EP3239437A1 - Operator's platform and side rail therefore - Google Patents

Abstract

In a working platform with at least one platform floorboard (2) which can be detachably mounted on a four-legged stile (3) with a selectable ground clearance, the platform floorboard (2) having connecting lugs (6) assigned to the stanchions (3) and projecting beyond their ends. is provided, which are engageable with the stanchions (3), which are provided with distributed over their height holes for supporting an associated terminal lug, can thereby achieve a high ease of assembly and variability that the stanchions (3) circumferentially at least one have a receiving groove (9) which is continuous over its height and has two parallel, peripherally projecting flanges (8) for retracting associated connecting lugs (6), the flanges (8) forming the holes distributed over the height of the stanchions (3), Transverse to the receiving groove (9) arranged through holes (10) for inserting with a r each associated terminal tab (6) can be brought for engagement lock pins (11) are provided.

Description

The invention relates to a work platform with at least one platform plank, which is detachably mountable with a selectable ground clearance on a four-leg stanchion, wherein the platform plank is associated with the frame struts, provided over their ends connecting lugs, which can be brought into engagement with the stiles, which are provided with distributed over their height holes for supporting a respective associated terminal tab, and a stand spar for this purpose.

A work platform of the above type is from the GB 2 352 759 A known. In this known arrangement, the pairwise received on a common foot stiles are provided with distributed over their height through slots for inserting the dielenseitigen terminal lugs, which can be locked in the inserted position by a attached to a dielenseitig attached spring pin which can be inserted into an associated transverse bore are. To increase the security against wobbling, the platform plank and the stand spars interconnecting diagonal struts are provided, which are permanently attached to the platform plank and must be bolted to the associated stand spar. The above-outlined backup and stiffening measures of the known arrangement increase the assembly effort during assembly and disassembly of the known work platform and also limit the variability.

On this basis, it is therefore an object of the present invention, a working platform of the type mentioned while avoiding the described To improve disadvantages so that a high variability and stability and a high ease of installation are guaranteed.

This object is achieved in that the frame members each circumferentially at least one continuous over its height, by two parallel, circumferentially projecting flanges limited receiving groove for retracting associated terminal lugs, wherein the flanges with the distributed over the height of the stanchions holes forming transversely arranged for receiving groove through holes for the passage of can be brought with a respective associated terminal lug for engagement locking pins.

The retractable in the standholm-side receiving, dielenseitigen connection straps can come with her in the retraction front end of the groove bottom of the Einfahrnut to the plant and are laterally guided in the receiving groove through the side walls, so that when engaging the safety bolts in a longitudinal and transverse direction largely wobble-free arrangement results. At the same time the receiving groove also ensures a simple and safe attachment of provided with suitable connecting straps additional units, which results in a high adaptability to a variety of applications.

Advantageous embodiments and expedient developments of the higher-level measures are specified in the subclaims.

Thus, the stand spars advantageously a plurality of grooves on the circumference, preferably at least two diametrically opposed grooves arranged receiving grooves and / or at least two mutually perpendicular grooves arranged on the circumference. These measures increase the flexibility and versatility in an advantageous manner, since the stand spars provided with a plurality of receiving grooves on the circumference are suitable for receiving a plurality of connecting straps offset by 90 °, 180 ° or 270 ° from each other, which particularly favors a combination of multiple platforms and / or the cultivation of additional aggregates.

Appropriately corresponds to the inside width of the grooves exactly the thickness of the terminal lugs, resulting in a precise, play and thus wobble-free recording of an inserted terminal lug. Advantageously, the connecting straps can thereby have a deformation which increases their thickness, preferably in the form of a beading. This results in the use of relatively thin material high lateral stability and at the same time ensures that the grooves can have a comparatively large clear width, which may be advantageous for manufacturing reasons.

A further, advantageous measure may be that the connecting lugs each have two engagement openings arranged one above the other at a distance for two associated securing bolts and that the through-holes of the flanges of the stand beams are arranged at least in pairs at the same distance as the engagement recesses of the connecting lugs. This allows a particularly reliable mutual tension and thus a high stability of the overall arrangement.

Expediently, the upper engagement recess of the connection lugs can be designed as a slot projecting inwards from the front in the insertion direction, angled upwardly upwards and the lower engagement recess being formed as a hole adjacent to the lower tab edge. These measures increase the ease of installation, since in a pre-assembly only a safety bolt is sufficient and the second safety pin can be used later.

