EP0041007A1 - Druckrelais zur Positionsangabe des beweglichen Teils eines Arbeitzylinders - Google Patents

Druckrelais zur Positionsangabe des beweglichen Teils eines Arbeitzylinders Download PDF

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Publication number
EP0041007A1
EP0041007A1 EP81400766A EP81400766A EP0041007A1 EP 0041007 A1 EP0041007 A1 EP 0041007A1 EP 81400766 A EP81400766 A EP 81400766A EP 81400766 A EP81400766 A EP 81400766A EP 0041007 A1 EP0041007 A1 EP 0041007A1
Authority
EP
European Patent Office
Prior art keywords
bore
channel
relay
pressure
relay according
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.)
Granted
Application number
EP81400766A
Other languages
English (en)
French (fr)
Other versions
EP0041007B1 (de
Inventor
Daniel Bouteille
Eric Petrimaux
Jean-Luc Burban
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.)
Legris SA
Original Assignee
Legris SA
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 Legris SA filed Critical Legris SA
Publication of EP0041007A1 publication Critical patent/EP0041007A1/de
Application granted granted Critical
Publication of EP0041007B1 publication Critical patent/EP0041007B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8326—Fluid pressure responsive indicator, recorder or alarm
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86622—Motor-operated
    • Y10T137/8663—Fluid motor

