FR2836301A1 - Unit with electric motor and hydraulic pump e.g. for warehouse vehicle, has two adjacent coaxial motor rotors each interacting with stator, and pump is arranged axially between rotors - Google Patents

Unit with electric motor and hydraulic pump e.g. for warehouse vehicle, has two adjacent coaxial motor rotors each interacting with stator, and pump is arranged axially between rotors Download PDF

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Publication number
FR2836301A1
FR2836301A1 FR0302001A FR0302001A FR2836301A1 FR 2836301 A1 FR2836301 A1 FR 2836301A1 FR 0302001 A FR0302001 A FR 0302001A FR 0302001 A FR0302001 A FR 0302001A FR 2836301 A1 FR2836301 A1 FR 2836301A1
Authority
FR
France
Prior art keywords
rotors
assembly according
electric motor
stator
hydraulic pump
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.)
Pending
Application number
FR0302001A
Other languages
French (fr)
Inventor
Mostafa Yousefi
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.)
Linde GmbH
Original Assignee
Linde 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 Linde GmbH filed Critical Linde GmbH
Publication of FR2836301A1 publication Critical patent/FR2836301A1/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

The unit has an electric motor and a hydraulic pump driven by the electric motor. The electric motor has two adjacent coaxial rotors (8,9) that are coupled together and each interacts with a stator (6,7), so that the hydraulic pump (3) is arranged axially between the rotors. The electric motor is in the form of an axial field motor of disk rotor construction.

Description

<Desc/Clms Page number 1> <Desc / Clms Page number 1>

Domaine de l'invention
La présente invention concerne un ensemble comprenant un moteur électrique et une pompe hydraulique entraînée par celui-ci. Field of the invention
The present invention relates to an assembly comprising an electric motor and a hydraulic pump driven by the latter.

De tels ensembles sont déjà connus selon les documents DE 41 20 665 Al et DE 198 17 162. Selon ces documents, la pompe hydraulique est prévue par exemple radialement à l'intérieur du rotor du moteur électrique (document DE 198 17 162 Al) ou encore la pompe se trouve axialement au voisinage immédiat du moteur électrique dans un boîtier commun (DE 41 20 665 Al).  Such assemblies are already known according to the documents DE 41 20 665 A1 and DE 198 17 162. According to these documents, the hydraulic pump is provided for example radially inside the rotor of the electric motor (document DE 198 17 162 Al) or the pump is also located axially in the immediate vicinity of the electric motor in a common housing (DE 41 20 665 Al).

But de l'invention
La présente invention a pour but de développer un ensemble correspondant au type défini ci-dessus dont la construction soit simple et l'encombrement réduit. Purpose of the invention
The object of the present invention is to develop an assembly corresponding to the type defined above, the construction of which is simple and the size reduced.

Exposé de l'invention
Ce problème est résolu selon l'invention par un ensemble caractérisé en ce que le moteur électrique comporte deux rotors installés coaxialement l'un à côté de l'autre, qui sont couplés l'un à l'autre et qui coopèrent chacun avec un stator, la pompe hydraulique étant installée axialement entre les rotors. Statement of the invention
This problem is solved according to the invention by an assembly characterized in that the electric motor comprises two rotors installed coaxially one next to the other, which are coupled to each other and which each cooperate with a stator , the hydraulic pump being installed axially between the rotors.

La caractéristique essentielle de l'invention consiste à composer le moteur électrique à l'aide de deux demi-moteurs et d'installer la pompe hydraulique entre ceux-ci. L'intégration selon l'invention de la pompe hydraulique dans le moteur électrique permet, d'une part, une construction compacte, et, d'autre part, un degré d'automatisation très poussé dans la fabrication et le montage.  The essential characteristic of the invention consists in composing the electric motor using two half-motors and in installing the hydraulic pump therebetween. The integration according to the invention of the hydraulic pump in the electric motor allows, on the one hand, a compact construction, and, on the other hand, a very high degree of automation in manufacturing and assembly.