A further, advantageous measure may consist in that the through-holes of the stand-side flanges each have at least one radial, preferably horizontal, edge extension, and that the securing bolts can be carried out by means of the edge enlargement, in the Securing position which are provided by the bordering the receiving groove bounding flanges outside flanking beard approaches. This allows easy locking of the safety bolts by appropriate rotation. For this purpose, the securing bolts can each be provided with a handle which is arranged so eccentrically that its gravity causes the desired rotation.

According to a further, expedient training each two opposing uprights of the stanchion assembly to form a stalk frame by at least one of the stand spar ends spaced cross-beam can be firmly connected. The use of stable frameworks to build the proposed work platform increases overall stability and does not limit flexibility.

Further advantageous embodiments and expedient developments of the parent measures are specified in the remaining subclaims and will become apparent from the following description of some examples with reference to the drawings.

Figur 1

eine Grundeinheit einer erfindungsgemäßen Arbeitsplattform mit mehreren Anbau- und Ausstattungseinheiten;

Figur 2

eine Draufsicht auf einen Standholm mit zugeordneter Anschlusslasche in explosionsartiger Darstellung;

Figur 3

eine Seitenansicht der Anordnung gemäß Figur 2;

Fig. 4 bis 6

Varianten zum Standholmquerschnitt gemäß Fig. 2,

Figur 7

ein Beispiel für eine zur Erhöhung des Dickenmaßes querverformte Anschlusslasche und

Fig. 8 bis 10

Beispiele für unterschiedliche Variationsmöglichkeiten.

In the drawing described below:

FIG. 1

a basic unit of a work platform according to the invention with several attachment and equipment units;

FIG. 2

a plan view of a stand spar with associated terminal tab in an exploded view;

FIG. 3

a side view of the arrangement according to FIG. 2 ;

4 to 6

Variants for Standholm cross section according to Fig. 2 .

FIG. 7

an example of a transversely deformed to increase the thickness dimension connecting plate and

Fig. 8 to 10

Examples of different variations.

From Fig. 1 apparent base unit 1 of a working platform according to the invention includes a platform 2, which is accommodated on four each associated with a floor corner stiles 3. The standing in the region of the shorter side panel stiles 3 can be firmly connected to each other by one or more cross braces 4, so that in each case a stanchion frame 3a results. The platform deck 2 receiving lifter assembly here accordingly comprises two opposing stanchion frame 3a. The transverse bars 4 are expediently arranged at a distance from the ends of the associated stanchions 3, which may be provided at its lower end in each case with a level compensating device 5. Cover caps 5a may be provided at the upper ends.

To connect the platform floor 2 to the associated stand spars 3, the board is provided in the region of its four corners with over their associated stiles 3 facing ends protruding connecting lugs 6, which are engageable at the desired height in fixed engagement with the associated stanchions 3. These contain how Fig. 2 clearly shows, a support tube 7, the circumferentially at least one over the entire height continuous, by two circumferentially projecting, parallel flanges 8 limited, radial receiving groove 9 for inserting one or more connecting plates 6 at the desired height. Since the receiving groove 9 extends over the entire stand height height, the ground clearance of the platform floor 2 can be varied accordingly.

The flanges 8 are how Fig. 3 can detect, with distributed over the entire stand height height, transversely to the receiving groove 9 extending through holes 10 for inserting a respectively assigned, in Fig. 2 indicated Secured bolt 11 provided, which traverses the flanges 8 and an inserted therebetween 6 connecting tab. The connection tabs 6 include, as shown Fig. 3 The height spacing of the engagement recesses 12a, 12b corresponds to the height spacing of pairwise associated through holes 10 in the region of the flanges 8. The through holes 10 may be arranged in pairs distributed to the stand height height , where the pair spacing and the hole spacing may be different. In the example shown, the through-holes 10 are arranged in the form of a row of holes with the same spacing between the engagement recesses 12a, 12b so that the ground clearance of a platform board 2 received on such stand rails 3 can be varied with a comparatively small step spacing corresponding to the hole spacing.

