DE102009041437A1 - Side guardrail for scaffolding - Google Patents

Abstract

Side guard rails for a work scaffold, the work scaffold consisting of scaffolding frames parallel to each other, which in turn are formed from vertical spars with rungs arranged in between, and the scaffolding frames are designed to be pluggable to increase the working height and one or more working platforms can be fastened horizontally between the scaffolding frames, with the side guardrails are detachably connected to the scaffolding frame above each working platform as a lateral fall protection, characterized in that the side guardrail consists of at least one longitudinal strut, to which a downward-facing bracket part is attached, which in its middle area is a detachable connection with the in the work scaffolding Has suspended working platform.

Description

The invention relates to a side guardrail for work scaffolding as a side fall protection according to the preamble of patent claim 1.

With the subject of his own patent DE 10 2007 011 777 B1 is a collapsible scaffold and a method for its construction and dismantling has become known. The method for assembling and dismantling such a work scaffold is referred to in the context of the present invention. For this reason, the earlier patent is intended to be encompassed by the disclosure of the present invention.

In the older patent DE 10 2007 011 777 A1 However, there is the disadvantage that only a simple side guardrail (there with the reference numeral 17 ) can be hung from below with an auxiliary tool (a rod with a hook arranged thereon).

In particular, a knee bar is missing and the structure with an auxiliary tool is more difficult.

The invention is therefore based on the object, starting from its own DE 10 2007 011 777 A1 To develop a side guardrail so that it can be mounted in a simpler way, that it is easier to handle and that the arrangement of the side guardrail still contributes to an additional stabilization of the scaffolding.

To solve the problem, the invention is characterized by the technical teaching of claim 1.

An essential feature of the invention is that the side guard railing according to the invention consists of at least one horizontally extending longitudinal strut, on both sides of a strap member engages, which extends downwards, wherein the strap member forms a lower connecting portion, with which it is arranged on the respectively next to this connecting part working platform is detachably connectable.

With the given technical teaching, there is the significant advantage that now the side guardrail consists essentially of a respective longitudinal strut, to which a downwardly directed bracket member is attached, which bracket part enters in its central region a detachable connection with a suspended in the scaffold working platform and can be fastened there.

This results in the significant advantage that now an absolutely secure lateral fall protection is given by the formation of the side guard rail with a laterally downwardly extending bracket part, because according to a further feature of the invention in the bracket part additionally a knee bar is integrated so that this Ironing a superior protection function for side cover of the scaffolding for protection against falling down of a person trains.

It is important, namely, that the strap part is integrated in the lateral areas of the Arbeitsgerüstetes that there is no slip-through or diarrhea area through which a standard sphere with a diameter of z. B. 470 millimeters can fall through.

Thus, the protective function of the side guard rail according to the invention is evident, because the previous embodiments did not offer such protection.

Important in the present invention is also that with the upper, detachable hooking the respective longitudinal strut of the side guardrail, a first connection between the mutually associated and mutually parallel scaffolding frames of the scaffolding is given, which are already solidified and secured against buckling.

Important here, however, is that the bracket part, which is firmly connected to the respective longitudinal strut, occupies a detachable connection with the hooked in the scaffolding at a certain height working platform in its lower region, so that in this case an additional attachment is given.

It is therefore a three-point attachment of the respective side guardrail, namely with two upper attachment points, which engages the side guardrail at the ends of the longitudinal strut on the rungs of the respective scaffolding frame and further with a central, lower and spaced detachable connection, the ironing part of the Side guardrail with the suspended in the scaffold working platform received.

For ease of description, only a single side guard rail and its structure and construction will be described in the following description after the opposite side guard rail is formed exactly the same. It is therefore formed symmetrically to the other side guardrail, so that the description of the structure and the function of a single side guardrail is sufficient.

The subject of the present invention does not only result from the article the individual claims, but also from the combination of the individual claims with each other.

All information and features disclosed in the documents, including the abstract, in particular the spatial design shown in the drawings, are claimed to be essential to the invention insofar as they are novel individually or in combination with respect to the prior art.

In the following, the invention will be explained in more detail with reference to drawings illustrating several execution paths. Here are from the drawings and their description further features essential to the invention and advantages of the invention.

