FR2810950A1 - Frame for testing couplings of train at rest comprises mobile support frame on which carriages rest which allows them to be moved horizontally or vertically to extreme positions encountered during running - Google Patents

Abstract

The frame for testing the couplings of a train at rest comprises a mobile support frame on which the carriages rest. This allows them to be moved horizontally or vertically to the extreme positions encountered during running.

Description

- 1 - The present invention relates to a device allowing

  the observation of the articulations of an articulated vehicle.

  Articulated vehicles - also called trainsets - are made up of cars - or boxes - some or all of which rest on load-bearing elements. They are interconnected by joints. These must allow the whole to circulate on the allotted route. This layout presents: - in plan, more or less pronounced curves - in profile, along the flat parts, ramps, slopes which are linked together by more or less important radius connections. The articulated vehicles are of various types: let us cite a few without this list being exhaustive: - cars mounted on bogies cars mounted on bogies with common bogie for two boxes which gives a set of X boxes on X + 1 bogies - cars with rigid wheelbase or with associated bogies, with one or two semi-trailer bodies - cars with rigid wheelbase or with bogies linked together by bodies without carrying element called bridge bodies, which gives a set of X carrying bodies with X-1 bridge crates, any other

  combination that can benefit from the device described below.

  Among the articulated vehicles: classic trains, T.G.V.

  , metros of all types, trams and derivatives, buses, trolleybuses, trucks and in general all vehicles which,

  given their length, cannot be rigid.

  Trains and T.G.V., given the speeds used, have travel profiles where the joints have less working angles

important.

  Wheeled vehicles are more maneuverable and can be

position without big problems.

  There are still metros, trams and certain trolley-buses - rail guidance At the depot or in the workshop, the trains are stationary, horizontal and most often in a straight line; it is therefore not possible to check the joints in their service positions. These must however be subject to regular checks with maintenance, repair if necessary, cleaning as well as all interventions necessary for the

good performance of the whole.

  The present invention makes it possible to remedy this state of affairs. It essentially consists in deforming the train when stopped so as to replace the joints in the extreme positions encountered in service. For this, a carrier element - or more - is placed on one - or more - mobile support in space. We will call this support "chassis" This chassis is moved in space, right, left, down, up. These movements can be simple, successive and also synchronized. according to the profile of the course, the arrangement of o10 load-bearing elements, the displacements will be calculated in order to find

  the extreme positions encountered in service.

  Given the many combinations that can be encountered in the design of articulated trainsets, it is not possible to

describe a standard realization.

  As an example, we will take the simplest case, that is to say two boxes on three load-bearing elements; there is only one

  articulation in the middle, at the level of the central support element: figure 1.

  The train has two boxes C1 and C2, the three bogie pivots of which are A B C. The movement of the chassis ch brings B to B ', the pivots A and C come closer and come to A' and C '; The arc passing through the points A 'B' C 'corresponds to the radius of curvature R. The arrow f, that is to say the displacement of the frame is to be determined as a function of the radius R

  minimum encountered on the network and the distance AB or BC.

  If the network has large slopes, it may be useful to check the joints on the vertical plane. It suffices then that the chassis has a device making it possible to lower or raise the or

load-bearing elements.

  The chassis can therefore be: - simple, that is to say with only the lateral displacement in FIG. 2 - combined, that is to say with, in addition, the vertical displacement in FIG. 3 We can also consider making a tall chassis allowing an observer take a seat there to observe the behavior of

  joints during operation Figure 4.

  Note that in the case of vertical displacement, there is also

  approximation of pivots A and C but in a lesser proportion.

  The device thus described has a few points to be observed in order to obtain correct operation: - the assembly must be on a horizontal plane, failing which there would be parasitic forces which would have to be overcome, - 3- - the vehicle must be free any braking; indeed, the displacement of B brings together points A and C - Figure 1 - In the event of large displacement f or very heavy vehicles, it might be necessary to help bring points A and C closer together, the two movements in front then be synchronized. - the supporting element (s) which are on the chassis must be blocked by any suitable device in order to avoid any false maneuver. On board 3 are represented some other possibilities of 1o realization according to the design of the oars: figure 5 - large central box C2 on two bogies with extreme boxes in semi-trailers, on bogie, figure 6- small central box C2 with wheelbase short and rigid with extreme boxes in semi-trailers on bogie, Figure 7- 3 ABC carrying boxes with short and rigid wheelbase connected by two bridge boxes A 'C'. Bridge boxes can be longer or shorter, length varying according to the minimum curves of the route. For this type of train, it is necessary to determine the angle made by the different boxes between them and move the chassis so as to

find the angle 0.

  Special case: train consisting of a box with rigid load-bearing elements with one or more boxes in a semi-trailer with rigid axle; if the radii of curvature are small enough, then it will be necessary to place a rigid turntable under the rigid axles so as to follow the movements of the chassis without causing jamming. Conclusion: each articulated train, by its design, is particular; it will therefore be necessary to adapt the present device to the configuration of the train, the principle always remaining the same "deform the train when stopped, so as to replace the joints in

  the extreme positions encountered in service ".

  Note: it is further specified that the following do not fall within the scope of the present invention - the mode of locomotion of articulated trains, - the composition of the trains, - the design of the load-bearing elements, - the types of articulations connecting the boxes , - the devices used to obtain the different movements described above, - the situation of the realization of this device: level, raised,

in pit or any other design.

4 2810950

Claims (1)

CLAIM   Deformation device for an articulated vehicle when stationary, during its maintenance, with the aim of replacing the articulations in the extreme positions encountered in service, characterized in that it comprises one or more mobile support (s) ) on which one or more support element (s) of the vehicle rests, the support (s) is   moving in the horizontal plane and / or in the vertical plane.