WO1996005437A1 - Moteur a rotor dente a alimentation effectuee a travers le couvercle - Google Patents

Moteur a rotor dente a alimentation effectuee a travers le couvercle Download PDF

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Publication number
WO1996005437A1
WO1996005437A1 PCT/DE1995/000993 DE9500993W WO9605437A1 WO 1996005437 A1 WO1996005437 A1 WO 1996005437A1 DE 9500993 W DE9500993 W DE 9500993W WO 9605437 A1 WO9605437 A1 WO 9605437A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
cover
channel
connection
ring piece
Prior art date
Application number
PCT/DE1995/000993
Other languages
German (de)
English (en)
Inventor
Helmut Bauers
Original Assignee
Hydraulik Nord 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 Hydraulik Nord Gmbh filed Critical Hydraulik Nord Gmbh
Publication of WO1996005437A1 publication Critical patent/WO1996005437A1/fr

Links

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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/103—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member one member having simultaneously a rotational movement about its own axis and an orbital movement
    • F04C2/104—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member one member having simultaneously a rotational movement about its own axis and an orbital movement having an articulated driving shaft

Definitions

  • the invention relates to a gerotor motor according to the preamble of claim 1.
  • Gerotor motors of this type are always used where there is no space for conventional and radial oil flow and oil flow removal due to unfavorable installation conditions.
  • a gerotor motor of this type is known in which the pressure oil is fed in and out laterally through the cover
  • this gerotor motor consists of a housing, a control unit accommodated in the housing and a displacement unit flanged on the end face.
  • the displacement unit is composed of a ring piece with an internal toothing and a rotor gear with an external toothing that comes with the ring piece and has one tooth less.
  • the ring piece and the rotor gear are fastened to the housing with a cover and five screws.
  • connection is connected to a corresponding ring channel and the other connection is connected to another ring channel in the control unit.
  • connections are arranged for the inlet and outlet in the cover and within the pitch circle of the fastening screws and are hydraulically connected to one of the ring channels in the housing via oblique, axial and radial channels in the lid and in the housing and through the passage of at least one roller of the ring piece.
  • connection for the inlet and the outlet on a common pitch circle and in a circumferential position corresponding to the loose rollers of the ring piece.
  • the invention eliminates the disadvantages of the prior art in gerotor motors in the version with loose rollers in the ring piece of the displacement unit.
  • Fig. 3 is a view of the Verortician and
  • Fig. 4 shows a partial section of the gerotor motor
  • the gerotor motor is known to consist of a housing 1 with an internal output shaft 2, which on the one hand protrudes from the housing 1 and is of hollow construction, and on the other hand a displacer unit 3 flanged on.
  • the displacer unit 3 sets are composed of a ring piece 4 with seven inner teeth and a rotor gear 5 which meshes with the ring piece 4 and has six outer teeth.
  • the inner teeth of the ring piece 4 are formed by rollers 6, which are inserted loosely and have a central passage 7.
  • Ring piece 4 and rotor gear 5 are fastened to the housing 1 with seven screws 8 and a cover 9.
  • the rotor gear 5 of the displacement unit 3 and the output shaft 2 in the housing 1 are connected to one another in a rotationally fixed manner via a cardan shaft 10.
  • the rotor gear 5 and the output shaft 2 each have an internal toothing and the cardan shaft 10 has a spherical external toothing on both sides.
  • the housing 1 and the output shaft 2 form in the interior two annular channels 11 and 12, which on the one hand have several axial channels 13 in the discharge shaft 2 and several radial and axial channels 14 and 15 in the housing i either with the pressure chambers 16 or the discharge chambers 17 of the displacement unit 3 are connected.
  • the ring channels 11 and 12 each give a connection to a connection 18 DZW.
  • connection 19 the fifth via a directional control valve, not shown, to the tank and the pump.
  • these connections 18 and 19 are located in the cover 9 on a pitch circle, de “compared to the pitch circle of the screws 8 by one certain amount is smaller.
  • the connection of these connections 18 and 19 in the cover 9 to the corresponding ring channel 11 or 12 in the housing 1, as shown in FIGS. 1 and 4, through an inclined channel 20, 20 'in the cover 9, the passage 7 one Roll 6 of the displacer 3 and an axial channel 21, 21 'and a radial channel 22, 22' in the housing 1 realized.
  • a gerotor motor In the neutral position of a directional control valve, not shown, the supply line from the pump to the connection 19 of the gerotor motor is interrupted and the connection of the connection 18 to the tank is established. The gerotor motor is thus at a standstill. After switching the directional valve into a desired position determining the direction of rotation of the gerotor motor, pressure oil reaches, for example, the connection 18 and from there via the inclined channel 20 in the cover 9, via the passage 7 in the roller 6 and via the axial channel 21 unc the radial channel 22 in the housing 1 to the annular channel 12.
  • the pressure oil is distributed to a plurality of axial channels (not shown) in the output shaft 2 and fed to the pressure chambers 16 of the displacement unit via radial and axial channels in the housing 1.
  • the rotor gear 5 sets in a revolving rotary motion and drives the output shaft 2 via the cardan shaft 10.
  • the oil located in the drain chamber 17 is displaced and passes over the axial channels 15 and the radial channels 14 in the housing 1 and the axial channels 13 in the output shaft 2 to the belt channel 11 radial channel 22 'and the axial channel 21' in the housing 1, the passage 7 of the roller 6 and the oblique channel 20 'forwarded to the connection 19.
  • From here there is again a connection to the directional control valve and thus to the tank. Switching the directional valve changes the direction of rotation of the gerotor motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
  • Rotary Pumps (AREA)