Show it:

1 : perspective view of a work scaffold after completion of a first step

2 : the scaffolding after 1 after completing another work step

3 : the scaffolding after 2 after attaching the upper side guard railing

4 : the scaffolding after 3 after attaching the upper platform

5 : Perspective view of the detachable connection between the bow part of the side guard rail and the working platform

6 : perspective view of the connection between the work platform and the scaffolding frame

7 : Perspective view of an additional connection of the side guard railing on the rung of the scaffolding frame with a pivoting hook

8th a modified embodiment of a side guard rail according to the invention

9 : a second modification of a side guard railing

10 : a third modification of a side guard railing

11 : a fourth modification of a side guard railing

12 : perspective partial view of the hook profile

13 : Section through the one-point attachment of the hook-in profile to the work platform

14 : The baseboards after 14 in the form of a folding box

15 : The baseboards when folded

In 1 is the first construction state of a scaffold 1 represented, which in principle consists of two mutually parallel and spaced-apart scaffolding frames 2 . 3 consists. Each scaffolding frame consists of parallel vertical bars 5 passing through horizontal sprouts 4 connected to each other.

The embodiment according to 1 shows only scaffolding 2 . 3 that have eight sprouts. The invention is not limited thereto. It can also scaffolding frames 2 . 3 used, for example, have only four, six or ten sprouts.

The arrangement of eight rungs leads to such a scaffolding 2 . 3 has a height of about two meters.

It is of course within the meaning of the earlier patent of the same applicant also possible to combine short scaffolding frames with longer scaffolding frames.

At the upper end of the respective spar 5 are each plug-in parts 6 arranged. These are tube cross-sections of reduced diameter connected in one piece to the spars, so that these plug-in parts 6 an overlying scaffolding frame 2a . 3a (S. 2 ) can be plugged.

Only as an example is in 1 shown that the scaffolding 1 on rollers 7 stands. Instead of rollers, height-adjustable spindle feet can also be used.

Likewise, it is only shown by way of example that the lower scaffolding frame 2 . 3 Diagonal supports 8th . 9 has, which are directed against each other on different sides of the scaffolding 2 . 3 attack. Such diagonal supports 8th . 9 but can also be omitted.

Now it is important that the work framework 1 building person a side guardrail 11 . 12 assembled. Each side guardrail 11 . 12 is on one side of the scaffold 1 arranged and forms a lateral protection against falling out of the scaffold to the side.

After the side guardrail 11 . 12 are designed exactly identical, it is sufficient, only the construction of a single side guardrail 11 to describe.

The side protection railing 11 consists of longitudinal struts 13 which are laid horizontally and which at the same time form the handrail when the building person on a working platform 10 standing in the middle area of the scaffolding 2 . 3 is mounted.

The connection of the work platform 10 with the sprouts 4 the scaffolding 2 . 3 is in 6 shown. There it can be seen that on the horizontal spar of the platform a recess 26 is present, which in its clear width about the outer circumference of the rung 4 corresponds, so this recess 26 the sprouts 4 partially surrounds. As an additional lift-off can still a swivel hook 25 be provided, the rung 4 also embraces from below.

Instead of a recess 26 in the horizontal side rail 24 the work platform 10 according to 6 It is also possible to provide other hook-in hook connections. For example, it may be provided that at the free outer end of the respective side spar 24 a hook is arranged, which is also the rung 4 partially engages from above and in addition to this hook still a swivel hook 25 be arranged, which is also the rung 4 embraces from below.

So there are a number of ways to work platforms 10 with the sprouts 4 from the scaffolding 2 . 3 connects, without this being essential to the present invention.

Important in the present invention is now that the person according to 1 on the work platform 10 stands, the longitudinal strut 13 around the waist, so the knee bar 15 attached to the temple part 14 of the side guardrail 11 is arranged, in addition serves as fall protection in knee height.

So it is essential that the side guardrail 11 from the respective longitudinal strut 13 consists, starting from the obliquely downwards starting a bracket part 14 is arranged, in the interior of a knee bar 15 is arranged.

The middle area of the temple part 14 forms a detachable connection via a suspension profile 19 with the outside of the work platform 10 out.

Furthermore, it is essential that the ironing part 14 down over the underside of the work platform 10 outstretched and there a connection area 17 which forms at the same time as grip area 18 is suitable for attacking the hands of an upbuilding person.

This is evident 2 and the 3 , which are described below.

According to 2 now the person is standing on the work platform 10 and can not fall out laterally because of the temple part 14 such a side cover forms that the protection areas 20 . 21 . 22 so close are that a standard ball with 470 millimeters by none of the protection areas 20 - 22 could pass through and fall out there.

For a simple and effective protection against lateral falling out is given by the side guard railing according to the invention.

This also corresponds to the European regulation EN 1004 , which stipulates that a standard ball with 470 millimeters nowhere sideways through the protection areas 20 - 22 may pass through.

