EP4112416B1 - Dispositif d'accouplement pourvu de blocs-ressorts monobloc - Google Patents

Dispositif d'accouplement pourvu de blocs-ressorts monobloc Download PDF

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Publication number
EP4112416B1
EP4112416B1 EP21182843.9A EP21182843A EP4112416B1 EP 4112416 B1 EP4112416 B1 EP 4112416B1 EP 21182843 A EP21182843 A EP 21182843A EP 4112416 B1 EP4112416 B1 EP 4112416B1
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EP
European Patent Office
Prior art keywords
coupling rod
spring
coupling device
piece
spring assembly
Prior art date
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Active
Application number
EP21182843.9A
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German (de)
English (en)
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EP4112416A1 (fr
Inventor
Peter Jonathan Pieringer
Wolf Dieter Jussel
Christoph Scala
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Individual
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Individual
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Priority to HRP20231094TT priority Critical patent/HRP20231094T1/hr
Priority to HUE21182843A priority patent/HUE062948T2/hu
Priority to SI202130063T priority patent/SI4112416T1/sl
Priority to PT211828439T priority patent/PT4112416T/pt
Priority to PL21182843.9T priority patent/PL4112416T3/pl
Application filed by Individual filed Critical Individual
Priority to EP21182843.9A priority patent/EP4112416B1/fr
Priority to PCT/EP2022/067904 priority patent/WO2023275147A1/fr
Publication of EP4112416A1 publication Critical patent/EP4112416A1/fr
Application granted granted Critical
Publication of EP4112416B1 publication Critical patent/EP4112416B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G9/00—Draw-gear
    • B61G9/04—Draw-gear combined with buffing appliances
    • B61G9/06—Draw-gear combined with buffing appliances with rubber springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G9/00—Draw-gear
    • B61G9/04—Draw-gear combined with buffing appliances

Definitions

  • the invention relates to a coupling device for connecting wagon elements of a freight wagon, comprising a coupling rod and two directional joints arranged at the ends of the coupling rod for connecting the coupling rod to one wagon element each, with at least one of the directional joints comprising a force transmission body and a first and a second damping element which are arranged on both sides of the power transmission body.
  • the directional joints are usually composed of a large number of individual components.
  • EP 1 247 715 A1 is known, for example, to mount a bolt on one end of a coupling rod, then to push a large number of spring part elements, each comprising two metal discs and a plastic located in between, loosely one behind the other on the bolt, which are intended to absorb compressive forces.
  • spring part elements each comprising two metal discs and a plastic located in between, loosely one behind the other on the bolt, which are intended to absorb compressive forces.
  • a sleeve and a power transmission body for connection to the carriage element are placed on the bolt.
  • several spring part elements are pushed loosely one behind the other onto the bolt behind the force transmission body.
  • a coupling device for connecting wagon elements of a freight wagon comprising a coupling rod and two directional joints arranged at the ends of the coupling rod for connecting the coupling rod to one wagon element each, with at least one of the directional joints comprising a force transmission body and a first and a second damping element.
  • the coupling rod has at each end an end section with a smaller diameter than a central area of the coupling rod and on the end sections only the following elements in the following order, seen from the central area of the coupling rod, are pushed on: a first spring contact disc, the first damping element designed as a one-piece spring element, the force transmission body, the second damping element designed as a one-piece spring element, a second spring contact disc, a threaded sleeve which is locked on a thread on the end of the end section facing away from the central area of the coupling rod, wherein all the components of the first and second one-piece spring element are inextricably connected to one another, and the first and second one-piece spring element has at least two metal discs and an elastomeric plastic material glued or vulcanized on between them.
  • the invention it is provided not to provide separate metal disks and separate plastic rings, but to permanently connect at least two metal disks with elastomeric plastic glued or vulcanized on between them. Since all elements of the damping element are inseparably connected to one another, one-piece spring assemblies result, which can be prefabricated and, in particular, can be handled as a unit during maintenance. There can be no errors in the maintenance of the coupling rod, since the one-piece spring assembly is designed ready for a predetermined maximum compressive force or predetermined maximum tensile force and it cannot happen that too many or too few plastic rings with possibly different mechanical properties are incorrectly combined with one another.
