DE102006060139A1 - Rail vehicle chassis comprises machine arrangement for mechanical operation of track, supported wheelset and housing encasing wheelset bearing and chassis also has actuator - Google Patents

Abstract

The rail vehicle chassis (1,1') comprises a machine arrangement for mechanical operation of a track, a supported wheelset and a housing encasing the wheelset bearing. The chassis also has an actuator, which moves the wheelset bearing against the housing of the wheelset bearing and carries with the housing for installation. The actuator is designed as a centering actuator.

Description

The The invention relates to a chassis of at least one machine arrangement for mechanical processing of a track having rail vehicle with at least one mounted wheelset and a wheelset bearing enveloping Casing.

The increasing demands on the superstructure of rail traffic routes with regard to increasing line speeds and higher load tons in freight traffic have led to the use of high-strength rail steels with tensile strengths of up to 1500 N / mm ² . Such rail materials are considered extremely difficult machinable. At the same time, however, it is necessary, for reasons of economy, to subject rails whose rail head profile or rail surface to wear to preventive maintenance, so that these irregularities do not result in any serious defects which could shorten the intended service life of the rail. For many years, the technological processes of mobile rail grinding or, for about 10 years, mobile rail milling have been used for this type of maintenance or rail maintenance. The rails are not removed in this case, but remain in the track bed and are profiled in operational lock-up breaks by means of a mobile processing machine or subjected to a removal of surface defects. The technologies of grinding or milling have specific advantages and disadvantages in each case (eg with regard to flying sparks, material removal rates or working speeds). Therefore, one has also moved to work processes in which grinding and milling processes are combined with each other or consecutively run consecutively.

There especially for rail milling higher Material removal rates and thus higher working speeds (i.e., processed rail length per unit of time), it is of particular importance that by the used machine technology no Disturbances in the Processing zone can be induced. For the milling quality it is for example from essential that the feed generated by the rail vehicle very evenly and external influences are suppressed. This also applies to any Repercussions that can result that in the driving regime of the rail vehicle from the milling tool transmitted outgoing vibrations to the vehicle and there, for example, vibrations parallel to the vehicle's longitudinal axis induce.

It is therefore common In such rail mobile working machines rail undercarriages provide, which have no clearance between the wheelset bearing and Radsatzführung. This avoids that dynamic influences the running between the tool and workpiece Processing process repercussions on the drive system or on the rail chassis of the carrier vehicle could have. In the case of a vehicle for rail milling so could the dynamic personnel between the milling tool and the track tightly clamped to the superstructure cause in the standing on the track to be machined and relative to this mobile carrier vehicle Vibrations are induced, which in turn negatively affect the geometric dimensional accuracy of the processes in the processing zone. Such play-free rail bogies However, they are relatively expensive and therefore expensive.

Of the Invention is based on the object, a chassis of at least one a machine assembly for mechanically processing a track having rail vehicle according to the features of the preamble of claim 1, which is opposite to State of the art cheaper is and at the same time a reaction free between the dynamic processes running in the processing zone and the chassis of the rail vehicle guaranteed.

These Task is in connection with the preamble of claim 1 according to the invention thereby solved, that the chassis has an actuator, the wheelset against the housing of the axlebox shifts and brings with this to the plant.

One Such actuator represents an actuator, which signals a regulatory or control device converts into movement or mechanical work. While the processing tools associated with the rail vehicle in use are, gives the rail vehicle associated control device a steep command to the actuator, which thus a linear force on the wheelset guide applies and moves against the wheelset bearing housing. The displacement path is dimensioned so that wheel set guidance and wheelset contact each other. This will be the game between wheelset guidance and wheelset stored. The actor is so measured that he the necessary to maintain the backlash against force the dynamic forces emanating from the machining tools over the Duration of the editing process can be maintained.

It will be understood by those skilled in the art that this force is only for reducing or eliminating the mechanical clearance between Wheelset guide and wheelset bearing housing is dimensioned. However, the functionality of the wheel bearing should not be affected per se; that is, the rolling ability of the wheel set mounted therein must continue to be ensured.

A advantageous constructive implementation of the inventive concept further provides that the actuator is designed as a positioning cylinder, in the extended state, the spring guidance of a leno-damping element against the case of the wheelset bearing.

The Use of such Lenoir elements is at the cost Freight wagon bogies far common. Such a Lenoir element consists essentially of a lead, which one of the primary suspension associated with the bogie Coil spring wrapped in the area of the spring ends and leads free of play, and a hinge pin, which rotates the spring guide on the bogie frame couples. Such a Lenoir element takes the function of a simple damping element true, which acts as a rocker arm with vertical deflection of the primary suspension and a dampening effect acting frictional force between the spring guide and Radsatzlagergehäuse generated. The invention now provides that a control cylinder a force on the lead a Lenoir element exercises and this by a substantially horizontal shift until for striking against the wheelset bearing housing slides. The established Cylinder tube of this actuator cylinder is on the bogie frame flanged. To maintain the power even over long periods of time offers an execution as a lossless hydraulic cylinder.

