EP3652103B1 - Machine de levage de faisceaux de tubes pour échangeurs de chaleur - Google Patents

Machine de levage de faisceaux de tubes pour échangeurs de chaleur Download PDF

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Publication number
EP3652103B1
EP3652103B1 EP18749882.9A EP18749882A EP3652103B1 EP 3652103 B1 EP3652103 B1 EP 3652103B1 EP 18749882 A EP18749882 A EP 18749882A EP 3652103 B1 EP3652103 B1 EP 3652103B1
Authority
EP
European Patent Office
Prior art keywords
lifting machine
supporting frame
tube
pair
tube bundle
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.)
Active
Application number
EP18749882.9A
Other languages
German (de)
English (en)
Other versions
EP3652103A1 (fr
Inventor
Stefano Agostino
Ladislao Pertot
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.)
Maus Italia SpA
Original Assignee
Maus Italia SpA
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Publication date
Application filed by Maus Italia SpA filed Critical Maus Italia SpA
Publication of EP3652103A1 publication Critical patent/EP3652103A1/fr
Application granted granted Critical
Publication of EP3652103B1 publication Critical patent/EP3652103B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets

Definitions

  • Each jaw comprises two arms, having a lower free end and an upper end for connection to said supporting frame.
  • Tube bundles have a considerable flexibility which increases with length and therefore their end portions, weighted down by the tube plates, if not adequately supported tend to bend downwards, with the risk of damaging to the whole bundle.
  • the invention aims to overcome these limits by implementing a lifting machine for tube bundles of heat exchangers that is functional, efficient, solid, compact in size and extremely practical in use, adaptable to any size of tube bundles, to facilitate any operation of moving the tube bundles, preserving them from damage.
  • said lifting machine comprises first actuator means, which can be operated by means of said hydraulic control unit, for adjusting the length of said second filiform type gripping means, and second actuator means, which can also be actuated via said hydraulic control unit, for causing the sliding of said first and said second pair of beams of said supporting frame through said telescopic connecting means.
  • said first caliper type gripping means comprise at least one jaw.
  • said at least one jaw comprises at least two arms joined to one another, each arm having a first and a second end, where the first ends of said arms are slidingly associated with said supporting frame and can translate in a direction transversal to its main direction of development.
  • Said second filiform type gripping means associated with the two ends of said supporting frame act on said tube bundle near its ends, where heavy tube plates are normally present, supporting them and thus avoiding bending and deformation of the end portions of the tube ends caused by the weight of the cantilevered portions of the beam.
  • the hooks provided at the ends of the cables allow an easy and quick connection with the tube bundles. This connection can advantageously take place directly on the tube plates, when the latter are provided with special rings or eyebolts. The tube plates are thus hung to the lifting machine.
  • each end of said support frame is provided with two cables advantageously allows the use of lifting bundles for lifting the tube bundle.
  • Each cable is hooked to one end of a lifting bundle so as to create a sort of pedestal which supports said tube bundle from the bottom.
  • each cable is connected independently to one of said first actuator means: advantageously, if the tube bundle during the lifting step is rotated axially, it is possible, by acting on the different length of the two support cables of the lifting bundle, to straighten and orient the beam axially.
  • the lifting bundle can hardly be positioned symmetrically beneath the tube bundle: this error could cause torsional deformations of the beam during its movement and for this reason, these errors must be corrected and compensated.
  • the ends of said supporting frame comprise two beams, each of which is connected to one of said cables: advantageously, said beams comprise telescopic connecting means, which allow the frame to vary its length to adapt to different lengths of tube bundles, making the lifting machine even more efficient. Furthermore, during the transport and handling of the machine, the telescopic connections can be retracted making the frame, and consequently the machine, more compact and less cumbersome.
  • Said second filiform type gripping means may also be used to fix the lifting machine to transport or packaging means.