  • a further problem that cannot occur with the coupling device according to the invention is that a single plastic ring cants or is pushed on at a slight angle in relation to a metal ring, as a result of which the mechanical pressure properties of the resulting damping element could suffer.
  • the outermost elements of the one-piece spring packs are also the metal washers and not the plastic, as this prevents misalignment with adjacent elements such as a spring washer or the power transmission body.
  • each of the directional joints consists of only six individual parts: two one-piece spring assemblies, two spring contact disks, the power transmission body and the threaded sleeve. Individual elements can thus be exchanged in a targeted manner without having to remove too many components from the coupling device. As a rule, there are no other components on the end sections of the coupling rod.
  • the first set of springs and the second set of springs are of identical design. It is usually provided that the first spring assembly is dimensioned differently than the second spring assembly, since the first spring assembly is dimensioned for a predetermined maximum compressive force (eg 2000 kN) and the second spring assembly for a predetermined maximum tensile force (eg 1500 kN).
  • a predetermined maximum compressive force eg 2000 kN
  • the second spring assembly for a predetermined maximum tensile force (eg 1500 kN).
  • the number of components is to be reduced, in this preferred embodiment it can be provided that the number of component types is also reduced, in that both one-piece spring assemblies are of identical design.
  • both one-piece spring assemblies are dimensioned to the higher of the two requirements, ie to the predetermined maximum compressive force or the predetermined maximum tensile force, respectively depending on which is larger. This prevents the first one-piece spring assembly from being unintentionally mixed up with the second one-piece spring assembly during maintenance, which could have dramatic consequences, since in this case one of the one-piece spring assemblies would be undersized.
  • the first one-piece spring element and/or the second one-piece spring element has at least three metal discs and an elastomeric plastic glued or vulcanized on between them, metal discs and plastic being arranged alternately.
  • each metal disc is followed by a plastic ring, with metal discs being present on the outside.
  • the first one-piece spring element and/or the second one-piece spring element can also have at least two spring part elements welded to one another, which each have two metal discs and an elastomeric plastic glued or vulcanized on between them.
  • the first and/or second one-piece spring element can also consist of only two metal disks, between which an elastomeric plastic ring is glued or vulcanized. Compared to simple plastic rings, this has the advantage that the metal discs slow down the wear of the plastic ring and bring about a better connection to adjacent elements, which can prevent, for example, a skewed position or tilting on the power transmission body. This embodiment is particularly compact, since a small length of the end section is made possible.
  • the coupling device comprises a replacement spring pack with at least two metal discs between which an elastomeric plastic is glued or vulcanized in such a way that the metal discs and the plastic located between the metal discs form a one-piece spring pack.
  • the replacement spring assembly can, for example, be delivered together with the clutch device or sold separately, so that the one-piece spring assemblies of the clutch device according to the invention can be serviced particularly quickly.
  • At least one of the plastics of the first or second spring assembly that is glued or vulcanized on between the metal disks has a color code has, which is representative of a mechanical property, in particular a maximum tensile force or maximum compressive force of the entire spring assembly. This means that it can be seen at a glance for which maximum tensile force or maximum compressive force the one-piece spring assembly is designed. This benefit cannot be achieved with loosely strung plastic rings separated by metal washers, as individual plastic rings could be swapped out or removed, changing the maximum tensile or compressive force of the spring pack, making color-coding pointless. Color coding further reduces the risk of incorrectly fitting one-piece spring packs onto the coupling device, thereby improving serviceability.
  • the replacement spring assembly is designed differently than the first or the second spring assembly and has at least one different mechanical property, with the replacement spring assembly and the named first or the second spring assembly having a different color coding, which are respectively are representative of said mechanical property.
  • the replacement spring pack can thus be used to increase the desired maximum tensile force or maximum compressive force, which can be carried out by the end user himself in a workshop due to the simple maintainability of the coupling device according to the invention.
  • the elastomeric plastic of the first and/or second one-piece spring assembly is a vulcanized natural rubber or vulcanized synthetic rubber such as silicone rubber.
  • a vulcanized natural rubber or vulcanized synthetic rubber such as silicone rubber.
  • the metal disks particularly preferably have an inside diameter that is larger than an inside diameter of the plastic glued or vulcanized on between the metal disks.
