WO2014170113A1 - Retardateur comprenant une pompe à vide - Google Patents

Retardateur comprenant une pompe à vide Download PDF

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Publication number
WO2014170113A1
WO2014170113A1 PCT/EP2014/056242 EP2014056242W WO2014170113A1 WO 2014170113 A1 WO2014170113 A1 WO 2014170113A1 EP 2014056242 W EP2014056242 W EP 2014056242W WO 2014170113 A1 WO2014170113 A1 WO 2014170113A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
retarder
machine according
working medium
shaft
Prior art date
Application number
PCT/EP2014/056242
Other languages
German (de)
English (en)
Inventor
Alexander Martin
Jürgen KIBLER
Dieter Laukemann
Original Assignee
Voith Patent Gmbh
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 Voith Patent Gmbh filed Critical Voith Patent Gmbh
Priority to CN201480021793.3A priority Critical patent/CN105189225B/zh
Publication of WO2014170113A1 publication Critical patent/WO2014170113A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T10/00—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
    • B60T10/02—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrodynamic brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders

Definitions

  • a retarder comprises a retarder housing, a bladed rotor and a bladed stator, wherein rotor and stator together form a toroidal working space, which can be filled according to the operating state of the machine with a working medium.
  • the rotor is arranged on a rotatably mounted shaft, which is mounted at least on one side within the retarder housing, by means of a bearing. Furthermore, an idling pump can be provided, by means of which the working medium can be pumped through a connecting channel of a working fluid storage in the working space.
  • Hydrodynamic retarders are constructed such that when these are filled with a working medium, they can transmit torque from a driven primary paddle wheel, rotor, to a stationary secondary paddle wheel, also called a stator, hydrodynamically.
  • Rotor and stator thereby form a functional unit, which have a common working space which can be filled with a working medium.
  • a shaft to be braked for example, a transmission output shaft or indirectly rotatably connected to the drive wheels of the motor vehicle shaft (PTO shaft)
  • the working fluid is accelerated in the rotor to the outside and enters the stator, in which it is delayed radially inward flowing.
  • the working medium is thus displaced by the formation of the common working space in a circulation flow. Due to the circulation flow thus formed, a torque - referred to here as the braking torque of the retarder - is transmitted from the rotor to the stator. It is the Rotor and in particular the rotatably connected to the rotor shaft, delayed.
  • the size of the transmittable braking torque depends on the so-called degree of filling of the hydrodynamic retarder. If no braking torque is required, the retarder is emptied, so that the internal resistance of the retarder and thus the power loss is minimized.
  • the emptying and the filling of the retarder can be done for example by means of a pressure control or a pump.
  • the working medium is pumped from a storage container into the working space or from this back into the storage container.
  • the rotor can be moved on the shaft, so that the interaction between the rotor and stator is minimized.
  • the remaining air in the working space causes a braking effect and thus generates heat, it is necessary in non-braking operation, working medium, water or oil to promote the work space.
  • the lubrication and cooling of the retarder rotor shaft bearing must be guaranteed, which rotates constantly in non-braking operation with the transmission speed.
  • the present invention has for its object to provide a cost-effective solution to reliably supply the retarder idle with working fluid.
  • a hydrodynamic machine according to the invention in particular hydrodynamic retarder, according to the initially mentioned type or claim 1, is characterized in that the bearing has at least one Part of the connecting channel forms, so that the bearing is at least partially cooled and / or lubricated by the funded by the idle pump working fluid.
  • the working space which is formed by the rotor and the stator, in non-braking operation sufficiently with working medium, eg. As oil or water, is filled, so that the internal resistance of the retarder minimized and sufficient cooling is achieved.
  • working medium eg. As oil or water
  • the bearing of the rotor shaft which is mounted at least on one side by means of a bearing within the retarder, is sufficiently lubricated and / or cooled even in non-braking operation.
  • the working fluid is pumped by means of an idle pump through a connecting channel of a working fluid storage in the working space.
  • the channel may include a restrictor to control or regulate the working medium flow.
  • the working fluid is pumped from the idle pump through a channel which is formed by a plurality of sub-channels.
  • a partial channel or partial region of the connecting channel is formed by the passage cross section of the bearing, that is to say the intermediate spaces between the rolling bodies of the bearing, so that part of the working medium passes through the bearing into the working space.
  • Another sub-channel is connected by a parallel channel connection, z. B. the inflow passage in the operating state formed.
  • the idle pump is driven by the shaft of the retarder.