  • Said first caliper type gripping means comprise two-arm jaws. Unlike traditional machines, where the arms are rotatably coupled to allow the two arms to rotate reciprocally to open and close the jaw, in the lifting machine object of the invention, the arms are slidably associated with said supporting frame in a transverse direction to its main development direction.
  • the two arms of the same jaw are moved by a single actuator, i.e. by said second actuator means, to ensure the opening and closing of the jaw in a symmetrical manner with respect to the axis of the tube bundle, to ensure greater stability.
  • the transverse sliding of the jaw arms allows a reduction in the overall dimensions of the entire lifting machine during transport.
  • the tube bundles 2 comprise a plurality of parallel tubes along a longitudinal main development axis y and having the ends locked by a first and a second tube plate 21, and a plurality of diaphragms 22 interposed between said two tube plates 21.
  • Said lifting machine 1 essentially comprises a supporting frame 5, first 3 and second 4 gripping means for said tube bundle 2, motor means M adapted to feed a utility hydraulic circuit and a hydraulic control unit C for all the mechanisms present on the machine 1.
  • Said first gripping means 3 are caliper type, are associated with said body 53 of said supporting frame 5 and are adapted to embrace said tube bundle 2 on the tubes or at said diaphragms 22.
  • said first caliper type gripping means 3 comprise two jaws 30.
  • Each jaw 30 comprises two arms 31, 32 coupled together.
  • Each arm 31, 32 has a substantially L-shaped development, a boxlike section, and comprises a first 31a, 32a and a second 31b, 32b end.
  • the second ends 31b, 32b of said arms 31, 32 are free and comprise a pedestal 33 for supporting said diaphragms 22.
  • said pedestail 33 is adapted to rest on the connecting sheets of the diaphragms 22 for greater grip stability.
  • said pedestal 33 is fixed; alternatively, said pedestal 33 may be of the floating type, to better adapt to the geometry and to the size of the beam 2.
  • said second ends 31b, 32b are firmly associated with the central portion of the arms 31, 32.
  • said second ends 31b, 32b may be rotatably associated with the central portion of the arms 31, 32, controlled by actuators, to facilitate the gripping or release step thereof.
  • the first ends 31a, 32a of said arms 31, 32 are slidably associated with said supporting frame 5 in a direction transverse to its main development direction x.
  • the transversal sliding of said arms 31, 32 causes the opening and closing of the respective jaw 30, to tighten more or less the tube bundle 2 being lifted, adapting to the most varied diameters of the tube bundles.
  • said third actuator means comprise an actuator 10 for each jaw 30: in this way, it is possible to vary the working width of the two jaws 30, also diversifying them according to their grip point on the tube bundle 2.
  • the horizontal sliding movement of the two arms 31, 32 of each single jaw 30 is instead coordinated and symmetrical with respect to the main development direction x of the supporting frame 5.
  • the cables 41a, 41b, 42a, 42b are of the inextensible type, and said lifting machine 1 comprises first actuator means for adjusting the length of said cables.
  • said first actuator means comprise an actuator 8 for each cable 41a, 41b, 42a, 42b.
  • Said second filiform type gripping means 4 comprise, for each cable 41a, 41b, 42a, 42b, a pivoting pulley 55, adapted to deviate the respective cable ( Figure 2 ) so that the latter is tangent to the tube bundle 2 at the gripping point.
  • the inclination of the pulleys 55 is particularly noticeable in the case of large diameter tube bundles 2.
  • a lifting machine 1 is shown in operation on two different types of tube bundles 2.
  • the tube bundles 2 may have different lengths, and since it is essential for the machine 1 according to the invention to act on the ends of the bundle 2 to prevent bending and deformation of the tubes subjected to a concentrated load at the ends due to the presence of the tube plates 21, it is necessary that the supporting frame 5 can vary its length, to bring said second filiform type gripping means 4 near the tube sheets 21.
  • said second actuator means comprise an actuator 9 for each pair of beams 51a, 51b, 52a, 52b: the telescopic axial sliding movement of each pair of beams 51a, 51b, 52a, 52b with respect to the body 53 of the supporting frame 5 is independent.
  • Said first 8, said second 9 and said third 10 actuator means comprise hydraulic pistons driven by an oil pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Claims (10)

