GB2288380A

GB2288380A - Work wagon with multi-adjustable working platform

Info

Publication number: GB2288380A
Application number: GB9506538A
Authority: GB
Inventors: Josef Theurer; Leopold Rudolf Gruber
Original assignee: Franz Plasser Bahnbaumaschinen Industrie GmbH
Current assignee: Franz Plasser Bahnbaumaschinen Industrie GmbH
Priority date: 1994-04-11
Filing date: 1995-03-30
Publication date: 1995-10-18
Anticipated expiration: 2015-03-30
Also published as: SK33795A3; FR2719541B1; DE19511539B4; SK280504B6; DE19511539A1; GB9506538D0; CZ62595A3; CH690769A5; GB2288380B; AT406359B; FR2719541A1; ATA73594A; CZ280996B6

Description

A WORKING WAGON WITH A WORKING STAGE 2288380 The invention relates to a

working wagon with a wagon frame supported on on-track undercarriages and a working stage with a supporting frame which has a horizontal working platform and which is designed for vertical adjustment relative to the wagon frame by means of drives, the working platform being variable by means of platform portions which are adjustable relative to one another in the platform plane and are mounted on the supporting frame.

A working wagon of this kind which has a wagon frame mounted on on-track undercarriages is shown in an advertisement in the journal Railway Gazette International of September 1989, page 580. on this wagon frame is mounted a supporting frame - designed for vertical adjustment in the manner of an extending elevating stage forming a working stage with a horizontal working platform, the supporting frame lying entirely within the clearance gauge during transfer travel. In operation, the working stage is extendable in the transverse direction of the track by means of telescopically extendable platform portions and thus the horizontal surface of the working platform can be enlarged so as to provide the track construction workers with access to the areas further away from the track centre during overhead line installation work, for example.

Another working wagon is known from EP 0 003 727 B which describes an ontrack vehicle with a vertically adjustable and rotatable jib arm and a working stage fixed to the end thereof. Provided independently of this in the roof area of the wagon superstructure is a fixedly mounted, horizontal supporting frame on which two working platforms are arranged. These extend in the manner of gangways along the two longitudinal sides of the vehicle and are pivotally connected to the supporting frame by means of guide rods in such a way that with the aid of drives they are pivotable upwards and simultaneously with one another about axes extending in the longitudinal direction of the wagon from a transfer position adjoining the wagon superstructure, as a result of which, in operation, they jointly form a working stage or working platform which is positioned so as to be elevated at a fixed distance away from the wagon superstructure. However, this working stage is only of limited suitability for use in overhead line installation work because of the absence of a vertical adjustment f acility.

The object of the invention is now to provide a working wagon of the type specified in the introduction, which, while largely retaining the known basic constructional design of working stages, permits more flexible working use thereof specifically for overhead line installation work.

This object is achieved with a working wagon of the t type previously defined in that at least two platform portions, situated opposite one another in the transverse direction of the wagon, are adjustable by means of transverse displacement drives fixed to the supporting frame from a first working position adjoining one another and forming a combined working stage into a second working position spaced apart from one another in the transverse direction of the wagon and forming respective separate auxiliary working stages.

A design of this kind ensures substantial broadening of the range of applications and at the same time an improvement in the working conditions for the workmen employed in the overhead line installation work. The two auxiliary working stages which are adjustable independently of one another may be positioned, for example, on either side of the track axis at a distance apart which corresponds to the maximum zigzag of the catenary. This not only creates the most advantageous working conditions ergonomically as the entire area of use is easily reachable particularly for fixing a carrying cable, but it also has time-saving consequences as far as the work procedure is concerned, in which the constant repositioning of the working stage is now unnecessary. On the other hand, however, the two auxiliary working stages can also be positioned side by side or combined with one another to form a larger platform or a combined working stage if the conditions of use require this.

Other advantageous developments of the invention emerge from the subclaims.

