EP0919257B1 - Dispositif de serrage pour un système de rampe - Google Patents

Dispositif de serrage pour un système de rampe Download PDF

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Publication number
EP0919257B1
EP0919257B1 EP98118947A EP98118947A EP0919257B1 EP 0919257 B1 EP0919257 B1 EP 0919257B1 EP 98118947 A EP98118947 A EP 98118947A EP 98118947 A EP98118947 A EP 98118947A EP 0919257 B1 EP0919257 B1 EP 0919257B1
Authority
EP
European Patent Office
Prior art keywords
bearing
individual
boom system
measuring
base element
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
EP98118947A
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German (de)
English (en)
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EP0919257A2 (fr
EP0919257A3 (fr
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.)
METZ AERIALS GMBH & CO KG
Original Assignee
Metz Aerials & Co KG GmbH
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Publication date
Application filed by Metz Aerials & Co KG GmbH filed Critical Metz Aerials & Co KG GmbH
Publication of EP0919257A2 publication Critical patent/EP0919257A2/fr
Publication of EP0919257A3 publication Critical patent/EP0919257A3/fr
Application granted granted Critical
Publication of EP0919257B1 publication Critical patent/EP0919257B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C27/00—Fire-fighting land vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
    • E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
    • E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic

Definitions

  • the invention relates to a device for clamping a boom system of a swiveling, tilting and telescopic Tool over a support element on one Bogie of a vehicle, such as an emergency vehicle the fire department or the like, with a measuring device in the clamping area for the current determination of the load of the boom system.
  • the boom system is clamped, in particular a ladder set in general on a so-called Bogie.
  • the uprighting should and tilting the boom system.
  • the attachment to the turret is not done directly about a basic element of the ladder set, but there are for this purpose, floating support elements are provided on the turret, which form the bogie with the turret. Because of the U-shaped cross-sectional profile of the conductor elements of the Ladder set is a connection of the same to the support element only in the outer area of the outer conductor element, So the base element is possible to get inside not to obstruct the ladder set and also to further conductor elements within the U-shaped base element to be able to store.
  • the carrier element in the longitudinal direction of the boom system designed such that it is the same as a bending beam Strength comes close to the swivel bending area to be able to optimize, especially what the lowering of the Boom system below the horizontal concerns.
  • the Width of the support element is due to the width of the outrigger boom system, i.e. its ladder parts determined, by the total width of the construction so given to minimize on the bogie.
  • a measuring system is known in which the bending stress of the boom system in / on the Clamping point is measured.
  • the current distance measurement is carried out by the boom with knowledge of the error rate.
  • Boom systems in the form of turntable ladders now work by increasing the basket capacity (from 2 to 3 man baskets), the provision of launcher inserts etc. the loads no longer in the primarily vertical of the U-shaped profile of the ladder elements, but outside and, among other things, cause non-negligible Torsional moments.
  • the Raising angle of the aerial ladder system essentially the connecting elements of each Claim conductor elements with each other, d. H. the Ropes and / or the hydraulic cylinders up to storage in the clamping point.
  • the invention has the object Basically, a device of the type mentioned to further develop that at the clamping point reliable interception of the constraining forces and moments and a reliable detection of the same is possible.
  • this object is achieved by a Device of the type mentioned in the introduction solved that the clamping of the boom system by a static certain storage with measuring devices for measurement of the individual bearing forces is formed. So it's as Fixing a boom system a statically determined Storage with the possibility of measuring the individual Bearing forces are provided in this clamping.
  • the design according to the invention also provides for this ensured that the measuring devices with the clamping be moved and so all three attacking directly Can capture forces and moments in the clamping. In this way, those acting on the boom system external and internal forces and moments individually classified and evaluated. Because with a boom system of the mentioned embodiment, the carrier element of the Mount is erected and the base element and the support element connecting storage "rigid" between this is arranged, but moves with the clamping are no additional corrective measures due to changed kinematic conditions of the Erection system, for example the erection cylinder etc. required.
