GB956572A - Sealing means for pistons and piston-rods of hydraulic cylinders - Google Patents

Sealing means for pistons and piston-rods of hydraulic cylinders

Info

Publication number
GB956572A
GB956572A GB2836860A GB2836860A GB956572A GB 956572 A GB956572 A GB 956572A GB 2836860 A GB2836860 A GB 2836860A GB 2836860 A GB2836860 A GB 2836860A GB 956572 A GB956572 A GB 956572A
Authority
GB
United Kingdom
Prior art keywords
piston
chamber
parts
pressure
component
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
GB2836860A
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.)
HEINZ TEVES
Original Assignee
HEINZ TEVES
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 HEINZ TEVES filed Critical HEINZ TEVES
Publication of GB956572A publication Critical patent/GB956572A/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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
    • F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/32—Accumulator separating means having multiple separating means, e.g. with an auxiliary piston sliding within a main piston, multiple membranes or combinations thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Architecture (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Sealing Devices (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

956,572. Pistons. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHINEN-UND ARMATURENFABRIK KOMM.-GES.]. Aug. 16, 1960 [Jan. 30, 1960], No. 28368/60. Heading F2T. [Also in Division F1] Sealing means for the piston or piston rod of an hydraulic piston and cylinder device comprises an annular chamber in the cylinderengaging surface of the piston or of a bearing member through which the piston-rod passes, the chamber having opposite walls of equal internal and external diameters formed by adjacent surfaces of two constituent parts of the piston or bearing member one of which is axially slidable relative to the other to augment the pressure in the chamber. In Fig. 1 the chambers 3, 4 of the cylinder 2 of an hydropneumatic accumulator are filled with liquid and gas respectively. The piston 1 consists of slidable component parts 5, 6 held by a screw 17 and incorporating an annular chamber 13 filled with a pressure medium and a chamber 14 containing air or gas, packings 9-12 being provided as seals. The pressure medium may be a liquid or a grease introduced into the chamber 13 from the exterior through the cylinder wall, or it may be the liquid in the chamber 4 which is introduced past the packings 11 when the piston part 6 is supported against sliding in the cylinder. In operation, any pressure increase in the chambers 3, 4 leads to a greater pressure increase in the chamber 13 owing to the cross-sectional area of its radial surfaces exposed to fluid pressure being smaller than those of the piston parts 5, 6. In Fig. 2, the piston is made up of a unitary component including parts 22, 22a secured together and defining a chamber 20 between them, and of a component 21 in the form of a bush which co-operates with the parts 22, 22a to provide a second annular chamber 19 communicating with the chamber 20 through a bore 23. The annular chamber 13 may contain liquid or be completely filled with a rubber 0-ring which may be reinforced with P.T.F.E. In Fig. 4, the medium in the chamber 13 is placed under pressure by springs 31 clamped on the piston component 34 by a washer 35 retained against a sleeve 36 by a nut screwing on rod 32 integral with the piston component 33.
GB2836860A 1960-01-30 1960-08-16 Sealing means for pistons and piston-rods of hydraulic cylinders Expired GB956572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET17801A DE1116950B (en) 1960-01-30 1960-01-30 Sealing for pistons or piston rods of hydraulic cylinders

Publications (1)

Publication Number Publication Date
GB956572A true GB956572A (en) 1964-04-29

Family

ID=7548715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2836860A Expired GB956572A (en) 1960-01-30 1960-08-16 Sealing means for pistons and piston-rods of hydraulic cylinders

Country Status (4)

Country Link
BE (1) BE596165A (en)
CH (1) CH393013A (en)
DE (1) DE1116950B (en)
GB (1) GB956572A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078031A1 (en) * 1981-10-26 1983-05-04 Deere & Company Pressure accumulator
CN112049833A (en) * 2020-08-21 2020-12-08 浙江永安工程机械有限公司 Novel hydraulic and pneumatic combined control cylinder of hydraulic hammer and sealing form
CN112610542A (en) * 2020-12-15 2021-04-06 库卡机器人(广东)有限公司 Balance cylinder hydraulic system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3724370A1 (en) * 1987-07-23 1989-02-02 Stabilus Gmbh INNER PRESSURE INDEPENDENT SEALING SYSTEM WITH GAS PRESSURE SEALED LIPS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078031A1 (en) * 1981-10-26 1983-05-04 Deere & Company Pressure accumulator
CN112049833A (en) * 2020-08-21 2020-12-08 浙江永安工程机械有限公司 Novel hydraulic and pneumatic combined control cylinder of hydraulic hammer and sealing form
CN112610542A (en) * 2020-12-15 2021-04-06 库卡机器人(广东)有限公司 Balance cylinder hydraulic system
CN112610542B (en) * 2020-12-15 2022-03-25 库卡机器人(广东)有限公司 Balance cylinder hydraulic system

Also Published As

Publication number Publication date
CH393013A (en) 1965-05-31
BE596165A (en) 1961-02-15
DE1116950B (en) 1961-11-09

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