EP0305785A2 - Moteur hydraulique - Google Patents

Moteur hydraulique Download PDF

Info

Publication number
EP0305785A2
EP0305785A2 EP88113080A EP88113080A EP0305785A2 EP 0305785 A2 EP0305785 A2 EP 0305785A2 EP 88113080 A EP88113080 A EP 88113080A EP 88113080 A EP88113080 A EP 88113080A EP 0305785 A2 EP0305785 A2 EP 0305785A2
Authority
EP
European Patent Office
Prior art keywords
shaft
housing
annular
toothing
face
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
EP88113080A
Other languages
German (de)
English (en)
Other versions
EP0305785A3 (en
EP0305785B1 (fr
Inventor
Rudolf Dipl.-Ing. Fh Kollmuss
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.)
Kinshofer GmbH
Original Assignee
Kinshofer Greiftechnik 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 Kinshofer Greiftechnik GmbH filed Critical Kinshofer Greiftechnik GmbH
Priority to AT88113080T priority Critical patent/ATE72598T1/de
Publication of EP0305785A2 publication Critical patent/EP0305785A2/fr
Publication of EP0305785A3 publication Critical patent/EP0305785A3/de
Application granted granted Critical
Publication of EP0305785B1 publication Critical patent/EP0305785B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump

Definitions

  • the invention relates to a hydraulic motor with a cylindrical housing and a shaft mounted therein with a flange-shaped widened end part, preferably hydraulic internally toothed gear machine with a toothed shaft and an annular piston provided with internal and external toothing, the displacement chambers with the internal toothing of the housing or the toothing of the shaft forms and opens and closes inlet and outlet control openings due to its wobbling movement.
  • Hydraulic internally toothed gear machines of this type are known for example from DE-OS 33 42 131 and the unpublished DE-OS 36 17 313.
  • rotary motors are normally connected to the connecting piece in an oscillating manner, so that the output shaft of the rotary motor carrying the gripper is essentially only stressed in the axial direction by the weight of the gripper and the load taken up.
  • the output shafts of the rotary motors are usually due to inclined roller bearings or other axial forces receiving bearings mounted in the rotary motor housing, so that forces acting on the output shaft in the axial direction can be absorbed without problems.
  • the connection piece carrying the gripper via the rotary motor is pivoted about a horizontal axis in order to expand the working area of the gripper.
  • Inadmissibly high bending moments can, for example, act on the shaft of the hydraulic motor when the lifting device, for example an excavator or the like. via its boom or dipper stick, on which the gripper is supported.
  • the bending moments acting on the motor shaft can become so large that they are permanently deformed and the motor is destroyed.
  • the object of the invention is therefore to provide a hydraulic motor of the type specified at the outset, in which bending moments of impermissible magnitude acting on its output shaft, which are generated, for example, by transverse forces acting on the gripper connected to it, can be avoided.
  • this object is achieved in a hydraulic motor of the generic type in that the housing has an annular flat end face which forms a gap with an annular surface of the flange-shaped widened end part of the shaft, the width of which is only so large that one on the Bending moment acting on the shaft supports the end face on the end part by bending the shaft only in its elastic area.
  • the motor shaft or the output shaft of the motor is protected in a simple manner against inadmissibly high bending moments, which could lead to permanent deformation of the shaft, in that the housing is supported with its annular edge on the flange-shaped widened end part of the shaft .
  • the parts that support each other in the event of overload have a relatively large diameter, so that even high transverse forces can be recorded non-destructively.
  • the motor can usually be blocked due to the frictional forces that occur.
  • the housing is made of cast iron and the flange-shaped widened end part of the shaft made of steel, so that good sliding properties exist between the two parts, which under certain circumstances allow the shaft to spin even when its widened end part is supported on the housing edge. If it is still desirable to turn the shaft even with high transverse forces, it is advisable to provide the end face of the housing edge with an annular groove into which a ring made of bearing metal is inserted.
  • a shaft 2 is supported in the bell-shaped housing 1 one end by a sliding bearing 3 and other ends by an oblique roller rolling bearing 4.
  • the shaft 2 is provided in one piece at its lower end with a flange 5 widened.
  • the bell-shaped housing 1 has at its upper closed end an extension 6 with a transverse bore 7, which is used to attach the housing of the rotary motor to a Outrigger, a dipper stick or the like. of a hoist.
  • the transverse bore 7 forms a bearing bore which is mounted on a corresponding bearing pin of the hoist.
  • a gripper or other tool can be fastened to the flange-widened end part 5 of the shaft 3 in a known manner.
  • the housing 1 is provided at its lower end with a screwed-in housing ring 8 which serves to support the shaft 2 and which has an annular web-like extension 9 with a lower flat end face 10.
  • This end face 10 forms an annular gap with an annular surface 11, parallel to this, of the flange-widened end part 5.
  • the gap has a width of approximately 0.2 mm.
  • the shaft 12 is supported in the two-part bell-like housing 13 by two inclined roller rolling bearings 14, 15. At its lower end, the shaft 12 in turn has a flange-widened end part 15.
  • the lower housing part 13 is provided with a lower annular end face 16, which is provided with a circumferential annular groove 17, into which a ring 18 of bearing metal with a rectangular cross section is inserted.
  • the flange-widened end part is provided below the bearing ring 18 with an annular bead-like elevation 19 with an upper, flat, annular surface. Between the lower plane surface of the bearing ring 18 and the surface of the annular bead 19 there is again a gap of approximately 0.2 mm.
  • the two hydraulic ring piston motors shown in longitudinal section in the figures are of the type described in DE-OS 33 42 131, so that reference can be made to them.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP88113080A 1987-08-31 1988-08-11 Moteur hydraulique Expired - Lifetime EP0305785B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88113080T ATE72598T1 (de) 1987-08-31 1988-08-11 Hydromotor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3729049 1987-08-31
DE3729049A DE3729049C1 (de) 1987-08-31 1987-08-31 Hydromotor

