WO1999046089A2 - Procede permettant de monter les plateaux d'un echangeur de chaleur devant etre serrees - Google Patents

Procede permettant de monter les plateaux d'un echangeur de chaleur devant etre serrees Download PDF

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Publication number
WO1999046089A2
WO1999046089A2 PCT/DE1999/000626 DE9900626W WO9946089A2 WO 1999046089 A2 WO1999046089 A2 WO 1999046089A2 DE 9900626 W DE9900626 W DE 9900626W WO 9946089 A2 WO9946089 A2 WO 9946089A2
Authority
WO
WIPO (PCT)
Prior art keywords
plates
nut
bolt
hydraulic
clamping
Prior art date
Application number
PCT/DE1999/000626
Other languages
German (de)
English (en)
Other versions
WO1999046089A3 (fr
Inventor
Hans-Wilhelm Beissner
Original Assignee
Carl Walter Schraubwerkzeug-Fabrik Gmbh & Co. Kg
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 Carl Walter Schraubwerkzeug-Fabrik Gmbh & Co. Kg filed Critical Carl Walter Schraubwerkzeug-Fabrik Gmbh & Co. Kg
Priority to EP99917775A priority Critical patent/EP1062076A2/fr
Publication of WO1999046089A2 publication Critical patent/WO1999046089A2/fr
Publication of WO1999046089A3 publication Critical patent/WO1999046089A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • B23P19/067—Bolt tensioners
    • 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
    • B25B29/00—Accessories
    • B25B29/02—Bolt tensioners

