GB850783A - Hydrostatic power transmission systems - Google Patents

Hydrostatic power transmission systems

Info

Publication number
GB850783A
GB850783A GB20096/58A GB2009658A GB850783A GB 850783 A GB850783 A GB 850783A GB 20096/58 A GB20096/58 A GB 20096/58A GB 2009658 A GB2009658 A GB 2009658A GB 850783 A GB850783 A GB 850783A
Authority
GB
United Kingdom
Prior art keywords
pumps
motor
pump
pistons
rings
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
GB20096/58A
Inventor
Henry Joel Hamblin
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB20096/58A priority Critical patent/GB850783A/en
Publication of GB850783A publication Critical patent/GB850783A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • F04B1/0536—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units
    • F04B1/0538—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units located side-by-side
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/123—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/128—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the cylinders, e.g. by moving a cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
    • F16H61/444—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation by changing the number of pump or motor units in operation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

850,783. Reciprocating pumps. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 2, 1959 [July 23, 1958], No. 20096/58. Class 102(1). [Also in Group XXIX] A hydrostatic power transmission system comprises a plurality of positive-displacement variable-delivery pumps 10, 11 arranged to deliver fluid under pressure to a motor 20, and at least one cut-off valve 13 whereby the delivery side of the, or each, pump which is inoperative at part-load operation can be cut-off from the delivery side of the, or each, operative pump or pumps, each pump being of the rotatable cylinder-and-piston 23, 24 and non-rotating stroking ring type, the eccentricities of the rings 36, 37 being separately adjustable to vary the delivery of the pumps. The cut-off valves 13, 16 have pistons 46 movable to upper positions in which they connect the inlets 27, 29 of the pumps to pipes 12, 15 connected to the outlet 21 of the motor, and the outlets 28, 30 of the pumps to pipes 14, 17 leading to the inlet to the motor. In their lower positions, the pistons disconnect the pipes 12, 14, 15, 17 and connect the inlet and outlet of each pump together so that fluid is not supplied to the motor. The pistons 46 are moved by quick-throw mechanisms and linkages 53, 54 connected to control levers 50, 52 which are also linked to the stroking rings 36, 37 of the pumps to move the rings about a pivot 41 and separately vary the strokes of the pistons 34, 35 of the pumps in a cylinder block 23 rotatable on a fixed shaft 25. The rings may be moved to reverse the direction of flow from the pumps to reverse the motor 20. In operation, the cutoff valves 13, 16 are actuated consecutively so that one pump delivers fluid to the motor during low-load operation, and both motors during high-load operation. Both control levers may be embodied in a single master control. More than two pumps may be provided each connected to a common motor, and a reservoir and low-pressure pump may be included in the circuit.
GB20096/58A 1958-06-23 1958-06-23 Hydrostatic power transmission systems Expired GB850783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB20096/58A GB850783A (en) 1958-06-23 1958-06-23 Hydrostatic power transmission systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20096/58A GB850783A (en) 1958-06-23 1958-06-23 Hydrostatic power transmission systems

Publications (1)

Publication Number Publication Date
GB850783A true GB850783A (en) 1960-10-05

Family

ID=10140311

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20096/58A Expired GB850783A (en) 1958-06-23 1958-06-23 Hydrostatic power transmission systems

Country Status (1)

Country Link
GB (1) GB850783A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190149A (en) * 1986-03-06 1987-11-11 Teves Gmbh Alfred Radial piston pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190149A (en) * 1986-03-06 1987-11-11 Teves Gmbh Alfred Radial piston pump
GB2190149B (en) * 1986-03-06 1989-11-08 Teves Gmbh Alfred Radial piston pump
US4930994A (en) * 1986-03-06 1990-06-05 Alfred Teves Gmbh Radial piston pump

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