Publications (3)

Publication Number Publication Date
EP0305785A2 true EP0305785A2 (fr) 1989-03-08
EP0305785A3 EP0305785A3 (en) 1989-09-13
EP0305785B1 EP0305785B1 (fr) 1992-02-12

Family

ID=6334886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113080A Expired - Lifetime EP0305785B1 (fr) 1987-08-31 1988-08-11 Moteur hydraulique

Country Status (4)

Country Link
EP (1) EP0305785B1 (fr)
AT (1) ATE72598T1 (fr)
DE (1) DE3729049C1 (fr)
ES (1) ES2028961T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999008000A1 (fr) * 1997-08-12 1999-02-18 Andreas Voulgaris Unite hydraulique a dispositif de fixation pour ensembles additionnels
CN115289087A (zh) * 2022-09-28 2022-11-04 宁波中意液压马达有限公司 一种用于工程车辆抓具的旋转马达

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10309258B4 (de) * 2003-03-03 2006-10-12 Archimedes Voulgaris Hydraulikmotorenbau Gmbh Einrichtung zur Befestigung und zum Drehantrieb eines Greiferwerkzeugs
DE202005009540U1 (de) * 2005-06-17 2006-10-26 Kinshofer Greiftechnik Gmbh & Co. Kg Hydraulischer Drehmotor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021161A (en) * 1976-02-17 1977-05-03 Eaton Corporation Rotary fluid pressure device and thrust absorbing arrangement therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342131A1 (de) * 1983-11-22 1985-06-05 Kinshofer, Alfred, Ing.(grad.), 8160 Miesbach Ringkolbenmaschine
DE3406543A1 (de) * 1984-02-23 1985-09-05 Rudolf 8000 München Braren Verdraengermaschine, insbes. zykloiden-planetengetriebe mit integriertem, hydraulischem motor
DE3617313A1 (de) * 1986-05-23 1987-11-26 Kinshofer Greiftechnik Vorrichtung zur verbindung eines hydraulischen drehmotors

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021161A (en) * 1976-02-17 1977-05-03 Eaton Corporation Rotary fluid pressure device and thrust absorbing arrangement therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999008000A1 (fr) * 1997-08-12 1999-02-18 Andreas Voulgaris Unite hydraulique a dispositif de fixation pour ensembles additionnels
CN115289087A (zh) * 2022-09-28 2022-11-04 宁波中意液压马达有限公司 一种用于工程车辆抓具的旋转马达

Also Published As

Publication number Publication date
ES2028961T3 (es) 1992-07-16
EP0305785A3 (en) 1989-09-13
ATE72598T1 (de) 1992-02-15
EP0305785B1 (fr) 1992-02-12
DE3729049C1 (de) 1989-03-30

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