EP1740435B1 - Hülsenpuffer - Google Patents

Hülsenpuffer Download PDF

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Publication number
EP1740435B1
EP1740435B1 EP04729619A EP04729619A EP1740435B1 EP 1740435 B1 EP1740435 B1 EP 1740435B1 EP 04729619 A EP04729619 A EP 04729619A EP 04729619 A EP04729619 A EP 04729619A EP 1740435 B1 EP1740435 B1 EP 1740435B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
buffer
plunger
sections
fact
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
EP04729619A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1740435A1 (de
Inventor
Sieghard Schneider
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to SI200430792T priority Critical patent/SI1740435T1/sl
Priority to PL04729619T priority patent/PL1740435T3/pl
Priority to CZ2006-689A priority patent/CZ307186B6/cs
Publication of EP1740435A1 publication Critical patent/EP1740435A1/de
Application granted granted Critical
Publication of EP1740435B1 publication Critical patent/EP1740435B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G11/00—Buffers
    • B61G11/16—Buffers absorbing shocks by permanent deformation of buffer element

Definitions

  • the invention relates to a sleeve buffer according to the preamble of claim 1.
  • a sleeve buffer is from the FR 2 789 358 A known.
  • Known sleeve buffers are used in locomotives, freight cars or passenger coaches as so-called side buffers to absorb and dampen impacts in the vehicle longitudinal direction. In the case of oblique or eccentric shocks additional lateral forces can occur on the sleeve buffers in the vehicle transverse direction and / or in the vertical direction.
  • Structurally known sleeve buffer consist of a buffer housing and an internal power transmission member, usually the element with spring and / or damping properties. The housing takes over the guidance in the longitudinal direction and the support of Transverse forces, while the internal spring and / or damping elements transmit the forces in the longitudinal direction.
  • all tube buffer designs attempt to maximize the overlap length between the fixed (sleeve) and moving part (plunger) to better support shear forces.
  • a large overlap length reduces the frictional forces and wear between the guide members (sleeve and plunger) and reduces the risk of jamming or jamming of the guide members.
  • the overlap length should be significantly greater than the diameter of the cylindrical guide surfaces to avoid canting and self-locking sleeve and plunger. Usually it is one Multiple of the buffer stroke.
  • the maximum possible overlap length can take on at most a value resulting from the total length of the sleeve buffer minus the thickness of the buffer plate, the thickness of the housing bottom and the double buffer stroke. At this maximum overlap length a clearance of both the plunger and the sleeve is guaranteed.
  • sleeve buffers typically have a length of about 620 to 650 mm and a buffer stroke - this corresponds to the spring travel of the spring element - in the range of 100 to 110 mm, as this is standardized for certain vehicle categories in European directives (eg UIC leaflets 526, 528) ,
  • the outer diameter of ram and sleeve are typically between about mounting flange and buffer plate in the range of 200 to 250 mm.
  • the overlap length is usually in the range 250 to 350 mm.
  • the guide parts (sleeve and plunger) of known sleeve bumps encounter defined stops.
  • the energy absorption capacity of the pod buffers exceed the sleeve buffer stops and transmits as a result very high peak forces on the rigid vehicle structure. There are often significant damage to the vehicle structure.
  • This design also allows relatively large displacement paths beyond the normal buffer stroke, but unlike DE 747 330 , without requiring additional space within the vehicle structure.
  • the disadvantage is that the overlap length must be reduced precisely to the extent that the displacement increases beyond the normal buffer stroke. If large displacement paths are to be realized, the overlap length must be reduced to a very low level.
  • the overlap length can reach very small dimensions, which are significantly smaller than the diameter of the sleeve and plunger, whereby the risk of jamming and tilting is great. For the practical application of this principle one is forced to make a compromise between Shift path length and overlap length to enter.
  • a sleeve buffer for movable support structures of rail vehicles with first and second guide parts in the form of a sleeve and a plunger known.
  • the sleeve is fixed to the support structure fastened and the plunger is displaceable relative to the sleeve in the vehicle longitudinal direction and is guided during its displacement movement of the sleeve.
