ES2176171T3 - AUTOMATIC DEVICE FOR REDUCING THE SIZE OF PIPES WITH HYDRAULIC TRANSMISSION. - Google Patents

AUTOMATIC DEVICE FOR REDUCING THE SIZE OF PIPES WITH HYDRAULIC TRANSMISSION.

Info

Publication number
ES2176171T3
ES2176171T3 ES01101576T ES01101576T ES2176171T3 ES 2176171 T3 ES2176171 T3 ES 2176171T3 ES 01101576 T ES01101576 T ES 01101576T ES 01101576 T ES01101576 T ES 01101576T ES 2176171 T3 ES2176171 T3 ES 2176171T3
Authority
ES
Spain
Prior art keywords
chamber
auxiliary
cylinder
reservoir
valve
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 - Lifetime
Application number
ES01101576T
Other languages
Spanish (es)
Inventor
Giorgio Vezzani
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.)
Cbc SpA
Original Assignee
Cbc SpA
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 Cbc SpA filed Critical Cbc SpA
Application granted granted Critical
Publication of ES2176171T3 publication Critical patent/ES2176171T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • 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
    • B21D39/046—Connecting tubes to tube-like fittings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Refuse Collection And Transfer (AREA)
  • Reciprocating Pumps (AREA)
  • Forging (AREA)
  • Actuator (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

Dispositivo para reducir el diámetro de tubos (10), en el que se acciona la pinza de compresión del tubo por medio de una transmisión hidráulica, comprendiendo: un cilindro (44) dentro del cual es movible un vástago coaxial (52) en ambas direcciones, proyectándose uno de sus extremos de manera estanca desde un extremo del cilindro (44), estando fijado coaxialmente al otro extremo del vástago (52) un pistón sellado (54) que divide el interior del cilindro (44) en una primera cámara (42) y una segunda cámara (58) que contienen ambas un líquido incompresible, llevando el extremo en saliente del vástago (52) medios portadores (80) para accionar la pinza de compresión del tubo cuando aumenta el volumen en la primera cámara (42); un depósito (34) que contiene también dicho líquido incompresible, siendo la envuelta del depósito (34) en parte (74) elásticamente deformable, dentro de límites determinados, como resultadode la variación en la cantidad de líquido presente en el depósito (34); una bomba de émbolo (30) para extraer el líquido contenido en el depósito (34) y alimentarlo bajo presión dentro de dicha primera cámara (42) del cilindro (44) vía un primer conducto (46, 48); un segundo conducto (72) que conecta la segunda cámara (58) del cilindro (44) al depósito (34); un tercer conducto (48, 108) que conecta la primera cámara (42) al depósito (34) puenteando la bomba (30); medios de cierre (104) para interrumpir el tercer conducto (48 108); medios de retorno elástico para restituir el vástago (52) a la posición correspondiente al volumen mínimo de la primera cámara (42) del cilindro (44) cuando están abiertos los medios de cierre (104) en el tercer conducto (48, 108), caracterizado por comprender medios de válvula (90., 99, 100, 102) para abrir automáticamente los medios de cierre (104) con el fin de permitir la descarga del líquido incompresible dela primera cámara (42) dentro del depósito (34), cuando se alcanza una presión predeterminada correspondiente al grado de compresión requerido del tubo en la primera cámara (42), comprendiendo los medios de válvula una primera válvula auxiliar (90) que se abre cuando la presión alcanza en la primera cámara (42) del cilindro (44) el valor deseado, sirviendo la apertura de dicha primera válvula auxiliar (90) para presurizar una primera cámara auxiliar (98) de un cilindro auxiliar (99) dentro del cual puede deslizarse en las dos direcciones un pistón auxiliar (100) que separa la primera cámara auxiliar (98) del cilindro auxiliar (99) de una segunda cámara auxiliar (101) que comunica con el depósito (34) y, vía dichos medios de cierre (104), con la primera cámara (42) del cilindro (44), cerrándose los medios de cierre (104) cuando está bajo presión la primera cámara (42) del cilindro (44), comunicando la primera cámara auxiliar (98) con el depósito (34) vía una segunda válvula auxiliar (114), cerrándose la segunda válvula auxiliar (114) cuando está bajo presión la primera cámara auxiliar (98), presentando el pistón auxiliar (100) medios (102) que permiten abrir los medios de cierre (104) cuando está bajo presión la primera cámara auxiliar (98); estando previstos medios (110, 112) accionables por el operario para abrir la segunda válvula auxiliar (114) para restaurar por tanto la condición de partida.Device for reducing the diameter of tubes (10), in which the compression clamp of the tube is operated by means of a hydraulic transmission, comprising: a cylinder (44) within which a coaxial rod (52) is movable in both directions , one of its ends projecting in a sealed manner from one end of the cylinder (44), a sealed piston (54) dividing the inside of the cylinder (44) in a first chamber (42) being coaxially attached to the other end of the rod (52). ) and a second chamber (58) both containing an incompressible liquid, the protruding end of the rod (52) carrying means (80) for actuating the compression clamp of the tube when the volume in the first chamber (42) increases; a reservoir (34) which also contains said incompressible liquid, the shell of the reservoir (34) being in part (74) elastically deformable, within determined limits, as a result of the variation in the amount of liquid present in the reservoir (34); a piston pump (30) for extracting the liquid contained in the reservoir (34) and feeding it under pressure into said first chamber (42) of the cylinder (44) via a first conduit (46, 48); a second conduit (72) connecting the second chamber (58) of the cylinder (44) to the reservoir (34); a third conduit (48, 108) connecting the first chamber (42) to the reservoir (34) bypassing the pump (30); closing means (104) for interrupting the third conduit (48 108); elastic return means for restoring the rod (52) to the position corresponding to the minimum volume of the first chamber (42) of the cylinder (44) when the closing means (104) are opened in the third conduit (48, 108), characterized in that it comprises valve means (90., 99, 100, 102) for automatically opening the closing means (104) in order to allow the discharge of the incompressible liquid from the first chamber (42) into the tank (34), when a predetermined pressure corresponding to the required degree of compression of the tube in the first chamber (42) is reached, the valve means comprising a first auxiliary valve (90) that opens when the pressure reaches in the first chamber (42) of the cylinder ( 44) the desired value, the opening of said first auxiliary valve (90) serving to pressurize a first auxiliary chamber (98) of an auxiliary cylinder (99) into which an auxiliary piston can slide in both directions (100) separating the first auxiliary chamber (98) from the auxiliary cylinder (99) from a second auxiliary chamber (101) that communicates with the reservoir (34) and, via said closing means (104), with the first chamber ( 42) of the cylinder (44), the closing means (104) being closed when the first chamber (42) of the cylinder (44) is under pressure, the first auxiliary chamber (98) communicating with the reservoir (34) via a second valve auxiliary (114), the second auxiliary valve (114) being closed when the first auxiliary chamber (98) is under pressure, the auxiliary piston (100) having means (102) allowing the closing means (104) to be opened when under pressure the first auxiliary chamber (98); being provided means (110, 112) operable by the operator to open the second auxiliary valve (114) to thereby restore the starting condition.

