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EP0144451B1 - Hollow drive shaft for rail vehicles - Google Patents

Hollow drive shaft for rail vehicles Download PDF

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Publication number
EP0144451B1
EP0144451B1 EP83112095A EP83112095A EP0144451B1 EP 0144451 B1 EP0144451 B1 EP 0144451B1 EP 83112095 A EP83112095 A EP 83112095A EP 83112095 A EP83112095 A EP 83112095A EP 0144451 B1 EP0144451 B1 EP 0144451B1
Authority
EP
European Patent Office
Prior art keywords
noise
gearbox
casing
sound
reducing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83112095A
Other languages
German (de)
French (fr)
Other versions
EP0144451A3 (en
EP0144451A2 (en
Inventor
Mirko Dipl.-Ing. Tikvicki
Peter Kapolnek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP83112095A priority Critical patent/EP0144451B1/en
Priority to AT83112095T priority patent/ATE33004T1/en
Priority to DE8383112095T priority patent/DE3375996D1/en
Publication of EP0144451A2 publication Critical patent/EP0144451A2/en
Publication of EP0144451A3 publication Critical patent/EP0144451A3/en
Application granted granted Critical
Publication of EP0144451B1 publication Critical patent/EP0144451B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F3/00—Types of bogies
    • B61F3/02—Types of bogies with more than one axle
    • B61F3/04—Types of bogies with more than one axle with driven axles or wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
    • B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies

Definitions

  • the invention relates to a hollow shaft drive for two drive axles of a chassis for a rail vehicle according to the preamble of claim 1.
  • Such a hollow shaft drive is known from DE-C-25 14 265 and is particularly compact and lightweight due to its housingless motor design with the omission of separate end shields.
  • a traction-ventilated three-phase motor with a short-circuit rotor is usually provided as the traction motor, which has a fan seated on the motor shaft, which is arranged in a correspondingly designed fan chamber section next to a pressure ring lying on the end faces of the clamped stator core package.
  • the two fan chamber sections of the gear housing have circumferential air outlets for the cooling air flowing through the drive motor.
  • the gear housing is supported with its gear housing heads on the hollow shafts surrounding the drive axles for the drive wheels, which in turn are mechanically connected to the drive axles in a known manner.
  • the stator core package protrudes radially on all sides over the slimmer gear housing necks and must have a minimum safety distance from the track surface.
  • the air outlets are protected against the ingress of foreign bodies into the engine interior by air covers that cover the air outlets on all sides by a distance.
  • the outer surfaces of the stator core and the gearbox housing are exposed to the cooling driving wind, so that sufficient cooling of the driving motor and the gearbox is always guaranteed even with higher engine loads.
  • such hollow shaft drives produce ranges in particular at acceleration and braking, i.e. Speed ranges, disturbing noises that are perceived as particularly annoying when driving in inhabited areas.
  • Speed ranges disturbing noises that are perceived as particularly annoying when driving in inhabited areas.
  • Measurements have shown that the tonal, torque-dependent noises occurring when starting off or braking have an increasing and decreasing tone frequency with the engine speed, i.e. the frequency of the dominating magnetic sound changes proportionally with the operating frequency or the driving speed and runs through the natural frequency of different parts of the hollow shaft drive. This results in an airborne sound resonance of approx. 640 Hz due to the natural frequency of the stator core, which is followed by several briefly very loud resonances in the frequency range from approx.
  • the invention has for its object to reduce such annoying noises, without noticeable impairment of the heat dissipation and in compliance with the said minimum distance of the drive to the track surface and the required maintenance accessibility of the auxiliary devices with easy assembly and disassembly of the measures necessary for noise reduction without constructive intervention in the hollow shaft drive, so that retrofitting of hollow shaft drives with noise-reducing devices is possible without constructive intervention in the hollow shaft drives and their storage.
  • noise reduction capsules made of sound-reducing material for drives of road vehicles, consisting of fan-cooled internal combustion engines including a manual transmission, which have openings for the noise reduction capsule on the front and rear sides have cooling air flowing through them, which is arranged inside the noise-reducing capsule, wherein the openings are assigned sound-absorbing means.
  • the noise reduction capsule is connected to vehicle parts, but not to the drive itself, so that relative movements between the flexible drive mounted in the chassis and the noise reduction capsule must be taken into account by correspondingly larger distances between the drive and the noise reduction capsule in order to prevent an undesired one-sided narrowing of the cooling air paths or a sound-transmitting contact to avoid the drive, which further increases the dimensions of the noise reduction capsule.
  • a track vehicle with its structure, not shown, is mounted on chassis, via conventional turntables, also not shown, one of which is provided with a hollow shaft drive shown.
  • Each hollow shaft drive contains a housing-free drive motor 1, the stator core 1A of octagonal contour is provided on both ends with pressure rings 2, which are pressed in a known manner, not shown, by clamps arranged on the circumference against the stator core 1A and hold it together.
  • pressure rings 2 With the pressure rings 2 gear housing 3 are releasably connected, in which the motor shaft and the gear shafts are mounted, so that separate end shields are omitted.
  • Each gear housing 3 has a fan chamber section 3A adjoining the associated pressure ring 2, a slimmer gear housing neck 3B and an end-side gear housing head 3C, which is supported on a hollow shaft 4 coupled to the gear, which surrounds a drive axle 5 for drive wheels 6 and with it is not mechanically coupled known manner not shown.
  • Each transmission housing 3 has in the area of the fan chamber section 3A air passages 3D for the cooling air flowing through the engine interior.
  • a fan is attached to the motor shaft and conveys the cooling air through the motor interior.
  • housing parts 8, 9 project laterally for auxiliary devices (brake pressure cylinders, cables, etc.) which can be influenced from the outside and which must be accessible from the outside and seal the interior of the engine and transmission from the outside.
  • auxiliary devices brake pressure cylinders, cables, etc.
  • the area from the gear housing neck 3B to the gear housing neck 3B is encased by an axially divided sound reduction capsule 10, which consists of deadened top, side and bottom surfaces 10A, 10B, 10C and has the sound damping means 11, 12, 13 in a special arrangement and design, such as this is explained in more detail below.
  • an axially divided sound reduction capsule 10 which consists of deadened top, side and bottom surfaces 10A, 10B, 10C and has the sound damping means 11, 12, 13 in a special arrangement and design, such as this is explained in more detail below.
  • the noise reduction capsule consists of deadened sheets, i.e. H. Sheets made of iron, aluminum or other metal coated with structure-borne noise-suppressing anti-drumming material, in which the relatively thin-walled sheets are provided with a less than three times thicker anti-drumming layer, so that the sound waves emanating from the interior of the noise-reducing capsule are reflected at a location other than the place of immission. Since there is no energy conversion during sound insulation, a sound congestion occurs in the free interior of the sound reduction capsule 10, the sound interference or standing sound waves of which would cause an increase in the sound level if no sound damping means 11, 12, 13 were provided at special inner locations of the sound reduction capsule.
  • the side surfaces 10B and the top surface 10A are coated with sound damping means 11, 12 which are adapted to the wavelength of the most disturbing magnetic tones in such a way that, despite the need to maintain a sufficient distance from the top edge of the track OS when one is released Air duct 14 between the two transmission housings 3 and the floor surface 10C, which has only been removed, a strong reduction in noise occurs.
  • the sound reduction capsule 10 has in the axial direction at the parting line 15 divided side surfaces 10B, the lower sections of which form a unit with the bottom surface 10C and whose upper sections form a unit with the top surface 10A, in such a way that the lower part of the sound reduction capsule 10 is removable.
  • Recesses in the sections of the two side surfaces 10B enclose the projecting housing parts 8, 9 already mentioned.
  • the upper part of the noise reduction capsule 10 is supported by structure-borne sound insulation at 18, 19 on the pressure rings 2 and the gear housing 3 in the area of the air passages 3D.
  • the gear housing necks 3B are provided at a distance 20 around the open end faces of the air-reducing capsule 10, each with a divided sound-absorbing wall 13, which are tightly connected to the bottom surface 10C and the side surfaces 10B, but have a free space 16 to the top surface 10A.
  • the stator core package 1A is surrounded by the sound damping means 11, 12 of the top and side surfaces 10A, 10B except for four corner-side clearances 17, which form two axial air ducts in the area of the octagonal stator core contour and a further duct 14 between the bottom surface 10C and the stator core package 1A to avoid heat build-up in the traction motor 1.
  • the wall thickness of the individual sound damping means 11, 12, 13 is dimensioned both for the sufficient sound damping and for sufficient cooling air delivery through and around the drive motor 1.
  • the noise reduction capsule 10 can take over the securing function of the air covers which form undesirably noises, wherein the air passages 3D in the gearbox housings 3B can be additionally secured by noiseless plastic grids 7.
  • additional front-end noise-damping aprons can be provided in front of the structure-borne sound insulation in a manner not shown.
  • the soundproofing means can preferably consist of stone and glass fiber material, in particular in the form of solid, plate-shaped coverings.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)
  • Motor Or Generator Frames (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