  • the spring contact washers, the one-piece spring assemblies and the power transmission body are usually included first a pressure against a vertical side surface existing between the end portions and the central area of the connecting rod. This is usually done with a separate tool. Once the desired pressure is present, the threaded sleeve is screwed onto the coupling rod until said components are clamped between said side surface and the threaded sleeve with the predetermined axial preload.
  • At least one of the outer metal disks of the first and/or second one-piece spring assembly has at least one axially outwardly protruding pin which engages in a corresponding hole in the force transmission body or in a corresponding hole in the first or second spring washer.
  • these pins can also be omitted, especially if both the one-piece spring assembly and the force-transmitting body rest on the coupling rod with a plastic (e.g. by means of O-rings or a ball joint for the force-transmitting plate). Due to the high coefficient of friction of the plastic, the elements will generally not slip or twist axially.
  • the coupling rod is designed in one piece at the transition from the end sections to the central area, i.e. no separate bolt is inserted into the coupling rod. This further reduces the number of individual components required for the coupling device.
  • figure 1 shows a coupling device 1 for connecting wagon elements of a freight wagon with a coupling rod 2 and two directional joints 3.
  • the coupling rod 2 is, for example, 2000 mm to 3000 mm long, preferably 2500 mm to 2700 mm long, and can be designed as a solid component or at least partially tubular.
  • the directional joints 3 are arranged at the ends of the coupling rod 2 , ie one of the directional joints 3 is arranged in a region of each end 4 of the coupling rod 2 .
  • the directional joints 3 are used to connect the coupling rod 2 to a carriage element, which is not visible in the figures.
  • the directional joints 3 can, for example, be connected to the carriage elements via a swivel joint, not shown in the figures, in order to ensure the necessary mobility of the connection.
  • Other options for connecting the coupling rod 2 to a carriage element are generally known to those skilled in the art.
  • Each of the directional joints 3 comprises at least one essentially planar force transmission body 5. Furthermore, the directional joints 3 each comprise two one-piece spring assemblies 6, 7, explained in more detail below, two spring contact washers 8, 9 and a threaded sleeve 10. Usually, the directional joints 3 shown here only comprise these components and no other components such as pushed-on separating sleeves or the like.
  • the power transmission body 5 is at a substantially right angle to and aligned with an in figure 1 visible coupling rod axis A of the coupling rod 2 and for this purpose has an inner recess 11 running parallel to the coupling rod axis A.
  • the inner recess is the same size as or larger than the diameter of the coupling rod 2 at the point at which the force transmission body 5 is to be mounted, ie on the end section 22 (explained in more detail below). figure 7 and 10 ).
  • the power transmission body 5 is essentially flat, ie it has a longitudinal side L that runs parallel to the axis A of the coupling rod and is shorter than that Transverse sides Q of the power transmission body 5, which are normal to the axis A of the coupling rod.
  • the force transmission body 5 can be tilted by a certain angular range from the specified right angle to the coupling rod axis A when a torque is exerted on the force transmission body 5, for example by a wagon element of the freight wagon that is connected to the force transmission body 5.
  • the power transmission body 5 is mounted on the coupling rod 2 by means of two O-rings 12, as shown in FIG figure 7 is evident.
  • the O-rings 12 are shown spaced apart axially and are arranged in the inner recess 11 of the force transmission body 5, which can have, for example, two grooves 13 in order to receive the O-rings 12 and thereby hold them in position.
  • a ball joint can be provided, which can either be integrated in the force transmission body 5 or provided in a separate component, which in turn is introduced into the force transmission body 5.
  • the force transmission body 5 has fastening holes 14 on at least two opposite transverse sides Q of the force transmission body 5, i.e. the force transmission body 5 has four transverse sides Q each running normal to the coupling rod axis A, with the fastening holes 14 along at least two opposite four transverse sides are arranged.
  • the drilling axis of the fastening holes 14 runs parallel to the coupling rod axis A.
  • FIG. 2 shows a plan view of the power transmission body 5 along the axis A of the coupling rod. This enables a resilient and long-lasting connection between the car elements, which at the same time has a high level of operational safety.
  • the mounting holes 14 could be located along all four transverse sides Q.
