WO2011053162A1 - Dispositif de protection pour un cylindre de fluide et procédé d'utilisation de ce dernier - Google Patents

Dispositif de protection pour un cylindre de fluide et procédé d'utilisation de ce dernier Download PDF

Info

Publication number
WO2011053162A1
WO2011053162A1 PCT/NO2010/000396 NO2010000396W WO2011053162A1 WO 2011053162 A1 WO2011053162 A1 WO 2011053162A1 NO 2010000396 W NO2010000396 W NO 2010000396W WO 2011053162 A1 WO2011053162 A1 WO 2011053162A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective device
end portion
piston rod
cylinder
fluid
Prior art date
Application number
PCT/NO2010/000396
Other languages
English (en)
Inventor
Ole Kurt Knutsen
Original Assignee
Ole Kurt Knutsen
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 Ole Kurt Knutsen filed Critical Ole Kurt Knutsen
Publication of WO2011053162A1 publication Critical patent/WO2011053162A1/fr

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
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/041—Non-metallic bellows
    • F16J3/045—Split bellows
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details

Definitions

  • the present invention relates to a protective device for a fluid cylinder and a method of using the protective device. More particularly, it relates to a protective device for use as a protective sleeve around a portion of a piston rod which projects from a cylinder casing of a fluid cylinder, the protective device being provided with a first end portion arranged to be fixed to or at a portion of the cylinder casing and with a second end portion arranged to be fixed to or at an end portion of the piston rod or to a portion near thereto .
  • the purpose of the protective device is, among other things, to protect the piston rod from liquid, dirt and particles that could damage seals between the piston and the cylinder as the piston rod is moved relative to the cylinder casing.
  • the protective device according to the present invention may be used for both gas cylinders and hydraulic cylinders. Both these types of fluid cylinders are provided with seals that may be damaged by dirt and particles.
  • Fluid cylinders of the kind mentioned above have very wide application in the industry. This is particularly the case with hydraulic cylinders.
  • a hydraulic cylinder is a device which includes a cylinder casing in which a piston can be moved in and out by means of hydraulic fluid which is carried into and out of the cylinder casing .
  • one or more gaskets are used, which are made of a material such as polyurethane or rubber.
  • the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art or at least provide a useful alternative to the prior art.
  • a protective device for use as a protective sleeve around a portion of a piston which projects from a cylinder casing of a fluid cylinder, the protective device being provided with a first end portion arranged to be fixed to or at a portion of the cylinder casing and with a second end portion arranged to be fixed to or at an end portion of the piston rod, and the protective device being provided with a joining device which extends between the first end portion and the second end portion.
  • a sheet-form protective device can be transformed into a sleeve-shaped protective device .
  • the sheet-form protective device may be of any shape before it is transformed into the sleeve-shaped protective device.
  • it may be shaped like a sheet of paper, whereas in another design it may be shaped like a split collar, for example.
  • the joining device may be selected from the group consisting of, for example, but not limited to, a zip fastener, a so- called Velcro ® fastener, a so-called ziplock, a series of press studs, an adhesive, or vulcanization, or from a combination of two or more of these or other joining devices of a kind known per se.
  • the joining device is formed by an adhesive
  • the adhesive may be applied between two overlapping portions of the protective device. The same applies if the joining device is provided by means of vulcanization.
  • the protective device may be formed with a reduced material thickness in the portions forming the joining device .
  • the protective device may be provided with a ventilation device .
  • the ventilation device may be, for example, a two-way air valve of a kind known per se. Even though the protective device according to the present invention may extend the life of the gaskets of the fluid cylinder, leakage may still occur.
  • the protective device may be provided with a draining device, which is arranged to drain any fluid present in the annular space defined between the piston rod, and the protective device.
  • the draining device may be a valve of a kind known per se.
  • a method of placing a protection around a portion of a piston rod which projects from a cylinder casing of a fluid cylinder including the steps of :
  • a first end portion of the sleeve-shaped body may be fixed to or at a portion of the cylinder casing of the fluid cylinder, and a second end portion of the sleeve-shaped body may be fixed to or at an end portion of the piston rod.
  • the first end portion is fixed to a portion of the attachment lug of the cylinder casing or to a bolt projecting through it.
  • the protective device will thereby protect the entire cylinder casing.
  • the second end portion can be fixed to the attachment lug of the piston rod or to a bolt projecting through it. It is also conceivable that the second end portion is fixed to a portion of the piston rod itself near to the end portion.
  • Figure 1 shows a view of a hydraulic cylinder with a piston in an extended position in which the piston rod is enclosed by a protective device according to the present invention
  • Figure 2 shows a cross-sectional view of the hydraulic
  • Figure 3 shows the hydraulic cylinder of figure 2, but the piston rod is in a retracted position
  • Figure 4 shows a view of a protective device as it is
  • Positional indications such as upper, lower, left, right refer to the position shown in the figures.
  • the reference numeral 1 indicates a fluid cylinder which includes a cylinder casing 3 and a piston rod 5.
  • the fluid cylinder 1 is a hydraulic cylinder 1.
  • the necessary fluid inlet portion and fluid outlet portion in the cylinder casing are indicated in the figures but are not designated any further by reference numerals as they will be known to a person skilled in the art .
  • gasket 7 in the form of an O-ring.
  • the hydraulic cylinder 1 is provided with an attachment lug 9, 9' which is arranged to surround a portion of a bolt 11, 11' which provides
  • the longitudinal axes of the bolts 11, 11' extend perpendicularly out from the paper plane. It is primarily the bolts 11, 11' that prevent a protective device 20 from being slipped over the piston rod 5 as a sleeve .
  • the protective device 20 is fixed, at a first end portion 22, around an end portion of the cylinder casing 3 by means of a first clip 24.
  • the protective device 20 is fixed around an end portion of the piston rod 5 by means of a second clip 28.
  • the clips 24, 28 are of a kind known per se and may be made of an acid-proof material .
  • the protective device 20 is provided with a joining device 30 which extends between the first end portion 22 and the second end portion 26.
  • the joining device 30 extends in a partially helical shape between the end portions 22, 26.
  • the purpose of the partially helical shape is to spread the joining. device 30 around a portion of the circumference of the protective device 20 when the hydraulic cylinder 1 is in the position that is shown in figure 2.
  • the joining device 30 substantially extends at right angles out from and between the end portions 22, 26.
  • the protective device 20 is provided with a draining device 32 in the form of a controllable valve.
  • the valve 32 is arranged adjacent the lowest -lying point of the annular space 25.
  • the protective device 20 is provided with a ventilation device 34.
  • the ventilation device 34 may be, for example, a two-way air valve of a kind known per se.
  • the ventilation device 34 is necessary only in those cases in which the protective device 20 is made of an airtight
  • the valves 32, 34 may be connected to a pipe socket which is attached to and extends through the protective device 20.
  • the ventilation device 34 may be left out.
  • FIG. 4 shows the protective device 20 as it is present as a sheet before having been placed around a portion of the hydraulic cylinder and having been formed by means of the joining device 30 into a sleeve as shown in figure 1.
  • the first end portion 22 and the second end portion 26 of the protective device 20 each have a length which is adapted for, respectively, the external diameter of the cylinder casing 3 and the diameter of the portion of the piston rod around which it is to be fixed.
  • the end portions 22, 26 may be formed with a larger material thickness than the rest of the protective device 20.
  • the joining device 30 is constituted by a first joining portion 31 which can be attached to a complementarily fitting second joining portion 31'.
  • the joining device 30 extends only between the end portions 22, 26.
  • the protective device 20 may be made of any suitable material
  • protective device may be formed with bending zones (not shown) so that when compressed, it exhibits a bellows.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)

