EP1253322B1 - Machine hydraulique - Google Patents

Machine hydraulique Download PDF

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Publication number
EP1253322B1
EP1253322B1 EP20020009463 EP02009463A EP1253322B1 EP 1253322 B1 EP1253322 B1 EP 1253322B1 EP 20020009463 EP20020009463 EP 20020009463 EP 02009463 A EP02009463 A EP 02009463A EP 1253322 B1 EP1253322 B1 EP 1253322B1
Authority
EP
European Patent Office
Prior art keywords
shaft
housing
hydraulic
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.)
Expired - Lifetime
Application number
EP20020009463
Other languages
German (de)
English (en)
Other versions
EP1253322A3 (fr
EP1253322A2 (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 relates to a hydraulic working machine, in particular for the promotion of hydraulic oil, lubricating oil or like, according to the preamble of claim 1 more defined type.
  • Such a hydraulic machine is out of practice is known and is for example as a drive unit of a Hydraulic system formed.
  • the hydraulic working machine can be part of a per se known hydraulic unit, which is substantially a hydraulic pump, a hydraulic oil reservoir, a Valve block and a designed as an electric motor Drive unit for the hydraulic pump comprises.
  • the hydraulic pump which is attached to the valve block and in one Pump housing is arranged, immersed in the hydraulic oil reservoir and stands with the 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 region of a trained as a coupling space and sealed to the reservoir by means of an O-ring Breakthrough of the valve block.
  • DE 29 44 263 A1 discloses a as Gear machine trained hydraulic machine with a housing that is liquid-tight by a lid is closed. In the lid a hole is formed, by a drive shaft for driving a gear led to the outside. In a radially expanded part the bore is a shaft seal arranged on the an appropriately inserted into the bore fitting part connects. This fitting part, which is used to center the entire gear machine on another machine part is attached by a plurality of screws on the housing cover and represents a total of a complex Zentri mecanics stolenname represents.
  • US 2,883,213 shows a pump with one of several Plate formed pump housing, from which a shaft through a bore is guided to the outside, wherein the bore with an axial seal for sealing the housing in the area the passage of the shaft is formed.
  • the outward guided area of the shaft can with another unit get connected.
  • the problem here is that no action to center such another Assembly are provided opposite the pump housing.
  • a commutator motor is known from DE 44 23 531 A1, having a brush holder 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 rolling bearing.
  • the rolling bearing on the one hand engages in a centering recess of the brush holder plate and on the other hand in a bearing recess of the Drive housing.
  • a hydraulic working machine the features according to the preamble of claim 1, in which the shaft seal as a centering device is formed, wherein the shaft seal on the one hand in the machine housing and on the other hand in the breakthrough of Carrier unit dips, has the advantage that the machine housing in a simple way by means of the shaft seal is centered relative to the carrier assembly, so for example, the shaft and one coupled to the shaft second wave reliably aligned with each other.
  • the invention uses for centering an already required anyway Component and makes the use more expensive additional components, such as one on the machine housing trained passport, superfluous.
  • 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 serving as a Victoria Valve block is attached and by means of a corresponding Building unit forming electric motor drivable is.
  • the electric motor has in the usual way an output shaft, with a drive shaft of the hydraulic pump is coupled.
  • the hydraulic pump is by means of a Centered shaft seal against the valve block, through which are led.
  • the hydraulic working machine it can also be a hydraulic motor, such as a gear motor, act.
  • the shaft then forms the output shaft of the motor.
  • the part of the machine housing which is a first area the shaft seal is limited in the radial direction,
  • an associated with the machine housing Pump cover, and a second area of the shaft seal limiting carrier assembly may be a valve block be.
  • the carrier assembly may also be, for example, a housing a drive unit, such as an electric motor, for be formed a hydraulic pump. In this case, dives the shaft seal on the one hand in the housing of the hydraulic pump and on the other hand into the housing of the drive unit and thus serves to center the hydraulic pump opposite the drive unit.
  • a drive unit such as an electric motor
  • the shaft seal as a seal between the pump housing and be provided the valve block.
  • the sealing effect is here in particular, guaranteed when the shaft seal a Rubber sheath has.
  • the gasket of the breakthrough opposite the environment of the machine housing between the machine housing and the Victoria an O-ring be arranged. If the shaft seal is a rubber jacket optionally, the O-ring may be omitted.
  • the sole FIGURE shows a hydraulic pump attached to a Valve block is attached.
  • the embodiment shown in the figure shows a Hydraulic working machine 1, the one as Shinbautechnik Serving valve block 2 and a hydraulic pump. 3 includes.
  • the hydraulic pump 3 is fixed to the valve block 2 and dives into a pressure medium reservoir, not shown here which is connected via connecting means 4 also attached to the valve block 2.
  • the hydraulic pump 3 is presently designed as a gear pump and has an existing from the housing parts 5, 6 and 7 existing Machine housing, i. Pump housing, on, where the housing part 7 is designed as a pump cover and on the valve block 2 adjacent.
  • the trained as a gear pump hydraulic pump 3 is over a drive shaft 8 driven, which the housing cover. 7 engages and with a coupling portion 9 in a than Clutch space formed opening 10 of the valve block 2 dives.
  • the coupling portion 9 is used for coupling an electric motor, not shown here, by means of in bores 11 engaging screws on the valve block 2 is fastened.
  • the electric motor usually has an output shaft on, via the coupling portion 9 with the drive shaft 8 of the hydraulic pump 3 can be coupled.
  • a shaft seal 14 which faces away from the hydraulic pump 3 with his End immersed in the opening 10 of the valve block 2 and so for centering the hydraulic pump 3 with respect to the Valve block 2 and thus with respect to the not shown here Electric motor is used.
  • a O-ring 15 is arranged to seal the clutch chamber 10 against the volume the pressure medium reservoir, not shown between the pump cover 7 and the valve block 2 . These may be omitted when a shaft seal 14 with rubber sheath is used, since then the shaft seal 14 this Sealing function takes over.
  • the invention is not limited to the illustrated Embodiment is limited. Rather, it can
  • the invention also relates to a geared motor be transmitted to an output shaft, which is a carrier assembly goes through and with a corresponding one Shaft of a driven assembly as accurate as possible must be aligned.