  • Base element of the boom system can be detached via the bearing is fixed on the support element.
  • the number of individual bearings is chosen so that a statically determined storage of the entire system, however, the number of individual warehouses is minimal.
  • This Requirement is met in that the storage by at least three individual bearings are formed.
  • the individual warehouses with regard to their storage centers symmetrical to the plane of symmetry in the longitudinal direction of the base element of the boom system.
  • the dimensions of this bearing arrangement are a matter of course of the dimensions of the end of the boom, that is Base element and / or the width or length of the carrier element certainly. This makes it possible to easily Way to ensure a clear storage and the to meet measurement requirements for this storage.
  • the individual bearings are particularly advantageous for projection on the support element in the apices of an isosceles Triangle. To the lowest possible height to realize, it is preferably provided that the individual bearings in a common plane between the base element of the boom system and the support element are. But it can also be at least one of the individual bearings shifted vertically compared to the others his.
  • the Measuring elements each with its ends in a bore of a carrier component fixed on the carrier element mounted load measuring pin, its middle Area over an eye bed with one on the base element specified component for radial power transmission in Connection is established.
  • Such individual bearings and measuring elements can be easily between at the interface level realize the base element and the support element.
  • the Load measuring pin not only serves as part of the Measuring element, but at the same time as a component of individual storage. This embodiment has seen kinematically two relative degrees of freedom, namely one axial displacement and a rotation around the cylinder or pin axis.
  • the load measuring pin is designed as a hollow cylinder the inside of which measured the deformation (by bending) can be.
  • strain gauges are strain gauges provided on the inside of the bolts.
  • DMS Strain gauges
  • the respective components of the Forces determined by measurement technology are due to the arrangement of the load pin.
  • the coordinate of this radial load plane is coordinated with the measuring system.
  • the strain gauges are for accurate and error-free recording each in the area of the load center of the load measuring pin arranged.
  • a device for processing the Measured values provided, as from the strain gauges measured moments and forces according to the equilibrium conditions to be taken into account and to be compared with permissible values Values must be determined. To when the limit is reached all initiated movements of the boom system being able to slow down or stop is preferred one that can be activated when the permissible measured value is exceeded Alarm unit provided, which is in training can be an acoustic alarm unit. Furthermore, at least one display device is for output of the measured values determined and thus for information of the provided by the respective operator.
  • the Single bearing a spherical bearing that is, a spherical bearing in the eye bed, on to relative movements, deformations and record flight deviations so that the kinematic Tolerance remains intact.
  • every single bearing point is kinematically compatible against angular errors and / or misalignments, because a single spatial shift at a storage location relative to the other corresponding turns around the Triangle sides as well as displacements according to the Degrees of freedom in the individual bearings.
  • the emergency vehicle 1 shown in FIG. 1 has known way a vehicle chassis 2 with front wheels 3a and rear wheels 3b and one of the vehicle chassis 2 supported vehicle body 4 in the form of a bogie from a turret 4a and a support member 5, the for swiveling with inclination to the horizontal or is articulated relative to the underground.
  • the Carrier element 5 carries a boom system 6 of several displaceable against each other and thereby a variable in length Ladder sections forming supporting beams.
  • an erection cylinder 7, which has its other end at the base of the turret 4 is set.
  • FIGS. 2 and 3 serves the carrier element 5 as a receptacle for the lower or outer conductor part 8, called base element for short, the Boom system 6.
  • This is the respective basic element 8 on the support element 5 via a statically determined storage clamped, which in the illustrated embodiment 2 and 3 each by three individual bearings B1, Ar1, Al1 or B2, Ar2 and Al2 is formed. 6 these bearings are shown schematically and by Al, Ar as well as B * and B. 2 and 3 also to the three individual bearings B1, Ar1, Al1 are located or B2, Ar2 and Al2 in one plane between the base element 8 and the carrier element 5. The same applies to the individual bearings Al, Ar and B in Fig. 6, while the bearing B * vertical to the bearings Al and Ar by the height c is moved out of the plane.