Definitions

  • the invention relates to a method with which the plates of a plate heat exchanger can be clamped specifically, the forces being divided.
  • a force is applied hydraulically in order to first compress and clamp the plates
  • a screw is then rotated on a bolt with thread, whereby only the force for the rotational movement has to be applied and no axially directed force in the bolt direction, the previously has already been applied by the hydraulic tensioning device.
  • US-A 4,150,477 (Willis P. Orr) describes a method and an apparatus for prestressing flanges to be connected. A uniform pressure is applied to the flanges to a predetermined, measurable compression, and then the nuts and bolts are used to secure the flanges. Screwing is done "hand tight" while the hydraulic cylinders apply pressure to the flanges. If the first screws and bolts are hand-tight, the hydraulic clamping devices referred to as “clamp units" can be removed, and further bolts and screws are inserted at the locations where the clamping devices previously had their place. After loosening the clamping devices, the screws / bolts already fastened by hand or with a key bear the clamping forces, cf.
  • the arrangement is arranged coaxially around the bolt and applies a hydraulic force to the boiler flange before screwing movements take place on the boiler nut; this procedure is described for both unscrewing and unscrewing the boiler nuts. If all boiler nuts are turned off, a lifting movement is carried out by a support ring (there 14.15) with laterally offset spindle drives (there 26.27.28) which raises all loosened boiler nuts at the same time, which presupposes that before the start the lifting movement, the coupling jaws have been moved radially out of the complementary groove system at the upper end of the pin there.
  • a higher clamping force is to be made easier and faster for clamping elastically flexible packaged plates - for example a heat exchanger - by the hydraulic device and at the same time relieving the strain on the nut element which no longer has this force when it moves against the plates should also apply.
  • the nut as a "tensioning and fixing element with thread", can secure the positioning of the plates generated by the hydraulic tensioning device due to its internal thread and its backward movement and thus essentially (only) receives the position fixation as a task.
  • the forces for compressing the elastically resiliently stacked plates do not strain the nut during its rotational movement.
  • the coaxial counter bearing uses the invention to support the hydraulic pressure. Especially when used in plate heat exchangers, which allow a considerable path for the flexibly packaged plates, it is advantageous to be able to move the coaxial counter bearing upwards, whereby - after the hydraulic force has been switched off - the hydraulic device in the direction of a rotating action (by hand or by machine) the plates to be clamped is adjusted, if necessary retracts again (claim 1). After reaching a predetermined position, the hydraulic pressure can be applied again, so that a further tensioning of the resiliently packaged plates is possible. This is followed - in particular iteratively - by one or more of these method steps in order to be able to gradually cover the full stroke of the plates to be tensioned even when using small or short-stroke hydraulic devices (claim 10, claim 12).
  • the coaxial counter bearing can be designed as a split nut or a split nut element in order to be able to release it directly from the thread after the clamping process has ended, without first having to screw the counter bearing back to the end of the threaded bolt (after it has been described in the above) Has been moved forward on the same bolt).
  • the coaxial counter bearing can be screwed further forwards or further back, for a long clamping distance corresponding to the axial length of the hydraulic device.
  • the counter bearing can also serve to screw the hydraulic cylinder, which in particular has a single action, back into its rest position.
  • the nut that moves up to hold the spring assembly already compressed by the hydraulic cylinders can be a polygonal nut, a toothed ring can be attached to it (claim 4), or the nut can be specially designed with a rear toothing area that is in diameter is reduced compared to the front investment area (claim 4).
  • a key which is sleeve-shaped at its front and has internal teeth can grip over this nut section without increasing the diameter of the two-area nut as a whole, and there is the possibility of obtaining a slim design that is radial Enables the nut to be moved in and tightened in a confined space by iterative turning, axial removal and new engagement of the internal teeth of the key on the nut and turning again.
  • the cylinder head wrench and nut are located in an equally slim housing, which is the hollow body
  • the task is to apply the hydraulically applied force past the nut directly to the flange or plates to be clamped.
  • the hydraulic cylinder can be designed as a short-stroke cylinder, in particular in the case of the attachment variant of the flanges, or as a long-stroke cylinder for the spring assemblies to be tensioned over a larger axial stroke; they rest on the power coupling housing at the rear and are supported on a counter bearing, that is screwed onto the bolt directly or onto an anchor piece screwed onto the end of the bolt with a front internal thread and a rear external thread (claim 8).
  • the tensioning cylinder can be designed as a single-acting hydraulic cylinder, then it can be retracted by hand after the action of the tensioning force F1 and extension by switching off the hydraulic pressure and screwing the hydraulic cylinder back to its rest position with the counter bearing.
  • the counter bearing can be specially designed, it can be designed as a split nut which, after removing a sleeve piece connecting the two half-shells and gripping over a cylindrically tapered collar, can be radially disassembled in order to loosen them directly from the thread without first removing the counter bearing End of the bolt.
  • the sleeve piece is placed on the split nut, it is a thrust bearing that can only be moved in the axial direction by turning, if the sleeve is removed, the thrust bearing breaks down into two parts, which can be removed radially from the thread.
  • the force coupling housing which extends over the nut as a force bypass, has a window or hatch through which a key can reach to actuate the nut in a rotating manner.
  • a pinion can also be attached to the polygonal shape of the nut, which works as a ring gear with a drive pinion swung in from outside through the hatch.
  • the ring gear is arranged directly on it. Attaching the ring gear means that it can be gripped from the outside with a pinion or gear in the power coupling housing and the nut is actuated in a rotating manner.
