EP1734184B1 - Replaceable attachment of a railway slab of a maglevtrain to a track support - Google Patents

Abstract

The exchangeable fixing for the movement plate of a maglev track uses anchor screws (3) guided in tubes (4a,b) and engaging in the cement of the track bed (2) and-or movement path plate. The tubes can be compressed in their longitudinal direction by the anchor screws. Each tube can have at least two telescopic sections. claims include a bearing construction and tube for the track.

Description

Technical area

The invention relates to the attachment of the track plate on the guideway support of a magnetic levitation railway.

State of the art

Anchor bolts, which fix the track plate of the magnetic levitation train via bearings on the track carrier, are potted with mortar in the track carrier after the track plates have been adjusted. The bearings and track plates are therefore difficult to replace.

From the EP 1 441 066 A1 discloses an attachment according to the preamble of claim 1, a fastening of a track plate on a guideway support is known, which is effected by anchor bolts which pass through the edge region of a guideway carrier in tube sleeves. The tubular sleeve in the guideway carrier has anchor plates at its ends. The upper anchor plate is indirectly bearing for the track plate. The lower anchor plate abutment for the screw head of the anchor bolt. The anchor bolt is its clamping force via a nut directly on a bearing plate in the track plate, which is poured into the track plate and secured therein by means of anchors on train.

Object of the invention

The object of the invention is to attach the attached via the anchor bolts on Fahrwegträger track plates and thus the bearings interchangeable and simultaneously derive the passed on the anchor bolts occurring forces better in the concrete.

Presentation of the invention

The object is solved by the features specified in the characterizing part of claim 1.

For this purpose, the anchor bolts (3) run inside the guideway carrier (2) and / or the guideway plate (1) in tube sleeves 4a, 4b) (preferably with lubricating grease (5) filled), which are designed to be compressible in the longitudinal direction parallel to the anchor bolt (3). This is preferably done by consisting of at least two nested, mutually displaceable parts (like a telescope). Alternatively, however, the tube sleeves (4a, 4b) can also be designed accordion-like. If the anchor bolts (3) were guided in non-compressible sleeves, the compressive forces acting upon tightening of the anchor bolts (3) would only be transferred to the walls of the sleeves and would cause tensions, but they would not be discharged into the concrete. In the worst case, the sleeve would give way and would uncontrollably compressed something, which could easily lead to spalling of the concrete due to the sudden sideways forces occurring.

If, however, an anchor bolt (3) is tightened in a compressible sleeve (4a, 4b) according to the invention, then the tubular sleeve (4a, 4b) can avoid the compressive force without being damaged and shorten slightly. As a result, a compressing force is exerted on plate-like surfaces (7, anchor plates) at the ends of the tube sleeve (4a, 4b) on the concrete lying between the anchor plates (7). Thus, the concrete behaves between the two anchor plates (7) of its strength similar to prestressed concrete. He behaves much less brittle. As a result, in turn, a spalling of concrete next to the tube sleeves (4a, 4b) is prevented, which thus leads to an increased strength of the concrete and thus the driveway of the magnetic levitation train. However, this also makes it possible to design the dimensions of the anchoring and the track at a better concrete quality otherwise.

The Fig.1 shows by way of example the attachment of a track plate (1) on the track carrier (2) by means of anchor bolts (3) which are guided in compressible tube sleeves (4a, 4b). In the example, the tube sleeves (4a, 4b) are made in two parts and telescopically slidable.

The track plate (1) lies with the lower anchor plate (7) of the Fahrwegplattenrohrhülse (4a) via a steel bearing (6) (ie not elastically mounted) on the upper anchor plate (7) of the Fahrwegträgerrohrhülse (4b). The upper anchor plate (7) of the Fahrwegplattenrohrhülse (4a) is embedded in the concrete of the track plate (1).

The Fahrwegträgerrohrhülse (4b) passes through the edge region of the guideway carrier (2). Your lower anchor plate (7) is abutment for the nut of the anchor bolt (3).

The anchor plates (7) are preferably made of stainless steel.