  • the pump shaft of the idle pump can be in direct connection with the shaft.
  • the pump housing of the idle pump is attached to the retarder housing or a Retardergepurteil. So the idle pump z. B. are inserted into a corresponding recess in the pump housing, in the way that the shaft and the pump shaft to each other aligned and can be connected directly.
  • the pump housing is constructed at least in two parts in the preferred embodiment, consisting of a pump body and a pump cover, wherein furthermore preferably the pump body is positioned or clamped between the retarder housing and the pump cover.
  • the impeller of the idling pump is mounted axially displaceably on the pump shaft.
  • This connection can z. B. be a feather key, a splined or an involute connection.
  • the impeller may for example consist of plastic.
  • this is preferably designed such that the outer diameter of the impeller is smaller than the inner diameter of the working space or smaller than the shaft diameter.
  • the connecting channel between reservoir and working space consists of several Partkanal Swissen. Between pump outlet, pressure side, and bearing, the connecting channel can be annular. This ensures that the bearing is always sufficiently in contact with working fluid and thus sufficient cooling and lubrication is ensured.
  • the connecting channel at the pump inlet, on the suction side can be replaced by an inlet channel in the pump cover, at the pump outlet by an outlet.
  • passage channel in the pump body and be formed between the annular channel and outlet channel through at least one opening in the retarder housing.
  • the channel is thus essentially formed by the pump housing parts and the retarder housing parts, wherein sealing elements can be provided between the parts at least in the region of the channel.
  • connection channel ends below the working medium mirror, the inlet into the channel having a lower inlet end, which is positioned as far as possible at the lowest point of the reservoir. Furthermore, the inlet end is preferably positioned as far away from the mouth of the return. Between the inlet end and the return inlet may further be provided a separation in the reservoir. This ensures that only air-free working fluid is pumped into the workspace.
  • Figure 1 is an idle pump in the installed state
  • Figure 2 is a schematic representation of the working fluid circuit of
  • Figure 1 shows an idle pump 25 in the installed state.
  • at least a portion of the working medium is supplied to the bearing 18 by means of the idle pump 25.
  • a portion of the working medium 15 can thus pass through the bearing 18 in the working space 24.
  • the bearing 18 is lubricated and cooled.
  • One another part passes through the flow channel for the braking operation in the working space 24th
  • the idle pump 25 is driven via the shafts 3 and 4, which communicate with each other, so that the impeller 7 always rotates at shaft speed.
  • the pump delivery rate is thus directly related to the speed of the rotor 16.
  • the pump delivery rate is thus adapted to the requirements at the corresponding rotational speeds of the rotor 16.
  • this is constructed in two parts. It consists of the pump body 6 and the pump cover 8.
  • the impeller 7 runs in the pump chamber between the pump body 6 and the pump cover 8. It is slidably mounted on the shaft 4 so that it can move freely in the axial direction. Axial movements of the shafts 3, 4 thus have no force influence on the impeller 7.
  • the installation of the idle pump 25 takes place in the following order.
  • the seal 9 and the pump body 6 are inserted into the stator housing part 5.
  • the impeller 7 is used and the pump housing is closed with the pump cover 8.
  • the screwing takes place between the pump cover 8 and the stator housing part 5, so that the pump body 6 is clamped between the stator housing part 5 and the pump cover 8.
  • the working medium reservoir 23 can be part of the retarder housing 2, so that the working medium passes directly from the working medium reservoir 23 to the idling pump 25.
  • the working medium 15 is sucked from the working fluid reservoir 23 via the connecting channel 19, which may contain a throttle, sucked by the idling pump 25 and pumped into the working space 24.
  • the working medium flow is divided behind the idle pump 25.
  • a part of the working medium 15 takes the way through the bearing 18 in the working space 24, a second part of the working medium 15 passes through the feed channel 27 into the working space 24.
  • the feed channel 27 is the channel through which the working fluid 24 in the braking operation the working space 24th is supplied.
  • Excessive working medium 15 is passed back into the working-medium reservoir 23 via a scooping device and the return duct 20. Since this recycled working fluid 15 may contain air, devices may be provided in the return channel 20, which vent the working fluid. Furthermore, it may be provided that the return channel 20 terminates in a region of the working medium reservoir 23, which is spaced as far as possible from the suction point for the working medium. An additional delimitation can be realized by means of a memory separation 26 or partial separation.
  • Another option is to guide the recycled working fluid 15 before returning it to the working fluid reservoir 23 via the radiator 21 or via a separate radiator and thus to cool it.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)