The invention is described in more detail below with the aid of the exemplary embodiments shown in the drawings, in which Fig. 1 shows a side view of a working wagon according to the invention with a specially designed working stage situated in a working position, Fig. 2 shows a plan view of the working wagon shown in Fig. 1, Fig. 3 shows a view of the working wagon in the longitudinal direction of the track shown by arrow III in Fig. 1, and Fig. 4 and 5 show schematized plan views of other variants of the working stage.

The working wagon 1 shown in Fig. 1, 2 and 3 has a wagon frame 2 which is supported by means of on-track undercarriages 3 on a track 4. The wagon frame 2 is provided at its two longitudinal ends with buffers 5 and drawgear 6 to allow the working wagon 1 to be incorporated in a train formation during transfer travel. A power source 8 which is arranged beneath the wagon frame 2 provided with a continuous walkway 7 provides for the mobility of the working wagon during use at the worksite and at the same time provides the energy supply for the various drives (to be described) of the working wagon 1.

On the wagon frame 2 is fixed a working stage 9 c -c- - r,- which has a supporting frame 10 oriented parallel to the wagon frame 2 and track plane respectively. This supporting frame 10 - rectangular in cross-section - is supported on the wagon frame 2 by means of four vertical columns 11 arranged in each corner region of the supporting frame 10, the said columns being designed as telescopically extendable screw spindle drives 12. The mechanically interconnected screw spindle drives 12 may be operated synchronously with the aid of the power source 8 and serve for precise vertical adjustment of the working stage 9 and of a horizontal working platform 13 provided on the supporting frame 10 and forming the base surface of the working stage 9. This working platform is composed of two platform portions 14,15 situated opposite one another in the transverse direction of the wagon and adjoining one another and an additional platform portion 16 fixedly joined to the supporting frame 10 and adjoining the two platform portions 14,15 in the longitudinal direction of the wagon. Each platform portion 14,15 is designed for vertical adjustment relative to the supporting frame 10 by means of its own vertical adjustment drive 17 and thus forms a separate auxiliary working stage 18,19.

Each vertical adjustment drive 17 is fixed in a vertically extendable telescopic guide 20. As is shown particularly in Fig. 2 and 3, this is transversely displaceable with the aid of rollers 21 on a horizontal transverse guide 22 fixed on the supporting frame 10 at right angles to the longitudinal direction of the wagon by means of transverse displacement drives 23.

A railing 24,25,26 enclosing each auxiliary working stage 18,19 and also the additional platform portion 16 is fixed so as to be detachable or tiltable in each of the mutually adjoining end regions of the platform portions 14,15 and 16.

The working stage 9 shown in Fig. 1 to 3 in solid lines is in a lowered first working position in which all the platform portions 14,15 and 16 form a single working stage 9 in order to form a combined, large working platform 13. In this state the parts of the railings located at the mutually adjoining ends of the platform portions may optionally be removed. This will only be expedient in practical use when the largest possible working platform 13 is needed for certain operations. It may if required be adjusted in height by operation of the screw spindle drives 12. A ladder 41 arranged at the end automatically adapts to the changed vertical position.

The two auxiliary working stages 18,19 now advantageously enable the individual platform portions 14,15 to be moved, to adopt a second working position as it were, located at a distance from the additional platform portion 16, to a different height level by operation of the vertical adjustment drives 17. At the same time, however, by operation of the two transverse displacement drives 23, the distance between the two auxiliary working stages 18,19 h, Z in the transverse direction can also be changed (see dot and dash lines in Fig. 3). This enables work to be done on an electric overhead line on both longitudinal sides at the same time in a working position which is comfortable for the workmen. Expediently, the distance between the two auxiliary working stages 18,19 should therefore be somewhat greater than the maximum distance of the overhead line from the track axis produced by the zigzag. All in all, the three-part construction of the working stage 9 results in a considerably improved facility for adapting to different working heights and conditions. Alternatively, the working stage 9 may also be fixed, instead of on the columns 11, on a crane jib of the known type, for example, which is telescopically extendable and rotatable about a vertical axis.

