EP1981797B1 - Chassis for a cable or pipeline trolley - Google Patents

Abstract

The invention relates to a chassis (1) for a cable or pipeline trolley (2), for traveling along a carrier rail, the chassis including at least one pair of carrier rollers (3) having a horizontal axis of rotation and at least one pair of guide rollers (4) having a vertical axis of rotation. The disadvantage of known chassis of this type is that they jolt at uneven sections of the carrier rail and a significant supply of replacement parts is required for repairs. The aim of the invention is to develop a chassis with improved driving characteristics, whilst at the same time reducing production and inventory costs. To achieve this, the carrier rollers (3) and guide rollers (4) are essentially arranged symmetrically to a vertical axis.

Description

The invention relates to a chassis for a cable trolley for the process along a mounting rail according to the preamble of claim 1 and a cable trolley equipped with such a chassis.

A cable car, which includes such a chassis is the subject of EP 0505016 A1 , of the DE 44 36 520 C1 and also the DE 44 36 519 C2 as well as the DE 26 28 112 C2 , Corresponding cable car find, for example, in towing line devices use or crane jibs, so in all applications in which power and / or gas-carrying lines along a rail to a mobile consumer, eg. B. a trolley of a crane, must be performed. The cited documents describe both passive cable trolleys, ie those without their own drive, as well as active cable trolleys, ie those with their own drive.

The cable trolleys usually consist of three main elements, namely the or the trolleys, the middle part or center plate and the actual suspension for the cables to be transported. The trolleys hang on usually double T-shaped rails, which are also referred to as I-beam. At the bottom of the trolleys, the support plate is attached, on its underside, in turn, the actual suspension for the cables to be transported is attached. As a rule, a cable trolley with two trolleys or a chassis, consisting of four side plates, equipped. Each of which has a pair of support rollers, which move opposite each other and with a substantially horizontal axis of rotation on the support rail and absorb the weight. Furthermore, each chassis has a pair of opposing guide rollers with a substantially vertical axis of rotation, which are dimensioned weaker than the support rollers, since they do not have to take the weight of the festoon carriage, but only serve the guide along the vertical center leg of the I-shaped mounting rail. In all known trolleys for cable trolleys each a support roller and a guide roller is arranged on a support plate and the two support plates are screwed together. For reasons of symmetry, therefore, each support plate must be configured mirror-symmetrically to the other support plate, so that two different carrier plates must be produced and kept in stock, namely a left and a right.

Furthermore, the known from the prior art suspensions for cable trolleys have the disadvantage that they bump in unevenness in the support rail, because both support rollers pass the unevenness at the same time. In addition, the leadership of these known trolleys on the mounting rail is not optimal, since the guide rollers must be arranged offset to the support rollers.

There is therefore the task of developing a chassis for a cable trolley and equipped with such a chassis trolley so that better driving characteristics are achieved, at the same time a cost reduction in production and storage should take place.

This object is achieved with the characterizing features of claim 1. Advantageous embodiments are the dependent claims 2 and 3 can be removed. A equipped with a chassis according to the invention cable trolley according to claim 4.

Fig. 1:

Eine Seitenansicht eines Leitungswagens mit zwei erfindungsgemäßen Fahrwerken;

Fig. 2:

eine Vorderansicht des in Figur 1 dargestellten Leitungswagens;

Fig. 3:

eine Ansicht des in den Figuren 1 und 2 dargestellten Leitungswagens von oben;

Fig. 4:

ein Fahrwerk, wie es in dem in den Figuren 1 bis 3 dargestellten Leitungswagen verwendet wird;

Fig. 5:

eine Darstellung des Fahrwerks gemäß Figur 4 von vorn; und

Fig. 6:

eine Darstellung des Fahrwerks gemäß Figuren 4 und 5 von oben.

An embodiment of the invention will be explained in more detail below with reference to the accompanying drawings. These show:

Fig. 1:

A side view of a Festive carriage with two trolleys according to the invention;

Fig. 2 :

a front view of the in FIG. 1 illustrated Festive carriage;

3:

a view of the in the Figures 1 and 2 illustrated festoon from above;

4:

a suspension, as in the in the FIGS. 1 to 3 illustrated cable trolley is used;

Fig. 5:

a representation of the chassis according to FIG. 4 from the beginning; and

Fig. 6:

a representation of the chassis according to FIGS. 4 and 5 from above.