  • an open polygon ring spanner can engage the nut in a form-fitting manner and move it forward in angular segments without a practically significant force acting on it, rather only the fixing force F2 has to be applied by the spanner, the clamping force F1 is already originated from the hydraulic cylinder via the power coupling housing.
  • the fixing force F2 can also be greater in the end area of the clamping movement, i.e. shortly before the spring assembly is fully tensioned - up to the specified distance of the individual plates - or the flange is fully applied, so that the final one together with the hydraulically acting cylinder and the main force F1 , only a small stroke has to be carried out manually, e.g. only half or a full turn of the nut, which here, however, exerts part of the clamping force itself.
  • Manual dosing and positioning can be carried out more precisely, and this manual adjustment at the end of the clamping movement can be set by the predetermined maximum pressure of the clamping cylinder - when this pressure is slightly below the pressure required for the complete clamping of the plates or the flange .
  • a hydraulic pressure of, for example, 710 bar may be required for the cylinder to fully tension the package, so that the use of 700 bar generates the force F1 and with the force component F2 (only) an additional pressure of 10 bar to end the tensioning must be applied.
  • an accelerated rotation can take place by engaging a pinion in the window of the force coupling housing, the pinion being rotated mechanically or by hand from the outside and the drive pressing on a parallel axis to follow the forward movement of the nut, since the pinion that is put on the nut is only thin, that is, it occupies only a narrow axial area, while the stroke that is overcome is many times greater.
  • FIG. 1 is a side view of a first embodiment.
  • FIG. 1a is a view in the axial direction with respect to the axis 100, two of the devices from FIG. 1 acting simultaneously on a spring assembly 1.
  • FIG. 4 are enlarged sections, partly in section, of the device according to FIG. 1.
  • the sectional planes A-A, B-B and C-C are each drawn in and are self-explanatory for the person skilled in the art.
  • Figure 5 is a second embodiment with a shortened bolt 2 and a slim support housing 31a, for fixing a flange 1a.
  • Figure 6 is an axial view, partly in section, of the second embodiment shown in Figure 5.
  • the first exemplary embodiment is based on a main axis 100 shown in the figure, which is the central axis of an elongated bolt 2, which extends from the left to the right edge of the figure in FIG.
  • This long bolt 2 has an external thread 2 *, and at the left end a nut can be seen, which forms the stop point for a spring assembly 1, which consists of several packaged plates and must be clamped together (for example a heat exchanger).
  • a nut 4 which is also screwed onto the bolt 2, takes over this function, however, before tensioning the spring assembly, this must be compressed, for which purpose not only the nut 4 is screwed onto the bolt (to the left in the picture), but uses a hydraulic tensioning device is, which starts from a clamping cylinder 30, which (right in the picture) is supported on a counter bearing 20 which is screwed onto the other end of the bolt 2.
  • the counter bearing can be screwed further forwards or further back, for a long clamping path of approximately 100 mm or 200 mm, corresponding to the length of the (not extended) clamping cylinder 30.
  • a force coupling housing 31 is provided, here as a larger diameter cylindrical coupling piece with a radially (here to the front) window 32 through which the aforementioned retaining nut 4 is visible.
  • the size of the window 32 is such that a spanner can reach through the window and can be rotated through an angular segment in order to move the nut 4 forward.
  • the window must not be too large to the main force F1 of the hydraulic clamping cylinder 30 over the hollow cylindrical Housing and its cylindrical walls past the nut safely on the end face of the spring assembly.
  • a differential force F2 will be applied by the nut 4, but only in a short time Path section, the thread pitch previously described, for example, and only with the differential force F2, which the clamping cylinder (still) lacks, in order to arrive at the slightly higher force F0, which is sufficient for complete clamping.
  • the tensioning cylinder 30 can be loosened again, for this its hydraulic pressure is switched off, and with the nut acting as the counter bearing 20 the cylinder, if it is a single-acting cylinder, can be screwed back into its rest position, which can be done manually.
  • Plates 1 or the flange 1a are screwed on in order to carry out a further (or more) clamping processes in at least one further hydraulic thrust until the package of plates is firmly clamped together. Then the counter bearing 20 either screwed back or removed from the thread if, as will be explained later, it is designed as a split nut with a connecting sleeve.
  • a preferred drive mode which makes the use of a hand-operated key superfluous, is a pinion 6 which engages in the window 32 and which engages on a pinion 5 placed on the nut and can be driven by a cord wheel 7 by hand or by a mechanical drive.
  • the knurled wheel 7, which can be better seen in supervision in Figure 1a or in section in Figure 3, can take over the forward movement of the nut, and the cooperating elements of the cord wheel 7 and the Pinions 6 are movable together on an L-shaped plate carrier 43 along an axis 40 with the axial forward movement of the nut 4, which sliding axis 40 lies in a center 102, which is arranged above and laterally offset from the previously described main axis 100 on the power coupling housing is.
  • This driving of the drive 7, 6 can be seen more clearly in FIG. 4 in the upper area, which figure shows an enlarged detail of the power coupling housing.
  • the operation of the knurled drive 7,6 - here mechanically with a corded wheel - which can be pivoted about the axis 102 and is mounted on an L-shaped holding plate in such a way that it folds into the window 32 can be seen in FIG can and along the slide shaft 40 can move with the movement of the nut 4 (is slidable with sliding). After the end of the movement, it can be folded upwards again about the axis 102.
  • Figures 2, 3 and 4 are to be described together, since they are all closely related and each show different cuts.
  • the cutout shows the force coupling housing 31 most clearly in FIG. 4, how it engages over the nut 4 and forms an interior space that gives the nut 4 sufficient leeway, and additionally allows a pinion 5 to be attached to the nut, which is better seen in Figure 2.
  • the polygonal shape of the nut receives the correspondingly shaped inner recess 5a of the pinion 5 in a form-fitting manner, and with the schematically shown pinion 6 the drive described above engages in the window 32 in order to fit the pinion 5 attached to the nut and thus the nut in the axial direction To move axis 100 forward.