In order to facilitate the telescoping of the tube sleeves (4a, 4b), located at the end of the outer sleeve around the inner sleeve around a bead / ring (10) made of compressible material. Without this bead / ring (10) would be when nesting concrete at the end of the outer tube sleeve, or the end of the tube sleeve itself, destroyed.

(In the case of a concertina-like construction of the compressible tubular sleeve, this accordion-like part would preferably be surrounded by a thin layer of compressible material in order to avoid destruction.) The steel bearing (6) between track plate (1) and guideway carrier (2) preferably has a PTFE coating and is also preferably also corrosion resistant in stainless steel.

In the example according to Fig.1 have the anchor plates (7) of Fahrwegplattenrohrhülse (4a) and Fahrwegträgerrohrhülse (4b) directed to the bearing (6) on a protruding extension (9), which fits into a recess (8) in the steel bearing (6) and depending on the fit to a fixation the steel bearing (6) with zero (ie no degree of freedom) or one-dimensional mobility to the anchor plate (7) and thus also of track plate (1) leads to guideway support (2).

In Fig. 2 is shown as a section of another variant of the storage: Here, the anchor plates (7) no extension (9), but a recess (8), as well as the bearing (6). Dowel disks (11) are then located in the cavities resulting between armature plate (7) and bearing (6) as the sum of the two collisions (8) which meet one another to transmit the horizontal forces.

By using dowel plates (11), the production of the anchor plates (7), which are preferably milled from a piece of solid material, material-saving. It is also possible to use dowel discs (11) made of a completely different material and also easier to exchange.

LIST OF REFERENCE NUMBERS

1

track slab

2

guideway beams

3

anchor bolt

4a

two-piece, telescoping Fahrplatteplattenrohrhülse

4b

two-piece, telescoping guideway tube sleeve

5

Anti-Corrosion Grease

6

steel bearings

7

anchor plate

8th

Recess in steel bearing

9

projecting extension on anchor plate

10

Ring made of compressible material

11

dowel disc

Claims (5)

1. An attachment of a maglevtrain railway slab (1), which rests via bearings (6) on a track support (2), using anchor bolts (3) guided in pipe sleeves (4a, 4b) which can be embedded into the concrete of the track support (2) and/or the railway slab (1), wherein the pipe sleeves (4a, 4b) are compressible in their longitudinal direction parallel to the anchor bolt (3) and the compressible area is located between two disc-like sections, the anchor plates (7), which are attached to the pipe sleeve,
   characterized in that the pipe sleeve (4a, 4b) consists of at least two pipe-like parts which can slide telescope-like into each other.
2. An attachment according to claim 1,
   characterized in that the pipe sleeve (4a, 4b) comprises a bulge/ring (10) of compressible material at the end of the outer pipe-like part and around the inner pipe-like part.
3. A bearing construction for the railway slab (1) of a maglevtrain on a track support (2) with the aid of an attachment according to at least one of claims 1 or 2,
   characterized in that the lower anchor plate (7) of the first compressible pipe sleeve (4a), which can be fixed to the railway slab (1), and the upper anchor plate (7) of the second compressible pipe sleeve (4b), which can be fixed to the track support (2), with their sides directed outwards from the component represent the contact areas to the bearing (6, or 6, 11) via which the railway slab (1) rests on the track support (2) during operation.
4. A bearing construction according to claim 3,
   characterized in that the bearing (6) consists of a small steel block and the anchor plates (7) exhibit projections (9) which fit exactly or with one-dimensional play, in order to create a degree of freedom of motion, into corresponding recesses (8) in the bearing (6),
   or in that the anchor plates (7) exhibit recesses which fit corresponding projections of the bearing.
5. A bearing construction according claim 3 or 4,
   characterized in that the anchor plates (7) exhibit recesses (8), as does the bearing (6) which is built as a small steel block, and in that the cavities that are formed by the meeting of the recesses (8) of the bearing (6) and the anchor plate (7) contain replaceable dowel discs (11), made of steel or other bearing material, for the purpose of transmitting the horizontal forces.

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