So that the individual drives 12,17 and 23 can be controlled independently of one another, control means 27 are provided both on each auxiliary working stage 18,19 and on the additional platform portion 16. As indicated in Fig. 3 by a line 28 depicting the clearance gauge, the working stage 9 in the fully lowered state of the supporting frame 10 and of the two auxiliary working stages 18,19 is within the clearance gauge, so that in this lowered position, transfer travel may be freely undertaken.

The variant of a working stage 9 according to the invention indicated schematically in Fig. 4 differs from those described above in that each auxiliary working stage 18,19 is mounted on the telescopic guide 20 so as to be rotatable by means of its own rotary drive 29 about a vertical axis of rotation 30. The axis of rotation 30 is here situated, with respect to the position of the auxiliary working stage 18,19 extending in the longitudinal direction of the wagon, in the end region of the said auxiliary working stage. Thus, after the pivoting of the auxiliary working stage 18,19 around 900 by means of the rotary drive 29, greater distancing from the wagon centre can be achieved so that work on catenary masts can be also be carried out in this position.

A variant of a working stage 31 shown in Fig. 5 consists of two auxiliary working stages 32,33, which have respective platform portions 39,40 and which are mounted on a supporting frame 36 serving as transverse guide 34 and are transversely displaceable independently of one another with the aid of a drive 35 (the outline of the working stage 31 is shown by dot and dash lines when the two auxiliary working stages 32,33 are in a first working position adjoining one another and forming a combined working platform). The transverse guide 34 and the supporting frame 36 are fixed on a telescopically extendable and vertically adjustable crane jib 38 so as to be rotatable about a vertical axis of rotation 37.

7

Claims

CLAIMS:

1. A working wagon with a wagon frame supported on ontrack undercarriages and a working stage with a supporting frame which has a horizontal working platform and which is designed for vertical adjustment relative to the wagon frame by means of drives, the working platform being variable by means of platform portions which are adjustable relative to one another in the platform plane and are mounted on the supporting frame, wherein at least two platform portions situated opposite one another in the transverse direction of the wagon are adjustable by means of transverse displacement drives fixed to the supporting frame from a first working position adjoining one another and forming a combined working stage into a second working position spaced apart from one another in the transverse direction of the wagon and forming respective separate auxiliary working stages.

2. A working wagon according to claim 1, wherein a separate vertical adjustment drive mounted on the supporting frame is associated with each auxiliary working stage.

3. A working wagon according to claim 2, wherein each vertical adjustment drive associated with an auxiliary working stage is fixed on a telescopic guide which is extendable in the vertical direction and which is mounted for transverse displacement on the supporting frame and is connected to the respective vertical adjustment drive.

4. A working wagon according to one of claims 1, 2 or 3, wherein the working platform of the combined working stage is formed by the platform portions of the two auxiliary working stages and by another additional platform portion adjoining them in the longitudinal direction of the wagon and fixedly joined to the supporting frame.

5. A working wagon according to one of claims 1 to 4, wherein a railing enclosing each auxiliary working stage and also the additional platform portion is fixed so as to be detachable or tiltable in regions which adjoin one another in the first working position so as to create a combined working stage.

6. A working wagon according to claim 3, wherein each auxiliary working stage is mounted on the telescopic guide so as to be pivotable by means of a rotary drive about a vertical axis of rotation.

7. A working wagon according to claim 6, wherein each axis of rotation is positioned in an end region of the associated auxiliary working stage with respect to the longitudinal direction of the wagon.

8. A working wagon according to one of claims 1 to 7, wherein a total of four vertical columns, extendable telescopically by means of screw spindle drives, are provided for the support and vertical adjustment of the supporting frame, the screw spindle drives being mechanically interconnected and operable synchronously.

3 - 1 1 -

9. A working wagon according to claim 1, wherein the two auxiliary working stages are respectively mounted on a horizontally extending supporting frame so as to be displaceable transversely by means of a drive, the supporting frame itself being fixed on a telescopically extendable jib.

10. A working wagon substantially as herein described with reference to Figures 1 to 3 or Figure 4 or Figure 5.