DE202008010622U1 - Handrail for work platforms and aerial work platforms with a folding mechanism for raising or lowering - Google Patents

Abstract

Railing for aerial work platforms with a folding mechanism for raising or lowering,
characterized in that
the railing is formed as a frame, this is composed of railing support and cross tubes and the railing support tubes
Have at least one clearance-free folding mechanism, which is fastened to a platform by means of a support element and connected via a pivot point to the foot part of the railing support tube,
• have at least one tilting turnbuckle with a hanger or hook as well as a safety catch and a hook attached to the foot part as well as at least one stop.

Description

in the As a rule, working platforms of any type are included provided solid railings that run at best pluggable are so that the railing after the use of the work platform pull out. However, work platforms are also known, where it is possible to swing the railings or to fold.

Such a work platform with plug / foldable railing is for example from the DE 87 03 294 known, wherein a fixed, shell-like lower part is provided with circumferential side walls to form a Fußschutzraumes and the railing-like other parts of the barrier are pluggable or pivotally connected to the lower part.

From the DE 30 38 893 C2 a handrail for a heliport is known, which is pivotable by hand in a plurality of positions and lockable to a platform, wherein on each frame at least one support is articulated, which is connected at its other end rotatably connected to the platform and the support a support connection with three eyes, at the top and middle of a first strut and at the bottom eye a second strut are releasably articulated, wherein the second strut is releasably secured to the platform and the locking of the struts is provided on the support connection by means of prongs. The disadvantage of the solutions listed for the locking of the railing is that they are not free from a certain play.

Of the Invention is based on the object, a folding railing in the erect state (working position) so firmly with the platform to connect that it has virtually no horizontal play anymore.

• • mindestens einen spielfreien Klappmechanismus aufweisen, der an einer Plattform mittels eines Stützelementes befestigt sowie über einen Drehpunkt mit dem Fußteil des Geländerstützrohres verbunden ist,
• • mindestens ein kippbares Spannschloss mit einem Bügel oder Haken sowie Sicherung und einen am Fußteil befestigten Spannhaken sowie mindestens einen Anschlag aufweisen.

This is achieved according to the invention by
the railing is formed as a frame, this is composed of railing support and cross tubes and the railing support tubes

• Have at least one clearance-free folding mechanism, which is fastened to a platform by means of a support element and connected via a pivot point to the foot part of the railing support tube,
• • have at least one tilting turnbuckle with a hanger or hook as well as a safety catch and a hook attached to the foot part as well as at least one stop.

By the determination of a distance between the pivot point of the railing and the turnbuckle with a hanger or hook and fuse and a tension hook can be created by the resulting support base the forces acting on the railing safely in the work and access platforms are initiated.

At the Foot part of the railing support member are preferably arranged two stops. The one stop located at the foot protection edge of the platform; the other Stop is located on the platform floor.

The Railing can also be a folding mechanism preferably have at the height of a railing cross tube. The Railing support tube is then at this height divided or separated executed and points at the separation point on the folding mechanism a hinge with a folding area aligned Fulcrum on.

At the upper part of the separate railing support tube is a tiltable turnbuckle with a bracket or a hook and at its lower part a tension hook and a Stop arranged.

By the determination of the pivot point is formed below the transport position deposited railing a cavity into which another frontally mounted on the working and aerial work platform hinged Railing folded down to save space and stored can.

Advantages of the invention:

• - The railing is hinged and executed very stable without horizontal play
• - Occupational safety is increased
• - The platform can in transport position be moved without restrictions
• - The railing is easy and quick to fold out
• - there will be no bolts, pins or other problematic Locking solutions used
• - By using turnbuckles with Fuse becomes a high degree of security against mishaps reached

The The invention will be further described by way of example explained.

there demonstrate:

1 : a hinged railing according to the invention in side view and cross-section with representations "railing in working position" and "railing in transport position"

2 : a detail of the folding railing behind 1 - side view

3 : a detail of the folding railing behind 1 with the representation "railing in working position" - cross section

4 : a detail of the folding railing behind 1 with the representation "railing in transport position" - cross section

5 : a hinged upper part of a railing in side view and cross section with representation "railing in working position" and "railing in transport position"

6 : a detail of the foldable shell of a railing - side view

7 : a detail of the hinged upper part of a railing with the representation "railing in working position" - cross-section

8th : a detail of the hinged upper part of a railing with the representation "railing in transport position" - cross section

A foldable railing is located on the platform ( 1 ). It is rotatably mounted below the Fußschutzrandes. The pivot point of the foldable railing ( 3 ) is shifted in the direction of the railing shelf. After erecting the railing, the lock with security ( 4 ), which is in a hook ( 5 ) hooked and braced. The railing support tube ( 2 ) against the attack ( 6 ) at the foot protection edge or the stop ( 7 ) on the platform floor ( 1 ). The lock with fuse ( 4 ) and the hook ( 5 ) are arranged so that they are as far as possible from the pivot point of the foldable railing ( 3 ) to have.

To lower the foldable railing, the clamp with safety ( 4 ) relaxed and out of the hook ( 5 ) unhooked.

If the foldability of the railing is desired only for the upper part of the railing, the railing support tube ( 8th ) executed shared and a hinge ( 9 ) is inserted at the separation point with a fulcrum shifted to the folding area. After erecting the upper part of the rail, the lock with safety lock ( 10 ) in the hook ( 11 hooked). The lock with fuse ( 10 ) is tense. The hinge presses ( 9 ) against the attack ( 12 ).

To fold down the upper part of the handrail, the locking latch with safety catch ( 10 ) relaxed and out of the hook ( 11 ) unhooked.

1

platform

2

Railing support tube

3

pivot point

4

Lever Release with fuse

5

Ironing / hook

6

attack

7

attack

8th

upper Part of the railing support tube

9

hinge

10

Lever Release with fuse

11

Ironing / hook

12

attack

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 8703294 [0002]
• - DE 3038893 C2 [0003]

Claims (9)

Handrail for working and aerial work platforms with a folding mechanism for erecting or storing, marked as a result of that the railing formed as a frame is, where this from railing support and transverse tubes and the railing support tubes • at least a play-free folding mechanism, which on a platform fastened by means of a support element and via a pivot point with the foot part of the railing support tube connected is, • at least one tilting turnbuckle with a hanger or hook as well as a fuse and one on the foot part have attached clamping hook and at least one stop. Railing according to claim 1, characterized by that the railing support tubes a folding mechanism preferably at the height of a railing cross tube exhibit. Railing according to claim 2, characterized by that the railing support tube split / run separately is. Railing according to claim 2 and 3, characterized in that the railing support tube at its Separation point on the folding mechanism a hinge with a folding area aligned fulcrum has. Railing according to claim 2 to 4, characterized in that the split / separate railing support tube at its upper part a tiltable turnbuckle with a bracket or a hook and at its lower part a tension hook and has a stop. Railing according to claim 2 to 5, characterized in that between the hinge and the turnbuckle with bracket or hook and the hook a horizontal distance to create a Support base is set. Railing according to claim 1, characterized by that at the foot of the railing support tube a Stop at the foot protection edge and another stop on the platform floor is arranged. Railing according to claim 1, characterized by that the horizontal distance between the play-free folding mechanism and the turnbuckle with a hanger or hook and a tension hook to choose so that thereby a support base arises. Railing according to claim 1 to 9, characterized in that below the stored in transport position railing by choosing the pivot point, a cavity is created in the one another front side at the working and aerial work platform folded down railing is to fold down to save space.