1. A hollow shaft drive for two driving axles (5) of an undercarriage for a rail vehicle whose draught-ventilated, unhoused electric traction motor (1) is positioned with its motor shaft at right angles to and between the driving axles (5) and is coupled to their hollow shafts (4) through gears, where the motor shaft and gears are supported in gearboxes (3) fastened at their front faces to thrust rings (2) which hold together the stack of stator laminations, which gearboxes (3) enclose ventilators (7) fastened on the motor shaft and in a ventilator chamber section, have peripheral air-vents (3D), where between the ventilator chamber sections and the gearbox heads (3C) which receive the hollow shafts (4), gearbox necks of slimmer dimensions are located from which laterally protrude housing components for auxiliary devices which are subject to outside influence, characterised in that a noise-reducing casing (10) is provided, made from noise-reducing material, which has openings at both end faces, provided with sound-absorbing means, for the passage of cool air conveyed by at least one fan positioned within the noise-reducing case, and which casing surrounds the region of the hollow shaft drive extending from gearbox neck (3B) to gearbox neck (3B), where the noise-reducing casing (10) is formed partly from non-reverberatory metal sheets and, at least at the traction motor (1), is insulated against structure-borne noise, where the floor surface (10C) of the casing (10) which is only non-reverberatory is positioned to serve as an air-conducting surface spaced from the two gearboxes (3) and from the underside of the stack of stator laminations (1A), and where the top and side faces (10A, 10B) of the casing (10), which are lined with additional sound-proofing means (11, 12, 13), lie closely against the outer side of the traction motor (1) up to the open longitudinal regions which serve as channels (17, 16) for cool air, and at the gearboxes (3) leave free an adequately large interspace for the cool air conveyed through the interior of the traction motor by way of the air vents ; and that at the open ends of the noise-reducing casing (10) the gearbox necks (3B) are provided with sound-proofing means which surround and are spaced from the gearbox necks and which leave a space free between them and the top face of the noise-reducing casing (10) and are closely connected only with the side faces (10B) and the bottom face (10C) of the noise-reducing casing (10).

Description

Die Erfindung betrifft einen Hohlwellenantrieb für zwei Treibachsen eines Fahrgestells für ein Schienenfahrzeug nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a hollow shaft drive for two drive axles of a chassis for a rail vehicle according to the preamble of claim 1.

Ein solcher Hohlwellenantrieb ist aus der DE-C-25 14 265 bekannt und durch seine gehäuselose Motorausführung unter Fortfall gesonderter Lagerschilde besonders kompakt und leicht bauend. Bei einfachem Aufbau mit kurzen Abmessungen ist als Fahrmotor üblicherweise ein durchzugsbelüfteter Drehstrommotor mit Kurzschlußläufer vorgesehen, der einen auf der Motorwelle sitzenden Lüfter aufweist, der in einem entsprechend ausgebildeten Lüfterkammerabschnitt neben einem an den Stirnseiten des geklammerten Ständerblechpaketes liegenden Druckring angeordnet ist. Die beiden Lüfterkammerabschnitte der Getriebegehäuse haben umfangsseitige Luftdurchlässe für die den Fahrmotor durchströmende Kühlluft. Die Getriebegehäuse stützen sich mit ihren Getriebegehäuseköpfen an den die Treibachsen für die Antriebsräder umgebenden Hohlwellen ab, die ihrerseits mechanisch mit den Treibachsen in bekannter Weise verbunden sind. Das Ständerblechpaket ragt radial über die schlankeren Getriebegehäusehälse allseitig vor und muß einen Mindestsicherheitsabstand zur Gleisoberfläche aufweisen. Die Luftdurchlässe sind gegen das Eindringen von Fremdkörpern in das Motorinnere durch Luftdeckel geschützt, die die Luftdurchlässe mit Abstand allseitig überdecken. Die Außenflächen des Ständerblechpaketes und der Getriebegehäuse sind dem kühlenden Fahrwind ausgesetzt, so daß auch bei höherer Motorbelastung stets eine ausreichende Entwärmung des Fahrmotors sowie der Getriebe gewährleistet wird.Such a hollow shaft drive is known from DE-C-25 14 265 and is particularly compact and lightweight due to its housingless motor design with the omission of separate end shields. With a simple construction with short dimensions, a traction-ventilated three-phase motor with a short-circuit rotor is usually provided as the traction motor, which has a fan seated on the motor shaft, which is arranged in a correspondingly designed fan chamber section next to a pressure ring lying on the end faces of the clamped stator core package. The two fan chamber sections of the gear housing have circumferential air outlets for the cooling air flowing through the drive motor. The gear housing is supported with its gear housing heads on the hollow shafts surrounding the drive axles for the drive wheels, which in turn are mechanically connected to the drive axles in a known manner. The stator core package protrudes radially on all sides over the slimmer gear housing necks and must have a minimum safety distance from the track surface. The air outlets are protected against the ingress of foreign bodies into the engine interior by air covers that cover the air outlets on all sides by a distance. The outer surfaces of the stator core and the gearbox housing are exposed to the cooling driving wind, so that sufficient cooling of the driving motor and the gearbox is always guaranteed even with higher engine loads.

