EP0062747A2 - Moteur hydraulique à engrenages - Google Patents

Moteur hydraulique à engrenages Download PDF

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Publication number
EP0062747A2
EP0062747A2 EP82101374A EP82101374A EP0062747A2 EP 0062747 A2 EP0062747 A2 EP 0062747A2 EP 82101374 A EP82101374 A EP 82101374A EP 82101374 A EP82101374 A EP 82101374A EP 0062747 A2 EP0062747 A2 EP 0062747A2
Authority
EP
European Patent Office
Prior art keywords
bearing
gear
bearing bodies
gear motor
pressure
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.)
Granted
Application number
EP82101374A
Other languages
German (de)
English (en)
Other versions
EP0062747A3 (en
EP0062747B1 (fr
Inventor
Wilhelm Dworak
Karl-Heinz Dipl.-Ing. Müller
Siegfried Mayer
Wolfgang Talmon
Günter Wolff
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.)
Robert Bosch GmbH
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 EP0062747A2 publication Critical patent/EP0062747A2/fr
Publication of EP0062747A3 publication Critical patent/EP0062747A3/de
Application granted granted Critical
Publication of EP0062747B1 publication Critical patent/EP0062747B1/fr
Expired 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
    • 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

Definitions

  • the invention relates to a gear motor according to the preamble of the main claim.
  • a gear motor in addition to the bearing bodies, a pressure plate is provided in the housing, on which pressure fields are built up in cooperation with a seal arranged in the housing cover, which act on the bearing body via the pressure plate and presses it sealingly against the gear side surfaces.
  • Such an arrangement is particularly suitable for a reversible gear motor, since the pressure fields are always applied on the correct side.
  • the arrangement is complex since it requires parts specially designed for a gear motor.
  • the gear motor according to the invention with the characterizing features of the main claim has the advantage that no special parts are necessary to achieve the same purpose, i.e. The parts required for this also occur with gear pumps, which means that inventory can be reduced considerably.
  • FIG. 1 shows a longitudinal section through a gear motor
  • FIG. 2 shows a section along II-II according to FIG. 1
  • FIG. 3 shows a section along III-III according to FIG. 1
  • FIG. 4 shows a section along IV-IV according to FIG. 1
  • FIG. 5 shows a section along VV of Figure 1 in a somewhat simplified representation.
  • the gear motor has a middle housing part 10, which is closed on both sides by covers 11, 12.
  • the middle part of the housing has a continuous recess 13, the cross section of which has the shape of an eight and in which toothed wheels 14, 15 mesh in external engagement.
  • the shaft journals 16, 17 of the gearwheels facing the cover 11 are mounted in approximately bush-shaped bearing bodies 18, 19. These bearing bodies form the bearing side A.
  • the shaft journals 22, 23 of the gearwheels facing the cover 12 are mounted in the same bearing bodies 24, 25 which form the bearing side B.
  • the shaft journal 23 has an extension 26 which penetrates through a cover bore 27 to the outside and forms the output shaft of the gear motor.
  • the seal on the extension 26 is provided by a sealing arrangement 28 in the cover bore 27.
  • the bearing bodies have a slight axial play X in the recess 13 of the middle part of the housing.
  • the two bearing bodies on the respective bearing sides A and B could also be designed as one-piece bearing bodies, namely as so-called glasses.
  • a groove 30 running in one go is formed, which has approximately the shape of a "three".
  • a seal 31 is arranged, which has the same contour as the groove 30.
  • the "three" - when looking at Figure 3 - is open to the left.
  • a continuous train in a groove 32 is also formed on the cover 12 facing end faces of the bearing bodies 24, 25, which also has the shape of a "Three” and in the one sealing fit - is arranged tung 33rd
  • the "three" - when looking at Figure 4 - is open to the right. From this it can be seen that the seals on the bearing sides A and B are arranged opposite one another.
  • Two holes 35, 36 penetrate into the recess 13 from mutually opposite outer sides of the middle housing part 10 and extend coaxially. They lie at the level of the gearwheels 14, 15. Triangular recesses 37, 38 and 39, 40 are formed between the bearing bodies 18, 19 and 24, 25 and the housing recess 13 over the entire height of the bearing bodies. This creates a connection from the end faces of the bearing bodies facing away from the gearwheel side surfaces to the bores 35, 36.
  • a pressure field D1 is now built up behind the sealing ring 33, ie between the sealing ring and the recess 39, the direction of force of which faces the bore 35 more than the bore 36, based on an imaginary connection connecting the center of the shaft journals Straight line E.
  • a pressure field D2 can also currently build up in front of the seal 31, ie between the recess 37 and the open part of this seal.
  • the pressure field D1 is considerably larger, this axial force P 1 - see FIG.
  • the gear motor can also be supplied with pressure medium under high pressure via the bore 36. Then a large pressure field D3 - see now Figure 3 - builds up between the recess 38 and the back of the seal 31, while a small pressure Field D4 builds up on the open part of the seal 33 - see now FIG. 4 - ie between the recess 40 and the open part of this seal. Again, the force P 2 outweighs the large pressure field, but this time from the other side - see Figure 5. The effect is the same again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
  • Rotary Pumps (AREA)
EP82101374A 1981-04-07 1982-02-24 Moteur hydraulique à engrenages Expired EP0062747B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3113939 1981-04-07
DE19813113939 DE3113939A1 (de) 1981-04-07 1981-04-07 Zahnradmotor

