EP1032768A2 - Dispositif de fixation - Google Patents

Dispositif de fixation

Info

Publication number
EP1032768A2
EP1032768A2 EP98965079A EP98965079A EP1032768A2 EP 1032768 A2 EP1032768 A2 EP 1032768A2 EP 98965079 A EP98965079 A EP 98965079A EP 98965079 A EP98965079 A EP 98965079A EP 1032768 A2 EP1032768 A2 EP 1032768A2
Authority
EP
European Patent Office
Prior art keywords
clamping device
springs
tube piece
pipe section
plate springs
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.)
Withdrawn
Application number
EP98965079A
Other languages
German (de)
English (en)
Inventor
Werner Labs
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.)
Labs GmbH
Original Assignee
Labs GmbH
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 Labs GmbH filed Critical Labs GmbH
Publication of EP1032768A2 publication Critical patent/EP1032768A2/fr
Withdrawn legal-status Critical Current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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/04—Screwed connections specially modified in view of tensile load; Break-bolts for maintaining a tensile load
    • F16B31/043—Prestressed connections tensioned by means of liquid, grease, rubber, explosive charge, or the like
    • 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
    • B25B5/00—Clamps
    • B25B5/14—Clamps for work of special profile
    • B25B5/147—Clamps for work of special profile for pipes
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/89—Use of a hydraulic action
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members

Definitions

  • the invention relates to a tensioning device with an inner tube piece and a concentric outer tube piece, which can be clamped against one another in the direction of the tube axes.
  • clamping devices are known in particular as hydraulic clamping devices and are used, for example, to press parts arranged on a shaft with very high force against a stop.
  • the clamping device is screwed onto the shaft end by means of a thread on the inner pipe section until it rests on the workpiece.
  • a hydraulic fluid is introduced between the outer and inner pipe section, which ensures that the outer pipe section is pressed firmly against the workpiece, so as to generate the required biasing force.
  • the invention is therefore based on the object of further developing a generic tensioning device in such a way that it can be produced simply and inexpensively.
  • This object is achieved in that a plurality of plate springs are arranged spaced apart from one another between the tube pieces, an inner part of at least one plate spring interacting with the inner tube piece and an outer part of at least one plate spring interacting with the outer tube piece.
  • the spaced arrangement of the plate springs leads to an energy store, which can be dimensioned as desired by the number of plate springs.
  • the spacing is designed according to the invention so that there is as little or no friction as possible between the plate springs.
  • the disc springs can all be connected to the inner and the outer tube piece. However, it is sufficient if an inner part of at least one plate spring interacts with the inner tube piece and an outer part of at least one plate spring with the outer tube piece. The sum of the force of all disc springs is then transmitted via spacers which keep the disc springs spaced apart.
  • spacers can be, for example, ring disks or so-called snap rings.
  • Snap rings have the advantage that they can be particularly easily attached to the inner and / or outer tube.
  • a particularly preferred embodiment provides that the disc springs are connected to the pipe section on the inside and / or outside by means of a thread.
  • threads on the outer edge of the disc springs do not significantly affect the durability and function of the disc springs.
  • the arrangement of Threads on the inner and on the outer edge of the disc springs and their interaction with threads on the outside of the inner pipe section and on the inside of the outer pipe section lead to a simple construction of the tensioning device.
  • the plate springs have at least one notch on the outer edge and / or on the inner edge.
  • Such an incision allows the disc springs to be bent such that the inner and outer circumferential lines of the disc spring preferably assume a spiral shape.
  • Disc springs placed against each other do not touch each other, but only point by point.
  • the spiral shape of the inner peripheral surface or the outer peripheral surface can be used to cooperate with a thread on the inner or outer tube piece.
  • the circumferential surface of the disc spring inside and outside can be matched to the shape of a thread.
  • the plate spring is made of thin sheet metal, so that the subsequent bending of the inner or outer edge of the plate spring describes a thread turn.
  • the thread of the inner and outer sleeve is matched to the edge shape of the disc spring and is designed, for example, as a flat or round thread.
  • the device can be adapted to any application. Depending on the construction of the tensioning device, it may happen that the inner tube piece can be rotated against the outer tube piece, and means are therefore proposed to limit rotation of the inner tube piece to the outer tube piece.
  • FIG. 1 shows a section through a tensioning device screwed onto a shaft end without tension
  • FIG. 2 the clamping device according to FIG. 1 with the tool placed on the shaft end
  • FIG. 3 shows a clamping device preloaded with the tool
  • FIG. 4 shows a clamping device which is screwed onto the shaft end against the clamping surface
  • FIG. 5 the clamping device according to FIG. 4 with the tool removed
  • FIG. 6 shows a section through an alternative embodiment of a tensioning device according to the invention and Figure 7 shows an example of a screw plate spring.
  • the tensioning device 1 essentially consists of an inner tube piece 2, an outer tube piece 3 arranged concentrically thereto and five disc springs 4, 5, 6, 7 and 8 arranged in between.
  • the inner pipe section 2 has an internal thread 9 with which it can be screwed onto a shaft end 10.
  • the inner pipe section 2 has on its side facing away from a clamping surface 11 an inner flange 12 and on its side facing the clamping surface 11 a radially projecting washer 13 is fitted into the inner pipe section 2.
  • This ring disk 13 can, for example, also be designed as a snap ring in order to be able to be clamped as easily as possible into a groove 14 milled on the outside of the inner tube piece 2.
  • the outer pipe section 3 has an inner flange 15 at its end facing the clamping surface 11 and an inward-pointing positioning ring 16 at the other end of the pipe section.
  • the inner pipe section 2 has a thread 17 on its outside and the outer pipe section 3 has a thread 18 on its inside.
  • the disc springs arranged between the inner and outer pipe section also have threads 19 and 20 on their radial inner and outer surfaces, so that the plate springs 4, 5, 6, 7, 8 can be screwed between the pipe sections.
  • the snap ring 13 and the positioning ring screwed onto the internal thread 18 of the outer tube piece 3 removable.
  • the clamping device 1 assembled in this way can be screwed onto a shaft end 10 as a compact unit, so that the flange 15 of the outer tube piece 3 touches the clamping surface 11.
  • a hydraulic tool 21 is placed on the shaft end 10.
  • This hydraulic tool 21 slides over the thread 22 of the shaft end and can be screwed onto the internal thread 19 of the outer tube piece 3 by means of an external thread 23.
  • This hydraulic tool 21 is first screwed onto the thread 19 of the outer pipe section until the clamping tool rests on the flange 12 of the inner pipe section 2. Hydraulic fluid is then pressed into the annular chamber 24 via channels, not shown, so that a force is exerted on the annular piston 26 via the seal 25.
  • the clamping device 1 together with the hydraulic tool 21 can be screwed against the clamping surface 11 in the pretensioned state.
  • the hydraulic tool 21 can be relaxed. Then it will unscrewed from the tensioning device 1 in accordance with the arrow 27 and taken from the shaft 10, so that ultimately, as shown in FIG. 5, the entire force is absorbed by the plate springs 4 to 8.
  • the flow of force then passes from the clamping surface 11 to the flange 15 of the outer pipe section 3 and via the internal thread 18 of the outer pipe section 3 to the external thread 19 of the plate springs 4 to 8.
  • the radially inner threads 20 of the plate springs transmit the force further via the external thread 17 into the inner pipe section 2 and from there via the internal thread 9 of the inner pipe section 2 onto the external thread 22 of the shaft 10.
  • FIG. 6 shows a further tensioning device 30, in which the plate springs 31 to 35 have neither an external thread nor an internal thread.
  • annular spacers 36 to 39 are provided between the springs 31 to 35 at the radially inner end of the springs and further annular spacers 40 to 43 are arranged at the radially outer end of the plate springs 31 to 35 between the plate springs.
  • These spacers 36 to 43 can simply be inserted between the plate springs 31 to 35.
  • the spacers 36 to 43 are fitted into corresponding grooves on the outside of the inner pipe section 44 and on the inside of the outer pipe section 45.
  • the rest of the structure corresponds to the structure of the clamping device 1 and the mode of operation also corresponds to the sequence illustrated with reference to FIGS. 1 to 5.
  • FIG. 7 A preferred embodiment of the plate spring is shown in Figure 7.
  • This plate spring 46 has an outer edge 47 and an inner edge 48.
  • an incision 49 is provided which extends approximately to extends the neutral line of the disc spring.
  • the incision 49 widens into an opening 50 which is designed as a bore.
  • only one incision 49 is shown.
  • several such incisions can also be provided on the outer circumference 47 in order to facilitate the bending of the plate spring or to achieve a greater slope.
  • the inner circumference 48 in which, in the present exemplary embodiment, an incision 51 is provided which ends in a bore 52 on the neutral line of the plate spring.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