Selon un développement avantageux de l'invention, le moteur électrique est un moteur à champ axial, dont le rotor est en forme de disque et axialement entre les stators prévus aux extrémités de l'ensemble et les rotors adjacents de ceux-ci vers l'intérieur, on forme chaque fois un entrefer. Cela permet d'obtenir un coefficient de remplissage de cuivre, élevé, et ainsi un bon comportement thermique.  According to an advantageous development of the invention, the electric motor is an axial field motor, the rotor of which is in the form of a disc and axially between the stators provided at the ends of the assembly and the adjacent rotors thereof towards the inside, we create an air gap each time. This makes it possible to obtain a high copper filling coefficient, and thus a good thermal behavior.

De manière avantageuse, il est prévu un boîtier divisé transversalement à l'axe de rotation des rotors et dans chaque moitié du boîtier on a un stator et un rotor. Cela permet de monter de manière simple l'ensemble selon l'invention.  Advantageously, there is provided a housing divided transversely to the axis of rotation of the rotors and in each half of the housing there is a stator and a rotor. This allows the assembly according to the invention to be mounted in a simple manner.

Dans ce contexte il est également avantageux que les deux stators soient vissés chaque fois à la moitié de boîtier correspondante.  In this context it is also advantageous that the two stators are screwed each time to the corresponding half of the housing.

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Pour réduire les travaux de montage il est avantageux que les stators se composent de bobines séparées pré-bobinées.  To reduce assembly work, it is advantageous for the stators to consist of separate pre-wound coils.

Les rotors sont avantageusement munis d'aimants permanents collés.  The rotors are advantageously provided with glued permanent magnets.

Il est particulièrement avantageux que le moteur électrique soit symétrique par rapport à un plan perpendiculaire à l'axe de rotation.  It is particularly advantageous for the electric motor to be symmetrical with respect to a plane perpendicular to the axis of rotation.

Cela permet alors d'utiliser, pour les deux demi-moteurs, des pièces identiques et ainsi interchangeables (stators, rotors, moitiés de boîtier). This then makes it possible to use, for the two half-motors, identical and thus interchangeable parts (stators, rotors, housing halves).

Il est en outre avantageux du point de vue de la fabrication que chaque demi-moteur, composé d'un rotor et de son stator, soit un moteur monophasé.  It is also advantageous from the manufacturing point of view for each half-motor, composed of a rotor and its stator, to be a single-phase motor.

Selon un développement de l'invention, la pompe hydraulique est une pompe à engrenages. Il est toutefois également possible d'utiliser d'autres types de pompes.  According to a development of the invention, the hydraulic pump is a gear pump. However, it is also possible to use other types of pumps.

Les deux rotors sont avantageusement couplés mécaniquement et cela avec un déphasage de 90 .  The two rotors are advantageously mechanically coupled and this with a phase shift of 90.

L'ensemble selon l'invention convient tout particulièrement pour servir d'entraînement hydraulique pour le circuit hydraulique de levage et/ou de direction d'un chariot transporteur.  The assembly according to the invention is particularly suitable for serving as a hydraulic drive for the hydraulic lifting and / or steering circuit of a transporting carriage.

Dessins
La présente invention sera décrite ci-après de manière plus détaillée à l'aide d'un exemple de réalisation représenté schématiquement dans l'unique figure annexée. drawings
The present invention will be described below in more detail with the aid of an embodiment shown schematically in the single appended figure.

Description d'un mode de réalisation
L'ensemble selon l'invention comprend un moteur électrique formé de deux demi-moteurs électriques 1, 2 installés coaxialement l'un à côté de l'autre. Entre ces deux demi-moteurs se trouve une pompe hydraulique 3. Dans le présent exemple cette pompe est une pompe à engrenages. Les composants indiqués ci-dessus sont assemblés pour former un ensemble constituant par exemple un entraînement électro-hydraulique du circuit de levage et/ou de guidage d'un chariot transporteur. Description of an embodiment
The assembly according to the invention comprises an electric motor formed by two electric half-motors 1, 2 installed coaxially one next to the other. Between these two half-motors is a hydraulic pump 3. In the present example, this pump is a gear pump. The components indicated above are assembled to form an assembly constituting for example an electro-hydraulic drive of the lifting and / or guiding circuit of a transporting carriage.