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)

Claims (3)

  1. Machine hydraulique de travail, en particulier pour l'alimentation en huile hydraulique, en huile lubrifiante ou similaire, comprenant au moins un arbre (8) traversant un carter de machine (5,6,7) et une bague d'étanchéité d'arbre (14), ainsi qu'une unité de support (2) contiguë au carter de machine (5,6,7) et présentant un passage (10) de sorte que l'arbre (8) puise être raccordé à une unité correspondante, caractérisée en ce que la bague d'étanchéité d'arbre (14) est conformée en dispositif de centrage, la bague d'étanchéité d'arbre (14) pénétrant d'une part dans le carter de machine (5,6,7) et d'autre part dans le passage (10) de l'unité de support (2).
  2. Machine hydraulique de travail selon la revendication 1, caractérisée en ce que la bague d'étanchéité (14) est prévue comme joint d'étanchéité entre le carter de machine (5,6,7) et l'unité de support (2).
  3. Machine hydraulique de travail selon l'une quelconque des revendications 1 ou 2, caractérisée en ce qu'un joint torique (15) est disposé entre le carter de machine (5,6,7) et l'unité de support (2).
EP20020009463 2001-04-27 2002-04-25 Machine hydraulique Expired - Lifetime EP1253322B1 (fr)

Applications Claiming Priority (2)

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

Publications (3)

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

Family Cites Families (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
EP1253322A3 (fr) 2004-03-03
DE10120711A1 (de) 2002-10-31
DE50204431D1 (de) 2006-02-16
EP1253322A2 (fr) 2002-10-30

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