Definitions

  • the invention relates to a pressure relay comprising, on the one hand, a supply inlet for a first pressurized fluid, an exhaust port, an outlet port and a control input and, on the other hand part, inside its body, a dispensing device, provided with a switching member such as a valve, which is adapted to connect, by internal channels and orifices, the outlet orifice is towards the pressure input, or towards the exhaust when a pneumatic control signal is applied to said control input.
  • a pressure relay comprising, on the one hand, a supply inlet for a first pressurized fluid, an exhaust port, an outlet port and a control input and, on the other hand part, inside its body, a dispensing device, provided with a switching member such as a valve, which is adapted to connect, by internal channels and orifices, the outlet orifice is towards the pressure input, or towards the exhaust when a pneumatic control signal is applied to said control input.
  • Such a relay which is well known in itself, finds its application in particular in circuits for controlling the position of the movable member of a jack where the control signals are represented by the pressure existing in the chamber of the jack whose volume is decreasing, pressure which is canceled when the piston has actually reached its extreme position at the end of the stroke; such a relay is therefore a pressure drop relay.
  • the invention therefore proposes to provide a pressure relay, the internal constitution of which corresponds to that which is mentioned above, but in which measures will be taken to allow its direct association on a jack; in this case, the most advantageous benefits will be obtained when the power supply input of the relay is connected to a pressure tap orifice placed on the cylinder, or when a speed regulator must be associated with the supply of the cylinder .
  • the aim is achieved thanks to the fact that the body of the relay has an additional channel of large section, a first end of which comprises first mechanical and pneumatic connection means, cooperating directly with a supply port of a cylinder, a second end of which comprises second mechanical and pneumatic connection means suitable for receiving a supply pipe for the cylinder by a second pressurized fluid, the control input of the distribution device being connected to this auxiliary channel between said ends .
  • German Patent No. 1119615 is a pneumatic relay comprising a valve capable of interrupting and authorizing the circulation of a fluid, as a function of a control pressure, and where the body of this relay has a channel of large section , one end of which comprises first connection means cooperating directly with the feed inlet orifice of a jack, while the other end comprises second connection means capable of receiving the end of a pipe d 'cylinder supply; in this known relay, however, no connection is established between this channel and the input of the control signal, and the aim pursued here, namely to effect a blocking of the jack in the event of a pipe rupture, has nothing in common with that which is referred to in the present invention.
  • a pneumatic relay 1 visible in FIG. 1, comprises a body 2 in which are formed, on the one hand, a first bore 3 of axis XX ', intended to receive a pneumatic distribution device, generally indicated by 4 associated with a pneumatic connector 5 and, on the other hand, a second bore 7 of axis YY ', substantially perpendicular to XX' in this figure, intended to receive a part 6 of generally hollow cylindrical shape, used for direct fixing of the body in a supply port 8 ′, of a cylinder body 8 placed on one end of the cylinder of the cylinder. This part 6 is axially traversed by a concentric bore allowing the passage of a fluid.
  • This bore therefore constitutes a channel 9, formed in the cylindrical part, having at a first end 60 of the part an orifice 10 external to the jack, and at a second end 61 an orifice 11, communicating with the internal volume of the jack.
  • This part 6 also has at its first end of the channel 9 an internal thread 12 and an external polygonal clamping head 13 while the second end is constituted by an extension projecting from the body and provided with an external thread 14; seals 15 and 16 are respectively placed between the head and a first bearing surface 17 of the body 2 and between a second bearing surface 18 of the body, opposite and parallel to 17, and the jack.
  • annular space 20 which is connected to the channel 9 by lateral openings of the part 6 such as 21 which terminate at the external surface of the portion 19.
  • a channel 22 of the body connects the second bore 7 to a bottom 23 of the first bore 3.
  • the annular space 20 may also not exist if the openings 21 are connected directly to the channel 22.
  • the dispensing device 4 comprises a skirt of revolution 24 having a first coaxial chamber 25 placed on the side of the bottom 23 and communicating with a second coaxial chamber 26 through an orifice 27; moreover, the first chamber communicates by a lateral passage 28 with a first external annular groove 29, while the second chamber communicates by a passage 30 with a second external annular groove 31 in the skirt; these two grooves being separated by an external annular rib 32.
  • a switching member 33 axially movable along XX ', and having one end 34 in the first chamber, passes through the orifice 27 to enter the second chamber through a second end 35 carrying a valve 36 capable of closing and opening the orifice 27 when this member 33 is moved to the left and respectively to the right.
