WO2017182175A1 - Pompe à engrenage intérieur - Google Patents

Pompe à engrenage intérieur Download PDF

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Publication number
WO2017182175A1
WO2017182175A1 PCT/EP2017/054189 EP2017054189W WO2017182175A1 WO 2017182175 A1 WO2017182175 A1 WO 2017182175A1 EP 2017054189 W EP2017054189 W EP 2017054189W WO 2017182175 A1 WO2017182175 A1 WO 2017182175A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
pinion
ring gear
internal gear
abutment pin
Prior art date
Application number
PCT/EP2017/054189
Other languages
German (de)
English (en)
Inventor
Wolf Stahr
Massimiliano Ambrosi
Michael Eisenlauer
Edgar Kurz
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2017182175A1 publication Critical patent/WO2017182175A1/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
    • F04C2/101—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 with a crescent-shaped filler element, located between the inner and outer intermeshing members
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • F04C14/265—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels being obtained by displacing a lateral sealing face
    • 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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • 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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
    • 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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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
    • F04C2/102—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 the two members rotating simultaneously around their respective axes

Definitions

  • the invention relates to an internal gear pump for a hydraulic vehicle brake system having the features of the preamble of claim 1.
  • the internal gear pump is intended in particular for use in a slip-controlled and / or external power vehicle brake system instead of a piston pump usually used there, which often, although not necessarily aptly, is referred to as a return pump.
  • the disclosure document DE 10 2013 201 384 A1 discloses a réelle leopardrad- pump for a slip-controlled hydraulic vehicle brake system, which is intended for installation in a cylindrical countersinking of a hydraulic block slip control of the hydraulic vehicle brake system.
  • the hydraulic block forms a pump housing of the internal gear pump.
  • the internal gear pump has a ring gear and a pinion which is arranged eccentrically in the ring gear so that it meshes with the ring gear.
  • the pinion is rotatably mounted on a pump shaft which is driven to rotate the internal gear pump and rotatably drives the ring gear on its non-rotatable pinion and on the intermeshing with the ring gear pinion.
  • the pinion is an externally toothed gear and the ring gear an internally toothed gear, which are referred to here for clarity and distinction as a pinion and as a ring gear.
  • the pinion and the ring gear define a sickle-shaped pump space therebetween, in which a separator is arranged, abut on the inside and outside of tooth tips of teeth of the pinion and the ring gear, so that the
  • Separator shares the pump room in a suction chamber and a pressure chamber.
  • the suction chamber In one direction of rotation of the pinion and the ring gear is the suction chamber before and the pressure chamber behind the separator.
  • the teeth of the pinion and the ring gear move inside and outside along the separator along and promote in interdental spaces brake fluid or fluid generally from the suction chamber inside and outside of the separator along in the pressure chamber of the
  • the separator of the internal gear pump is supported in a circumferential direction on an abutment pin which passes through the pump chamber transversely. Ends of the abutment pin are held on one side of the pinion and the ring gear in a hole at the bottom of the countersink of the hydraulic block, in which the internal gear pump is installed, and on another side of the pinion and the ring gear in a hole in a lid, the countersink closes.
  • one end of an abutment pin on which a separator of the internal gear pump is supported in a circumferential direction crowned.
  • end is meant a portion of the abutment pin located in an associated hole to hold the abutment pin in a circumferential direction of the internal gear pump and radially to the internal gear pump.
  • Ballig means a circumferential convex elevation.
  • a crown can be realized in one piece with the abutment pin or, for example, by a sleeve with a spherical outer peripheral surface arranged on the end of the pin. The crowning allows pivoting of the end of the abutment pin in the hole in which it is held.
  • the other end of the abutment pin engages a peripheral wall of a hole in which it is held, when the separator is supported on the abutment pin during operation of the internal gear pump.
  • the abutment pin of the internal gear pump according to the invention is supported on both sides of a ring gear, the separator and a pinion of the internal gear pump.
  • the separator is supported in the circumferential direction of the internal gear pump and possibly also radially to the internal gear pump on the abutment pin, which loads the abutment pin transversely to itself.
  • Another advantage of the invention is an angular compensation in an angular alignment error and / or radial offset of the two holes in which the ends of the abutment pin are held by the angular self-alignment of the crowned end of the abutment pin in the associated hole.
  • Figure 1 is an end view of an internal gear pump according to the invention without pump housing
  • Figure 2 is an angled axial section of the internal gear pump along line II - II in Figure 1;
  • Figure 3 is an enlarged functional diagram in the region of an abutment pin of the internal gear pump of Figures 1 and 2 radially from the outside.
  • the internal gear pump 1 according to the invention shown in FIGS. 1 and 2 has a ring gear 2 and a pinion 3 arranged in the ring gear 2 and meshing with the ring gear 2.
  • the ring gear 2 is an internally toothed gear and the pinion 3 an externally toothed gear, which are referred to the unique designation and distinction as a ring gear 2 and 3 as a pinion.
  • the pinion 3 is rotatably with a feather key 4 on a pump shaft 5, wherein a feather key connection is not mandatory for the invention, but the pinion 3 can be arranged non-rotatably on the pump shaft 5 in other ways.
  • the pump shaft 5 is rotationally driven, for which purpose in the illustrated and described embodiment, a gear 6 is pressed onto one end of the pump shaft 5.
  • the non-rotatable on the pump shaft 5 pinion 3 rotates with the pump shaft 5 and drives the meshing with him ring gear 2 also rotating.