Les deux demi-moteurs 1, 2, réalisés sous la forme de moteur à champ axial et à rotor en forme de disque, ont chacun une moitié de boîtier 4,5, logeant un stator 6,7 et un rotor 8,9. Les stators 6,7 sont de préférence vissés aux moitiés de boîtier 4,5 et comportent des bobines séparées S, pré-bobinées. Les rotors 8,9, munis d'aimants permanents collés P, sont couplés mécaniquement l'un à l'autre par un manchon à denture intérieure 10.  The two half-motors 1, 2, produced in the form of an axial field motor and a disk-shaped rotor, each have a housing half 4.5, housing a stator 6.7 and a rotor 8.9. The stators 6,7 are preferably screwed to the housing halves 4,5 and include separate coils S, pre-wound. The rotors 8, 9, fitted with glued permanent magnets P, are mechanically coupled to each other by a sleeve with internal teeth 10.

<Desc/Clms Page number 3> <Desc / Clms Page number 3>

Un élément de refoulement 11 de la pompe hydraulique 3 est fixé sur le manchon 10. Cette pompe 3 est logée dans un corps de pompe 12 fixé par les moitiés assemblées 4,5 du moteur électrique.  A delivery element 11 of the hydraulic pump 3 is fixed on the sleeve 10. This pump 3 is housed in a pump body 12 fixed by the assembled halves 4,5 of the electric motor.

Les deux demi-moteurs 1,2, symétriques, plans, l'un par rapport à l'autre, sont constitués chacun par un moteur monophasé et les deux rotors 8,9 sont déphasés de 90 . The two symmetrical, planar half-motors 1,2, one with respect to the other, each consist of a single-phase motor and the two rotors 8, 9 are phase-shifted by 90.

Claims (11)

REVENDICATIONS 1 ) Ensemble comprenant un moteur électrique et une pompe hydraulique entraînée par celui-ci, caractérisé en ce que le moteur électrique comporte deux rotors (8,9) installés coaxialement l'un à côté de l'autre, qui sont couplés l'un à l'autre et qui coopèrent chacun avec un stator (6,7), la pompe hydraulique (3) étant installée axialement entre les rotors (8,9).  1) Assembly comprising an electric motor and a hydraulic pump driven by it, characterized in that the electric motor comprises two rotors (8, 9) installed coaxially one next to the other, which are coupled to the one to the other and which each cooperate with a stator (6,7), the hydraulic pump (3) being installed axially between the rotors (8,9). 2 ) Ensemble selon la revendication 1, caractérisé en ce que les moteurs électriques sont des moteurs à champ axial à rotors en forme de disques, et avec chaque fois un entrefer formé axialement entre les stators (6,7) montés aux extrémités de l'ensemble et les rotors (8,9) adjacents aux stators du côté intérieur.  2) An assembly according to claim 1, characterized in that the electric motors are axial field motors with disc-shaped rotors, and with each time an air gap formed axially between the stators (6,7) mounted at the ends of the together and the rotors (8, 9) adjacent to the stators on the inner side. 3 ) Ensemble selon la revendication 1 ou 2, caractérisé par un boîtier divisé transversalement à l'axe de rotation des rotors (8,9), avec dans chaque moitié de boîtier (4,5) un stator (6,7) et un rotor (8,9).  3) An assembly according to claim 1 or 2, characterized by a housing divided transversely to the axis of rotation of the rotors (8,9), with in each housing half (4,5) a stator (6,7) and a rotor (8,9). 4 ) Ensemble selon la revendication 3, caractérisé en ce que les deux stators (6,7) sont vissés chacun à une moitié de boîtier associée (4,5).  4) An assembly according to claim 3, characterized in that the two stators (6,7) are each screwed to a half of associated housing (4,5). 5 ) Ensemble selon l'une des revendications 2 à 4, caractérisé en ce que les stators (6,7) ont des bobines séparées, pré-bobinées.  5) Assembly according to one of claims 2 to 4, characterized in that the stators (6,7) have separate coils, pre-wound. 6 ) Ensemble selon l'une des revendications 1 à 5, caractérisé en ce que les rotors (8,9) comportent des aimants permanents collés.  6) Assembly according to one of claims 1 to 5, characterized in that the rotors (8,9) have permanent magnets bonded. 7 ) Ensemble selon l'une des revendications 1 à 6, caractérisé en ce que le moteur électrique est symétrique plan par rapport à un plan perpendiculaire à l'axe de rotation.  7) Assembly according to one of claims 1 to 6, characterized in that the electric motor is symmetrical plane with respect to a plane perpendicular to the axis of rotation. <Desc/Clms Page number 5> <Desc / Clms Page number 5> 8 ) Ensemble selon l'une des revendications 1 à 7, caractérisé en ce que chaque demi-moteur (1, 2), composé d'un rotor (8,9) et d'un stator (6,7), est un moteur monophasé.  8) Assembly according to one of claims 1 to 7, characterized in that each half-motor (1, 2), composed of a rotor (8,9) and a stator (6,7), is a single-phase motor. 9 ) Ensemble selon l'une des revendications 1 à 8, caractérisé en ce que la pompe hydraulique (3) est une pompe à engrenages.  9) Assembly according to one of claims 1 to 8, characterized in that the hydraulic pump (3) is a gear pump. 10 ) Ensemble selon l'une des revendications 1 à 9, caractérisé en ce que les deux rotors (8,9) sont couplés mécaniquement et sont déphasés l'un par rapport à l'autre de 90 . 10) Assembly according to one of claims 1 to 9, characterized in that the two rotors (8,9) are mechanically coupled and are phase shifted relative to each other by 90. 11 ) Ensemble selon l'une des revendications 1 à 10, caractérisé en ce qu' il est appliqué comme entraînement électro-hydraulique au circuit hydraulique de levage et/ou de guidage d'un chariot transporteur.11) An assembly according to one of claims 1 to 10, characterized in that it is applied as an electro-hydraulic drive to the hydraulic circuit for lifting and / or guiding a transport carriage.
FR0302001A 2002-02-20 2003-02-19 Unit with electric motor and hydraulic pump e.g. for warehouse vehicle, has two adjacent coaxial motor rotors each interacting with stator, and pump is arranged axially between rotors Pending FR2836301A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2002107018 DE10207018A1 (en) 2002-02-20 2002-02-20 Unit with an electric motor and a hydraulic pump

