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WO2000026572A1 - Manchon de raccordement rapide regi par une servocommande sur la moitie femelle du manchon - Google Patents

Manchon de raccordement rapide regi par une servocommande sur la moitie femelle du manchon Download PDF

Info

Publication number
WO2000026572A1
WO2000026572A1 PCT/IT1998/000335 IT9800335W WO0026572A1 WO 2000026572 A1 WO2000026572 A1 WO 2000026572A1 IT 9800335 W IT9800335 W IT 9800335W WO 0026572 A1 WO0026572 A1 WO 0026572A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
piston
coupling
chamber
housing
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.)
Ceased
Application number
PCT/IT1998/000335
Other languages
English (en)
Inventor
Tomaso Giorgio Ferri
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU15766/99A priority Critical patent/AU1576699A/en
Publication of WO2000026572A1 publication Critical patent/WO2000026572A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L29/00—Joints with fluid cut-off means
    • F16L29/04—Joints with fluid cut-off means with a cut-off device in each of the two pipe ends, the cut-off devices being automatically opened when the coupling is applied
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of two pipe-end fittings

Definitions

  • the invention concerns quick couplings for connecting two branches of a fluid circuit.
  • the quick couplings already known are those components used to reactivate or cut off connection between two branches of a fluid circuit without the need for any further operation.
  • Quick couplings generally consist of two half couplings or unions in each of which a check valve is mounted. A mushroom valve is placed in each half of the coupling.
  • valves When the two unions are separated, the valves automatically close due to thrust exercised by springs so that, during the operation, losses are reduced to a minimum and penetration of particles is prevented.
  • Purpose of this invention is to assist coupling and uncoupling by elminating residual pressure in the female half coupling and returning it by means of control pressure to its idle position when uncoupled and before coupling, as will be explained below.
  • Subject of the invention is a quick coupling for assisted connection of the male and female half couplings between two branches of a fluid circuit.
  • the female half coupling consists of a "female half-coupling group" comprising a base containing a first housing for the female half coupling and a second housing for a servo control device for said female half coupling in order to zero residual pressure and let in control pressure.
  • the valve block of this female half coupling is formed of a cylindrical body with an upper head and a lower head projecting downward from a supporting liner and having a lower cylindrical extension.
  • Said base is fixed to a distributor comprising a delivery tube for main pressure, a discharge channel for residual pressure and a channel for pressure from the servo control.
  • Said servo control comprises a tubular piston worked by a push button, freely sliding inside a second housing communicating axially with the distributor's discharge channel.
  • said piston has a narrower cylindrial area that creates a first chamber round the piston, connected to a first transversal channel that, after a 90° bend, extends down to the lower end of the base and joins up with the distributor's channel for servo control pressure.
  • Lower down on said tubular piston a further narrower cylindrical area creates a second chamber round said piston, through which chamber passes a hole opposite a second transversal channel leading into the liner housing in the lower end of the valve body head. In this way, through the axial hole in the tubular piston, said housing communicates with the servo control housing and with the distributor's discharge channel.
  • a third transversal channel substantially parallel to the second one, this too leading into the housing of the liner at the position of the cylindrical extension to the valve body head.
  • the second external spring makes contact between the bottom of said second cylindrical chamber and said chamber's top where the first chamber begins, projecting inwards to an extent approximately corresponding to the central point of the upper turn of said spring, whose inner central point then corresponds to the lower extension of the push button.
  • the piston's first position is therefore reached by compressing the first spring until said lower extension of the push button reaches the second external spring.
  • the piston's second position is reached when the second spring is also compressed to the end of the piston's stroke.
  • the valve body is pressed against the bottom of the housing in the base by a helical compression spring placed round the central tubular body of said valve body, making contact between a raised ring placed close to the upper head of the valve body and the lower head of the valve body projecting from its central tubular body.
  • Seal packing is placed on the lower head of the valve body at the edge of the liner and on the bottom of the housing at the position of the cylindrical extension of the lower head between the second and third transversal channels, the purpose of said packing being to ensure separation of the discharge flow of residual pressure from the flow of control pressure.
  • Disengagement of the male half coupling is done in the same way as for engagement, using the servo control push button to move the piston into its first position for discharge of residual pressure through the second and third transversal channels, then moving the piston into a second position to continue said discharge through the third channel and, through the second channel, to let in control pressure supplied through the first channel and through the distributor's pressure control channel.
  • Couplings can be easily engaged and disengaged even if residual pressure is still present in the system. Loads needed for coupling are reduced as these are no longer deter- mined by values of residual pressure.
  • the device is compact, easy to maintain and extremely simple to use.
  • Coupling and uncoupling are made easy obtaining maximum effects with minimum effort, reducing stress for operators and wear on materials.