  • the known sleeve buffer has a force transfer member for yieldingly coupling the plunger to the support structure.
  • At least one of the two guide parts consists of two or more, successively arranged elongated sections, which are connected in the region of their adjacent end faces by one or more predetermined breaking connections and have different cross-sectional dimensions, such that when exceeding a certain impact force (release force) on the sleeve buffer the predetermined breaking connection (s) tearing off or tearing off and the elongated sections telescope into one another.
  • the outer guide part consists of successively arranged elongated sections.
  • the object of the invention is to achieve in a sleeve buffer of the type mentioned both a large shortening length for the controlled deformation of the buffer housing in case of overload and at the same time to maintain a sufficiently large overlap length in normal operation (deflection to buffer stroke).
  • FIGS. 1 to 4 illustrated embodiments of a sleeve buffer 1 according to the invention each comprise two coaxial arranged guide parts, of which the one guide part a fixed sleeve 10 ( Figures 1 and 2 ) or 50 ( FIGS. 3 and 4 ) and the other guide part is an axially movable plunger 20.
  • the two guide parts in particular in the region of their sliding surfaces, cylindrical, tubular shape. The description of the embodiment is therefore limited to this construction below.
  • the tubular sleeve 10 is closed at its right axial end with a mounting flange 11 (buffer bottom), which is attached to a support structure 2 of a rail vehicle, not shown, for example, is screwed.
  • the mounting flange 11 carries the sleeve 10 and is preferably integrally connected to one end face of the sleeve 10, for example, welded.
  • the movable plunger 20 consists of a buffer plate 21 and a tubular portion 22, which in the example shown Beisp on the inner wall is slidable.
  • the inner wall of the sleeve 10 takes on the executives to slide the plunger 20 in the radial direction.
  • the structure of the sleeve buffer 1 according to the invention corresponds to the structure of known sleeve buffer, ie, it has seen from the outside the shape and dimensions of a known sleeve buffer.
  • an extension sleeve 24 whose diameter is smaller than the diameter of the tubular portion 22, is coaxially fixed.
  • the attachment of the extension sleeve 24 is effected by means of a predetermined breaking connection 23 which connects the outer surface of the extension sleeve 24 with the inner surface of the tubular portion 22 in the region of its free axial end non-positively and positively.
  • the predetermined breaking connection 23 can be designed, for example, in the form of shear bolts or sectional weld beads.
  • the extension bushing 24 is closed at its one end connected to the tubular portion 22 by a front plate 24c and has at its opposite end side a collar 24d, which is supported against the inner surface of the sleeve 10.
  • a force transmission member 30 in the form of a spring and / or damping element 30a is disposed inside the extension sleeve 24, which is supported between the end plate 24c of the extension sleeve 24 and the mounting flange 11 of the plunger 10.
  • the force transmitting member 30 is formed so that it can shorten to the maximum buffer stroke of the plunger 20 in its normal operation, when the collar 24d of the extension sleeve 24 abuts against the mounting flange 11 of the plunger 10 and the predetermined breaking connection 23 remains intact.
  • a power transmission member 40 is arranged in the form of a spring and / or damping element 40a, which is supported between the buffer plate 21 and the mounting flange 11 of the plunger 10.
  • the force transmitting member 40 is formed so that it can shorten beyond the maximum buffer stroke of the plunger 20 addition, if in the case of a controlled deformation of the sleeve 10 (FIG. Fig.
  • Fig. 2 ruptures the predetermined breaking connection 23 when a maximum load is exceeded or when a maximum displacement path of the plunger 20 is reached.
  • the rupture of the predetermined breaking connection 23 means that the extension sleeve 24 can slide telescopically into the interior of the tubular portion 22 of the plunger 20.
  • the further displacement movement of the buffer plate 21 and the tubular portion 22 of the plunger 20 is due to the deformation of the sleeve 10 and - in the case of the alternative according to the lower half of Fig. 1 - Additionally attenuated by the power transmission member 40.
  • the sleeve 10 is shortened in its axial length, so that the tubular portion 22 of the plunger 20 can move virtually with its right front end to the inner surface of the mounting flange 11.