Abstract

La présente invention se rapporte à un dispositif de protection (20) destiné à être utilisé comme manchon de protection autour d'une partie d'une tige de piston (5) qui fait saillie depuis une enveloppe de cylindre (3) d'un cylindre de fluide (1), le dispositif de protection (20) étant pourvu d'une première partie d'extrémité (22) agencée pour être fixée à l'enveloppe de cylindre (3), ou à une partie de cette dernière, et d'une seconde partie d'extrémité (26) agencée pour être fixée à la tige de piston (5), ou à une partie d'extrémité de cette dernière, le dispositif de protection (20) étant pourvu d'un dispositif de raccordement (30) qui s'étend entre la première partie d'extrémité (22) et la seconde partie d'extrémité (26), le dispositif de raccordement (30) étant agencé pour transformer un dispositif de protection en forme de feuille en un dispositif de protection en forme de manchon. La présente invention se rapporte également à un procédé d'utilisation du dispositif de protection (20).
PCT/NO2010/000396 2009-11-02 2010-11-02 Dispositif de protection pour un cylindre de fluide et procédé d'utilisation de ce dernier WO2011053162A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20093268 2009-11-02
NO20093268A NO333699B1 (no) 2009-11-02 2009-11-02 Beskyttelsesanordning og framgangsmate ved bruk av samme