Publications (1)

Publication Number Publication Date
FR2836301A1 true FR2836301A1 (en) 2003-08-22

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Family Applications (1)

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FR0302001A Pending FR2836301A1 (en) 2002-02-20 2003-02-19 Unit with electric motor and hydraulic pump e.g. for warehouse vehicle, has two adjacent coaxial motor rotors each interacting with stator, and pump is arranged axially between rotors

Country Status (2)

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DE (1) DE10207018A1 (en)
FR (1) FR2836301A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008022726A1 (en) * 2006-08-25 2008-02-28 Busch Produktions Gmbh Rotating-slide vacuum pump or compressor of block design having a disc-rotor synchronous motor which is mounted on flying bearings

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4882211B2 (en) * 2004-08-06 2012-02-22 日産自動車株式会社 Axial gap motor structure
DE102011103493A1 (en) 2011-06-03 2012-12-06 Linde Material Handling Gmbh Electric machine e.g. permanent magnet synchronous machine, has stator units supported at stator carrier, where stator carrier and stator units are penetrated through shaft, rotor unit secured at ends of shaft, and pump arranged in carrier
DE102016103051A1 (en) * 2016-02-22 2017-08-24 Gkn Sinter Metals Engineering Gmbh pump assembly
DE102016113366A1 (en) 2016-07-20 2018-01-25 Weber-Hydraulik Gmbh hydraulic power unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB580614A (en) * 1944-07-07 1946-09-13 Maldwyn Lewis Thomas Improved combined gear wheel pump and electric motor unit
GB1230562A (en) * 1967-04-28 1971-05-05
USH1966H1 (en) * 1997-08-28 2001-06-05 The United States Of America As Represented By The Secretary Of The Navy Integrated motor/gear pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB580614A (en) * 1944-07-07 1946-09-13 Maldwyn Lewis Thomas Improved combined gear wheel pump and electric motor unit
GB1230562A (en) * 1967-04-28 1971-05-05
USH1966H1 (en) * 1997-08-28 2001-06-05 The United States Of America As Represented By The Secretary Of The Navy Integrated motor/gear pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008022726A1 (en) * 2006-08-25 2008-02-28 Busch Produktions Gmbh Rotating-slide vacuum pump or compressor of block design having a disc-rotor synchronous motor which is mounted on flying bearings

Also Published As

Publication number Publication date
DE10207018A1 (en) 2003-08-28

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