  • the extension sleeve 24 has completely pushed into the tubular portion 22, wherein the front end of the tubular portion 22 abuts against the collar 24d of the extension sleeve 24.
  • This final state is in Fig. 2 illustrated.
  • the invention provides the ability to shorten both guide parts 10, 20 and nevertheless to keep the deformation force at a controllable level.
  • both tubular guide parts 10, 20 deforming together would create a very high, inefficient level of force due to the large common wall thickness and mutual interference during deformation.
  • the functions of shortening and deformation are separated and individually assigned to the two guide members 10, 20.
  • One of the two guide parts 10 and 20 should perform a low-resistance or resistance-free shortening, which takes up little space, while the other guide member 20 and 10 should shorten under deformation in order to achieve the desired level of force during the displacement.
  • the outside of the two guide parts 10, 20 deform outward, since there is sufficient space available.
  • the inner guide part of the two guide parts 10, 20 must perform a shortening in this case, which on the one hand does not hinder the deformation of the outer guide member and on the other hand generates as little resistance as possible in order not to allow the total deformation force to rise excessively. It is important that the length of the inner guide member is not reduced in the ground state, because this would be at the expense of overlap length.
  • the sliding surface between the plunger and sleeve is divided into three sections (length dimensions L 6 , L 3 and L 7 ), of which the first section L 6 and the third section L 7 are functionally necessary as sliding surfaces to the guide function in normal operation with the to achieve the desired overlap length.
  • the sections L 6 and L 7 In order not to let the surface pressures under transverse load in normal operation be too large, the sections L 6 and L 7 must not fall below a certain minimum length.
  • the middle section L 3 is reduced in diameter and no longer serves as a sliding surface, but still has to establish the mechanically rigid connection between the first section L 6 and the third section L 7 in order to fulfill the overall guiding function.
  • this central portion L 3 is reduced to the extent required to be pushed into the inner diameter of the tubular first portion L 6 in this, a relatively large, but low-resistance shortening of the inner guide member is achieved.
  • the second and third sections L 3 and L 7 like a telescope, can be pushed into the interior of the first section L 6 as well as into the adjoining section L 2 .
  • the two mutually displaceable sections are rigidly coupled in normal operation and bending moments between the first section L 6 and the third. Section L 7 can be transmitted reliably.
  • the connection between the first portion L 6 (tubular portion 22) and the second portion L 7 (extension sleeve 24) is made by the predetermined breaking connection 23, which separates the hitherto rigid connection upon the occurrence of an overload condition.
  • This can eg by shear bolts or other Abr furnishedglieder, but also by locally weakened connecting webs respectively.
  • the predetermined breaking connection 23 can either be distributed continuously along the circumference of the extension bushing 24 or consist of uniformly or unevenly distributed discrete individual elements. An uneven distribution may be useful, for example, to increase the stability under transverse load in a particular preferred direction, without affecting the release force in longitudinal load.
  • the principle of the telescoping sections 22, 24 of the inner guide part is with different deformation patterns the outer guide part can be combined, both with a widening and spreading of a tube and with, for example, a regular or irregular compression or folding of a tube, as in Fig. 2 is indicated by the reference numeral 40a and 40b.
  • the illustrated principle is applicable both to a design of the sleeve buffer with an internal plunger 20 as well as a design of the sleeve buffer with internal sleeve 10. Such a design is easily imagined by intellectual interchange of buffer plate 21 and mounting flange 11.
  • the principle of the telescopically movable sections of guide parts of the sleeve buffer can in extension of the embodiment according to Figures 1 and 2 additionally be applied to the sleeve 10.
  • This extension of the principle is based on the FIGS. 3 and 4 explained in which the sleeve in contrast to the Figures 1 and 2 instead of the reference numeral 10 is now provided with the reference numeral 50.