L'invention concerne un dispositif de fixation comprenant un élément tuyau interne et un élément tuyau externe placé de façon concentrique. Des rondelles Belleville, placées entre ces deux éléments tuyaux, serrent l'un contre l'autre l'élément tuyau interne et l'élément tuyau externe dans la direction des axes de tuyaux. Ces rondelles Belleville sont espacées l'une de l'autre afin de permettre l'absorption des forces de serrage importantes générées entre l'élément tuyau interne et l'élément tuyau externe.
EP98965079A 1997-11-20 1998-11-18 Dispositif de fixation Withdrawn EP1032768A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19751350 1997-11-20
DE19751350 1997-11-20
DE19835810 1998-08-07
DE19835810 1998-08-07
PCT/DE1998/003409 WO1999027260A2 (fr) 1997-11-20 1998-11-18 Dispositif de fixation

Publications (1)

Publication Number Publication Date
EP1032768A2 true EP1032768A2 (fr) 2000-09-06

Family

ID=26041749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98965079A Withdrawn EP1032768A2 (fr) 1997-11-20 1998-11-18 Dispositif de fixation

Country Status (3)

Country Link
EP (1) EP1032768A2 (fr)
DE (1) DE19848902A1 (fr)
WO (1) WO1999027260A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2499164C1 (ru) * 2012-06-20 2013-11-20 Виталий Олегович Жданов Стыковочный узел
JP6243750B2 (ja) * 2014-02-24 2017-12-06 三木プーリ株式会社 ねじ締結具
GB2580101B (en) * 2018-12-21 2021-08-25 Caterpillar Energy Solutions Gmbh Device for tensioning a connecting element
CN109827853B (zh) * 2019-04-03 2020-12-04 河南交通职业技术学院 一种压剪试验机及其快速锁紧装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127157A (en) * 1964-03-31 James e
US3098643A (en) * 1962-03-15 1963-07-23 Albert A Ondrejka Shock and vibration isolator
GB2130737A (en) * 1982-11-13 1984-06-06 Maurice David Chattaway Clamping tension indicator
US4723352A (en) * 1985-06-25 1988-02-09 Conn-Weld Industries, Inc. Method of applying and removing fluid actuated nut
GB2299641A (en) * 1995-04-05 1996-10-09 Hydraulic Tensioning Technolog Hydraulic tensioning nut

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9927260A2 *

Also Published As

Publication number Publication date
DE19848902A1 (de) 1999-08-26
WO1999027260A3 (fr) 1999-09-10
WO1999027260A2 (fr) 1999-06-03

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