  • an elastic membrane 38 is placed, which is pinched tightly on its periphery, while a second front wall 39 of the skirt, opposite the first, serves as a 'support to a plug 40 which is placed at the end 41 of the bore 3.
  • This plug which carries the pneumatic connector 5, has a channel 42 of which an outlet orifice 43 is placed opposite the valve, and one of which inlet 44 communicates with piping 45, the end of which is engaged in connector 5.
  • the grooves 29 and 31 do not communicate with each other; these grooves are connected separately by respective channels 46 and 47 placed in the body 2 and leading to the bore 3 with two external pneumatic connectors 48 respectively 49, the openings 50 and 51 of which open, like that of the connector 5, on an external surface 52 of the body opposite the second bore to receive ends of pipes not shown and comparable to 45, see also Figure- 2 .
  • the distribution device 4 receives a first supply pressure Q through the piping 45 engaged in the connector 5; this pressure applying the valve 36 to the orifice 27, a pressurized fluid moves through the orifice 43, the chamber 26, the passage 30, the groove 31 and the channel 47 to end at the outlet S of the connector 49 and associated piping for use and control of a suitable receiving device.
  • this pressure is transmitted to the membrane 38 through the openings 21, the space 20 and the passage 22 representing a control input C for the device 4 and causes a deformation of this membrane, the movement of which to the right repels the switching member 33 which opens the orifice 27 and closes the orifice 43.
  • a conventional pneumatic connector 52 can be fixed on its cylindrical part 6 by screwing a hollow fixing part 53 of the connector, in the threaded region 12 of the cylindrical part 6, so that 'a pressurized supply fluid P of this jack circulates through the channel 9, the cross section of which is large and through the channel 54 of the connector, a lateral extension 55 of which carries a pneumatic connector 56 connected to a distributor, not shown, by piping 57.
  • a channel 54 ′ of axis ZZ ′ is directly hollowed out in the body 2 ′ to lead to a second bore 7 ′ of axis YY ′ substantially perpendicular;
  • a hollow cylindrical fixing part 6 'of the relay similar to the previous one, but plugged at its first end 60' has a series of lateral openings 21 'to connect an internal channel 9' and the channel 54 'to one and the same annular space 20 'placed between 7' and 6 'and therefore at a control passage 22' CI leading to a distribution device 4 'similar to the previous one; as in the example in FIG.
  • the complete supply channel comprising the portions 9 ′ and 54 ′ has a large section so as not to cause pressure drops and has a first end 58 leading to the jack 8 and a second end 59 terminating by a pneumatic connector 56 ′ in a supply pipe 57 ′ in pressurized fluid P.
  • this relay When this relay operates as a pressure drop sensor relay associated with the supply of a cylinder, a pressure Q is applied continuously and the output S is connected to the exhaust E as long as the volume of the cylinder which is being decrease is subject to the pressure of the fluid escaping from the cylinder to the distributor through the auxiliary channel 9, 54; as soon as the piston of the jack has reached its extreme stroke and, as a result, said volume has reached its minimum value, the pressure in this channel is canceled and the.
  • first press Q is connected to the output S to provide a limit switch signal.
  • this relay When this relay is associated with a tapping cylinder, in order to signal that the cylinder piston has reached a certain position corresponding to a tapping orifice placed at a particular point on the cylinder, the pressure supply input Q of the relay is directly connected to this tapping hole and is therefore only supplied with pressure if the piston has passed this point. Consequently, a signal can only be delivered to the output S of the relay if the piston of the jack has not been retained by an accidental blocking before reaching the point in question.
  • the hollow cylindrical part 6 “comprises at the end 61" a conical thread 14 "capable of being engaged in a thread 8" of suitable form which is formed in the 8 “orifice of an 8" cylinder.
  • the seal between the jack and the cylindrical part is here obtained by sufficient tightening which is exerted using a tool, not shown, which cooperates with 13 "flaps placed on a portion of the cylindrical part placed between the 2 "pressure relay and 8" cylinder.
  • the upper portion 60 "of this cylindrical part therefore does not include means of cooperation with a clamping tool which makes it possible to manufacture this part 6" with thinner walls and using a metal having greater mechanical strength. weak than in the previous case.
  • the axial retention of the cylindrical part 6 "in the body of the relay is here provided on the one hand by the first upper end 60", wider than the second bore, and on the other hand by a circlip 62 placed around the part 7 "and under the lower surface 18" of the body.
  • the cylindrical part 6 has an axial channel 9" communicating with the lateral orifices 21 "; however, the upper end of this channel here has a conical thread 12" capable of receiving a connector 52 ".