Abstract

Dans les moteurs à rotor denté connus, comportant des raccordements d'alimentation et d'évacuation ménagés dans le couvercle du piston déplaceur, ce dernier est fixé au carter avec deux boulons de moins. C'est la raison pour laquelle les moteurs à rotor denté ne peuvent être sollicités par de fortes pressions et sont de ce fait peu performants. L'invention vise à ce que le nouveau moteur à rotor denté ait ses raccordements dans le couvercle et que le piston déplaceur soit fixé avec un nombre de boulons correspondant au nombre de dents de la pièce annulaire du piston déplaceur. A cet effet, les raccordements (18, 19) sont placés dans le cercle primitif des boulons (8) et chacun est relié à un des canaux annulaires (11 ou 12) situés dans le carter (1), par l'intermédiaire d'un canal oblique (20, 20') situé dans le couvercle (9), par l'intermédiaire du passage (7) qui traverse un rouleau (6), par l'intermédiaire d'un canal axial (21, 21') et d'un canal radial (22, 22') situés dans le carter (1). Ce type de moteur à rotor denté est utilisé dans des installations hydrauliques mobiles, notamment là où des conditions de montage défavorables ne permettent pas de configuration radiale des raccordements d'alimentation et d'évacuation.
PCT/DE1995/000993 1994-08-10 1995-07-31 Moteur a rotor dente a alimentation effectuee a travers le couvercle WO1996005437A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944428270 DE4428270C1 (de) 1994-08-10 1994-08-10 Gerotormotor mit Deckelzuführung
DEP4428270.2 1994-08-10

Publications (1)

Publication Number Publication Date
WO1996005437A1 true WO1996005437A1 (fr) 1996-02-22

Family

ID=6525327

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/000993 WO1996005437A1 (fr) 1994-08-10 1995-07-31 Moteur a rotor dente a alimentation effectuee a travers le couvercle

Country Status (2)

Country Link
DE (1) DE4428270C1 (fr)
WO (1) WO1996005437A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10329271B3 (de) * 2003-06-30 2004-06-09 Bosch Rexroth Ag Verfahren zur Herstellung einer nach dem Gerotorprinzip arbeitenden Verdrängereinheit für hydraulische Lenkeinrichtungen und für Hydraulikmotore

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452014A1 (fr) * 1979-03-20 1980-10-17 Danfoss As Machine hydraulique a piston rotatif a axe interieur
US5100310A (en) * 1990-12-26 1992-03-31 Eaton Corporation Gerotor motor and improved valve drive therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452014A1 (fr) * 1979-03-20 1980-10-17 Danfoss As Machine hydraulique a piston rotatif a axe interieur
US5100310A (en) * 1990-12-26 1992-03-31 Eaton Corporation Gerotor motor and improved valve drive therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10329271B3 (de) * 2003-06-30 2004-06-09 Bosch Rexroth Ag Verfahren zur Herstellung einer nach dem Gerotorprinzip arbeitenden Verdrängereinheit für hydraulische Lenkeinrichtungen und für Hydraulikmotore

Also Published As

Publication number Publication date
DE4428270C1 (de) 1996-03-21

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