  • the amount of triangle formed by the sides b and a becomes a1 designated.
  • a Cartesian coordinate system is in Fig. 6 drawn, the axes or coordinates with x, y and z are designated. Such a Cartesian Coordinate system is used in analytical processes Breakdown of force and moment vectors is common.
  • the y-axis represents in the illustrated embodiment Bisector of side b, on which then that too Camp B is located.
  • Figs. 2 and 3 shows themselves that this y-axis of the plane of symmetry of the carrier element and the base element of the boom system in the longitudinal direction of the boom.
  • the origin the Cartesian coordinate system is in the middle on the connecting line b between the two on the X-axis arranged individual bearings Al and Ar.
  • the bearing arrangement is of the three individual bearings selected so that they are in one Connection level between the bottom of the base element 8 and the top of the carrier element 5 are.
  • the dimensions of the bearing arrangement are due to the Dimensions of that characterized by the base element 8 Cantilever end and the width or length of the support element certainly.
  • Base element 8 each on the underside of its longitudinal strips a and b via the individual bearings Ar2 and Al2 or Ar1, Al1 clamped on the support element 5, while the bearing B2 or B1 set on the underside of a rung 10 is.
  • the individual warehouse B1 or B2 is located at the end of a boom 6.
  • the bearing B1 has one in the form of a hollow cylinder trained load pin 11B, with its Bolt ends 12a, 12b each in a bearing bore 13a, 13b of a carrier component 14 is mounted.
  • a backup 15 protects the load measuring pin 11B from rotation and axial Emigration due to friction.
  • spacer elements 16 there is an axial adjustment in the z direction drawn load and measurement level LM and the load elements (Calibration).
  • a cantilever part 18 firmly connected to the latter guided radially by the load measuring pin 11B. That way made a detachable connection. A shift is only in the axial direction, i.e. along the bolt axis S possible. Furthermore, the power transmission from the component 18 on the component 14 only radially.
  • strain gauges 22a, 22b are on the inside of the load pin 11B parallel to the pin axis S in the area of the Longitudinal center L .
  • a strain gauge 22a in the z direction and a strain gauge 22b in the x direction arranged.
  • Such strain gauges 22a, 22b mostly consist of a carrier made of paper or plastic, on which a resistance wire applied or the type of printed circuit is made. The resistance of such a strain gauge changes with its length and becomes out for this reason for static and dynamic measurements used.
  • strain gauges 22a, 22b are stretched and compressed on elastically deformable Bodies, here the load measuring bolts 11B, forces, Pressures, tensions, moments and accelerations or the like measured.
  • the strain gauges are for this purpose 22a, 22b on the deforming load measuring pin 11B for example applied by gluing.
  • FIGS. 2 and 3 we refer below to FIGS. 2 and 3, in those embodiments for two different Bearing arrangements are shown.
  • Fig. 2 is the bearing arrangement with respect to the individual pin axes symmetrical to the plane of symmetry in the longitudinal direction of the Boom 6 or base element 8 (y, z plane in Fig. 6).
  • the axes of the load measuring bolts 11Ar and 11Al are in place perpendicular to this plane and cursed. they form together an axis of rotation that is perpendicular to the y, z plane stands.
  • the pin axis of the load measuring pin 11B is in this plane of symmetry and is perpendicular to the z, x plane (see also Fig. 6). Camp B1 is mainly on End of the base element 8 and thus the boom 6 is arranged.
  • Fig. 3 is the Bearing arrangement with respect to the individual pin axes not symmetrical to the x, z plane, i.e. the symmetry plane in Longitudinal direction of the boom 6 or base element 8.
  • Die Axis 11Ar of the single bearing Ar2 is parallel to this Level, the axis of the load measuring pin 11Al of the single bearing Al2 perpendicular to this plane.
  • the distances to the centers the force transmission in the two load measuring bolts 11Ar and 11Al are again symmetrical to the y-, z plane and aligned. They are also perpendicular to the y-, z plane arranged.
  • the arrangement is interchangeable.
  • the Pin axis of the load measuring pin 11B of the single bearing B2 lies in the plane of symmetry and is perpendicular to the z-, x plane. Again, it is primarily at the end of the boom 6 or base element 8 arranged.
  • this bearing arrangement is more advantageous, as they are free of internal tension in the bearing points with each other due to the deformation of the boom end and carrier element.
  • This bearing arrangement is corresponding also technically free of errors on it based.
  • FIG. 6 A further embodiment variant can be seen in FIG. 6, where the single warehouse B * is not on one level Bearings Ar and Al lies, but in the vertical around the Distance c is shifted. This only changes the evaluation of the moment balance for the torsional moments Ar by the additional operation + (c * Bx).

