Fastening arrangement for a device carrier

Abstract

Fastening arrangement for a device carrier (1) on a rail vehicle, wherein the rail vehicle comprises at least one longitudinal beam (2) with a plurality of vertical bores arranged linearly and equidistantly on a horizontal projection (3) of the longitudinal beam, wherein a device carrier (1) is directly attached to at least one of the bores with releasable fasteners (4) and a bracket (5) is releasably attached to two further bores, wherein the bracket (5) encompasses a section of the device carrier (1) so that in the event of failure of the releasable fasteners (4) the device carrier (1) is held by the bracket (5), and wherein the bracket (5) has a projection (7) which prevents the releasable fasteners (4) of the device carrier (1) from falling off.

Description

Technical area

[0001] The invention relates to a fastening arrangement for an equipment carrier on a rail vehicle in steel construction. State of the art

[0002] Technical equipment on rail vehicles is often housed outside the car body on the roof or beneath the undercarriage in so-called roof or underfloor containers. This allows for separate prefabrication and testing of these components, as well as rapid repair or replacement. The assembly of these containers is subject to strict safety requirements, as falling off must be prevented at all costs. Vibrations, temperature changes, thermal expansion of the car body and containers, and shunting shocks place stress on these connection points, so they are subject to regular inspection. Depending on the vehicle design, different types of fastening are used.In light metal vehicles, where the underframe is made up of welded light metal profiles, C-rails formed onto the light metal profiles with sliding nuts guided into them are often used to attach the containers. This offers the advantage, among other things, of being able to determine the exact attachment position late in the vehicle's development process and even change it on vehicles already in use. Steel vehicles, whose underframe is typically made up of beams made of sheet steel using a bending process. Brackets are welded to these beams, to which the containers are attached, possibly via intermediate parts. The position of these brackets must be determined during the development of a rail vehicle, so that any later change, e.g. a change in the dimensions of a container, entails extensive further modifications.If existing vehicles are to be equipped with modified containers, extensive work on the undercarriage is required, such as removing existing brackets, welding on new ones, applying rust protection and painting, etc. There is no known method available to enable similar flexibility in container arrangement in steel-constructed rail vehicles as is common in light-alloy vehicles. Description of the invention

[0003] The invention is therefore based on the object of specifying a fastening arrangement for an equipment carrier on a rail vehicle in steel construction, which allows the detachable fastening of the equipment carrier directly to a car body of a rail vehicle and offers a particularly high level of security against the equipment carrier falling off in the event of failure of the detachable fastening.

[0004] The object is achieved by a fastening arrangement for a device carrier having the features of claim 1. Advantageous embodiments are the subject of subordinate claims.

[0005] According to the basic idea of ​​the invention, a fastening arrangement for an equipment carrier on a rail vehicle is described, in which the rail vehicle comprises at least one longitudinal member with a plurality of vertical bores arranged in a line-like and equidistant manner on a horizontal formation of the longitudinal member, wherein an equipment carrier is fastened directly to at least one of the bores with releasable fastening means and a bracket is releasably fastened to a further two bores, wherein the bracket engages around a section of the equipment carrier so that in the event of failure of the releasable fastening means, the equipment carrier is held by the bracket, and wherein the bracket has a formation which prevents the releasable fastening means of the equipment carrier from falling off.

[0006] This provides the advantage of being able to attach a device carrier to a rail vehicle in such a way that, on the one hand, the device carrier is prevented from falling off if the device carrier's fastening means become loose, and, on the other hand, the device carrier's fastening means are also prevented from falling off. Furthermore, the invention offers the advantage of being able to arrange a device carrier according to the distance between the holes and also to subsequently change the mounting location, since no additional provisions, such as weld-on lugs, etc., are required on the rail vehicle other than the holes.

[0007] According to the invention, on a rail vehicle comprising at least one longitudinal member with a plurality of vertical bores arranged linearly and equidistantly on a horizontal formation of the longitudinal member, an equipment carrier is fastened to these bores by means of detachable connecting means, for example screw connections. A bracket is also detachably fastened to these vertical bores, wherein the bracket is fastened next to the bores for fastening the equipment carrier. This bracket is designed such that it encompasses a section of the equipment carrier so that if the attachment of the equipment carrier fails, this equipment carrier continues to be supported by the bracket. The bracket further has a formation which extends over the longitudinal axis of the fastening means of the equipment carrier.This means that if one of the fastening elements of the device carrier becomes loose, it cannot fall off because the shape of the bracket blocks this fastening element.