Of the Invention idea is based on a Schienenfräszuges in subsequent figures visualized. Show it:

1 Perspective view of trained as a carrier vehicle for tool units for rail milling rail vehicle

2 Detail view of a rail chassis according to the invention

The 1 shows a rail vehicle, which is part of a Schienenfräszuges and is designed to accommodate the Fräsaggregate. For better recognition this is in 1 shown rail vehicles still shown without these milling units; the rooms intended to accommodate these units are still empty. It can be clearly seen that the rail vehicle does not have a one-piece chassis frame, but is divided into three sub-segments: one head segment each ( 2 . 2 ' ) on the extremities of the vehicle and a middle segment arranged between these two head segments ( 3 ). A head segment ( 1 ) has a driver's or operator's station ( 9 ' ) for guiding the rail vehicle and for controlling or operating the milling units.

Only the two head segments each have a chassis frame ( 4 . 4 ' ), which on each of a rail chassis ( 1 . 1' ) is supported. On this chassis frame is a welded construction ( 5 . 5 ' ), which serves as a support and connecting element for the oriented in the direction of the middle segment flange planes.

Likewise, with each of the two chassis frame each a receiving plate ( 7 This receiving plate is aligned perpendicular to the vehicle longitudinal axis and oriented in the direction of the central segment.The necessary for the control of the milling unit linear movements are realized by means of a cross slide, the horizontal and vertical Has guides and is arranged between receiving plate and milling unit.

The middle segment, on the other hand, consists essentially of long bearers; in 1 is for example the left in the direction of travel outer longitudinal beams ( 6.1 ) and - partially obscured - the bottom longitudinal girder ( 6.2 ). These longitudinal beams are connected via a plurality of mating connections and expansion screws with the corresponding flange planes of the head segments. The middle segment has additional housing parts ( 8th ), which are also screwed by means of expansion screws with the corresponding flange planes of a head segment. Through these housing parts an enclosure of the milling units is formed.

at a fully configured vehicle according to the invention are therefore the milling units at the vehicle center oriented end faces of the chassis frame mounted on transversely oriented to the direction of receiving plates. Both head segments are in turn through the middle segment over a Variety of fitting and expansion screws "held together".

2 shows a detailed side view of an associated gear to a suspension according to the invention ( 11 ). This wheelset runs in a wheelset bearing ( 12 ), which via a coil springs ( 16 ) trained primary suspension to a bogie frame ( 17 ) is attached. Furthermore, the bogie on a Lenoir damping element. Such a Lenoir element essentially consists of a spring guide ( 14 ) which envelops the helical spring in the region of its spring ends and leads without play, and a hinge pin ( 15 ), which rotates the spring guide on the bogie frame ( 17 ). Such a Lenoir element performs the function of a simple damping element, which acts as a rocker arm with vertical compression of the primary suspension and thereby generates a damping frictional force acting between the spring guide and the housing of the wheelset bearing. An actuating cylinder ( 13 ) exerts a force on the spring leadership of a Lenoir element and pushes them by a substantially horizontal displacement until striking against the Radsatzlagergehäuse. The fixed cylinder tube of this actuator cylinder is flanged to the bogie frame. To maintain the force even over long periods of time, an embodiment of the actuating cylinder offers as a loss-free hydraulic cylinder.

1, 1'

track undercarriage

2, 2 '

head segment of the car body

3

middle segment of the car body

4, 4 '

chassis frame of the head segment

5, 5 '

weldment

6.1

Side sills

6.2

Medium carrier

7

mounting plate

8th

housing part

9 '

Cab; control room

10

working direction

11

wheelset

12

wheelset bearings

13

actuator

14

Leading a Lenoir-element

15

hinge pins a Lenoir element

16

coil spring

17

Bogie frame

Claims (2)

Chassis of a rail vehicle having at least one machine arrangement for the mechanical processing of a track with at least one mounted wheel set ( 11 ) and one of these wheelset bearings ( 12 ) enclosing housing, characterized in that the chassis an actuator ( 13 ), the Radsatzführung against the housing of the wheelset bearing ( 12 ) shifts and brings with this to the plant. Chassis of at least one machine arrangement for the mechanical processing of a track having rail vehicle with at least one mounted wheelset and this axle box enclosing housing according to claim 1, characterized in that the actuator ( 13 ) is designed as a control cylinder, which in the extended state, the spring leadership ( 14 ) of a Lenoir damping element against the housing ( 12 ) of the wheel set bearing shifts.