  • Fig. 1 Quick coupling with male half coupling and female half-coupling group, subject of the invention, before coupling, a longitudinal section.
  • Fig. 3 As above, when servo control pressure is being put into the female half-coupling group, with movement of the valve body to engage the male half coupling, a longitudinal section.
  • the quick coupling 10 for the two branches of a fluid circuit, comprise the male half coupling 1 1 , of a type already known, with an annular channel
  • the distributor 100 comprises a delivery channel 101 , and discharge channels 102 and 103 for pressure supplied by servo control.
  • the female half-coupling group 20 comprises a base 60 with housings 61 and 62 respectively for the female half coupling 21 and for servo control 80 for said female half coupling 21 .
  • the female half coupling 21 comprises a cylindrical liner 22, to house the valve body 40, fixed in said housing 61 in the base 60 by lower threading
  • annular channel 25 Close to the edge of the liner 22, is an annular channel 25, of a semi- circular transversal section, for housing balls 43 placed inside holes 24 close to the edge of the valve body 40 to lock the male half coupling 11.
  • valve body 40 On the valve body 40 is an upper head 41 connected by a cylindrical body 42 to a lower head 44 with a downward cylindrical extension 45.
  • the valve 50 is lodged in the inner chamber 46 of said valve body 40.
  • Said chamber 46 communicates, through branches 51 and 52, with the channel 53 in line with the delivery channel 101 of the distributor 100.
  • said liner 22 presents a raised inner ring 27.
  • a helical compression spring 26 is placed between the lower side of said ring 27 and the upper head 44 of the valve body 40.
  • the servo control 80 for the female half coupling 21 comprises a tubular piston 82 open internally, fixed to a push button 81 that slides freely inside the cylindrical housing 62 of the base 60, aligned and communi- eating with the channel 102 of the distributor 100 fixed to the push button 81.
  • said housing 62 presents, in sequence: a cylindrical chamber 66 in which the annular extension 83 of the push button 81 slides; an axial cylindrical chamber 67 of a larger diameter, and a cylindrical hole 68, of a diameter corresponding to that of the piston 82, which extends to the lower end of the base 60 connecting with the discharge channel 102 of the distributor 100.
  • a short distance from said cavity 84 of a smaller diameter is a zone of equal diameter that forms a first cylindrical chamber 85, communicating with a first channel 70 formed by two branches at 90°, and connecting up with the channel 103 of the distributor 100 for control pressure.
  • holes 87 pass through the piston 82, said holes being aligned with a second transversal channel 71 which, passing through the base 60, leads into the bottom of the housing 61 at the lower end of the lower head of the valve body 40, projecting from the lower edge of the liner 22, immediately below seal packing 95 placed round said lower head.
  • a third channel 72 that, passing through the base 60, leads into the bottom of said housing 61 at the position of the lower cylindrical extension 45 to said lower head 44.
  • Seal packing 47 is placed between said second channel 71 and the third transversal channel 72. Placed coaxially round the piston 82 are two helical compressiion springs 90 and 91.
  • the internal spring 90 makes contact uppermost against the lower end of the push button 81 and contact below against the edge of the chamber 67 that surrounds the piston 82.
  • a finger is used to press the push button 81 (Fig.2) of the servo control 80 for the female half-coupling group 20 until the internal spring 90 is compressed and contact made between the tubular extension 83 and the external spring 91.
  • the chamber 86 of the piston 82 lies opposite the two transversal channels 71 and 72 causing residual pressure, in the bottom of housing 61 for the female half coupling, to zero through the hole 88 in the piston 82 that communicates with the discharge channel 102 of the distributor 100.
  • the first chamber 85 of the piston 82 matches both with the second channel 71 and with the first channel 70 connected to channel 103 of the distributor 100, while the third channel 72 still communicates with the chamber 86 of said piston 82.
  • control pressure is therefore created against the lower head 44 of the valve body 40, while the bottom of housing 62 remains in communication with the discharge channel 102.
  • the effect of all this is to move said valve body 40 towards the outside of the liner 22 its position then being such that the balls 43 can move to the internal half ring 25 of said liner 22 allowing passage of the male half coupling 11 and so engaging it, through said balls, with the female half coupling 21.
  • the process is substantially that already described.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un manchon de raccordement rapide (10) permettant de relier un demi-manchon mâle (11) à un demi-manchon femelle (21), entre les deux canalisations d'un circuit fluidique. Ce manchon est composé d'un groupe demi-manchon femelle comprenant une base (60), avec un premier logement cylindrique (61) pour ce demi-manchon femelle (21) et un second logement cylindrique (62) pour un dispositif à servocommande (80), lequel est fixé à un distributeur (100). Ce distributeur comporte un canal (101) destiné à amener la pression, un canal (102) permettant d'évacuer la pression, et un canal (103) conçu pour recevoir la pression provenant de la servocommande, ce qui permet, dans ledit demi-manchon femelle, de réduire la pression résiduelle à zéro et d'introduire la pression provenant de la servocommande.
PCT/IT1998/000335 1998-10-29 1998-11-23 Manchon de raccordement rapide regi par une servocommande sur la moitie femelle du manchon Ceased WO2000026572A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU15766/99A AU1576699A (en) 1998-10-29 1998-11-23 Quick coupling assisted by servo control on the female half of the coupling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI98A002313 1998-10-29
IT1998MI002313A IT1303266B1 (it) 1998-10-29 1998-10-29 Innesto rapido facilitato con servocomando sul semi-innesto a femmina