[0008] The invention provides for equipping the rail vehicle with at least one longitudinal beam comprising vertical bores arranged in a line-like and equidistant manner on a horizontal formation of the longitudinal beam. This can be easily provided for vehicles with a steel construction, in which such longitudinal beams are manufactured as bent sheet metal parts. For this purpose, in addition to producing the required sheet metal cutout, the bores can also be drilled before the bending process, a process that can be easily automated. The longitudinal beams commonly used in steel rail vehicles typically have a Z-, G-, or S-shaped cross-section, so that a horizontal section can easily be provided into which the vertical bores can be inserted.

[0009] Vehicles with a light metal construction, which are constructed from extruded light metal profiles, can also utilize the present invention, particularly since the required shape can be easily integrated into a light metal profile. However, other types of attachment for equipment carriers are also available for such vehicles, for example, via sliding nuts guided in C-rails.

[0010] Typical equipment carriers are cuboid-shaped. It is advantageous to provide the equipment carrier with rod-shaped protrusions and use these protrusions to attach it to the longitudinal beam. This allows a bracket to grip each of these rod-shaped protrusions and hold the equipment carrier in place if the fastening elements become loose.

[0011] Equipment carriers used in practical applications can be equipped with four rod-shaped formations, each of which is secured with a bracket.

[0012] Likewise, in practical embodiments of the invention, more than one hole can be used for the detachable attachment of the equipment carrier, for example, two adjacent holes can each be used to create a screw connection. This ensures a secure connection to the longitudinal member, especially with heavy equipment carriers.

[0013] The bracket is preferably designed with a substantially U-shaped cross-section, so that one of the legs of the U-shaped cross-section can be detachably fastened to the longitudinal member, and the other leg of the U-shaped cross-section forms the shape which prevents the detachable fastening means of the device carrier from falling off.

[0014] In this way, the function of the bracket can be realized by an easily manufactured sheet metal part, which typically has holes drilled into it for screw fastening.

[0015] The present invention is particularly advantageous for equipment carriers that are to be arranged beneath the undercarriage of a rail vehicle, i.e., so-called underfloor containers. A multitude of devices, such as batteries, power converters, water tanks, compressors, etc., are arranged beneath the undercarriage. Their falling off during operation must be prevented at all costs, as this could even lead to the derailment of the rail vehicle. Equipment carriers can also be attached to the roof of a rail vehicle using the arrangement presented here. However, the typical design of longitudinal beams in the roof area complicates practical implementation.

[0016] A key advantage of the present invention is the simple ability to subsequently change the mounting position of a device carrier. This requires only opening the device carrier's fastening elements and the associated brackets. Typical prior art fastenings, however, require adjustment of fixed attachment points, which usually requires extensive cutting, welding, and painting work.

[0017] Since the manufacturing of equipment carriers is subject to tolerances, the position of the fasteners, especially the holes on the equipment carriers, may deviate slightly from the specified position, making installation on the longitudinal beams more difficult. To overcome this disadvantage, we recommend designing the vertical holes in the longitudinal beams as elongated holes, so that the tolerances of the equipment carrier are accommodated at the mounting positions.

[0018] In addition to its use in equipment carriers, the fastening arrangement according to the invention can also be advantageously used for other components typically arranged on an undercarriage of a rail vehicle, such as the equipment aprons used to improve aerodynamics. Brief description of the drawings

[0019] Examples include: Fig.1 Mounting arrangement for a device carrier. Fig.2 Mounting arrangement for a device carrier, view towards the outside. Implementation of the invention