  • the formation of the plunger 20 in the embodiment according to FIGS. 3 and 4 is identical to the training in the first embodiment according to Figures 1 and 2 , However, the formation of the sleeve 50 is unlike Figures 1 and 2 in two parts in the form of telescopically movable sections 52, 54 running with intermediate predetermined breaking connection 53. As in Fig.
  • plunger 20 and sleeve 50 shorten telescopically. This shortening can take place under a certain desired resistance, eg by the in Fig. 3 shown components of the predetermined breaking connections 24, 54 or by other resistance elements between the telescopically displacing components.
  • an additional deformation element 60 between the extension sleeve 24 or its end plate 24c and the buffer plunger 21 are arranged. The deformation element 60 may be formed so that the required level of force during the mutual displacement movement of the components 22, 24 and 52, 54 is achieved.
  • the additional deformation element 60 can be arranged in the form of two separate deformation bodies 60a and 60b between the buffer plate 21 and the section 52 of the sleeve 50 (deformation element 60a) and between the section 22 of the plunger 20 and the collar 24d of the extension bushing 24.
  • Fig. 4 is the sleeve buffer after Fig. 3 shown in the state of maximum displacement. It can be seen that at the same time a telescopic displacement of plunger 20 and sleeve 50 and possibly a deformation of the deformation element 60 and the deformation body 60a, 60b has occurred.
  • a telescopic displacement of plunger 20 and sleeve 50 and possibly a deformation of the deformation element 60 and the deformation body 60a, 60b has occurred.
  • such an embodiment of the sleeve buffer according to the invention is relatively expensive, but such an embodiment may be useful if the surrounding space is very limited.
  • the simpler embodiment according to Figures 1 and 2 be considered, in which only the tubular portion 22 of the plunger 20 is formed telescopically displaceable and is surrounded by the sleeve 10.
  • the illustrated principle of the telescopic displacement can be applied mutatis mutandis to more than two telescoping sections. Such a design may be useful if an even greater total shortening of the sleeve buffer to be achieved and the corresponding space required in the circumferential direction of the sleeve buffer is given. It is understood that between each two of the several sections each one To provide predetermined breaking connection.
  • the function of the displacement can be carried out with little resistance or without resistance. This allows the structure of the desired level of force during displacement alone and undisturbed by the outer guide member by controlled deformation. Due to the clear separation of the functions and their low mutual influence, the design and controllability of the overall system is much easier compared to constructions in which both guide parts 10, 20 are subject to both deformation processes and interactions.
  • the design can be further simplified by the breaking off / triggering of the predetermined breaking connection 23 between the first section L 6 and the second section L 3 takes place at the stop of the inner guide part first and only shortly after the stop and the incipient deformation of the outer guide member.
  • the tripping force threshold and the average force level can be separated during the controlled deformation interpret and modify each other.
  • the described housing properties can be combined with various arrangements of buffer springs.
  • the existing of the second section L 3 and the third section L 7 extension sleeve 24 of the inner guide member may be provided with a support in the form of the end plate 24c for the spring and / or damping element 30a.
  • This can be achieved together with the triggering / tearing of the predetermined breaking connection 23 and a shutdown of the spring action of the spring and / or damping element 30a in order to avoid an increase in force with increasing displacement path.
  • the predetermined breaking connection 23 in addition to transmit the forces occurring during normal operation of the spring and / or damping element 30a and must be sufficiently dimensioned for this.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Valve Device For Special Equipments (AREA)
  • Lubricants (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Farming Of Fish And Shellfish (AREA)
EP04729619A 2004-04-27 2004-04-27 Hülsenpuffer Expired - Lifetime EP1740435B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI200430792T SI1740435T1 (sl) 2004-04-27 2004-04-27 Tulast odbojnik
PL04729619T PL1740435T3 (pl) 2004-04-27 2004-04-27 Zderzak tulejowy
CZ2006-689A CZ307186B6 (cs) 2004-04-27 2004-04-27 Trubkový nárazník