Publications (1)

Publication Number Publication Date
WO2000026572A1 true WO2000026572A1 (fr) 2000-05-11

Family

ID=11380954

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1998/000335 Ceased WO2000026572A1 (fr) 1998-10-29 1998-11-23 Manchon de raccordement rapide regi par une servocommande sur la moitie femelle du manchon

Country Status (3)

Country Link
AU (1) AU1576699A (fr)
IT (1) IT1303266B1 (fr)
WO (1) WO2000026572A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1590587A4 (fr) * 2003-01-29 2006-04-19 Snap Tite Tech Inc Rampe equipee d'un moyen de detente
EP2818596A3 (fr) * 2013-06-24 2015-05-13 Faster S.p.A. Dispositif de raccord multiple avec système de décharge de pression automatique
EP3480475A1 (fr) * 2017-10-13 2019-05-08 Actuant Corporation Dispositif de découplage de conduits à distance

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1385824A (en) * 1971-07-09 1975-03-05 Dempco Hydraulic coupler with pressure relief mechanism
US4150688A (en) * 1977-01-03 1979-04-24 General Electric Company Removable fluid take-off and pressure release coupling for washing machine and the like
DE2948105A1 (de) * 1979-11-29 1981-06-04 Daimler-Benz Ag, 7000 Stuttgart Druckversorgungsaggregat fuer hydraulische verbraucher, insbesondere fuer eine hilfskraftlenkung eines kraftfahrzeuges
EP0108344A1 (fr) * 1982-11-01 1984-05-16 Deere & Company Demi-accouplement pour jonction de tuyaux
GB2179112A (en) * 1985-08-16 1987-02-25 Imp Clevite Inc Quick disconnect coupling
FR2593101A1 (fr) * 1986-01-22 1987-07-24 Norelem Sa Dispositif de raccordement automatique d'une installation hydraulique mobile a une source de fluide sous pression.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1385824A (en) * 1971-07-09 1975-03-05 Dempco Hydraulic coupler with pressure relief mechanism
US4150688A (en) * 1977-01-03 1979-04-24 General Electric Company Removable fluid take-off and pressure release coupling for washing machine and the like
DE2948105A1 (de) * 1979-11-29 1981-06-04 Daimler-Benz Ag, 7000 Stuttgart Druckversorgungsaggregat fuer hydraulische verbraucher, insbesondere fuer eine hilfskraftlenkung eines kraftfahrzeuges
EP0108344A1 (fr) * 1982-11-01 1984-05-16 Deere & Company Demi-accouplement pour jonction de tuyaux
GB2179112A (en) * 1985-08-16 1987-02-25 Imp Clevite Inc Quick disconnect coupling
FR2593101A1 (fr) * 1986-01-22 1987-07-24 Norelem Sa Dispositif de raccordement automatique d'une installation hydraulique mobile a une source de fluide sous pression.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1590587A4 (fr) * 2003-01-29 2006-04-19 Snap Tite Tech Inc Rampe equipee d'un moyen de detente
EP2818596A3 (fr) * 2013-06-24 2015-05-13 Faster S.p.A. Dispositif de raccord multiple avec système de décharge de pression automatique
EP3480475A1 (fr) * 2017-10-13 2019-05-08 Actuant Corporation Dispositif de découplage de conduits à distance
US11781529B2 (en) 2017-10-13 2023-10-10 Enerpac Tool Group Corp. Remote conduit de-coupling device

Also Published As

Publication number Publication date
ITMI982313A1 (it) 2000-04-29
ITMI982313A0 (it) 1998-10-29
AU1576699A (en) 2000-05-22
IT1303266B1 (it) 2000-11-06

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