 [0077]

Claims (6)

Modular truss elements for trusses for lifting loads, characterized in that longitudinal and transverse support modules are provided, wherein the longitudinal and / or the cross member by telescopically arranged strokes at the ends are extendable and the free ends of the innermost strokes of the longitudinal members detachable with cross members or load-bearing elements and / or the free ends of the innermost strokes of the cross member are connectable with load-bearing elements. Modular truss elements according to claim 1, characterized in that each longitudinal or transverse member is usable as a single traverse and has connection devices for lifting means and / or that attachment devices for lifting means are attachable. Modular truss elements according to claim 1 or 2, characterized in that each longitudinal or transverse beam can be arranged in the longitudinal axis parallel to a same longitudinal or transverse beam and used as a double traverse. Modular truss elements according to claim 3, characterized in that in an arrangement as a double traverse , the coupling of the parallel longitudinal or transverse beams takes place on the load-receiving elements and / or that the parallel trusses are separated by spacers. Modular truss elements according to one of the preceding claims, characterized in that the telescoping takes place with at least one arranged in the longitudinal or transverse member drive. Modular truss elements according to one of the preceding claims, characterized in that the longitudinal and / or the cross member Abstellauflagen on the underside.

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