ES01101576T 2000-02-07 2001-01-25 AUTOMATIC DEVICE FOR REDUCING THE SIZE OF PIPES WITH HYDRAULIC TRANSMISSION. Expired - Lifetime ES2176171T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2000MI000191A IT1316351B1 (en) 2000-02-07 2000-02-07 AUTOMATIC HYDRAULIC TRANSMISSION PIPE CHOKE DEVICE

Publications (1)

Publication Number Publication Date
ES2176171T3 true ES2176171T3 (en) 2002-12-01

Family

ID=11443916

Family Applications (1)

Application Number Title Priority Date Filing Date
ES01101576T Expired - Lifetime ES2176171T3 (en) 2000-02-07 2001-01-25 AUTOMATIC DEVICE FOR REDUCING THE SIZE OF PIPES WITH HYDRAULIC TRANSMISSION.

Country Status (5)

Country Link
EP (1) EP1121997B1 (en)
AT (1) ATE219975T1 (en)
DE (1) DE60100002T2 (en)
ES (1) ES2176171T3 (en)
IT (1) IT1316351B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20120204U1 (en) 2001-12-13 2003-04-17 Gustav Klauke GmbH, 42855 Remscheid Hydraulic pressing device comprises a hydraulic pump, a moving part, a fixed part, and a non-return valve acting as an over pressure valve
DE20303877U1 (en) 2003-03-10 2003-05-08 Novopress GmbH Pressen und Presswerkzeuge & Co KG, 41460 Neuss Hand-guided hydraulic press cylinder forms part of hydraulic reservoir
CN104191413B (en) * 2014-08-19 2016-04-06 中国北方车辆研究所 A kind of hydraulic retarder catch assemble mechanism

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1295321B1 (en) * 1997-10-13 1999-05-04 Cbc Spa HYDRAULIC TRANSMISSION PIPE CHOKE DEVICE
DE19825160A1 (en) * 1997-10-15 1999-04-22 Klauke Gmbh Gustav Hydraulic press device e.g. for connecting cable shoes to electrical cables or for riveting

Also Published As

Publication number Publication date
IT1316351B1 (en) 2003-04-10
DE60100002T2 (en) 2002-10-31
ITMI20000191A1 (en) 2001-08-07
DE60100002D1 (en) 2002-08-08
ATE219975T1 (en) 2002-07-15
EP1121997A1 (en) 2001-08-08
ITMI20000191A0 (en) 2000-02-07
EP1121997B1 (en) 2002-07-03

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