The engagement recesses 12a, b of the connection lugs 6 may be identical. In the example shown, the two engagement recesses 12a, b are designed differently. The upper engagement recess 12a is formed as an opening extending from the front in the direction of insertion tab, angled inside upwards slot. The lower engagement recess 12b is formed as a hole adjacent to the lower tab edge. First, a hooking of the slot can be done on a already placed in position securing bolt 11. The second securing bolt 11 can then be pushed through later. The safety pins 11 have, as Fig. 2 shows, an eccentrically arranged handle 13 and in the direction of the handle eccentricity radially projecting beard approaches 14. The through holes 10 have each, as shown Fig. 3 It can be seen, horizontal, radial extensions 15 through which the beard approaches 14 are feasible to flank the traversed through the receiving groove 9 limiting flanges 8 on the outside to secure the position of the securing bolt 11 in the working position. The eccentricity of the handle 13 ensures that the locking pins 11 rotate by gravity with respect to their insertion position, so that the beard approaches 14 except Cover with the radial extensions 15 come.

The the Fig. 2 underlying stand spar 3 contains two diametrically opposite same grooves 9 on the circumference. But it can also be more or less and / or differently arranged such grooves provided on the periphery, as from the 4 to 6 evident. The the Fig. 4 underlying stand spar 3 also has two grooves 9, which are not diametrically opposite each other, but offset by 90 ° on the circumference. The the Fig. 5 underlying stand spar 3 is provided with only one receiving groove on the circumference. In the execution according to Fig. 6 are each provided at 90 ° circumferentially mutually offset grooves 9, so that there are two diametrically opposite, compared to a central receiving groove 9 offset by 90 ° grooves 9. Arrangements with more than three grooves 9, for example, four cross-shaped grooves 9, would also be conceivable.

The grooves 9 may have the same inside width at their entire depth, to which the in Fig. 2 indicated thickness d of the terminal lugs 6 is adjusted. For manufacturing reasons, the clear width of the grooves 9 often can not be chosen from a relatively high minimum value. In order to still be able to use a thinner material for the connecting straps, the connecting straps 6 are expedient as in Fig. 2 indicated at 6a, provided with suitable transverse deformations. To form an increase in the thickness dimension causing transverse deformations 6a, for example, distributed over the surface beads etc. and / or in Fig. 7 shown, edge features etc. may be provided. The receiving grooves 9 suitably project inwardly relative to the inner circumference of the support tube 7, so that the wall region forming the groove bottom is offset inwardly relative to the circumferential tube wall of the support tube 7, which is a very compact arrangement and at the same time a stiffening of the lateral groove boundaries by the adjoining thereto Tube wall results, which has an advantageous effect on the accuracy and stability. The through holes 10 are the outer flange portions associated, which facilitates the handling of the securing bolt 11.

At the in Fig. 1 indicated base unit 1, the two stanchion frame 3a below the platform platform 2 receiving them are additionally connected by two parallel thereto, fixed to the longitudinal direction of the platform floor 2 opposite stiles 3 struts 16 with each other. These are provided at their ends with the connecting lugs 6 of the platform floor 2 corresponding terminal lugs 6, which are connected as the dielenseitigen connection lugs 6 to the uprights 3. The struts 6 represent an additional equipment that increases the stability.

In FIG. 1 is indicated a further additional equipment in the form of an attachable to the base unit 1 in the longitudinal direction extension 1a. This contains two uprights 3 and a standing frame frame 3a formed therewith, a recordable thereon with one end platform 2, and two provided below this struts 16, the facing away from the extension 1a stanchion frame 3a facing away, free connecting lugs 6 of the platform plank 2a and the struts 16 for connecting the extension 1a to the base unit 1 for engagement with the facing uprights 3 of the base unit 1 can be brought. In order to make this possible, the uprights 3 of the base unit 1 have a cross section with two diametrically opposed receiving grooves 9. From the above it follows that stand spars 3 with two or more grooves 9 on the periphery allow the connection of additional equipment, provided that they have suitable connecting straps 6 , Appropriately, therefore, have the base unit 1 associated stiles 3 at least two grooves 9 on the circumference.

As additional equipment is in Fig. 1 a step 17 indicated, which is provided with lateral connection tabs 6. The length of the step 17 corresponds to the width of the platform plank 2. The step 17 can therefore be mounted with its connecting lugs 6 on the side facing away from the platform plank 2 side of the uprights 3 a stanchion frame 3a of the base unit 1. The Connecting lugs 6 of the stage 17 are provided in the example shown with only one engaging recess 12 formed by a bore.