Publications (3)

Publication Number Publication Date
EP0062747A2 true EP0062747A2 (fr) 1982-10-20
EP0062747A3 EP0062747A3 (en) 1983-10-12
EP0062747B1 EP0062747B1 (fr) 1986-01-29

Family

ID=6129530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101374A Expired EP0062747B1 (fr) 1981-04-07 1982-02-24 Moteur hydraulique à engrenages

Country Status (4)

Country Link
US (1) US4455130A (fr)
EP (1) EP0062747B1 (fr)
JP (1) JPS57181902A (fr)
DE (2) DE3113939A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1009196B (el) * 2016-08-31 2018-01-11 Αθανασιος Νικολαου Κοτουπας Νεου τυπου συστημα γραναζιων

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996997A (en) * 1960-05-19 1961-08-22 Borg Warner Reversible hydraulic pump or motor
US3213800A (en) * 1965-05-04 1965-10-26 Webster Electric Co Inc Unitary wear plate and seal
US3891360A (en) * 1973-03-06 1975-06-24 Bosch Gmbh Robert Gear machine with axially movable end wall seal
DE2403319A1 (de) * 1974-01-24 1975-07-31 Bosch Gmbh Robert Zahnradmaschine
DE7500496U (de) * 1975-01-10 1976-07-22 Robert Bosch Gmbh, 7000 Stuttgart Ahnradmaschine (pumpe oder motor)
JPS5543220A (en) * 1978-09-19 1980-03-27 Kayaba Ind Co Ltd Terminal structure of seal to demarcate gear pump or high pressure area and low pressure area in motor
US4311444A (en) * 1979-04-19 1982-01-19 Shumate Donald L Pressure-balancing end plate for a reversible gear pump or motor
DD156056A3 (de) * 1980-12-15 1982-07-28 Guenter Leichsenring Hydrostatische zahnradmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1009196B (el) * 2016-08-31 2018-01-11 Αθανασιος Νικολαου Κοτουπας Νεου τυπου συστημα γραναζιων

Also Published As

Publication number Publication date
DE3113939A1 (de) 1982-11-11
US4455130A (en) 1984-06-19
JPH0138164B2 (fr) 1989-08-11
DE3268735D1 (en) 1986-03-13
JPS57181902A (en) 1982-11-09
EP0062747A3 (en) 1983-10-12
EP0062747B1 (fr) 1986-01-29

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