The in the FIGS. 1 to 3 illustrated cable trolley (2) consists of a central part or center plate (9) which connects two carriages (1) with a support device (10) for the transportable (not shown) electricity and / or gas lines. To the In the direction of travel opposite ends, the center plate (9) cell buffer (11), which act in a collision impact of adjacent cable trolleys and form a shock buffer. On its upper side, the middle plate (9) in the illustrated embodiment 2, in the direction of travel successively arranged trolleys (1). These trolleys (1) are identical and formed in the FIGS. 4 to 6 shown in detail.

Each chassis (1) has two mutually opposite support plates (6) and (7) made of steel or possibly of a suitable plastic, which are tapered downwards in plan view and have in its lower region a plurality of connecting holes (12), through which screw connections (13) are guided in order to connect the two support plates (6) and (7) with each other, as best of all FIG. 5 is apparent. At their upper region, the two support plates (6) and (7) each carry a support roller (3) with a substantially horizontal axis of rotation and a guide roller (4) with a substantially vertical axis of rotation.

However, the two support rollers (3) in the bolted state of the two support plates (6) and (7) are not arranged opposite to each other, nor the guide rollers (4). Rather, the left carrying roller (3) of the right guide roller (4) opposite and the right carrying roller (3) of the left guide roller (4) as in the FIGS. 4 to 6 is apparent, in particular in FIG. 6 , In contrast to the known from the prior art suspensions the arrangement of the support and guide rollers (3) and (4) is therefore not mirror-symmetrical to a plane along the support rail (not shown), but rather axisymmetric to a vertical axis (5) , which is located approximately in the middle of the chassis (1).

Like from the FIGS. 4 to 6 can be seen so that the two support plates (6) and (7) are formed identical to each other. In other words, there is no difference between the left support plate (6) and the right support plate (7); These are completely interchangeable parts that need to be stocked only once.

In the illustrated embodiment, the chassis (1) on additional support rollers (8) or counter-pressure rollers, which have a substantially horizontal axis of rotation and on the support plates (6) and (7) are arranged. These serve to secure the chassis (1) against lifting off the mounting rail.

However, the suspension according to the invention has considerable advantages over the landing gear known from the prior art, even during operation. Since the support rollers (3) are not offset from each other, but offset in the direction of travel to each other, unevenness of the carrier profile are much better intercepted and compensated, because usually always a support roller (3) rests reliably on the carrier profile. Furthermore, there is an improved guidance of the chassis (1) and thus of the festoon (2) by the direct comparison of support roller (3) and guide roller (4). In addition, there is an improved power flow between the guide rollers (4) and the middle bleaching (9) due to a smaller lateral offset of the force introduction into the center panel. Finally, as an advantage to call the weight reduction by a corresponding reduction in parts and thus lower production costs and lower operating noise. In addition, the assembly and disassembly is simplified due to the smaller number of parts needed and errors in the Monatage avoided because the two support plates (6) and (7) are identical to each other.

Claims (4)

1. Running gear (1) for a cable trolley (2) for travelling along a carrying rail, with at least one pair of carrying rollers (3) which have a horizontal axis of rotation and at least one pair of guiding rollers (4) which have a vertical axis of rotation, characterised in that the arrangement of the carrying rollers (3) and guiding rollers (4) is essentially axially symmetrical in relation to a vertical axis (5), with each carrying roller arranged facing a guiding roller.
2. Running gear (1) according to claim 1, characterised in that it exhibits two carrier plates (6, 7) which are connected to one another and each of which supports a carrying roller (3) and a guiding roller (4), and in that the two carrier plates (6, 7) are identical to one another.
3. Running gear (1) according to one of the preceding claims, characterised in that it exhibits a pair of supporting rollers (8) which have a horizontal axis of rotation and are arranged underneath the carrying rail.
4. Cable trolley (2) for travelling along a carrying rail, characterised by at least one running gear (1) according to one of the preceding claims.

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