As additional equipment can in Fig. 1 indicated railing and handrails may be provided. In this case, the railing 18 is one of the narrow side of the base unit 1 and a connected thereto extension 1a associated transverse railing, which is fixed to two in the width of the platform floor 2 and 2a opposite stiles 3 and this with at the bottom attached to its side rails, the connecting plates 6 of the platform 2 corresponding connecting plates 6 is provided. The railing 19 is a longitudinal or side railing, which can also be connected to two, in this case in the longitudinal direction of the base unit 1 and a connected extension 1a opposite stiles 3, provided at the lower ends of the side rails suitable connecting straps are provided. In the example shown, the longitudinal railing 19 is attached to the frame of the associated platform floor 2 and is provided for this purpose with attachable at the lower end of its side rails holding claws 20 which surround a frame legs of the frame of the associated platform floor 2 and 2a and can be clamped thereto by clamping screws. The platform floorboards 2 and 2a respectively contain a support frame 21 carrying the connection lugs 6, on which a cover plate which closes its opening is received, so that the holding lugs 20 can be brought into engagement from below.

Another, the basic unit 1 associated additional equipment can be a in Fig. 1 still indicated increase 22 be. This is indicated here by a stanchion frame 3 a with two interconnected by a transverse strut, side stanchions 3. The uprights 3 of the base unit 1 and the increase 22 can abut each other with free end faces. The stanchions 3 of the increase 22 at the lower end without leveling and the facing ends of the lower legs 3 without cap. In the example shown, notwithstanding these elements are not removed, so that no makeover is required.

To form the elevation 22, a smaller height than in the basic unit 1 having stiles 3 are provided in the illustrated example. But it would also be an equal or greater height conceivable. The use of different heights for base unit 1 and elevation 22 increases the versatility.

To determine the increase 22 on the base unit 1 can in Fig. 1 indicated connecting members 23 may be provided. These may have connection tabs 6, to which, for example, a plug-in pin can connect. Such connecting members 23 can be fixed with their two connecting straps, for example, to the lower stanchions 3 and the extension 22 can be easily plugged, each pin engages in an associated support tube. The illustrated connecting members are preferably formed as the abutting support beams comprehensive sockets.

The illustrated optional extras are just a non-exhaustive series of examples. Of course, other additional equipment can be accommodated on the supporting bars 3 of a basic unit 1, provided that the suitable receiving grooves 9 and connecting lugs 6 are present. So could e.g. also a transverse extension or broadening be provided.

The construction principle on which the proposed work platform is based makes it possible to show a variety of possible combinations, of which in the Figures 8-19 only a few are shown. These examples are not exhaustive either. The FIG. 8 shows a catwalk formed by three arranged at different heights platform planks 2, wherein a base unit 1 and two adjoining longitudinal extensions 1a, 1b are provided, of which the first extension 1a of the extension 1a according to FIG. 1 corresponds approximately and the second extension 1 b a stalk frame lesser Height is based. The FIG. 9 shows a catwalk, wherein to a base unit 1, a longitudinal extension in the form of a rise ramp is formed, which is formed by that the stanchion frame 3a of the extension are tilted, so that there is a tendency of the ramp platform platform 2 forms. The basic unit 1 adjacent platform 2 of the ascent ramp is only with the lower engaging recesses 12b of their connecting plates 6 in engagement with associated safety pin 11. At the belonging to the extension stanchion frame 3a is the normal definition provided with two securing bolts.

The FIG. 10 1 shows a stage formed from a plurality of basic units 1 arranged longitudinally and transversely to one another, with three rows of basic units 1 being arranged next to one another in the illustrated example. It would also be conceivable to provide instead of the middle row only on the mutually facing stanchions of the left and right row recorded platform planks. For this purpose, at least the mutually facing uprights of the left and right row would have a cross-sectional shape with mutually offset by 90 ° receiving grooves 9, and the thereto attached platform planks of the middle row would have to extend in the direction of their width, projecting over their longitudinal sides connecting tabs 6.

Although some examples of the invention are explained in more detail above, without this, however, a restriction should be connected. Rather, the person skilled in a number of ways are available to adapt the general construction principle of the present invention to the conditions of the individual case.