Bei der gehäuselosen Ausführung, vorzugsweise von DS-Fahrmotoren mit Kurzschlußläufern, erzeugen solche Hohlwellenantriebe, insbesondere beim Beschleunigen und Bremsen in bestimmten Geschwindigkeits bereichen, d.h. Drehzahlbereichen, störende Geräusche, die bei Fahrten in bewohnten Gebieten als besonders lästig empfunden werden. Messungen haben ergeben, daß die beim Anfahren bzw. Bremsen auftretenden tonalen, drehmomentabhängigen Geräusche mit der Motordrehzahl an- und abschwellende Tonfrequenz aufweisen, d.h. die Frequenz des dominierenden magnetischen Tones ändert sich proportional mit der Betriebsfrequenz bzw. der Fahrgeschwindigkeit und durchläuft die Eigenfrequenz verschiedener Teile des Hohlwellenantriebes. So hat sich eine durch die Eigenfrequenz des Ständerblechpaketes bedingte Luftschallresonanz von ca. 640 Hz, an die sich mehrere kurzzeitig sehr laute Resonanzen im Frequenzbereich von ca. 700 bis 850 Hz durch die Luftdeckel anschließen und ein zusätzlicher Körperschall, ausgehend von den Druckringen und Getriebeteilen, messen lassen, wobei im unteren Teil des Frequenzbereichs der jeweilig lästige Ton als resonanzartige Tonpegelanhebung vom Ständerblechpaket (z. B. 645 Hz) den Druckringen (z. B. 780 und 930 Hz) und den Luftdeckeln (z. B. 715 Hz, 855 Hz und 930 Hz) sowie im hohen Frequenzbereich vom Getriebe abgestrahlt wurde.In the case of the housing-less version, preferably of DS traction motors with short-circuit rotors, such hollow shaft drives produce ranges in particular at acceleration and braking, i.e. Speed ranges, disturbing noises that are perceived as particularly annoying when driving in inhabited areas. Measurements have shown that the tonal, torque-dependent noises occurring when starting off or braking have an increasing and decreasing tone frequency with the engine speed, i.e. the frequency of the dominating magnetic sound changes proportionally with the operating frequency or the driving speed and runs through the natural frequency of different parts of the hollow shaft drive. This results in an airborne sound resonance of approx. 640 Hz due to the natural frequency of the stator core, which is followed by several briefly very loud resonances in the frequency range from approx. 700 to 850 Hz through the air cover and an additional structure-borne sound, starting from the pressure rings and gear parts. Have the measurement measured, with the respective annoying tone in the lower part of the frequency range as a resonance-like tone level increase from the stator core (e.g. 645 Hz), the pressure rings (e.g. 780 and 930 Hz) and the air covers (e.g. 715 Hz, 855 Hz and 930 Hz) and in the high frequency range was emitted by the transmission.

Der Erfindung liegt die Aufgabe zugrunde solche lästigen Geräusche zu mindern, ohne merkliche Beeinträchtigung der Entwärmung und unter Einhaltung des besagten Mindestabstandes des Antriebs zur Gleisoberfläche sowie der geforderten Wartungs-Zugänglichkeit auch der Hilfseinrichtungen bei leichter Montage und Demontage der zur Geräuschminderung notwendigen Maßnahmen ohne konstruktive Eingriffe in den Hohlwellenantrieb, so daß eine Nachrüstung von Hohlwellenantrieben mit geräuschmindernden Einrichtungen ohne konstruktive Eingriffe in die Hohlwellenantriebe und ihre Lagerung möglich ist.The invention has for its object to reduce such annoying noises, without noticeable impairment of the heat dissipation and in compliance with the said minimum distance of the drive to the track surface and the required maintenance accessibility of the auxiliary devices with easy assembly and disassembly of the measures necessary for noise reduction without constructive intervention in the hollow shaft drive, so that retrofitting of hollow shaft drives with noise-reducing devices is possible without constructive intervention in the hollow shaft drives and their storage.

Es sind aus der EP-A-0 031 131 und der FR-A-2 318 050 Schallminderungskapseln aus schallreduzierendem Material für Antriebe von Straßenfahrzeugen, bestehend aus lüftergekühlten Verbrennungsmotoren samt Schaltgetriebe, bekannt, die an den Vorder- und Rückseiten Öffnungen für die die Schallminderungskapsel durchströmende, von innerhalb der Schallminderungskapsel angeordneten Lüftern bewegte Kühlluft aufweisen, wobei den Öffnungen Schalldämpfungsmittel zugeordnet sind.It is known from EP-A-0 031 131 and FR-A-2 318 050 noise reduction capsules made of sound-reducing material for drives of road vehicles, consisting of fan-cooled internal combustion engines including a manual transmission, which have openings for the noise reduction capsule on the front and rear sides have cooling air flowing through them, which is arranged inside the noise-reducing capsule, wherein the openings are assigned sound-absorbing means.