  • the ring gear 2 is pressed into a sliding bearing ring 7, which is wider than the ring gear 2 and with which the ring gear 2 is rotatably mounted in a diameter-stepped cylindrical countersinking of a pump housing 8.
  • the Anson- kung is referred to here as installation space 9 for the internal gear pump 1.
  • the pump housing 10 is not shown in FIG.
  • a multi-part separator 1 1 is arranged, which is also sickle-shaped in the illustrated and described embodiment of the invention, but shorter in the circumferential direction than the pump chamber 10.
  • On the separator 1 1 are outside tooth heads of teeth of the ring gear 2 and inside tooth heads of teeth of the pinion 3.
  • the separator 1 1 divides the pump chamber 10 in a suction chamber 12 and a pressure chamber 13.
  • the pressure chamber 12 is located in a rotational direction of the ring gear 2 and the pinion 3 before and the pressure chamber 13 behind the separator 1 1.
  • FIG. 1 An intended direction of rotation of the ring gear 2 and of the pinion 3 is shown in Figure 1 with circular arrows Q.
  • a rotary drive promote the ring gear 2 and the pinion 3 in interdental spaces brake fluid or fluid generally from the suction chamber 12 inside and outside of the separator 1 1 along in the pressure chamber 13. Due to the sickle shape such separators 1 1 as sickles and the internal gear pump 1 as Sickle pump called.
  • the separator 1 1 has an outer part 14 and an inner part 15 which are radially movable relative to each other to a tolerance compensation, so that the outer part 14 rests against the tooth tips of the teeth of the ring gear 2 and the inner part 15 on the tooth tips of the teeth of the pinion 3.
  • a arranged between the outer part 14 and the inner part 15 leaf spring 16 pushes the inner part 14 and the outer part 15 apart.
  • a sealing element 17 seals between the outer part 14 and the inner part 15.
  • the separator 1 1 is supported in the circumferential direction of the internal gear pump 1 from an abutment pin 18, which passes through the pump chamber 10 at a suction-side front end of the separator 1 1 across.
  • the abutment pin 18 may also be arranged elsewhere, for example, a hole of the separator 1 1 enforce (not shown).
  • the abutment pin 18 holds the separator 1 1 in the circumferential direction of the internal gear pump 1 and allows a radial movement of the separator 1 to 1.
  • a catch pin 19 which passes through the separator 1 1 transversely, the separator 1 1 holds on the abutment pin 18.
  • the catch pin 19 is not mandatory for the invention.
  • Ends of the abutment pin 18 are on one side of the ring gear 2 and the pinion 3 in a (blind) hole 20 in a cover 21 and on another side of the ring gear 2 and the pinion 3 in a (blind) hole 22 at a bottom of
  • the lid 21 is inserted into the installation space 9 on an open side and seals the installation space 9.
  • portions of the abutment pin 18 located in the holes 20, 22 are denoted here, not (only) end faces of the abutment pin 18.
  • One end of the abutment pin 18 has an oversize, ie an interference fit in the associated hole 20.
  • the hole 20 in the lid 21 lie- liehe end of the abutment pin 18 has the excess in relation to the hole 20.
  • the other end of the abutment pin 18 is smaller than the associated hole 22, so has a clearance fit.
  • located in the hole 22 in the pump housing 8 end of the abutment pin 18 has the clearance.
  • the end of the abutment pin 18 with the interference fit in the associated hole 20 is spherical, it has in the hole 20 a circumferential rotationally symmetrical convex elevation of its peripheral surface.
  • one end of the abutment pin 18 is pivotable in the hole 20 so that the abutment pin 18 aligns with its other end abutting a peripheral wall of the associated hole 22 at a location of a circumference when the separator 11 is in operation the internal gear pump 1 on the abutment pin 18 is supported.
  • the abutment pin 18 is supported on both sides of the ring gear 2, the separator 1 1 and the pinion 3 in the holes 20, 22 in the pump housing 8 and in the lid 21 from.
  • the crowning of one end of the abutment pin 18 and the pivoting achieved thereby allows compensation of radial offset and / or angular alignment error of the two holes 20, 22.
  • the covers 23 have holes for the passage of the pump shaft 5, the abutment pin 18 and the catch pin 19, whereby they are held axially movable and rotationally fixed.
  • a pressure field 26 Inside a shallow countersink, which extends in a crescent shape over about 2/3 of a length of the separator 1 1 in the circumferential direction to approximately to a pressure chamber side end of the separator 1 1.
  • This countersinking is referred to here as a pressure field 26, it may also be provided in a cover 21 facing the outside of the pressure plate 25 (not shown).
  • Pressure field 26 opens a pump outlet 27, which communicates through a slot 28 in the pressure plate 25 with the pressure chamber 13.
  • the outlet pressure of the internal gear pump 1 prevails, the pressure disk 25 is acted upon on its outside facing the cover 21 with the pressure prevailing in the pressure chamber 13 of the internal gear pump 1 and pressed against end faces of the ring gear 2 and the pinion 3.
  • the pressure plate 25 presses that Ring gear 2 and the pinion 3, both of which are axially movable, against the axial disc 24 on the opposite side of the ring gear 2 and the pinion 3, so that the pump chamber 10 in the region of the separator 1 1 and the pressure chamber 13 is laterally covered.
  • the pump shaft 5 is rotatably mounted with a bearing 29 on a side facing away from the lid 21 in the axial disc 24 and with a bearing 30 in the lid 21.
  • a pump assembly is formed which comprises the pump shaft 5, the pinion 3, the ring gear 2, the bearings 29, 30 of the pump shaft 5, the cover 21 and the axial disk 24 and the pressure disk 25.
  • the pump assembly is preassembled before it is inserted as a whole in the installation space 9 of the pump housing 8 and their function can be checked before inserting into the pump housing 8.
  • the pump housing 8 is formed by a hydraulic block, which is part of a slip control of a hydraulic vehicle brake system.
  • slip control systems are, for example, an anti-lock, a traction slip and / or a driving dynamics or driving stability control (spin control), for which the abbreviations ABS, ASR and FDR or ESP are customary.
  • the internal gear pump 1 serves as a hydraulic pump of the slip control and is hydraulically connected by a not visible in the drawing bore of the hydraulic block with other components of the slip control such as solenoid valves, hydraulic accumulators, dampers and check valves, which are used in recordings of the hydraulic block.
  • solenoid valves hydraulic accumulators
  • dampers and check valves which are used in recordings of the hydraulic block.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