Publications (1)

Publication Number Publication Date
WO2011053162A1 true WO2011053162A1 (fr) 2011-05-05

Family

ID=43922301

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2010/000396 WO2011053162A1 (fr) 2009-11-02 2010-11-02 Dispositif de protection pour un cylindre de fluide et procédé d'utilisation de ce dernier

Country Status (2)

Country Link
NO (1) NO333699B1 (fr)
WO (1) WO2011053162A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017171597A1 (fr) * 2016-03-31 2017-10-05 Saab Ab Système de levage hydraulique à câble à contre-poids

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO342225B1 (no) * 2016-03-16 2018-04-16 Kepp Tech As Anordning for beskyttelse mot lekkasje fra tetninger mellom et sylinderhus og en stempelstang

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB836903A (en) * 1957-03-13 1960-06-09 Henry Beakbane Fortox Ltd A protective cover for reciprocating rods or the like
US6267019B1 (en) * 1999-09-29 2001-07-31 Caterpillar Inc. Applicator for protective coatings
JP2001241406A (ja) * 2000-02-25 2001-09-07 Ikegaya Kenkou:Kk 建造物解体装置における油圧シリンダのピストンロッド用保護カバー
DE102005028754A1 (de) * 2004-07-15 2007-04-19 Zf Friedrichshafen Ag Faltenbelag für hydraulische, hydropneumatische oder pneumatische Kolben-Zylinder-Aggregate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB836903A (en) * 1957-03-13 1960-06-09 Henry Beakbane Fortox Ltd A protective cover for reciprocating rods or the like
US6267019B1 (en) * 1999-09-29 2001-07-31 Caterpillar Inc. Applicator for protective coatings
JP2001241406A (ja) * 2000-02-25 2001-09-07 Ikegaya Kenkou:Kk 建造物解体装置における油圧シリンダのピストンロッド用保護カバー
DE102005028754A1 (de) * 2004-07-15 2007-04-19 Zf Friedrichshafen Ag Faltenbelag für hydraulische, hydropneumatische oder pneumatische Kolben-Zylinder-Aggregate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017171597A1 (fr) * 2016-03-31 2017-10-05 Saab Ab Système de levage hydraulique à câble à contre-poids

Also Published As

Publication number Publication date
NO333699B1 (no) 2013-08-26
NO20093268A1 (no) 2011-05-03

Similar Documents

Publication Publication Date Title
US20100175772A1 (en) Hose system for high pressure hydraulic system
CN204879266U (zh) 哈夫节
WO2011053162A1 (fr) Dispositif de protection pour un cylindre de fluide et procédé d'utilisation de ce dernier
CN202371312U (zh) 船舶用密封通舱件
WO2018000539A1 (fr) Raccord de conduite embarqué sans personnel
CA2454764A1 (fr) Joint de conduite a etancheite verifiable
US20160377208A1 (en) Gasket for Threaded Pipe Flange
EP2716955A3 (fr) Machine d'obturation pour des interventions d'installation, réparation et maintenance de canalisations d'alimentation en fluides sous pression
CN201034796Y (zh) 一种检测汽车空调系统的装置
US8882154B1 (en) Pipe coupling
CN203757286U (zh) 哈夫式管道连接修补装置
US9636787B2 (en) Non-welding apparatus for repair of an enclosure wall and methods for use thereof
KR20130005163U (ko) 배관 기밀 시험용 지그
WO2018000543A1 (fr) Ensemble manchon de maintenance de canalisation sur navire sans équipage
WO2010021754A1 (fr) Appareil pour relier des corps tubulaires et pour réparer des corps tubulaires immergés
US11467056B2 (en) Sensing leak in a multi-seal sealing assembly with sensors
CN102777728A (zh) 一种管道抢修节
KR100249644B1 (ko) 선박 배관 테스트용 지그
CN202109094U (zh) 地面铺设双向塑料伸缩补偿器管路
GB2450119A (en) Pipe repair / reinforcing cover with inflatable liner
WO2017160163A1 (fr) Agencement de protection concerne les fuites d'étanchéité entre un carter de cylindre et une tige de piston
CN215721675U (zh) 堵漏装置
CN215111300U (zh) 一种大口径低压pe管道应急补漏夹具工装
CN218780943U (zh) 一种压力管道堵漏器
KR100576992B1 (ko) 상수도 보수관과 가지밸브간의 연결 및 밀폐장치

Legal Events

Date Code Title Description
DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10827203

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10827203

Country of ref document: EP

Kind code of ref document: A1