  • the power transmission body 5 has a reduced thickness 15 in the area of the fastening holes 14, ie those transverse sides Q of the Power transmission body 5 on which the mounting holes 14 are provided are thinner than the center of the power transmission body 5 on which the inner recess 11 is located.
  • the force transmission body 5 could also be designed with a uniform thickness.
  • the power transmission body 5 has, for example, a first surface 16 arranged essentially at a right angle to the coupling rod axis 6 and a second surface 17 opposite the first surface 16 .
  • the first surface 16 can be flat throughout, and the second surface 17 has a depression 18 running along the transverse side Q in the region of the two opposite transverse sides Q of the force transmission body 5, on which the fastening holes 14 are arranged.
  • the recess 18 is shown in detail in figure 3 visible, which shows one of the directional joints 3 in a larger representation.
  • the indentation 18 can be designed, for example, as a milling on the transverse sides Q on the second surface 17 .
  • the second surface 17 of the force transmission body 5 is preferably arranged facing away from a central area Z of the coupling rod 2 . This is also in Figure 1 and Figure 3 apparent.
  • the fastening holes 14 are preferably designed as through holes in the force transmission body 5 .
  • the fastening holes 14 are preferably arranged in a row along the opposite sides Q of the power transmission body 5 . This achieves a uniform force distribution in the force transmission body 5 .
  • Four fastening holes 14 are particularly preferably provided on the two opposite transverse sides Q.
  • the fastening holes 14 can have a diameter of 20 mm to 30 mm, preferably 24 mm to 28 mm, particularly preferably essentially 26 mm.
  • the fastening holes 14 in said row can each have a spacing of 64 mm, measured from the center to the center of the fastening holes 14.
  • the two rows can in turn be at a normal distance of about 260 mm.
  • Exemplary dimensions for the transverse sides Q are 314 mm x 266 mm, with the rows being along the shorter transverse sides Q.
  • the force transmission body can have a maximum thickness of 60 mm, for example, with the reduced thickness being able to be 50 mm.
  • the length of the indentation 18 in the direction of the opposite depression 18 can be, for example, 40 to 50 mm, preferably 55 mm, and have an additional rounding that lengthens the depression 18 .
  • the Figures 4 and 5 show the one-piece spring assemblies 6, 7, which are used as damping elements.
  • the spring assemblies 6, 7 each have a plurality of metal discs 19, which are connected by an elastomeric plastic 20, which can be, for example, vulcanized natural rubber or vulcanized synthetic rubber such as silicone rubber.
  • the elastomeric plastic 20 can either be prefabricated as a ring and glued to the metal disks 19 in order to produce the one-piece spring assemblies 6, 7, or the elastomeric plastic 20 can be vulcanized directly onto the metal disks 19. In the finished state, the elastomeric plastic 20 thus adheres to the metal discs 19, so that the one-piece spring assemblies 6, 7 are compact, prefabricated components.
  • the one-piece spring packs 6, 7 each have a metal disc 19 and no plastic, which facilitates installation in the coupling device 1. Essentially any number of metal discs 19 can be provided inside the one-piece spring assemblies 6 , 7 . Overall, the one-piece spring assemblies 6, 7 have, for example, at least two, at least three, at least four, at least five or at least six metal disks 19, each of which is separated by an elastomeric plastic 20.
  • the metal discs 19 of the spring assemblies 6, 7 facing the force transmission body 5 can be provided with outwardly projecting pins 21.
  • the power transmission body 5 has additional, diametrically opposed holes (not shown).
  • the pins 21 can thus protrude into the force transmission body 5 in order to prevent relative rotation of the spring assemblies 6 , 7 with respect to the force transmission body 5 .
  • the power transmission body 5 could also have pins that protrude in the direction of the spring assemblies 6, 7 and engage in holes in the spring assemblies 6, 7.
  • a rotation of the spring packs 6, 7 can be prevented if the elastomeric plastic 20 of the spring packs 6, 7 comes to rest directly on the coupling rod 2.
  • the elastomeric plastic 20 can have an inside diameter d1 that is smaller than an inside diameter d2 of the metal disks 19.