Now that the building person on the work platform 10 according to 2 stands, she just succeeds, the scaffolding 2a . 3a to get from the bottom and on the plug-in parts 6 put on, causing the scaffolding frames 2 . 3 through the scaffolding 2a . 3a be extended vertically upward, as the 2 represents.

As the next building step, the person now takes a side guardrail from the ground 11a and hang it by attacking the lower grip area 18 above, as in 3 is shown. The side protection railing 11a ( 12a ) is thus by grasping the top rung 4a detachably mounted. This is evident 3 ,

As the next step, according to 4 , can now on the lower platform 10 standing person the upper working platform 10a hook them into their grip area by hanging them overhead into the rungs of the upper scaffolding frame 2a . 3a can be hung.

During this work is automatically the releasable connection between the bracket part 14 of the upper side guard railing 11a . 12a and the lateral areas of the upper platform 10a produced. Through this additional connection, the two scaffolding frames 2a . 3a kept at a distance, and stabilized. There is thus no danger that these pivot laterally inwards or lose stability.

It follows that the temple part of the side guardrail 11 . 12 to an additional stabilization of the scaffold 1 Contributes and Although by a suspension connection, as they are based on the 5 will be described in more detail.

It is essential that in the connecting part 17 in the area of the temple part 14 a suspension profile 19 is formed, which is a recess 29 forms, in which releasably a fastening bolt 23 engages on the side rail 24 the work platform 10 . 10a is attached.

The connection is made on both sides, ie on both sides of the side guardrail 11 as well as on the side of the side guard railing 12 ,

It follows that this additional suspension connection a favorable stability for the entire scaffolding 1 according to 4 because it can not move more sideways. It is therefore a diagonal connection between the scaffolding frames 2 . 3 which, in principle, the previously mentioned diagonal supports 8th . 9 replace.

This forms the side guardrail 11 . 12 a triangular connection, which provides additional stabilization of the scaffolding 1 formed.

The closed system is also obtained by attaching the work platform 10 on the respective scaffolding frame 2 . 3 , where the recess 26 over the rung 4 crosses over, as already stated above with reference to the 6 has been described. In addition, even the swivel hook 25 as a lifting protection for the working platform 10 be used.

Thus, it is no longer possible, the upper side guardrail 11a . 12a hang out because the work platform 10a is through the swivel hooks 25 secured against digging and at the same time has the side guardrail 11 . 12 the middle connection with the fastening bolt 23 ingested.

Thus, it is no longer possible that if the user now according to 4 on the upper platform 10a climbs, he no longer has the option of the upper side guardrail 11a . 12a hang it, because it is on the one hand firmly above the mounting bolt 23 with the work platform 10a connected and on the other hand is the working platform 10a over the swivel hooks 25 stuck with the sprouts 4 of the scaffolding 2a . 3a connected.

This prevents incorrect operation.

The 7 shows that the longitudinal strut 13 of the side guardrail 11 . 12 not only on the rung 4 can be attached, that the longitudinal strut a recess 27 with which they partially the rung 4 embraces.

As an additional backup can also be a swivel hook 28 used, which is a lift-off for the joint strut 13 forms.

In and of itself is this swivel hook 28 not necessary, because yes the lower and middle connection with the fixing bolt 23 at the work platform 10 . 10a already enough to prevent the side guardrail 11 . 12 is posted upwards.

The swivel hook 28 So it's just intended as an extra backup.

The 8th to 11 now show different forms of side guardrails 11b . 11c . 11d and 11e , where, for example, the 8th shows that the side guardrail can be formed not only with a bracket shape in the form of about a V, but also an approximately round profiled bracket, and this 8th shows. Again, the recess 29 arranged in the central region of the bracket part to the central attachment of the side guard rail in the region of the bracket part 14b to enable.

The 9 shows as an alternative embodiment that it can also be a sharpened V, as it is in 9 with the strap part 14c is shown.

The 10 shows that the bow part 14d may also be formed as a rectangle, which in turn the middle connection region with the recess 29 in connection with the fastening bolt 23 he brings.

The 11 shows that the bow part 14e also with two recesses 29a may be designed so as to provide not only a central attachment to the work platform but two separate and spaced apart fasteners.

