FR2505284A1 - WAGON-CRANE WITH A MOBILE COUNTERWEIGHT DEVICE - Google Patents

Abstract

1. A crane wagon provided with a platform and a movable counter weight device (6), wherein said counter weight device (6) is mounted underneath the platform at the level of the crane and is movable in a direction perpendicular to the track, so that in its extreme positions, said counter weight device does not engage the circulation clearance gauge of the wagon.

Description

The invention relates to wagons-cranes used for handling and

  installing bulky equipment such as turnouts, deck decks, etc.

  The cranes of these wagons work perpendicularly

  This results, in load, an undesirable tilting movement of the platform of the wagon, since

  for reasons of stability and safety, it is necessary

  the platform is parallel to the track plan.

  Currently, to obtain this parallelism, we

  empirically blocks the platform from

  or bogies by manually placing shims between

axles o bogies and the platform.

  On the other hand, in known wagon-cranes, we are obliged to increase the range of cranes in function

  load, to add, in opposition to the arrow,

  weights that engage the circulation gauge.

  The present invention aims to provide improved means for ensuring the parallelism of the platform

  depending on the load carried by the crane (s)

  both within the limits of the circulation gauge.

  According to the invention, under the platform of the wagon, at the level of the crane, is mounted a displaceable counterweight according to

  a direction perpendicular to the track.

  According to a preferred characteristic of the invention,

  the counterweight is slidably mounted in thin slides

under the wagon platform.

  According to another characteristic of the invention, the displacement of the counterweight is controlled by a worm

  driven in rotation by a geared motor.

  Other features and advantages of the invention

  The following description will emerge from the following description,

  non-limiting embodiment of a wagon according to the invention.

  The description will be made with reference to the drawing

  attached which represents a partial schematic sectional view of a wagongrue according to the invention taken transversely

compared to the platform.

  The crane car according to the invention is constituted by

  a platform 1 mounted on two axles or bogies not shown

  Said platform carries at least one crane 2, mounted

  on a turret 3 and equipped in the usual way with a counter-

  weight 4 The wagon is on rails 5.

  Under the platform 1, at the crane 2 is disposed a counterweight 6, which can move transversally

  compared to the track from one side to the other of the platform

  form 1 (arrow A) For this purpose, the counterweight is mounted

  on slides 7 The movement of the counterweight is controlled by

  by a worm 8, driven in rotation by a

geared motor 9.

  The counterweight can be moved from a position

  neutral center, shown in dotted lines to two

  extreme conditions on either side of the platform.

  shape, without engaging the clearance gauge.

  This characteristic is particularly advantageous

  because it ensures absolute safety in the use of

the machine.

  The use of a mobile counterweight, in addition to the fact that it removes the obligation to block the platform

  on axles or bogies, can considerably increase

  load of the crane, depending on its range.

  As an indication, this increase is illus-

  in the table below for the displacement of a counterweight of 11 t, over a distance of 1 m,

its neutral position.

  range in meters 3.5 4 4.5 5 5.5 6 Loads, counterweight in neutral position 17 t 15 t 13.3 t 12 t 10.8 t 9.8 t Loads, counterweight moved from 1 m 23 t 20, 3 t 18 t 16.2 t 14.6 t 13.2 t

Claims (4)

  1 crane wagon characterized in that, under its platform, at the crane, is mounted a counterweight   displaceable in a direction perpendicular to the track.   2 crane car according to claim 1, characterized in that the counterweight is mounted on runners   transversely fixed under the platform of the wagon.   3 crane car according to claim 2, characterized   in that the movement of the counterweight takes place from a neutral central position towards one   either side of the platform.   4 crane car according to any one of the   previous indications, characterized in that in its posi-   In extreme cases, the counterweight does not engage the is circulation of the wagon.   A crane car according to any one of the preceding claims, characterized in that the movement of the counterweight is controlled by a worm gear driven in rotation by a geared motor.