DE202006010625U1 - Module platform is for assembly and maintenance of aircraft and its height-adjustable work plane constitutes a work platform - Google Patents

Abstract

The height-adjustable module platform has a horizontally extending work plane (2), beneath which are supports in the form of telescopic tubes (4). These tubes are height-adjustable and by means of a device can be secured in a required position. The height-adjustment device comprises at least one hydraulic lift cylinder (6) and the securing device is constituted by a ratchet arrangement.

Description

The The invention relates to a height-adjustable module stage with a substantially horizontally extending working plane and on the underside provided at the working level supports, wherein the work plane above a height adjustment device height adjustable and locked by means of a locking device in nominal positions is.

such module platforms are used, for example, for maintenance and installation of aircraft. The height-adjustable Working level provides a working platform for workers ready. Usually is the entire module stage also designed to be rollable.

The height adjustment occurs in known modular stages via spindle drives, in telescopic columns are integrated. Since the four telescopic supports of the module platform are evenly in the Height to be adjusted have to, this is associated with a complex mechanics. Despite use a self-locking spindles must nevertheless one as a pin safety trained locking device may be provided to the module platform in selected nominal positions to comply with the relevant safety standards.

The The present invention therefore deals with the technical Problem, a generic module stage easier and cheaper to train, at the same time, however, to continue to guarantee a high level of occupational safety.

According to the invention this at a module stage of the type mentioned achieved in that the height adjustment at least a hydraulic lifting cylinder and the locking device a Includes latch safety.

The use according to the invention the hydraulics is much easier to control than the synchronous drive of several spindles. The latch safety device ensures a reliable one Locking the telescopic supports in the respective target positions. Preferably, the telescopic supports are made one - outer and immovable - guide tube and a relative to this movable telescopic tube.

The Latch securing preferably comprises a formed on the slider Crossbar for receiving the axis of rotation for the one pawl and one on the axis of rotation rotatably mounted pawl, which via a power cylinder to the axis of rotation is pivotable. The power cylinder can either directly attack on the pawl or on the axis of rotation.

Especially advantageous is the training as a double pawl, with both sides on the traverse attacking axes of rotation, each with a pawl are formed in the installation position laterally through an opening of the guide tube in corresponding positioning openings engage in the telescopic tube. Preferably, this double pawl controlled by a common power cylinder, both latches synchronously.

safety-related Particularly advantageous is the training of the pawl according to the "dead man principle", wherein the pawl remains in the locked position in case of failure of the power cylinder and only upon application of force to the power cylinder of the telescopic tube releases.

Especially advantageous is the formation of the power cylinder as a hydraulic cylinder.

In the preferred embodiment has the module stage several supports each with a lifting cylinder and a respective latch safety on.

The Invention will be described below with reference to a preferred embodiment described, with reference to the reference numerals. In these demonstrate:

1 a perspective view of the module platform according to the invention;

2 an enlarged view of the double pawl according to the invention in the open position; and

3 the double paw according to 2 in closed position.

Same or equivalent parts are provided with the same reference numerals.

Accordingly, the module platform according to the invention consists of a horizontally extending working plane 2 , which forms a working platform for workers and is provided on the upper side with a surrounding railing.

The present module stage has a lenght of 8 meters, a width of 4 meters and a minimum height of 4.5 Meters. She lets up to a height of 6.3 meters. The work platform has a maximum Payload of 6.65 tons.

Each at the bottom of the corners of the working plane 2 extend from vertical profiles existing square profiles 4 down and have at their lower ends lockable wheels 12 on.

Also at the bottom of the Vertikalstüt zen is each vertical support associated with a hydraulically operated lifting cylinder 6 arranged.

One at the bottom of the work plane 2 trained support work 10 is with telescopic tubes 4 connected, which in a guide tube 8th running through lifting cylinder 6 are height adjustable.

The construction of a telescopic support with the latch safety device is detailed in 2 shown. Accordingly, there is the guide tube 8th from a square profile, which has a slightly larger outer diameter than the telescopic tube 4 having. On the front and the back of the telescopic tube 8th are two rectangular crossbeams 14 attached, which at their outer ends in aligned holes pivot axes 16 rotatably pick up. Between the crossbars 14 is on each pivot axis 16 one pawl each 18 rigidly attached. These latches 18 will be out of the 2 shown dissolved position spent in a locking position by relieving a hydraulic cylinder 20 which is between two levers 22 extends to the front sides of the pivot axes 16 are torsionally rigid attached.

The latches 18 engage in the latched rest position through an opening in the outside of the guide tube 8th in corresponding detent opening in the sides of the telescopic tubes 4 and thus engage the pawl in the desired position desired in each case form-fitting manner. Along the longitudinal axis of each telescopic tube 4 are at regular intervals several such pairwise detent openings provided in which the pawls 18 can engage in different heights for locking.

The Doorknob works on the "dead man principle", leaving a failure the hydraulic units lock the pawls in the locked position.

Of the The subject of the present invention is not exclusive the subject of the individual claims, but from the combination the individual claims among themselves. All in the documents, especially those in the drawings illustrated spatial Training are claimed as essential to the invention, as far as they are individually or in combination over the prior art new are.

2

working level

4

telescopic tube

6

lifting cylinder

8th

guide tube

10

falsework

14

crossbeam

16

swivel axis

18

pawl

20

hydraulic cylinders

22

lever

Claims (5)

Height-adjustable module platform with a working plane extending substantially horizontally ( 2 ) and supports provided at the working level at the bottom, the working plane ( 2 ) is adjustable in height via a height adjustment device and can be locked in a set position by means of a locking device, characterized in that the height adjustment device comprises at least one hydraulic lifting cylinder ( 6 ) and the locking device comprises a latch safety device. Modular platform according to claim 1, characterized in that these four supports each with a lifting cylinder ( 6 ) and in each case a latch safety device. Module platform according to one of the preceding claims, characterized in that the latch safety device on a guide tube 8th is trained. module stage according to one of the preceding claims, characterized that the latch safety is designed as a double pawl. Modular platform according to claim 4, characterized in that the double pawl by a hydraulic cylinder ( 20 ) is controllable.