[0020] Fig.1shows, by way of example and schematically, a fastening arrangement for an equipment carrier. It shows a section transverse to the longitudinal axis of a longitudinal member 2 of a rail vehicle in the region of the mounting position of an equipment carrier 1. The section of a rail vehicle shown comprises an external longitudinal member 2 with part of the vehicle floor and part of an equipment carrier 1, which is a fastening rod of the equipment carrier 1. Typically, an equipment carrier 1 is fastened to the longitudinal members 2 of a rail vehicle with at least four fastening points. The longitudinal member 2 shown is formed from sheet steel, as is customary in steel vehicles, and has a substantially S-shaped cross-section. Part of the longitudinal member 2 is designed as a horizontal formation 3, in which a plurality of vertical bores are arranged linearly and equidistantly parallel to the longitudinal axis of the longitudinal member 2.The equipment carrier 1 is directly attached to two adjacent bores using detachable fastening means 4. The fastening means 4 are designed as screw connections, with an expansion sleeve 8 provided for each screw connection so that longer screws can be used at this critical, highly stressed connection point. At adjacent bores, i.e. following and leading to the fastening means 4, a bracket 5 is detachably attached to the longitudinal member 2. This is achieved by means of the fastening means 6, which are also designed as screw connections. The bracket 5 engages around a section of the equipment carrier 1 so that if the detachable fastening means 4 of the equipment carrier 1 fails, the section is held by the bracket 5. The bracket 5 thus represents a fall protection device for the equipment carrier 1. In addition, the bracket 5 has a recess 7 which extends transversely to the longitudinal axis of the fastening means 4 of the equipment carrier 1.This means that if the fastening elements 4, which are designed as screw connections, become loose, they cannot fall off. The bracket 5 therefore also represents a fall-off protection for the fastening elements 4. During assembly, the device carrier 1 must first be fastened to the longitudinal member 2 and then the bracket 5 must be brought into its assembly position and connected to the longitudinal member 2 using the fastening elements 6. This ensures optimal accessibility to the fastening elements 4 of the device carrier 1 before the bracket 5 is installed, so that conventional tools, in particular conventional

[0021] Torque wrenches can be used.

[0022] Fig.2 shows an example and schematically a fastening arrangement for a device carrier in an outward view. It is the fastening arrangement from Fig.1 shown, with the viewing direction opposite to that of Fig.1directed outwards. In particular, the gripping of the bracket 5 around a section of the device carrier 1 is visible. This section of the device carrier 1 is designed as a rod-shaped formation with a flattened area at the contact point with the longitudinal member 2. Furthermore, a fastening means 6 of the bracket 5 is visible in this view, as well as the formation 7 of the bracket 5. List of names

[0023] 1Equipment carrier 2Longitudinal beam 3Horizontal shape 4Fasteners for equipment carrier 5Bracket 6Fasteners for bracket 7Shape of the bracket 8Expansion sleeve

Claims

1. Fastening arrangement for a device carrier (1) on a rail vehicle, wherein the rail vehicle comprises at least one longitudinal member (2) with a plurality of vertical bores arranged in a line-like and equidistant manner on a horizontal formation (3) of the longitudinal member, characterized in that a device carrier (1) is fastened directly to at least one of the bores by means of detachable fastening means (4) and a bracket (5) is detachably fastened to a further two bores, wherein the bracket (5) engages around a section of the device carrier (1) so that in the event of failure of the detachable fastening means (4) the device carrier (1) is held by the bracket (5), and wherein the bracket (5) has a formation (7) which prevents the detachable fastening means (4) of the device carrier (1) from falling off.

2. Fastening arrangement for a device carrier (1) on a rail vehicle according to claim 1, characterized in thatthe bracket (5) is made of sheet steel by means of a bending process.

3. Fastening arrangement for a device carrier (1) on a rail vehicle according to claim 1 or 2, characterized in that the bracket (5) has a substantially U-shaped cross-section, wherein the bracket is detachably fastened to the longitudinal member with its first leg of the U-shaped cross-section and wherein the second leg of the U-shaped cross-section forms the shape (7) which prevents the detachable fastening means (4) of the device carrier (1) from falling off.

4. Fastening arrangement for a device carrier (1) on a rail vehicle according to one of claims 1 to 3, characterized in that the equipment carrier (1) is designed as an underground container.

5. Fastening arrangement for an equipment carrier (1) on a rail vehicle, characterized in that the holes on the longitudinal member (2) are each designed as elongated holes.

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