EP1253322A2 - Machine hydraulique - Google Patents

Machine hydraulique Download PDF

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Publication number
EP1253322A2
EP1253322A2 EP02009463A EP02009463A EP1253322A2 EP 1253322 A2 EP1253322 A2 EP 1253322A2 EP 02009463 A EP02009463 A EP 02009463A EP 02009463 A EP02009463 A EP 02009463A EP 1253322 A2 EP1253322 A2 EP 1253322A2
Authority
EP
European Patent Office
Prior art keywords
shaft
hydraulic
housing
pump
valve block
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
EP02009463A
Other languages
German (de)
English (en)
Other versions
EP1253322B1 (fr
EP1253322A3 (fr
Inventor
Wilhelm Dworak
Rudolf Nedorost
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 EP1253322A2 publication Critical patent/EP1253322A2/fr
Publication of EP1253322A3 publication Critical patent/EP1253322A3/fr
Application granted granted Critical
Publication of EP1253322B1 publication Critical patent/EP1253322B1/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
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • 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

Definitions

  • the invention is based on a hydraulic machine, especially for the promotion of hydraulic oil, lubricating oil or the like, according to the preamble of claim 1 defined in more detail.
  • Such a hydraulic working machine is from practice is known and is for example as a drive unit Hydraulic system trained.
  • the hydraulic working machine can be part of a se known hydraulic unit, which is essentially a hydraulic pump, a hydraulic oil reservoir, a Valve block and one designed as an electric motor Includes drive unit for the hydraulic pump.
  • the hydraulic pump which is attached to the valve block and in one Pump housing is arranged, immersed in the hydraulic oil reservoir and is also on the valve block attached drive unit in operative connection, that an output shaft of the drive unit with a drive shaft the hydraulic pump is coupled.
  • the coupling takes place in the area of a coupling chamber and sealed from the storage container by means of an O-ring Breakthrough of the valve block.
  • the fitting is formed on the pump housing and engages in a recess in the valve block.
  • a fit on the pump housing is a cost-intensive measure.
  • a commutator motor is known from DE 44 23 531 A1, which has a brush support plate which on a Drive housing of a hydraulic pump is flanged.
  • the Brush support plate is penetrated by a rotor shaft, which protrudes into the drive housing.
  • the rotor shaft is mounted in a roller bearing.
  • the roller bearing on the one hand engages in a centering recess in the brush support plate and on the other hand in a bearing recess of the Drive housing.
  • the hydraulic working machine according to the invention with the Features according to the preamble of claim 1, which the shaft seal serves as a centering device has the advantage that on a trained on the machine housing A fit can be dispensed with, because the machine housing is opposite the Centering unit so that the shaft and a second shaft coupled with the shaft are aligned.
  • the hydraulic working machine according to the invention can in an advantageous embodiment, for example a pump unit represent in which a trained as a gear pump Hydraulic pump on a serving as a support unit Valve block is attached and by means of a corresponding one Unit forming electric motor can be driven is.
  • the electric motor has an output shaft in the usual way, the one with a drive shaft of the hydraulic pump is coupled.
  • the hydraulic working machine can also be a hydraulic motor, like a gear motor, act.
  • the shaft then forms the output shaft of the motor.
  • the hydraulic Working machine serves the shaft sealing ring such as a centering device that he on the one hand in the machine housing and on the other hand in the breakthrough of the Carrier assembly immersed.
  • first area of the shaft seal in the radial Direction from the machine housing for example one the pump cover assigned to the machine housing, and a second area of the shaft seal from the carrier assembly limited, which can be a valve block.
  • the carrier assembly can also be of a housing, for example a drive unit, such as an electric motor, for a hydraulic pump may be formed.
  • a drive unit such as an electric motor
  • a hydraulic pump for a hydraulic pump
  • the shaft sealing ring as a seal between the pump housing and the valve block.
  • the sealing effect is there especially ensured if the shaft seal is a Has rubber sheathing.
  • an O-ring be arranged. If the shaft seal is a rubber jacket the O-ring can be omitted if necessary.
  • the only figure shows a hydraulic pump on one Valve block is attached.
  • the embodiment shown in the figure shows one hydraulic work machine 1, the one as a carrier assembly serving valve block 2 and a hydraulic pump 3 includes.
  • the hydraulic pump 3 is attached to the valve block 2 and dips into a pressure medium reservoir, not shown here one, which via connecting means 4 is also attached to the valve block 2.
  • the hydraulic pump 3 is designed as a gear pump and has one consisting of the housing parts 5, 6 and 7 Machine housing, i.e. Pump housing, on the housing part 7 is designed as a pump cover and on the valve block 2 adjoins.
  • the hydraulic pump 3 designed as a gear pump is about a drive shaft 8 which drives the housing cover 7 reaches through and with a coupling area 9 in a Coupling space formed breakthrough 10 of the valve block 2 dips.
  • the coupling area 9 is used for coupling an electric motor, not shown here, which means in holes 11 engaging screws on the valve block 2 is attachable.
  • the electric motor usually has an output shaft on the coupling area 9 with the drive shaft 8 of the hydraulic pump 3 can be coupled.
  • a ring-shaped enclosing the drive shaft 8 Recess 12 formed at the bottom of the Centering disk 13 enclosing drive shaft 8 for guidance the drive shaft 8 is arranged.
  • a shaft sealing ring is immersed in the recess 12 14 a, the one facing away from the hydraulic pump 3 Immersed in the opening 10 of the valve block 2 at the end and so for centering the hydraulic pump 3 relative to the Valve block 2 and thus compared to that not shown here Serves electric motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
EP20020009463 2001-04-27 2002-04-25 Machine hydraulique Expired - Lifetime EP1253322B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001120711 DE10120711A1 (de) 2001-04-27 2001-04-27 Hydraulische Arbeitsmaschine
DE10120711 2001-04-27