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Valve Housings (AREA)
  • Fluid-Driven Valves (AREA)
  • Details Of Valves (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Fluid-Pressure Circuits (AREA)
EP81400766A 1980-05-23 1981-05-14 Druckrelais zur Positionsangabe des beweglichen Teils eines Arbeitzylinders Expired EP0041007B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8011560 1980-05-23
FR8011560A FR2483021A1 (fr) 1980-05-23 1980-05-23 Relais de pression apte a signaler la position d'un organe mobile de verin

Publications (2)

Publication Number Publication Date
EP0041007A1 true EP0041007A1 (de) 1981-12-02
EP0041007B1 EP0041007B1 (de) 1985-02-13

Family

ID=9242293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400766A Expired EP0041007B1 (de) 1980-05-23 1981-05-14 Druckrelais zur Positionsangabe des beweglichen Teils eines Arbeitzylinders

Country Status (7)

Country Link
US (1) US4492149A (de)
EP (1) EP0041007B1 (de)
JP (1) JPS5794182A (de)
DE (1) DE3168870D1 (de)
ES (1) ES8204814A1 (de)
FR (1) FR2483021A1 (de)
SU (1) SU1103802A3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548287A1 (fr) * 1983-06-20 1985-01-04 Legris Perfectionnement aux relais electro-fluidiques
FR2575528A1 (fr) * 1984-12-28 1986-07-04 Telemecanique Electrique Raccord pneumatique comportant un moyen detecteur amovible
FR2695437A1 (fr) * 1992-09-04 1994-03-11 Roudaut Philippe Dispositif de validation de fin de course d'un vérin pneumatique.
EP1580476A1 (de) * 2004-03-22 2005-09-28 FESTO AG & Co Anschlussvorrichtung für Fluidleitungen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4606448A (en) * 1983-09-29 1986-08-19 Kabushiki Kaisha Daikin Seisakusho Supply pressure control device for air clutch
FR2575526B1 (fr) * 1984-12-28 1987-02-13 Telemecanique Electrique Ensemble de raccords fonctionnels pour verin pneumatique a montage combine pour assurer deux fonctions au moins
JP2003184825A (ja) * 2001-12-18 2003-07-03 Kayaba Ind Co Ltd 接続構造

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648568A (en) * 1970-03-09 1972-03-14 Mosier Ind Inc Signal valve
FR2343280A1 (fr) * 1976-03-05 1977-09-30 Bouteille Daniel Limiteur de debit unidirectionnel
FR2343281A1 (fr) * 1976-03-05 1977-09-30 Bouteille Daniel Limiteur de debit unidirectionnel
FR2352188A1 (fr) * 1976-05-18 1977-12-16 Bouteille Daniel Dispositif de purge rapide d'une chambre d'un verin pneumatique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1482517A (en) * 1923-02-26 1924-02-05 Paul C Swole Signal valve
US1668753A (en) * 1923-06-30 1928-05-08 Irvin J Baker Combined tire gauge and indicator
DE955384C (de) * 1954-07-21 1957-01-03 Dionysius Fanghaeuser Befestigungsvorrichtung fuer Reifenluftdruck-UEberwachungsvorrichtungen
US2892608A (en) * 1956-01-25 1959-06-30 Int Basic Economy Corp Valve
FR2343218A1 (fr) * 1976-03-03 1977-09-30 Bourlange Jean Georges Perfectionnements apportes aux balles notamment a celles destinees aux armes de chasse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648568A (en) * 1970-03-09 1972-03-14 Mosier Ind Inc Signal valve
FR2343280A1 (fr) * 1976-03-05 1977-09-30 Bouteille Daniel Limiteur de debit unidirectionnel
FR2343281A1 (fr) * 1976-03-05 1977-09-30 Bouteille Daniel Limiteur de debit unidirectionnel
FR2352188A1 (fr) * 1976-05-18 1977-12-16 Bouteille Daniel Dispositif de purge rapide d'une chambre d'un verin pneumatique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548287A1 (fr) * 1983-06-20 1985-01-04 Legris Perfectionnement aux relais electro-fluidiques
WO1985000204A1 (fr) * 1983-06-20 1985-01-17 Legris Perfectionnement aux relais electro-fluidiques
US4742194A (en) * 1983-06-20 1988-05-03 Societe Anonyme Styled Legris Device for producing an electric signal indicative of pressure in a fluid system
FR2575528A1 (fr) * 1984-12-28 1986-07-04 Telemecanique Electrique Raccord pneumatique comportant un moyen detecteur amovible
FR2695437A1 (fr) * 1992-09-04 1994-03-11 Roudaut Philippe Dispositif de validation de fin de course d'un vérin pneumatique.
EP1580476A1 (de) * 2004-03-22 2005-09-28 FESTO AG & Co Anschlussvorrichtung für Fluidleitungen

Also Published As

Publication number Publication date
US4492149A (en) 1985-01-08
ES502395A0 (es) 1982-05-01
JPH0220877B2 (de) 1990-05-10
FR2483021B1 (de) 1984-03-02
JPS5794182A (en) 1982-06-11
ES8204814A1 (es) 1982-05-01
EP0041007B1 (de) 1985-02-13
DE3168870D1 (en) 1985-03-28
SU1103802A3 (ru) 1984-07-15
FR2483021A1 (fr) 1981-11-27

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