Abstract

L'invention concerne une machine hydrodynamique, en particulier un retardateur (1) hydrodynamique, comprenant un boîtier de retardateur (2), un rotor (16) et un stator (17). Le rotor (16) et le stator (17) forment l'un avec l'autre un espace de travail (24), qui peut être rempli d'un milieu de travail (15) selon l'état de fonctionnement de la machine. Le rotor (16) est disposé sur un arbre (3) installé de manière à pouvoir tourner, qui est installé au moins d'un côté à l'intérieur du boîtier de retardateur (2) au moyen d'un palier (18). La machine comprend par ailleurs une pompe à vide (25), au moyen de laquelle le milieu de travail (15) peut être pompé par un conduit de liaison (19) depuis un réservoir de milieu de travail (23) dans l'espace de travail (24). L'invention vise à améliorer la sécurité de fonctionnement dans le mode sans freinage. A cet effet, le conduit de liaison est formé au moins en partie par le palier (18) de sorte que le palier (18) est refroidi et/ou lubrifié au moins en partie par le milieu de travail (15) refoulé par la pompe à vide (25).
PCT/EP2014/056242 2013-04-18 2014-03-28 Retardateur comprenant une pompe à vide WO2014170113A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201480021793.3A CN105189225B (zh) 2013-04-18 2014-03-28 带有空转泵的减速器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013207001.2 2013-04-18
DE201310207001 DE102013207001A1 (de) 2013-04-18 2013-04-18 Retarder mit Leerlaufpumpe

Publications (1)

Publication Number Publication Date
WO2014170113A1 true WO2014170113A1 (fr) 2014-10-23

Family

ID=50390097

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/056242 WO2014170113A1 (fr) 2013-04-18 2014-03-28 Retardateur comprenant une pompe à vide

Country Status (3)

Country Link
CN (1) CN105189225B (fr)
DE (1) DE102013207001A1 (fr)
WO (1) WO2014170113A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114787005A (zh) * 2019-12-12 2022-07-22 福伊特专利有限公司 具有热交换器的减速器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105909960A (zh) * 2016-06-21 2016-08-31 陕西法士特齿轮有限责任公司 一种液力缓速器空转强制润滑系统
DE102017128366A1 (de) * 2017-11-30 2019-06-06 Voith Patent Gmbh Ölversorgung für Anfahr- und Retardermodul
CN107939866A (zh) * 2017-12-25 2018-04-20 深圳市特尔佳科技股份有限公司 液力缓速器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1289313A (fr) * 1968-11-09 1972-09-13
DE102008049283A1 (de) * 2008-09-26 2010-04-29 Voith Patent Gmbh Hydrodynamische Maschine und Verfahren zum Betreiben derselben
EP2258593A2 (fr) * 2009-06-04 2010-12-08 ZF Friedrichshafen AG Boîte à vitesses de véhicule dotée d'un retardateur secondaire
DE102012208244A1 (de) * 2012-05-16 2013-11-21 Zf Friedrichshafen Ag Fahrzeuggetriebe mit einem hydrodynamischen Retarder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10242736A1 (de) * 2002-09-13 2004-03-18 Voith Turbo Gmbh & Co. Kg Antriebseinheit mit einem Retarder
DE10342869B4 (de) * 2003-09-15 2005-07-21 Voith Turbo Gmbh & Co. Kg Kraftfahrzeugantrieb mit einem Wasserretarder
DE102006021331A1 (de) * 2006-05-05 2007-11-15 Voith Turbo Gmbh & Co. Kg Hydrodynamische Maschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1289313A (fr) * 1968-11-09 1972-09-13
DE102008049283A1 (de) * 2008-09-26 2010-04-29 Voith Patent Gmbh Hydrodynamische Maschine und Verfahren zum Betreiben derselben
EP2258593A2 (fr) * 2009-06-04 2010-12-08 ZF Friedrichshafen AG Boîte à vitesses de véhicule dotée d'un retardateur secondaire
DE102012208244A1 (de) * 2012-05-16 2013-11-21 Zf Friedrichshafen Ag Fahrzeuggetriebe mit einem hydrodynamischen Retarder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114787005A (zh) * 2019-12-12 2022-07-22 福伊特专利有限公司 具有热交换器的减速器

Also Published As

Publication number Publication date
DE102013207001A1 (de) 2014-10-23
CN105189225B (zh) 2018-10-30
CN105189225A (zh) 2015-12-23

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