FI125901B - Method for Installing a Conical Connector Ring and Mounting Tool for Use with a Conical Connector for Hydraulic Systems - Google Patents

Method for Installing a Conical Connector Ring and Mounting Tool for Use with a Conical Connector for Hydraulic Systems Download PDF

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Publication number
FI125901B
FI125901B FI20145888A FI20145888A FI125901B FI 125901 B FI125901 B FI 125901B FI 20145888 A FI20145888 A FI 20145888A FI 20145888 A FI20145888 A FI 20145888A FI 125901 B FI125901 B FI 125901B
Authority
FI
Finland
Prior art keywords
ring
connector
tube
pipe
mounting
Prior art date
Application number
FI20145888A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20145888A (en
Inventor
Janne Volanen
Original Assignee
Gs Hydro Oy
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 Gs Hydro Oy filed Critical Gs Hydro Oy
Priority to FI20145888A priority Critical patent/FI125901B/en
Priority to PCT/FI2015/050611 priority patent/WO2016055690A1/en
Application granted granted Critical
Publication of FI125901B publication Critical patent/FI125901B/en
Publication of FI20145888A publication Critical patent/FI20145888A/en

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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/048—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using presses for radially crimping tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/061—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends a pressure ring being arranged between the clamping ring and the threaded member or the connecting member
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/10—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/10—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered
    • F16L19/12—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered with additional sealing means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Description

Method for fitting a connecting ring of a cone connector and a fitting tool to be used with a cone connector used in hydraulic systems
The invention relates to a method for fitting a connecting ring of a cone connector used in hydraulic systems as defined in the preamble of claim 1. The invention also relates to a fitting tool to be used with a cone connector used in hydraulic systems as defined in the preamble of claim 2.
Cone connectors are widely used in hydraulic systems. Usually, cutting rings are used as connecting rings in cone connectors. International Standard ISO 8434-1 describes 24° cone connectors using cutting rings. Fig. 1 shows a cross section of a typical 24° cone connector having a body 1, a tightening nut 2 and a cutting ring 3 on a pipe 4. The cutting ring is pre-fitted on the pipe 4 by tightening the nut, creating axial movement towards the fitting body cone that forces the ring to bite into the pipe.
The connection is completed by tightening the nut 2 with a certain torque, whereby the nut 2 and the pipe with a pre-fitted cutting ring move towards the body 1 and the outer cone of the cutting ring and the inner cone of the body 1 are brought into abutment to each other. This connection has been proven satisfactory per se, but it requires a skilled person to pre-fit the cutting ring correctly.
An aim of the present invention is to provide a novel solution for pre-fitting the connecting ring on the pipe to be connected by the cone connector. To this end, the method of the present invention is characterized in that during the crimping the teeth of the connecting ring bite into the pipe wall, the fitting tool being designed to position the connecting ring correctly onto the pipe.
The fitting tool of the present invention is characterized in that the dies are arranged to define a continuous ring around the pipe end between the end surface of the pipe and receiving space, said continuous ring having an inner diameter corresponding to or being slightly larger than the outer diameter of the pipe , so that the pipe end is prevented from enlarging due to crimping forces, and that the dies are arranged to define a second continuous ring around the pipe, axially behind the receiving space, as seen from the end surface of the pipe, said second ring having an inner diameter corresponding to or being slightly larger than the outer diameter of the pipe, said second ring forming a stop to avoid excessive crimping.
The invention will be described further with reference to the following drawings, wherein:
Fig. 1 shows an example of a 24° cone connector in accordance with ISO 8434-1,
Fig. 2 shows an embodiment of the cone connector of the invention,
Fig. 3 shows an embodiment of a fitting tool of the invention,
Fig. 4 shows a partial isometric view of the fitting tool of Fig. 3, and
Fig. 5 shows a part of the fitting tool placed on a pipe to press the connecting ring teeth into the pipe wall.
As shown in Fig. 2, the cone connector of the invention comprises a connecting body 1, a tightening nut 2 and a connecting ring 3 placed on a pipe 4 near an end 7 of the pipe. The connecting ring 3 is pre-fitted on the pipe 4 by using a fitting tool 5 which will be described below. The fitting tool applies a radial force on the connecting ring 3 and the teeth 6 of the connecting ring bite into the pipe wall 8. The connection is completed by placing a seal 15 on the pipe 4 adjacent to the forward end of the connecting ring 3 and by thereafter tightening the nut 2 with a certain torque, whereby the nut 2 and the pipe 4 with the connecting ring 3 and the seal 15 move towards the connecting body 1 and the outer forward end cone of the connecting ring 3 and the inner receiving cone of the connecting body 1 are brought into abutment to each other, the seal 15 securing the connection against leakage. The connecting ring 3 is provided with a stopper surface 17 which is brought into abutment to an end surface 18 of the connecting body 1 in order to avoid excessive tightening of the seal 15 and to form a further metal-to-metal sealing which also supports the connection against vibrations and torsion.
Figs. 3 and 4 show an embodiment of the fitting tool 5 of the invention. The fitting tool comprises radially movable dies 11 provided with connection nipples 16 for hydraulic or pneumatic driving media to move the dies radially inwards or outwards. The dies 11 together form a receiving opening 17 for the pipe 4 and the connecting ring 3 thereon. Each die 11 has on its inner surface a receiving space 12 corresponding essentially to the contour of the connecting ring 3, but providing the necessary free space to allow the connecting ring 3 to dilate when compressing the ring 3 by pressing it radially towards the pipe wall 8.
The dies 11 are arranged to define a continuous ring 13 around the pipe end between the end surface 10 of the pipe 4 and the receiving space 12. Said continuous ring 13 has an inner diameter corresponding to or slightly larger than the outer diameter of the pipe 14, so that the pipe end is prevented from enlarging due to crimping forces. At least one of the dies 1 is provided with a stopper nose 9 in order to place the connecting ring 3 at a correct distance from the end surface 10 of the pipe 4. The dies 11 are further arranged to define a second continuous ring 14 around the pipe, axially behind the receiving space 12, as seen from the end surface 10 of the pipe 4. Said second ring 14 has an inner diameter corresponding to or slightly larger than the outer diameter of the pipe 4, said second ring 14 forming a stop to avoid excessive crimping.