Die Schallminderungskapsel iet mit Fahrzeugteilen, nicht aber mit dem Antrieb selbst verbunden, so daß Relativbewegungen zwischen dem nachgiebig im Fahrgestell gelagerten Antrieb und der Schallminderungskapsel durch entsprechend größere Abstände zwischen Antrieb und Schallminderungskapsel berücksichtigt werden müssen um eine unerwünschte einseitige Verengung der Kühlluftpfade oder eine schallübertragende Berührung mit dem Antrieb zu vermeiden, was zu dem noch die Abmessungen der Schallminderungskapsel vergrößert.The noise reduction capsule is connected to vehicle parts, but not to the drive itself, so that relative movements between the flexible drive mounted in the chassis and the noise reduction capsule must be taken into account by correspondingly larger distances between the drive and the noise reduction capsule in order to prevent an undesired one-sided narrowing of the cooling air paths or a sound-transmitting contact to avoid the drive, which further increases the dimensions of the noise reduction capsule.

Die Lösung der destellten Aufgabe gelingt auf besonders einfache und wirksame Weise durch die Maßnahmen nach dem Kennzeichen des Patentanspruchs 1.The problem is solved in a particularly simple and effective manner by the measures according to the characterizing part of patent claim 1.

Weitere Ausgestaltungen der Erfindung sind Gegenstand von abhängigen Ansprüchen.Further embodiments of the invention are the subject of dependent claims.

Die Erfindung ist anhand eines schematisch dargestellten Ausführungsbeispiels nachfolgend näher erläutert. Es zeigt

  • Fig. 1 einen Hohlwellenantrieb im Längsschnitt,
  • Fig. 2 und 3 Querschnitte des Gegenstandes der Fig. 1.
The invention is explained in more detail below with the aid of a schematically illustrated exemplary embodiment. It shows
  • 1 is a hollow shaft drive in longitudinal section,
  • 2 and 3 cross sections of the object of FIG. 1st

Ein Gleisfahrzeug ist mit seinem nicht dargestellten Aufbau über ebenfalls nicht dargestellte übliche Drehkränze auf Fahrgestellen gelagert, von denen eines mit einem gezeigten Hohlwellenantrieb versehen ist. Jeder Hohlwellenantrieb enthält einen gehäuselosen Fahrmotor 1, dessen Ständerblechpaket 1A von achteckiger Kontur an beiden Stirnseiten mit Druckringen 2 versehen ist, die in nicht dargestellter bekannter Weise durch am Umfang angeordnete Klammern gegen das Ständerblechpaket 1A angepreßt sind und dieses zusammenhalten. Mit den Druckringen 2 sind Getriebegehäuse 3 lösbar verbunden, in denen die Motorwelle sowie die Getriebewellen gelagert sind, so daß gesonderte Lagerschilde in Fortfall kommen. Jedes Getriebegehäuse 3 weist einen an den zugeordneten Druckring 2 angrenzenden Lüfterkammerabschnitt 3A, einen schlankeren Getriebegehäusehals 3B sowie einen endseitigen Getriebegehäusekopf 3C auf, der sich an einer mit dem Getriebe gekuppelten Hohlwelle 4 abstützt, die jeweils eine Treibachse 5 für Antriebsräder 6 umgibt und mit diesen in nicht näher dargestellter bekannter Weise mechanisch gekuppelt ist. Jedes Getriebegehäuse 3 hat im Bereich des Lüfterkammerabschnittes 3A Luftdurchlässe 3D für die das Motorinnere durchströmende Kühlluft. Im Bereich mindestens eines Lüfterkammerabschnittes 3A ist auf der Motorwelle ein nicht dargestellter Lüfter befestigt, der die Kühlluft durch das Motorinnere fördert. Im Bereich der Getriebegehäusehälse 3B ragen seitlich Gehäuseteile 8, 9 für von außen beeinflußbare Hilfseinrichtungen (Bremsdruckzylinder, Kabel usw.) vor, die von außen zugänglich sein müssen und das Motor-und Getriebeinnere nach außen abdichten.A track vehicle with its structure, not shown, is mounted on chassis, via conventional turntables, also not shown, one of which is provided with a hollow shaft drive shown. Each hollow shaft drive contains a housing-free drive motor 1, the stator core 1A of octagonal contour is provided on both ends with pressure rings 2, which are pressed in a known manner, not shown, by clamps arranged on the circumference against the stator core 1A and hold it together. With the pressure rings 2 gear housing 3 are releasably connected, in which the motor shaft and the gear shafts are mounted, so that separate end shields are omitted. Each gear housing 3 has a fan chamber section 3A adjoining the associated pressure ring 2, a slimmer gear housing neck 3B and an end-side gear housing head 3C, which is supported on a hollow shaft 4 coupled to the gear, which surrounds a drive axle 5 for drive wheels 6 and with it is not mechanically coupled known manner not shown. Each transmission housing 3 has in the area of the fan chamber section 3A air passages 3D for the cooling air flowing through the engine interior. In the area of at least one fan chamber section 3A, a fan, not shown, is attached to the motor shaft and conveys the cooling air through the motor interior. In the area of the gear housing necks 3B, housing parts 8, 9 project laterally for auxiliary devices (brake pressure cylinders, cables, etc.) which can be influenced from the outside and which must be accessible from the outside and seal the interior of the engine and transmission from the outside.