  1. Machine de levage (1) de faisceaux de tubes pour échangeurs de chaleur, où chaque faisceau de tubes (2) comprend une multitude de tubes parallèles dont les extrémités sont bloquées par au moins une plaque tubulaire (21) et une multitude de membranes (22) parallèles entre elles, où ladite machine de levage (1) comprend :
    - un châssis de support (5) à deux extrémités (51, 52) et un corps central (53) ayant une direction principale de développement (x) parallèle aux tubes dudit faisceau de tubes (2) ;
    - des premiers moyens de préhension de type étrier (3) pour ledit faisceau de tubes (2), associés au corps central (53) dudit cadre de support (5), adaptés pour embrasser ladite multitude de tubes dans la zone desdits diaphragmes (21) ;
    - des seconds moyens de préhension de type filiforme (4) pour ledit faisceau de tubes (2), associés aux deux extrémités (51, 52) dudit cadre de support (T), adaptés pour agir sur ledit faisceau de tubes (2) à proximité de ses extrémités,
    où lesdits seconds moyens de préhension (4) de type filiforme comprennent au moins un premier (41a, 41b) et un second (42a, 42b) câble inextensible,
    caractérisée par le fait qu'elle comprend :
    - des moyens moteurs (M) adaptés à l'alimentation d'un circuit hydraulique utilitaire ;
    - une unité de commande hydraulique (C),
    et par le fait que les deux extrémités (51, 52) dudit cadre de support (5) comprennent une première (51a, 51b) et une deuxième (52a, 52b) paire de poutres et que les seconds moyens de préhension de type filiforme (4) comprennent une première (41a, 41b) et une deuxième (42a, 42b) paire de câbles associés à la première (51a, 51b) et à la deuxième (52a, 52b) paire de poutres.
  2. Machine de levage (1) selon la revendication 1, caractérisée par le fait que ladite première (41a, 41b) et ladite deuxième (42a, 42b) paire de câbles comprennent des crochets (6) aptes à être engagés par un faisceau de levage (7).
  3. Machine de levage (1) selon la revendication 1, caractérisée par le fait que ladite première (51a, 51b) et ladite deuxième (52a, 52b) paire de poutres comprennent des moyens de liaison télescopiques.
  4. Machine de levage (1) selon la revendication 1, caractérisée par le fait qu'elle comprend des premiers moyens d'actionnement (8) pour régler la longueur desdits seconds moyens de préhension de type filiforme (4), qui peuvent être activés par ladite unité de commande hydraulique (C).
  5. Machine de levage (1) selon la revendication 4, caractérisée par le fait qu'elle comprend des seconds moyens d'actionnement (9) pour provoquer le glissement de ladite première (51a, 51b) et de ladite seconde (52a, 52b) paire de poutres dudit cadre de support (5) au moyen desdits moyens de liaison télescopiques, qui peuvent être activés par ladite unité de commande hydraulique (C).
  6. Machine de levage (1) selon la revendication 4, caractérisée par le fait que lesdits premiers moyens de préhension de type étrier (3) comprennent au moins une mâchoire (30).
  7. Machine de levage (1) selon la revendication 1, caractérisée par le fait que ladite au moins une mâchoire (30) comprend au moins deux bras (31, 32) joints l'un à l'autre, chaque bras (31, 32) ayant une première (31a, 32a) et une seconde (31b, 32b) extrémité, où les premières extrémités (31a, 32a) desdits bras (31, 32) sont associées de manière coulissante audit cadre de support (5) et peuvent se déplacer en translation dans une direction transversale à sa direction principale de développement (x).
  8. Machine de levage (1) selon la revendication 7, caractérisée par le fait que les secondes extrémités (31b, 32b) de chaque bras (31, 32) de ladite au moins une mâchoire (30) comprennent un socle (33) pour lesdites membranes (22).
  9. Machine de levage (1) selon la revendication 8, caractérisée par le fait qu'elle comprend des troisièmes moyens d'actionnement (10) pour provoquer le glissement desdites premières extrémités (31a, 32a) desdits bras (31, 32) de ladite au moins une mâchoire (30), qui peuvent être activés par ladite unité de commande hydraulique (C).
  10. Machine de levage (1) selon les revendications 4, 5 et 9, caractérisée par le fait que lesdits premiers (8), seconds (9) et troisièmes (10) moyens d'actionnement comprennent des pistons hydrauliques reliés à une pompe à huile.
EP18749882.9A 2017-07-14 2018-07-11 Machine de levage de faisceaux de tubes pour échangeurs de chaleur Active EP3652103B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000079587A IT201700079587A1 (it) 2017-07-14 2017-07-14 Macchina di sollevamento per fasci tubieri di scambiatori di calore
PCT/IT2018/050129 WO2019012568A1 (fr) 2017-07-14 2018-07-11 Machine de levage de faisceaux de tubes pour échangeurs de chaleur

Publications (2)

Publication Number Publication Date
EP3652103A1 EP3652103A1 (fr) 2020-05-20
EP3652103B1 true EP3652103B1 (fr) 2023-10-18

Family

ID=60382517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18749882.9A Active EP3652103B1 (fr) 2017-07-14 2018-07-11 Machine de levage de faisceaux de tubes pour échangeurs de chaleur

Country Status (3)

Country Link
EP (1) EP3652103B1 (fr)
IT (1) IT201700079587A1 (fr)
WO (1) WO2019012568A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BG17495A3 (fr) * 1969-10-22 1973-11-10
JP2989557B2 (ja) * 1996-12-06 1999-12-13 株式会社椿本チエイン 物品把持装置
NL1032933C2 (nl) * 2006-11-23 2008-05-26 Peinemann Equipment Bv Grijper voor objecten.

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Publication number Publication date
WO2019012568A1 (fr) 2019-01-17
IT201700079587A1 (it) 2019-01-14
EP3652103A1 (fr) 2020-05-20

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