Claims (18)

  1. Dispositif de fixation pour un système de rampe (6) d'un outil pivotant, inclinable ou télescopique au moyen d'un élément porteur (5) sur la tourelle (4A) d'un véhicule, tel un véhicule d'intervention des pompiers ou similaire, comprenant un dispositif de mesure (11Ar, 11Al, 11B, 22a, 22b) dans la zone de fixation pour la détermination instantanée de la charge du système de rampe (6), caractérisé en ce que la fixation du système de rampe (6) est constituée par une disposition de paliers (Ar1, Al1, B1, Ar2, Al2, B2, Ar, Al, B, B*) déterminée statiquement comprenant des dispositifs de mesure (11Ar, 11Al, 11B, 22a, 22b) pour la mesure des forces individuelles de palier.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'un élément de base (8) du système de rampe (6) est monté amovible sur l'élément porteur (5) par l'intermédiaire de la disposition de paliers (Ar1, Al1, B1, Ar2, Al2, B2, Ar, Al, B, B*).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la disposition de paliers (Ar1, Al1, B1, Ar2, Al2, B2) est constituée d'au moins trois paliers individuels.
  4. Dispositif selon la revendication 3, caractérisé en ce que les paliers individuels (Ar1, Al1, B1, Ar2, Al2, B2) sont disposés symétriques au plan de symétrie dans la direction longitudinale de l'élément de base (8) du système de rampe (6), en ce qui concerne leurs centres de palier (L).
  5. Dispositif selon la revendication 4, caractérisé en ce que les paliers individuels (Ar1, Al1, B1, Ar2, Al2, B2, Ar, Al, B, B*) sont situés dans les angles d'un triangle équilatéral par projection sur l'élément porteur (5).
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les paliers individuels (Ar1, Al1, B1, Ar2, Al2, B2, Ar, Al, B) sont disposés dans un plan commun entre l'élément de base (8) du système de rampe (6) et l'élément porteur (5).
  7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'on prévoit au moins un palier individuel (B1) comprenant une articulation à rotule (20).
  8. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'on prévoit dans chaque palier individuel (Ar1, Al1, B1, Ar2, Al2, B2) des éléments de mesure (11Ar, 11Al, 11B, 22a, 22b).
  9. Dispositif selon la revendication 8, caractérisé en ce que les éléments de mesure (11Ar, 11Al, 11B, 22a, 22b) présentent chacun un axe de mesure de charge (11Ar, 11Al, 11B) logé chacun par ses extrémités (12a, 12b) dans un perçage (13a, 13b) ménagé dans une pièce de construction porteuse (14) fixée sur l'élément porteur (5), dont la zone médiane est reliée par l'intermédiaire d'un palier borgne (17) à une pièce de construction (18) fixée sur l'élément de base (8) pour la transmission de force radiale.
  10. Dispositif selon la revendication 9, caractérisé en ce que l'axe de mesure de charge (11Ar, 11Al, 11B) est conformé en cylindre creux.
  11. Dispositif selon l'une quelconque des revendications 8 à 10, caractérisé par des jauges extensométriques (22a, 22b) disposées sur la face intérieure de l'axe de mesure de charge (11B).
  12. Dispositif selon la revendication 11, caractérisé en ce que les jauges extensométriques (22a, 22b) sont disposées chacune dans la zone du centre de palier (L) de l'axe de mesure de charge (11B).
  13. Dispositif selon l'une quelconque des revendications 1 à 12, caractérisé par un dispositif de traitement des valeurs mesurées.
  14. Dispositif selon l'une quelconque des revendications 1 à 13, caractérisé par un dispositif d'alarme activé par le dépassement d'une valeur de mesure admissible.
  15. Dispositif selon la revendication 14, caractérisé par un dispositif d'alarme acoustique.
  16. Dispositif selon l'une quelconque des revendications 8 à 15, caractérisé par un frein d'écrou (15) pour l'axe de mesure de charge (11B).
  17. Dispositif selon l'une quelconque des revendications 8 à 16, caractérisé par des éléments d'écartement (16) pour l'ajustement axial.
  18. Dispositif selon l'une quelconque des revendications 1 à 17, caractérisé en ce que chaque palier individuel présente un segment sphérique.
EP98118947A 1997-10-17 1998-10-07 Dispositif de serrage pour un système de rampe Expired - Lifetime EP0919257B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19745923A DE19745923A1 (de) 1997-10-17 1997-10-17 Vorrichtung zum Einspannen eines Auslegersystems
DE19745923 1997-10-17