Der Bereich von Getriebegehäusehals 3B zu Getriebegehäusehals 3B ist von einer axial geteilten Schallminderungskapsel 10 umhüllt, die aus entdröhnten Deck-, Seiten- und Bodenflächen 10A, 10B, 10C besteht, und die Schalldämpfungsmittel 11, 12,13 in besonderer Anordnung und Gestaltung aufweist, wie dies nachfolgend näher dargelegt ist.The area from the gear housing neck 3B to the gear housing neck 3B is encased by an axially divided sound reduction capsule 10, which consists of deadened top, side and bottom surfaces 10A, 10B, 10C and has the sound damping means 11, 12, 13 in a special arrangement and design, such as this is explained in more detail below.

Die Schallminderungskapsel besteht aus entdröhnten Blechen, d. h. mit körperschalldämpfendem Antidröhnmaterial beschichteten Blechen aus Eisen, Aluminium oder anderem Metall, bei denen die relativ dünnwandigen Bleche mit einer weniger als dreifach dickeren Antidröhnschicht versehen sind, damit die von im Inneren der Schallminderungskapsel liegenden Schallimmisionsquellen ausgehenden Schallwellen auf einen anderen als den Immisionsort reflektiert werden. Da bei der Schalldämmung keine Energieumwandlung stattfindet, tritt im freien Innenraum der Schallminderungskapsel 10 ein Schallstau auf, dessen Schallinterferenzen bzw. stehende Schallwellen eine Erhöhung des Schallpegels bewirken würde, wenn keine Schalldämpfungsmittel 11, 12,13 an besonderen Innenstellen der Schallminderungskapsel vorgesehen wären.The noise reduction capsule consists of deadened sheets, i.e. H. Sheets made of iron, aluminum or other metal coated with structure-borne noise-suppressing anti-drumming material, in which the relatively thin-walled sheets are provided with a less than three times thicker anti-drumming layer, so that the sound waves emanating from the interior of the noise-reducing capsule are reflected at a location other than the place of immission. Since there is no energy conversion during sound insulation, a sound congestion occurs in the free interior of the sound reduction capsule 10, the sound interference or standing sound waves of which would cause an increase in the sound level if no sound damping means 11, 12, 13 were provided at special inner locations of the sound reduction capsule.

Um dem Schallfeld die gestaute Schallenergie weitgehend zu entziehen, werden die Seitenflächen 10B und die Deckfläche 10A mit an die Wellenlänge der am meisten störenden magnetischen Töne angepaßten Schalldämpfungsmitteln 11, 12 so belegt, daß trotz der zwecks Einhaltung eines ausreichenden Abstandes zur Gleisoberkante OS bei Freilassung eines Luftkanals 14 zwischen beiden Getriebegehäusen 3 und der nur entdrohnten Bodenfläche 10C eine starke Geräuschminderung eintritt.In order to largely remove the accumulated sound energy from the sound field, the side surfaces 10B and the top surface 10A are coated with sound damping means 11, 12 which are adapted to the wavelength of the most disturbing magnetic tones in such a way that, despite the need to maintain a sufficient distance from the top edge of the track OS when one is released Air duct 14 between the two transmission housings 3 and the floor surface 10C, which has only been removed, a strong reduction in noise occurs.

