GB1125587A - Improvements in hydraulic reciprocating pumps and motors - Google Patents

Improvements in hydraulic reciprocating pumps and motors

Info

Publication number
GB1125587A
GB1125587A GB4671565A GB4671565A GB1125587A GB 1125587 A GB1125587 A GB 1125587A GB 4671565 A GB4671565 A GB 4671565A GB 4671565 A GB4671565 A GB 4671565A GB 1125587 A GB1125587 A GB 1125587A
Authority
GB
United Kingdom
Prior art keywords
eccentric
shaft
chamber
relative
casing
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
Application number
GB4671565A
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.)
JOHN GEORG ASKVIK
Original Assignee
JOHN GEORG ASKVIK
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 JOHN GEORG ASKVIK filed Critical JOHN GEORG ASKVIK
Publication of GB1125587A publication Critical patent/GB1125587A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
    • F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
    • F01B1/0675—Controlling
    • F01B1/0693—Controlling by changing the phase relationship between two actuating or actuated cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
    • F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
    • F01B1/062—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement the connection of the pistons with an actuating or actuated element being at the inner ends of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
    • F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
    • F01B1/0641—Details, component parts specially adapted for such machines
    • F01B1/0672—Draining of the machine housing; arrangements dealing with leakage fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
    • F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
    • F01B1/0675—Controlling
    • F01B1/0686—Controlling by changing the effective piston stroke
    • F01B1/0689—Controlling by changing the effective piston stroke by changing the excentricity of one element relative to another element

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)

Abstract

1,125,587. Reciprocating pumps and motors. J. G. ASKVIK and R. ENGESETH. Nov. 4, 1965 [Nov. 6, 1964], No. 46715/65. Heading F1A. In a hydraulic pump or motor with at least one pair of cylinders connected to a common chamber 27, the pistons 19, 24 co-operate with eccentrics 16 and 20, respectively, eccentric 16 being secured to the shaft 14 and eccentric 20 being rotatable relative to the shaft to vary the phase of relative piston reciprocation. An extension 21 of the eccentric 16 has a projection (40) Fig. 3 (not shown), which defines together with a casing 33 secured to the shaft 14 a pair of chambers (37A, 37B) connected to sources of liquid under pressure. One chamber (37A) is supplied with liquid under a variable pressure and the other (37B) is connected to the interior of the housing 10, which is at a constant pressure, by means of connection 46 to the inlet channel 28. The eccentric 20 will assume a phase displacement relative to the eccentric 16 in which the forces acting to rotate the eccentric 20 relative to the shaft 14 due to the pressures in the chamber 27 and the chambers (37A, 37B), Fig. 3, in the casing 33 are balanced. Stop means are provided to limit the maximum relative rotation of the eccentric 20 and shaft 14 to 180 in order that the maximum effective capacity of the pump or motor may be varied from zero to a maximum. The liquid supply circuit to the chamber (37A) in the casing 33 under variable pressure may have a safety valve to prevent overload. Each eccentric has a plurality of radially arranged pistons associated therewith, Fig. 2 (not shown). Needle bearings 25 and 36 are provided between the piston shoes 17, 22 and the eccentrics and between the eccentric extension 21 and the shaft 14, respectively.
GB4671565A 1964-11-06 1965-11-04 Improvements in hydraulic reciprocating pumps and motors Expired GB1125587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO15545564A NO117401B (en) 1964-11-06 1964-11-06

Publications (1)

Publication Number Publication Date
GB1125587A true GB1125587A (en) 1968-08-28

Family

ID=19909070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4671565A Expired GB1125587A (en) 1964-11-06 1965-11-04 Improvements in hydraulic reciprocating pumps and motors

Country Status (3)

Country Link
DE (1) DE1528365A1 (en)
GB (1) GB1125587A (en)
NO (1) NO117401B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2453995A1 (en) * 1978-01-30 1980-11-07 Guern Jean Paul Variable flow hydraulic piston pump - has stroke controlled by rotation of eccentric camshaft relative to housing

Also Published As

Publication number Publication date
DE1528365A1 (en) 1969-06-26
NO117401B (en) 1969-08-04

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