Instead of fastening with a fastening bolt 23 Other removable fasteners can be chosen, such. B. pin or other positive connections, such. B. spring-loaded hooks which are spring-loaded open in one position (eg., The open position) and are brought by spring load in the closed position. It can also be provided a tongue and groove connection. Thus, all form-fitting, detachable connections are claimed. It is important that a particularly simple dismantling of the scaffold is given by the fact that the user with the top platform 10a starts and the in 6 shown swing hooks 25 so as to remove the top platform, thereby releasing the top Connection with the fastening bolt 23 and the side guardrail 11a . 12a will be annulled.

Such a framework can be built and dismantled in one-third of the working time as compared to known scaffolding of competitive products.

It is dispensed with screw connections and it is only provided Einhängeverbindungen, which makes the structure very simple, designed quickly executable and ensures safe hooking, without having to pay attention to the strength of screw.

The 12 shows that the hooking profile 19 , which is the one-point connection of the bracket part 14 with the work platform 10 provides, from an upwardly open U-profile 31 consists.

Gem. 3 the U-profile forms an upwardly open receiving opening 38 for receiving a longitudinal leg 30 serves, which is fixed to the work platform 10 connected is. In the area of this longitudinal leg 30 is the previously mentioned fixing bolt 23 arranged, with its bolt-side end in the upwardly one-sided open recess 27 engages in the area of the thigh 32 of the U-profile 31 is arranged.

The opposite leg 33 surrounds the longitudinal leg 30 the work platform from the other side, thus allowing a one-point attachment between the mounting bolt 23 and the U-profile 31 given is.

Thus, it is clear that a suspension of the side guardrail 11 . 12 only possible if the work platform first 10 from their connection with the sprouts 4 Will get removed.

It is therefore not possible, with mounted platform the side guardrail 11 . 12 dig upwards because the receiving opening 38 in the U-profile 31 of the suspension profile 19 a lift up in the direction of the arrow 39 prevented. Only if the work platform 10 it can be solved in the direction of the arrow 39 up from their connection with the sprouts 4 from the scaffolding frame 2 . 3 can be removed and thus can the thus freed side protection railing 11 . 12 in the direction of the arrow 39 be taken upwards, in which the in 7 shown recess 27 out of engagement with the associated rung 4 is brought.

This forms the side guardrail 11 . 12 an additional stable securing of the scaffolding 1 because it forms a three-point connection and the three attachment points are arranged at a large distance from each other.

The two upper attachment points are the suspension connections gem. 7 (recess 27 overlaps the rung 4 , optionally with a swivel hook 28 can additionally be used) and the middle lower connection point is through the fastening bolt 23 given in the as U-profile 31 Trained hook profile 19 releasably engaged.

Of course, the head of the fastening bolt 23 bigger than the recess 29 in the thigh 32 of the U-profile 31 dimensioned to prevent lateral peeling.

The arrangement of such a stable work scaffold has the further advantage that by pulling down the bracket part 14 on the area of the work platform 10 and the local arrangement of a one-point attachment is the advantage that arranged in this area baseboards 34 . 35 may be particularly thin, because they are indeed covered laterally by the struts of the temple area. This results from the 4 where the baseboards 34 . 35 dashed lines are shown. The baseboards shown there 34 . 35 lie down on the inside of the bracket part 14 of the side guardrail 11 . 12 and can be so particularly thin dimensions, because they need no lateral reinforcement, after the outside through the bracket part 14 be supported.

For this reason, it is gem. 14 and 15 possible for the first time, not only in a familiar way the baseboards 34 . 35 to make attachable to the work platform, each individual baseboard must be handled separately.

Rather, it is after 14 and 15 provided, now the baseboards 34 . 35 in the form of a folding box 36 to summarize, whereby - acc. 14 - the individual baseboards 34 . 35 by hinges arranged on the corner 37 are pivotally connected to each other.

Such a folding box can be easily folded (see 15 ), it is easy to transport and easy to set up.

LIST OF REFERENCE NUMBERS

1

work scaffolding

2

scaffolding frame 2a

3

scaffolding frame 3a

4

sprouts

5

Holm

6

male member

7

role

8th

diagonal support

9

diagonal support

10

platform 10a

11

Side guard rail 11a

12

Side guard rail 12a

13

Longitudinal strut (handrail)

14

Ironing part

15

kneerail

16

Strut (from 14 )

17

connecting part

18

grip area

19

Hook-

20

the scope

21

the scope

22

the scope

23

mounting bolts

24

Side rail (working platform 10 )

25

swivel hook

26

Recess (working platform 10 )

27

Recess (side guardrail 11 . 12 )

28

swivel hook

29

recess

30

Longitudinal legs (from 10 )

31

U-profile (from 19 )