  • a shaft 40 can be seen on a support piece 42, which can be pulled out of the support piece 42 in its axial direction 102 on a handle 41 and the drive 6, 7, which is closer in FIG. 2 in an end view with the L-shaped plate 43 can be seen.
  • the drive 43, 6, 7 is longitudinally displaceable in the direction of the axis 100 and it can follow the movement of the nut 4. At the same time, pivoting about axis 102 is possible.
  • a centering ring 33 is provided which lies near the contact surface of the clamping cylinder 30 which engages in a cup-shaped recess on the housing in such a way that the power coupling housing 31 fits tightly against the bolt 2 Tilting is protected.
  • FIG. 5 the variant of Figure 5 is advantageous in terms of a slim design of the power coupling housing 31a, which in this embodiment has a different geometric shape and is elongated and closely adapted to the dimension of the nut 4a lying in it.
  • This force coupling housing 31a has an elongated cylinder section, but with a reduced diameter compared to FIG. 1, and a rear holding section 34, which is held together by a cylinder screw 33.
  • the clamping cylinder 30a is larger in diameter here, but greatly shortened, and in the variant of FIG. 5, it only has a small stroke, for which it is supported on the counter bearing 20 of the same design.
  • the main force F1 is transmitted from the tensioning cylinder via the slim support housing 31a to the flange 1a, also past the nut 4a and independently of the movement of the nut.
  • the clamping force F1 which is independent of the mother force, is the main part of the force required for flange mounting, while the Force component F2 can only enter at the last moment of tensioning and is only a fraction of the force applied by tensioning cylinder 30a.
  • the tie rod 2a which is attached to the end of the short bolt 2 in FIG. 5, forms the extension to which the counter bearing 20 is screwed.
  • the tie rod has a front screw section 2b with an internal thread in order to be screwed onto the bolt 2 with its thread 2 * , and a rear bolt section 2c with an external thread 2 * *, for fixing the counter bearing 20. Its length is measured by the length of the clamping cylinder 30a and this on the necessary stroke for clamping the flange 1a.
  • the specially designed two-area nut 4a is to be explained, which has a front pressure section 4c, which is cylindrical here, and a rear pinion section 4b, which is reduced in diameter and is also cylindrical. In between there is a slightly throaty transition area.
  • the rear sprocket section which has a reduced diameter, has radially outwardly projecting teeth into which a sleeve head wrench 50, which consists of a front sleeve section 52 and a projecting handle 51, engages.
  • the cylinder sleeve has a diameter which, together with the diameter of the rear pinion section 4b of the two-range nut 4a, does not form a larger overall diameter than the front pressure section 4c of the nut 4a, so that the slim support housing over the joined cylinder areas of the nut and key can fit tightly.
  • Bolts which are close together can be machined in this way, and the key can be moved with a slight axial backward movement and then pushed back onto the toothing of the tooth area 4b of the nut and turned further by a further angular segment. The nut 4a is thus moved forward, while the device operates as described in FIG. 1.
  • the window 32 is also provided in this power coupling case 31a; the handle 51 of the sleeve key 50 reaches through this window, as can be seen from FIG.
  • the assembly of the device according to FIG. 5 takes place in such a way that the two-range nut 4a is first screwed onto the short bolt 2 and is loosely moved against the flange 1a. Then the force coupling housing 31a, already assembled with the key 50, is put over the nut 4a and with a screw 33, which extends transversely to the axis 100, fixes the housing 31a, for example also with a centering ring 33, as was explained in FIG. 4. The tie rod 2a is then inserted through the rear axial opening of the force coupling housing 31 and screwed onto the end of the bolt 2a. This screwing can also take place before the force coupling housing 31a is plugged on.
  • clamping cylinder 30a is threaded and the nut 20 is fixed as a counter bearing behind the clamping cylinder.
  • the device is then ready for operation and the flange 1a is tensioned by applying hydraulic pressure to the clamping cylinder. With the key 50 the mother can be moved up.
  • the coaxial counter bearing 20 will be explained with reference to FIG. 5.
  • a sleeve-like union piece 20a is provided, which holds together in the rear region a section of the diameter 21, which is reduced in diameter, of the nut 21a, 21b, which is divided into two or more parts. If the sleeve piece 20a is pushed over the reduced-diameter holding section, the nut cannot be disassembled into its parts and can only be rotated on the thread 2 * of the bolt 2 with its internal thread.
  • the nut breaks down into its two or more elements and can be removed in the radial direction from the thread of the bolt 2 without the counter bearing 20 having to be screwed back all the way.
  • This configuration of the counter bearing is particularly advantageous if the stroke distance of the tensioning cylinder 30 or 30 a is to be retracted or moved in with the counter bearing 20. With single-acting hydraulic cylinders, retraction corresponds to the (manual) reset of the cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un procédé permettant de monter des plateaux en paquet (1) sur ou au-dessus d'un boulon (2) tout en les serrant par une importante force axiale. D'abord, une force hydraulique (30a, 30, F1), parallèle à l'axe (100) du boulon fileté (2), est appliquée pour comprimer les plateaux (1). Ensuite, un écrou tendeur (4, 4a) est vissé sur le boulon (2) dans le sens de rotation le rapprochant des plateaux serrés hydrauliquement. Lors de ce vissage, sont appliquées sur l'écrou (4, 4a) seulement les forces nécessaires pour faire avancer l'écrou sur le filetage du boulon (2) et l'amener au contact avec les plateaux en paquet (1; 1a) sans que les plateaux (1; 1a) déjà serrés par le dispositif hydraulique (30, 30a) n'exercent de contre-forces ni de forces de tension notables sur les écrous (4, 4a). L'invention permet d'appliquer, plus facilement et plus rapidement, une grande force de serrage par le dispositif hydraulique pour serrer les plateaux et simultanément décharger l'écrou qui ainsi n'a plus à développer de force supplémentaire lors de son vissage vers les plateaux. Par son filetage et son mouvement d'avancement, l'écrou peut cependant assurer le positionnement réalisé par le dispositif de serrage hydraulique. Ainsi, il n'a plus pour seule fonction que la fixation de position.
PCT/DE1999/000626 1998-03-09 1999-03-09 Procede permettant de monter les plateaux d'un echangeur de chaleur devant etre serrees WO1999046089A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99917775A EP1062076A2 (fr) 1998-03-09 1999-03-09 Procede permettant de monter les plateaux d'un echangeur de chaleur devant etre serrees