Die Schallminderungskapsel 10 hat in axialer Richtung bei der Teilfuge 15 geteilte Seitenflächen 10B, deren untere Abschnitte eine Einheit mit der Bodenfläche 10C und deren obere Abschnitte eine Einheit mit der Deckfläche 10A bilden, derart, daß der untere Teil der Schallminderungskapsel 10 abnehmbar ist. Ausnehmungen in den Abschnitten der beiden Seitenflächen 10B umschließen die schon genannten vorragenden Gehäuseteile 8, 9. Der obere Teil der Geräuschminderungskapsel 10 ist körperschallisoliert bei 18, 19 an den Druckringen 2 und den Getriebegehäusen 3 im Bereich der Luftdurchlässe 3D abgestützt.The sound reduction capsule 10 has in the axial direction at the parting line 15 divided side surfaces 10B, the lower sections of which form a unit with the bottom surface 10C and whose upper sections form a unit with the top surface 10A, in such a way that the lower part of the sound reduction capsule 10 is removable. Recesses in the sections of the two side surfaces 10B enclose the projecting housing parts 8, 9 already mentioned. The upper part of the noise reduction capsule 10 is supported by structure-borne sound insulation at 18, 19 on the pressure rings 2 and the gear housing 3 in the area of the air passages 3D.

Um die Lüftergeräusche herabzusetzen, sind an den offenen Stirnseiten der Luftminderungskapsel 10 die Getriebegehäusehälse 3B mit Abstand 20 umgebend jeweils eine geteilte Schalldämpfungswand 13 vorgesehen, die mit der Bodenfläche 10C und den Seitenflächen 10B dicht verbunden sind, jedoch einen Freiraum 16 zur Deckfläche 10A aufweisen. Das Ständerblechpaket 1A ist von den Schalldämpfungsmitteln 11, 12 der Deck- und Seitenflächen 10A, 10B bis auf vier eckseitige Freiräume 17 dicht umgeben, die zwei axiale Luftkanäle im Bereich der achteckigen Ständerblechkontur und einen weiteren Kanal 14 zwischen Bodenfläche 10C und Ständerblechpaket 1A bilden, um einen Wärmestau im Fahrmotor 1 zu vermeiden. Die Wandstärke der einzelnen Schalldämpfungsmittel 11, 12, 13 ist sowohl für die ausreichende Schalldämpfung als auch für eine ausreichende Kühlluftförderung durch und um den Fahrmotor 1 bemessen. Die Schallminderungskapsel 10 kann dabei die Sicherungsfunktion der unerwünschterweise Geräusche bildenden Luftdeckel übernehmen, wobei die Luftdurchlässe 3D in den Getriebegehäusen 3B durch geräuschfreie Kunststoffgitter 7 noch zusätzlich gesichert sein können.In order to reduce the fan noise, the gear housing necks 3B are provided at a distance 20 around the open end faces of the air-reducing capsule 10, each with a divided sound-absorbing wall 13, which are tightly connected to the bottom surface 10C and the side surfaces 10B, but have a free space 16 to the top surface 10A. The stator core package 1A is surrounded by the sound damping means 11, 12 of the top and side surfaces 10A, 10B except for four corner-side clearances 17, which form two axial air ducts in the area of the octagonal stator core contour and a further duct 14 between the bottom surface 10C and the stator core package 1A to avoid heat build-up in the traction motor 1. The wall thickness of the individual sound damping means 11, 12, 13 is dimensioned both for the sufficient sound damping and for sufficient cooling air delivery through and around the drive motor 1. The noise reduction capsule 10 can take over the securing function of the air covers which form undesirably noises, wherein the air passages 3D in the gearbox housings 3B can be additionally secured by noiseless plastic grids 7.

Um von den Getriebegehäuseköpfen 3C ausgestrahlte Geräusche zu mindern, können diesen in nicht gezeigter Weise zusätzliche stirnseitige Geräuschdämpfungsschürzen körperschallisoliert vorgelagert sein.In order to reduce noise emitted by the gear housing heads 3C, additional front-end noise-damping aprons can be provided in front of the structure-borne sound insulation in a manner not shown.

Die Schalldämpfungsmittel können vorzugsweise aus Stein-und Glasfasermaterial, insbesondere in Form fester, plattenförmiger Beläge bestehen.The soundproofing means can preferably consist of stone and glass fiber material, in particular in the form of solid, plate-shaped coverings.