Claims (2)

1. Menetelmä hydraulijärjestelmissä käytettävän kartioliittimen liitinrenkaan asentamiseksi, joka mainittu kartioliitin käsittää liitinrungon (1), kiristysmutterin (2) ja sisäpuolisilla hampailla (6) varustetun liitinrenkaan (3) sovitettavaksi putken (4) päälle, joka putki on tarkoitettu liitettäväksi kartioliittimen avulla, joka menetelmä käsittää vaiheet: liitinrenkaan (3) sijoittaminen putken (4) päälle lähelle putken päätä (7); asennustyökään (5) sijoittaminen liitinrenkaan (3) päälle; säteittäisen voiman kohdistaminen liitinrenkaaseen (3) asennustyökalun (5) avulla liitinrenkaan (3) puristamiseksi, tunnettu siitä, että puristamisen aikana liitinrenkaan (3) hampaat (6) leikkautuvat putken seinämään (8), asennustyökalun (5) ollessa suunniteltu asemoimaan liitinrenkaan (3) oikein putken päälle.A method for mounting a connector ring for a conical connector used in hydraulic systems, said cone connector comprising a connector body (1), a clamping nut (2), and a connector ring (3) with internal teeth (6) for mounting on a pipe (4) comprising the steps of: placing a connector ring (3) on the tube (4) near the tube end (7); positioning the mounting tool (5) on the connector ring (3); applying radial force to the coupling ring (3) by means of a mounting tool (5) for clamping the coupling ring (3), characterized in that the teeth (6) of the coupling ring (3) intersect the tube wall (8) during compression; right on the pipe. 2. Asennustyökalu käytettäväksi hydraulijärjestelmissä käytettävän kartioliittimen yhteydessä, joka mainittu kartioliitin käsittää liitinrungon (1), kiristysmutterin (2) ja sisäpuolisilla hampailla (6) varustetun liitinrenkaan (3) sovitettavaksi putken (4) päälle, joka asennustyökalu (5) käsittää useita säteittäisesti siirrettäviä leukoja (11), jotka yhdessä määrittävät vastaanottotilan (12) liitinrengasta (3) varten, mainittujen leukojen (11) ollessa järjestetyt kohdistamaan säteittäisen voiman liitinrenkaaseen (3) hampaiden (6) ajamiseksi putken seinämään (8) puristamalla liitinrengasta (3), jolloin ainakin yksi leuka (11) on varustettu pysäytinelimellä (9) sijoitettavaksi vasten putken (4) päätypintaa (10), mainitun pysäytinelimen (9) määrittäessä liitinrenkaan (3) oikean aseman tietyllä etäisyydellä päätypinnasta (10), tunnettu siitä, että leuat (11) ovat järjestetyt määrittämään yhtäjaksoisen renkaan (13) putken pään ympärille putken (4) päätypinnan (10) ja vastaanottotilan (12) välissä, jolla mainitulla yhtäjaksoisella renkaalla (13) on sisähalkaisija, joka vastaa tai on hieman suurempi kuin putken (4) ulkohalkaisija siten, että putken päätä estetään laajenemasta puritusvoimien johdosta, ja että leuat (11) ovat järjestetyt määrittämään toisen yhtäjaksoisen renkaan (14) putken ympärille, aksiaalisesti vastaanottotilan takana, katsottuna putken (4) päätypinnasta (10), jolla toisella renkaalla (14) on sisä-halkaissija, joka vastaa tai on hieman suurempi kuin putken (4) ulkohalkaisija, joka mainittu toinen rengas (14) muodostaa pysäyttimen liiallisen puristamisen välttämiseksi.An assembly tool for use in connection with a conical connector used in hydraulic systems, said conical connector comprising a connector body (1), a clamping nut (2) and a connector ring (3) with internal teeth (6) for mounting on a tube (4) comprising a plurality (11) defining a receiving space (12) for the connector ring (3), said jaws (11) being arranged to exert radial force on the connector ring (3) to drive the teeth (6) to the tube wall (8) by squeezing the connector ring (3) the jaw (11) being provided with a stop member (9) for positioning against the end face (10) of the tube (4), said stop member (9) defining the correct position of the connector ring (3) at a certain distance from the end face (10) to determine the circumference of the tube end of the continuous ring (13) between the end face (10) of the tube (4) and the receiving space (12) having said continuous ring (13) having an inside diameter corresponding to or slightly larger than the outer diameter of the tube (4) such that the tube end is prevented from expanding by squeezing forces; the jaws (11) being arranged to define a second continuous ring (14) around the tube, axially behind the receiving space, as seen from the end face (10) of the tube (4) having a second diameter (14) corresponding or slightly larger than the tube ( 4) an outer diameter, said second ring (14) forming a stopper to prevent excessive compression.
FI20145888A 2014-10-10 2014-10-10 Method for Installing a Conical Connector Ring and Mounting Tool for Use with a Conical Connector for Hydraulic Systems FI125901B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20145888A FI125901B (en) 2014-10-10 2014-10-10 Method for Installing a Conical Connector Ring and Mounting Tool for Use with a Conical Connector for Hydraulic Systems
PCT/FI2015/050611 WO2016055690A1 (en) 2014-10-10 2015-09-15 Method for fitting a connecting ring of a cone connector and a fitting tool to be used with a cone connector used in hydraulic systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20145888A FI125901B (en) 2014-10-10 2014-10-10 Method for Installing a Conical Connector Ring and Mounting Tool for Use with a Conical Connector for Hydraulic Systems
FI20145888 2014-10-10

Publications (2)

Publication Number Publication Date
FI125901B true FI125901B (en) 2016-03-31
FI20145888A FI20145888A (en) 2016-03-31

Family

ID=55586096

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20145888A FI125901B (en) 2014-10-10 2014-10-10 Method for Installing a Conical Connector Ring and Mounting Tool for Use with a Conical Connector for Hydraulic Systems

Country Status (2)

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FI (1) FI125901B (en)
WO (1) WO2016055690A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1912337A1 (en) * 1969-03-11 1970-10-01 Walterscheid Kg Jean Tube fitting
FR2406773A1 (en) * 1977-10-24 1979-05-18 Legris France Sa High pressure hydraulic pipe coupling - has ductile olive with internal grooves which is deformed to grip pipe when nut is tightened
US4622732A (en) * 1984-11-23 1986-11-18 Haskel, Inc. Method for forming joints in pressurized fluid systems
DE102009041056A1 (en) * 2009-09-10 2011-03-24 Voss Fluid Gmbh Pipe fitting and method of making the same
DE102011051974A1 (en) * 2011-07-20 2013-01-24 Voss Fluid Gmbh Pipe with a connection end for a pipe connection, method for its production and pipe connection with such a pipe
AU2014201751A1 (en) * 2013-03-25 2014-10-09 Betaswage Pty Ltd Pinch decompression in radial crimp press machines

Also Published As

Publication number Publication date
WO2016055690A1 (en) 2016-04-14
FI20145888A (en) 2016-03-31

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