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19810039.6 1998-03-09
DE1998110039 DE19810039C2 (de) 1998-03-09 1998-03-09 Montageverfahren für elastisch nachgiebig paketierte Platten und eine Vorrichtung zur Durchführung dieses Verfahrens

Publications (2)

Publication Number Publication Date
WO1999046089A2 true WO1999046089A2 (fr) 1999-09-16
WO1999046089A3 WO1999046089A3 (fr) 1999-11-11

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ID=7860211

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PCT/DE1999/000626 WO1999046089A2 (fr) 1998-03-09 1999-03-09 Procede permettant de monter les plateaux d'un echangeur de chaleur devant etre serrees

Country Status (3)

Country Link
EP (1) EP1062076A2 (fr)
DE (1) DE19810039C2 (fr)
WO (1) WO1999046089A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2821182A2 (fr) 2013-07-05 2015-01-07 ITH GmbH & Co. Kg Dispositif de serrage pour l'étirement d'un boulon fileté
CN111774853A (zh) * 2020-06-22 2020-10-16 东风汽车零部件(集团)有限公司襄阳粉末冶金分公司 一种发动机摇臂的摇臂轴与高强螺栓自动装配装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012112797B3 (de) * 2012-12-20 2014-02-13 Siempelkamp Tensioning Systems GmbH Hydraulische Spannvorrichtung