Publications (3)

Publication Number Publication Date
EP0919257A2 EP0919257A2 (fr) 1999-06-02
EP0919257A3 EP0919257A3 (fr) 2000-10-11
EP0919257B1 true EP0919257B1 (fr) 2004-12-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98118947A Expired - Lifetime EP0919257B1 (fr) 1997-10-17 1998-10-07 Dispositif de serrage pour un système de rampe

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EP (1) EP0919257B1 (fr)
AT (1) ATE285273T1 (fr)
DE (2) DE19745923A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059877C1 (de) * 2000-12-01 2002-05-16 Guenzburger Steigtechnik Munk Schwenkbarer Handlauf
DE10353134A1 (de) * 2003-11-14 2005-06-09 Marte Feuerwehrfahrzeuge Feuerwehrtechnologie Ges.M.B.H. Rettungshubgerät
DE102005060185A1 (de) * 2005-12-14 2007-06-28 Repower Systems Ag Fahrzeug, Trägereinheit und Verfahren zum Transport eines großvolumigen Bauteils mit Überlänge
DE102010050683A1 (de) * 2010-11-06 2012-05-10 Jungheinrich Aktiengesellschaft Flurförderzeug mit Verformungssensor im Neigezylinder

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2205968A1 (de) * 1972-02-09 1973-08-16 Kloeckner Humboldt Deutz Ag Fahrbare ausziehleiter, insbesondere kraftfahrdrehleiter
US4456093A (en) * 1981-06-16 1984-06-26 Interstate Electronics Corp. Control system for aerial work platform machine and method of controlling an aerial work platform machine
DE3322270C2 (de) * 1983-06-21 1985-10-24 Liebherr-Werk Bischofshofen GmbH, Bischofshofen Fahrwerk, vorzugsweise Raupenfahrwerk für Krane
DE3340438C2 (de) * 1983-11-09 1986-08-07 Dr. Brandt GmbH, 4630 Bochum Meßanordnung für Kraftmessungen an einem Auflager eines Wägeobjektes
DE3500891C1 (de) * 1985-01-12 1986-06-26 Krupp Mak Maschinenbau Gmbh, 2300 Kiel Meßelement zur Ermittlung von Belastungen mit Hilfe von Schubspannungen

Also Published As

Publication number Publication date
EP0919257A2 (fr) 1999-06-02
DE59812407D1 (de) 2005-01-27
DE19745923A1 (de) 1999-04-22
EP0919257A3 (fr) 2000-10-11
ATE285273T1 (de) 2005-01-15

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