Claims (5)

1. A hollow shaft drive for two driving axles (5) of an undercarriage for a rail vehicle whose draught-ventilated, unhoused electric traction motor (1) is positioned with its motor shaft at right angles to and between the driving axles (5) and is coupled to their hollow shafts (4) through gears, where the motor shaft and gears are supported in gearboxes (3) fastened at their front faces to thrust rings (2) which hold together the stack of stator laminations, which gearboxes (3) enclose ventilators (7) fastened on the motor shaft and in a ventilator chamber section, have peripheral air-vents (3D), where between the ventilator chamber sections and the gearbox heads (3C) which receive the hollow shafts (4), gearbox necks of slimmer dimensions are located from which laterally protrude housing components for auxiliary devices which are subject to outside influence, characterised in that a noise-reducing casing (10) is provided, made from noise-reducing material, which has openings at both end faces, provided with sound- absorbing means, for the passage of cool air conveyed by at least one fan positioned within the noise-reducing case, and which casing surrounds the region of the hollow shaft drive extending from gearbox neck (3B) to gearbox neck (3B), where the noise-reducing casing (10) is formed partly from non-reverberatory metal sheets and, at least at the traction motor (1), is insulated against structure-borne noise, where the floor surface (10C) of the casing (10) which is only non-reverberatory is positioned to serve as an air-conducting surface spaced from the two gearboxes (3) and from the underside of the stack of stator laminations (1A), and where the top and side faces (10A, 10B) of the casing (10), which are lined with additional sound-proofing means (11, 12, 13), lie closely against the outer side of the traction motor (1) up to the open longitudinal regions which serve as channels (17, 16) for cool air, and at the gearboxes (3) leave free an adequately large interspace for the cool air conveyed through the interior of the traction motor by way of the air vents; and that at the open ends of the noise-reducing casing (10) the gearbox necks (3B) are provided with sound-proofing means which surround and are spaced from the gearbox necks and which leave a space free between them and the top face of the noise-reducing casing (10) and are closely connected only with the side faces (10B) and the bottom face (10C) of the noise-reducing casing (10).
2. A hollow shaft drive as claimed in Claim 1, characterised in that at the front ends of the gearbox heads (3C), additional non-reverberatory damping aprons are held, which are lined with sound-proofing means, insulated against solid- borne noise and detachable.
3. A hollow shaft drive as claimed in Claim 1, characterised in that the sound-proofing means (11, 12, 13) consist of mineral wool and glass-fibre material.
4. A hollow shaft drive as claimed in Claim 3, characterised in that sound-proofing means are in the form of preferably plate-shaped, compact coverings.
5. A hollow shaft drive as claimed in Claim 1, characterised in that the noise-reducing casing (10) has axially divided side faces (10B) with apertures for the housing components (8, 9), the upper sections of which form one unit with the top surface (10A), and the lower sections of which form a unit with the floor surface (10C).
EP83112095A 1983-12-01 1983-12-01 Hollow drive shaft for rail vehicles Expired EP0144451B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP83112095A EP0144451B1 (en) 1983-12-01 1983-12-01 Hollow drive shaft for rail vehicles
AT83112095T ATE33004T1 (en) 1983-12-01 1983-12-01 HOLLOW SHAFT DRIVE FOR A RAIL VEHICLE.
DE8383112095T DE3375996D1 (en) 1983-12-01 1983-12-01 Hollow drive shaft for rail vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83112095A EP0144451B1 (en) 1983-12-01 1983-12-01 Hollow drive shaft for rail vehicles

Publications (3)

Publication Number Publication Date
EP0144451A2 EP0144451A2 (en) 1985-06-19
EP0144451A3 EP0144451A3 (en) 1985-11-06
EP0144451B1 true EP0144451B1 (en) 1988-03-16

Family

ID=8190848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112095A Expired EP0144451B1 (en) 1983-12-01 1983-12-01 Hollow drive shaft for rail vehicles

Country Status (3)

Country Link
EP (1) EP0144451B1 (en)
AT (1) ATE33004T1 (en)
DE (1) DE3375996D1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2514265C3 (en) * 1975-03-27 1979-06-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Drive for an electric rail vehicle
GB1528044A (en) * 1975-07-18 1978-10-11 British Leyland Uk Ltd Motor vehicles
DE2933706B2 (en) * 1979-08-21 1981-07-02 Thyssen Industrie Ag, 4300 Essen Bogie for rail vehicles, e.g. trams
DE2952188A1 (en) * 1979-12-22 1981-06-25 Magirus-Deutz Ag, 7900 Ulm COMMERCIAL VEHICLE WITH A CAPSULE, SIGNALALLY INSIDE THE OUTLINE OF THE CAB, FOR RECEIVING A DRIVE UNIT
DE3030594A1 (en) * 1980-08-11 1982-02-18 Siemens AG, 1000 Berlin und 8000 München DRIVE UNIT FOR THE DRIVE AXLES OF RAIL VEHICLES
DE3202811A1 (en) * 1982-01-26 1983-08-04 Siemens AG, 1000 Berlin und 8000 München DRIVE UNIT FOR THE DRIVE AXLES OF RAIL VEHICLES

Also Published As

Publication number Publication date
DE3375996D1 (en) 1988-04-21
ATE33004T1 (en) 1988-04-15
EP0144451A3 (en) 1985-11-06
EP0144451A2 (en) 1985-06-19

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