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US2760393A (en) * 1953-12-14 1956-08-28 Whitehead & Kales Co Bolt tensioning apparatus
GB896430A (en) * 1958-09-26 1962-05-16 John Louis Biach Bolt tensioning and nut-seating apparatus
FR2208756A1 (fr) * 1972-12-01 1974-06-28 Wirth Co Kg Masch Bohr
US4407165A (en) * 1981-03-30 1983-10-04 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Apparatus for accurately preloading auger attachment means for frangible protective material
US4604918A (en) * 1985-09-20 1986-08-12 Haskel, Inc. Apparatus for applying tension to studs
US4708036A (en) * 1984-02-07 1987-11-24 Haskel, Inc. Stud tensioning apparatus
GB2193549A (en) * 1986-08-08 1988-02-10 Hydra Tight Ltd Bolt tensioner
EP0408239A1 (fr) * 1989-07-11 1991-01-16 Hedley Purvis Limited Ecrous d'assemblage rapide
WO1991001198A1 (fr) * 1989-07-14 1991-02-07 Richard Paul Warren Procede de controle de la compression d'un joint d'etancheite pendant le serrage d'un organe de fixation
EP0609924B1 (fr) * 1993-02-05 1997-03-19 Hydra-Tight Limited Dispositif tendeur

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DE2243045A1 (de) * 1972-09-01 1974-03-21 Kloeckner Werke Ag Schraubenspannvorrichtung
US4150477A (en) * 1977-09-21 1979-04-24 Exxon Production Research Company Pre-loading joint flanges

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Publication number Priority date Publication date Assignee Title
US2760393A (en) * 1953-12-14 1956-08-28 Whitehead & Kales Co Bolt tensioning apparatus
GB896430A (en) * 1958-09-26 1962-05-16 John Louis Biach Bolt tensioning and nut-seating apparatus
FR2208756A1 (fr) * 1972-12-01 1974-06-28 Wirth Co Kg Masch Bohr
US4407165A (en) * 1981-03-30 1983-10-04 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Apparatus for accurately preloading auger attachment means for frangible protective material
US4708036A (en) * 1984-02-07 1987-11-24 Haskel, Inc. Stud tensioning apparatus
US4604918A (en) * 1985-09-20 1986-08-12 Haskel, Inc. Apparatus for applying tension to studs
GB2193549A (en) * 1986-08-08 1988-02-10 Hydra Tight Ltd Bolt tensioner
EP0408239A1 (fr) * 1989-07-11 1991-01-16 Hedley Purvis Limited Ecrous d'assemblage rapide
WO1991001198A1 (fr) * 1989-07-14 1991-02-07 Richard Paul Warren Procede de controle de la compression d'un joint d'etancheite pendant le serrage d'un organe de fixation
EP0609924B1 (fr) * 1993-02-05 1997-03-19 Hydra-Tight Limited Dispositif tendeur

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Title
"Un Facteur de Sécurité: le serrage hydraulique de boulons" ENERGIE FLUIDE., Bd. 11, Nr. 54, September 1972 (1972-09), Seiten 45-48, XP002114290 CFE. PARIS., FR ISSN: 0291-8331 *
VINCIGUERRA ET AL: "Hydraulic Tightening of Nuts and Couplings" HYDRAULIC PNEUMATIC POWER., Bd. 14, Nr. 160, April 1968 (1968-04), Seiten 230-231, XP002114289 TRADE AND TECHNICAL PRESS LTD. MORDEN., GB *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2821182A2 (fr) 2013-07-05 2015-01-07 ITH GmbH & Co. Kg Dispositif de serrage pour l'étirement d'un boulon fileté
US9623524B2 (en) 2013-07-05 2017-04-18 Ith Gmbh & Co. Kg Tensioning device for expanding a threaded bolt
CN111774853A (zh) * 2020-06-22 2020-10-16 东风汽车零部件(集团)有限公司襄阳粉末冶金分公司 一种发动机摇臂的摇臂轴与高强螺栓自动装配装置

Also Published As

Publication number Publication date
EP1062076A2 (fr) 2000-12-27
DE19810039A1 (de) 1999-09-23
DE19810039C2 (de) 2002-09-12
WO1999046089A3 (fr) 1999-11-11

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