Publications (3)

Publication Number Publication Date
EP1253322A2 true EP1253322A2 (fr) 2002-10-30
EP1253322A3 EP1253322A3 (fr) 2004-03-03
EP1253322B1 EP1253322B1 (fr) 2005-10-05

Family

ID=7682960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020009463 Expired - Lifetime EP1253322B1 (fr) 2001-04-27 2002-04-25 Machine hydraulique

Country Status (2)

Country Link
EP (1) EP1253322B1 (fr)
DE (2) DE10120711A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883213A (en) * 1956-05-15 1959-04-21 Rolf H W Kroekel Pump
DE2944263A1 (de) * 1979-11-02 1981-05-27 Robert Bosch Gmbh, 7000 Stuttgart Zahnradmaschine (pumpe oder motor)
DE8006057U1 (de) * 1980-03-06 1981-09-17 Robert Bosch Gmbh, 7000 Stuttgart Zahnradmaschine (pumpe oder hydromotor)
DE3035663A1 (de) * 1980-09-20 1982-05-13 Robert Bosch Gmbh, 7000 Stuttgart Zahnradmaschine (pumpe oder motor)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883213A (en) * 1956-05-15 1959-04-21 Rolf H W Kroekel Pump
DE2944263A1 (de) * 1979-11-02 1981-05-27 Robert Bosch Gmbh, 7000 Stuttgart Zahnradmaschine (pumpe oder motor)
DE8006057U1 (de) * 1980-03-06 1981-09-17 Robert Bosch Gmbh, 7000 Stuttgart Zahnradmaschine (pumpe oder hydromotor)
DE3035663A1 (de) * 1980-09-20 1982-05-13 Robert Bosch Gmbh, 7000 Stuttgart Zahnradmaschine (pumpe oder motor)

Also Published As

Publication number Publication date
EP1253322B1 (fr) 2005-10-05
DE10120711A1 (de) 2002-10-31
EP1253322A3 (fr) 2004-03-03
DE50204431D1 (de) 2006-02-16

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