La présente invention concerne une pompe à engrenage intérieur (1) pour un système de freinage hydraulique de véhicule à régulation antipatinage. Selon l'invention, une tige de butée (18) est réalisée de manière bombée à une extrémité et soutient une pièce de séparation (croissant 11) entre un pignon (3) et une couronne (2) de la pompe à engrenage intérieur (1) dans une direction périphérique, et est enfoncée dans un trou (20) d'un couvercle (21) d'un carter de pompe (8). Ce bombement permet une adaptation angulaire lorsque la tige de butée (18) ploie sous l'effet d'une charge transversale.
PCT/EP2017/054189 2016-04-21 2017-02-23 Pompe à engrenage intérieur WO2017182175A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016206790.7A DE102016206790A1 (de) 2016-04-21 2016-04-21 Innenzahnradpumpe
DE102016206790.7 2016-04-21

Publications (1)

Publication Number Publication Date
WO2017182175A1 true WO2017182175A1 (fr) 2017-10-26

Family

ID=58159068

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/054189 WO2017182175A1 (fr) 2016-04-21 2017-02-23 Pompe à engrenage intérieur

Country Status (2)

Country Link
DE (1) DE102016206790A1 (fr)
WO (1) WO2017182175A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110725930B (zh) * 2019-10-21 2021-11-26 中车戚墅堰机车车辆工艺研究所有限公司 齿轮箱及轨道车辆

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1905146A1 (de) * 1969-02-03 1970-10-29 Westinghouse Bremsen U Appbau Verschleissausgleichende Hochdruck-Zahnradpumpe
DE2650908A1 (de) * 1976-11-06 1978-05-11 Bosch Gmbh Robert Innenzahnradmaschine (pumpe oder motor)
DE102013201384A1 (de) * 2013-01-29 2014-07-31 Robert Bosch Gmbh Innenzahnradpumpe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1905146A1 (de) * 1969-02-03 1970-10-29 Westinghouse Bremsen U Appbau Verschleissausgleichende Hochdruck-Zahnradpumpe
DE2650908A1 (de) * 1976-11-06 1978-05-11 Bosch Gmbh Robert Innenzahnradmaschine (pumpe oder motor)
DE102013201384A1 (de) * 2013-01-29 2014-07-31 Robert Bosch Gmbh Innenzahnradpumpe

Also Published As

Publication number Publication date
DE102016206790A1 (de) 2017-10-26

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