32

leg

33

leg

34

baseboard

35

baseboard

36

folding box

37

hinge

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

• DE 102007011777 B1 [0002]
• DE 102007011777 A1 [0003, 0005]

Cited non-patent literature

• EN 1004 [0055]

Claims (14)

Side guardrail for scaffolding, whereby the scaffold ( 1 ) from mutually parallel scaffolding frames ( 2 . 3 ), which in turn consist of vertical bars ( 5 ) with rungs ( 4 ), and the scaffolding frames ( 2 . 3 ) are designed to increase the working height fastened to each other, and one or more working platforms ( 10 . 10a ) parallel to each other and horizontally between the scaffolding frames are fastened, the side guardrail ( 11 . 12 . 11a . 12a ) as lateral fall protection above each working platform ( 10 . 10a ) with the scaffolding frames ( 2 . 3 ) Are detachably connected, characterized in that the side protection rails ( 11 . 12 . 11a . 12a ) of at least one horizontal longitudinal strut ( 13 ), at which a downwardly directed bracket part ( 14 . 14a ), which in its middle region has a detachable connection ( 19 . 23 . 29 . 31 ) with the work platform suspended in the scaffolding ( 10 . 10a ) having. Side protection railing according to claim 1, characterized in that the strap part ( 14 ) covers the lateral areas of the work scaffold such that there is no slipping or diarrhea area through which a standard sphere with a diameter of about 470 millimeters can fall. Side protection railing according to claim 1 or 2, characterized in that the strap part ( 14 ) is formed approximately arcuate and symmetrical. Side protection railing according to one of claims 1 to 3, characterized in that with the upper, detachable hooking the respective longitudinal strut ( 13 ) of the side protection railing ( 11 . 12 ) a first connection between the mutually associated and mutually parallel scaffolding frames ( 2 . 3 ) of the scaffold is given, which are solidified and secured against buckling. Side protection railing according to one of claims 1 to 4, characterized in that the ironing part ( 14 ), which firmly with the respective longitudinal strut ( 13 ) is connected, in its lower part a releasable connection with the hooked in the scaffolding at a certain height working platform ( 10 . 10a ) is received, so that in this case an additional attachment is given Side protection railing according to one of claims 1 to 5, characterized in that the side guardrail ( 11 . 12 ) forms a three-point attachment in the scaffolding. Side protection railing according to claim 6, characterized in that the three-point attachment of the two upper attachment points with which the side guardrail ( 11 . 12 ) at the ends of the longitudinal strut ( 13 ) on the sprouts ( 4 ) of the respective scaffolding frame and further comprising a central, lower and spaced-apart releasable connection ( 19 . 23 . 29 . 31 ), which forms the temple part of the side guardrail with the suspended in the scaffold work platform. Side protection railing according to one of claims 1 to 7, characterized in that in the temple part ( 14 ) a knee bar ( 15 ) is arranged. Side protection railing according to one of claims 1 to 8, characterized in that the suspension connection of the side guardrail with the working platform as a hooking profile ( 19 ) is formed, which has a recess ( 29 ), in which releasably a fastening bolt (in 23 ) which engages on the side rail ( 24 ) of the work platform ( 10 . 10a ) is attached. Side protection railing according to one of claims 1 to 9, characterized in that the suspension profile ( 19 ), which the one-point connection of the bracket part ( 14 ) with the work platform ( 10 ), from an upwardly open U-profile ( 31 ), which at least partially a longitudinal strut ( 30 ) of the work platform ( 10 . 10a ) from below embraces. Side protection railing according to one of claims 1 to 10, characterized in that the U-profile of the suspension profile ( 19 ) an upwardly open receiving opening ( 38 ) forming a longitudinal leg ( 30 ), which is fixed to the work platform ( 10 ) connected is. and that in the area of the longitudinal leg ( 30 ) of the fastening bolts ( 23 ) is arranged, with its bolt-side end in the upwardly one-sided open recess ( 27 ), which in the region of the thigh ( 32 ) of the U-profile ( 31 ) is arranged. Side protection railing according to one of claims 1 to 11, characterized in that a suspension of the side guard railing ( 11 . 12 ) is possible only when the work platform ( 10 ) of their connection with the sprouts 4 is removed. Side protection railing according to one of claims 1 to 12, characterized in that on the working platform ( 10 . 10a ) round baseboards ( 34 . 35 ) are hinged at their ends by hinges ( 37 ) are pivotally connected together and a folding box ( 36 ) form. Side protection railing according to one of claims 1 to 13, characterized in that the longitudinal strut ( 13 ) of the side protection railing forms the handrail of this railing.

Images