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/004439 WO2005115818A1 (de) 2004-04-27 2004-04-27 Hülsenpuffer

Publications (2)

Publication Number Publication Date
EP1740435A1 EP1740435A1 (de) 2007-01-10
EP1740435B1 true EP1740435B1 (de) 2008-04-23

Family

ID=34957580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04729619A Expired - Lifetime EP1740435B1 (de) 2004-04-27 2004-04-27 Hülsenpuffer

Country Status (8)

Country Link
EP (1) EP1740435B1 (es)
AT (1) ATE393073T1 (es)
DE (1) DE502004006968D1 (es)
ES (1) ES2305766T3 (es)
PL (1) PL1740435T3 (es)
SI (1) SI1740435T1 (es)
SK (1) SK287991B6 (es)
WO (1) WO2005115818A1 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018130253A1 (de) 2018-07-11 2020-01-16 Falk Schneider Crashpuffer mit führungsstange, tragstruktur und schienenfahrzeug
EP3771610B1 (de) * 2019-07-29 2024-01-24 Falk Schneider Hülsenpuffer mit mechanischem widerstrand bei teleskopierbewegung

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2687416B1 (de) * 2012-07-16 2014-09-03 Voith Patent GmbH Stoßsicherung, insbesondere in Gestalt eines Crashpuffers
JP6247471B2 (ja) * 2013-07-31 2017-12-13 川崎重工業株式会社 鉄道車両用衝突エネルギー吸収装置および鉄道車両
PL3372472T3 (pl) * 2017-03-06 2022-08-16 Dellner Couplers Ab Urządzenie rozpraszające energię odpowiednie do stosowania jako część urządzenia łączącego, które łączy pierwszy wagon pojazdu wielowagonowego z drugim wagonem pojazdu wielowagonowego, i sposób rozpraszania energii w urządzeniu łączącym
EP3594082B1 (de) 2018-07-11 2020-12-30 Falk Schneider Crashpuffer mit führungsstange, tragstruktur und schienenfahrzeug
EP3771609B1 (de) 2019-07-29 2022-05-18 Falk Schneider Hülsenpuffer mit abschnittsweise ummanteltem stössel
ES2946081T3 (es) * 2019-07-29 2023-07-12 Falk Schneider Tope de manguito con marca

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19616944B4 (de) * 1996-04-27 2006-05-18 Suspa Holding Gmbh Aufpralldämpfer
FR2777251B1 (fr) * 1998-04-14 2000-12-22 Nantes Ecole Centrale Dispositif absorbeur de chocs pour tampon amortisseur de vehicules ferroviaires ou autres
FR2789358B1 (fr) * 1999-02-10 2004-02-27 Nantes Ecole Centrale Dispositif absorbeur de chocs pour un nouveau tampon ferroviaire
DE10037050C2 (de) * 2000-07-29 2002-10-31 Sieghard Schneider Hülsenpuffer
GB0108413D0 (en) * 2001-04-04 2001-05-23 Oleo Internat Ltd A two stage buffer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018130253A1 (de) 2018-07-11 2020-01-16 Falk Schneider Crashpuffer mit führungsstange, tragstruktur und schienenfahrzeug
EP3771610B1 (de) * 2019-07-29 2024-01-24 Falk Schneider Hülsenpuffer mit mechanischem widerstrand bei teleskopierbewegung

Also Published As

Publication number Publication date
EP1740435A1 (de) 2007-01-10
SK287991B6 (sk) 2012-09-03
ATE393073T1 (de) 2008-05-15
DE502004006968D1 (de) 2008-06-05
SK51012006A3 (sk) 2007-05-03
WO2005115818A1 (de) 2005-12-08
PL1740435T3 (pl) 2008-09-30
SI1740435T1 (sl) 2008-10-31
ES2305766T3 (es) 2008-11-01

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