Claims (15)

Working platform with at least one platform floorboard (2) which can be detachably mounted with a selectable ground clearance on a four-legged stile (3), wherein the platform floorboard (2) is associated with the stanchions (3), connecting lugs (6) projecting beyond their ends. is provided, which are engageable with the stanchions (3) can be brought, which are provided with distributed over their height holes for supporting an associated terminal lug (6), characterized in that the stiles (3) circumferentially at least one continuous over their height , characterized by two parallel, circumferentially projecting flanges 8 limited receiving groove (9) for retracting associated connecting lugs (6), wherein the flanges (8) with the over the height of the stiles (3) distributed holes, transverse to the receiving groove (9) arranged through holes (10) for inserting engageable with a respective associated terminal tab (6) for engagement n securing bolts (11) are provided. Work platform according to claim 1, characterized in that the stanchions (3) have a plurality of grooves (9) on the circumference. Work platform according to claim 2, characterized in that at least two diametrically opposed grooves (9) are provided. Work platform according to claim 2 or 3, characterized in that at least two mutually perpendicular recessed grooves (9) are provided. Working platform according to one of the preceding claims, characterized in that the clear width of the receiving grooves (9) corresponds to the thickness of the connecting lugs (6), which preferably have a thickness-increasing deformation, in particular edge-side expression (6a). Work platform according to one of the preceding claims, characterized characterized in that the connecting lugs (6) each have two spaced superimposed engagement recesses (12a, 12b) for two associated safety bolts (11) and that the through holes (10) of the flanges (8) of the stand spars (3) at least in pairs at the same distance how the engagement recesses (12a, 12b) of the terminal lugs (6) are arranged. Work platform according to one of the preceding claims, characterized in that the upper engagement recess (12a) of the terminal lugs (6) as from the front in the insertion lug edge outgoing, inside upwards angled slot and the lower engagement recess (12b) are formed as the lower tab edge adjacent hole , Work platform according to one of the preceding claims, characterized in that the through-holes (10) of the flanges (8) each have at least one radial, preferably horizontal edge extension (15) and in that the securing bolts (11) can be carried out by the edge extension (15) the securing position, the flanges (8) delimiting the traversed receiving groove (9) are provided on the outside flanking beard attachments (14). Work platform according to one of the preceding claims, characterized in that in each case two mutually opposite stanchions (3) of the stanchion assembly for forming a stanchion frame (3a) by at least one cross-beam (4) are interconnected. Work platform according to one of the preceding claims, characterized in that a basic unit (1) with a platform floor (2) and four supporting stiles (3) are associated with additional equipment having free terminal lugs (6) and hereby to from the platform floor (2) facing away receiving grooves (9) of each facing uprights (3) of the base unit (1) are receivable. Work platform according to one of the preceding claims, characterized in that stand spars (3) or stile frame (3a) of different heights are present. Work platform according to one of the preceding claims, characterized in that the mutually opposite stiles (3) of two by a platform plank (2 or 2a) bridged stile frame (3a) each by at least one further, provided with connecting lugs (6), preferably as a pair are bridged by bridged with provided at the ends with connecting straps (6) struts (16) bridging. Work platform according to one of the preceding claims, characterized in that as additional equipment at least one to a base unit (1) in the longitudinal direction connectable, provided with free connection tabs (6) longitudinal and / or transverse extension (1a) and / or at least one by connecting members (22 ) connectable attachment extension (1b) and / or at least one step (17) with lateral connecting straps (6) and / or at least one railing (18) with lower connecting straps (6) is provided. Work platform according to one of the preceding claims, characterized in that the platform plank has a support frame (22) whose opening is covered by a cover plate and that on the support frame (22) with additional support claws (21) engageable additional equipment, preferably in the form of a railing, are provided. Stand spar for receiving a device provided with at least one associated terminal lug (6), arranged above ground, characterized by at least one circumferentially provided, over the stand height height continuous, by two parallel, circumferentially projecting flanges (8) limited receiving groove (9), preferably a plurality of such Grooves for retracting in each case at least one associated connection tab (6), wherein the flanges (8) with over the stand height height distributed, transversely to the receiving groove (9) extending through holes (10) for inserting with a respective associated, in the receiving groove (9) inserted connecting lug (6) engageable for securing pins (11) are provided.

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