  • This is for example figure 6 visible, in which a one-piece spring assembly 6, 7 is shown. Out of figure 6 it can also be seen that the elastomeric plastic 20 can have a chamfer where it comes into contact with the elastomeric plastic 20 . On the one hand, this favors the production of the spring assemblies 6, 7 and, on the other hand, the behavior of the spring assemblies 6, 7 under compressive and tensile loads.
  • FIG 7 shows the arrangement of the components of the directional joints 3 on the coupling rod 2 in detail.
  • the coupling rod 2 has an end section 22 at the end, on which the directional joint 3 is arranged.
  • the end section 22 has a smaller diameter than the central area Z.
  • the diameter of the central area Z is essentially 130 mm and the diameter in the end area is essentially 80 mm.
  • the coupling rod 2 is usually designed symmetrically, so that it has a first end section 22, a central area Z and a second end section 22 in the axial direction.
  • the length of the end sections 22 can be, for example, 600 to 900 mm, preferably essentially 740 mm.
  • the length of the central area Z can be 1000 to 1400 mm, for example, preferably essentially 1200 mm.
  • the diameter of the end area 22 is smaller than the diameter of the central area Z, there is a vertical side surface 23 at the transition from the end area 22 to the central area Z, on which the directional joint 3 can be supported under pressure.
  • this side surface 23 has an outside diameter which is generally smaller than the outside diameter of the metal disks 19, a spring contact disk 8 is provided in order to promote the force of the directional joint 3 in the coupling rod 2.
  • the spring contact disk 8 thus has an outside diameter on one side which essentially corresponds to the outside diameter of the coupling rod 2 in the central area Z and on the other side an outside diameter which essentially corresponds to the outside diameter of the outer metal disks 19 of the spring assemblies 6, 7.
  • the first spring contact washer 8 can have a uniform outer diameter, which can correspond to the outer diameter of the metal washers 19, for example.
  • a first spring washer 8 is first slid onto the end section 22, then the first spring assembly 6, the force transmission body 5 and the second spring assembly 7.
  • a second spring washer 9 is slid onto the end section 22 and fixed with the threaded sleeve 10 on the coupling rod 2.
  • the end section 22 has a thread on the end remote from the central region Z of the coupling rod 2, onto which the threaded sleeve 10 can be screwed.
  • the directional joint 3 without the threaded sleeve 10 is usually subjected to a compressive force before the threaded sleeve 10 is screwed on.
  • Said second spring contact disk 9 in turn has the purpose of promoting a force transmission from the threaded sleeve 10 to the second spring assembly 7 .
  • the second spring contact disk 9 thus has an outside diameter on one side which essentially corresponds to the outside diameter of the threaded sleeve 10 and on the other side an outside diameter which essentially corresponds to the outside diameter of the outer metal disks 19 of the spring assemblies 6 , 7 .
  • the first spring contact washer 8 can have a uniform outer diameter, which can correspond to the outer diameter of the metal washers 19, for example.
  • the two spring packs 6, 7 can be designed differently, for example with different types of elastomeric plastic 20 and/or with a different number of metal discs 19.
  • the first spring pack 6 can be subjected to a specific compressive load and the second spring pack 7 are dimensioned to a specific tensile load.
  • the two spring assemblies 6, 7 are preferably of the same design, ie they have the same number of similar metal discs 19 with elastomeric plastic 20 in between, the elastomeric plastic 20 of both spring assemblies 6, 7 having the same mechanical properties.
  • the elastomeric plastic 20 can also be provided with a corresponding color that can indicate a predetermined mechanical property of the entire spring assembly 6, 7. This allows the spring assemblies 6, 7 to be coded so that it can be determined at first glance which spring assembly 6, 7 corresponds to which maximum tensile load or compressive load. Of course, this only makes sense with one-piece spring assemblies 6, 7, since the elastomeric plastic 20 cannot be replaced and therefore a subsequent "recoding" of the spring assemblies 6, 7 could not occur if individual components of the spring assemblies 6, 7 are replaced.
  • the one-piece spring assembly is formed by providing at least two metal discs 19, each of which is spaced apart by a plastic 20 or plastic ring, i.e. metal discs 19 and plastic rings are provided alternately, which are permanently connected to one another by gluing or vulcanizing , whereby a metal disc 19 is always provided on the outside. There are no metal discs 19 next to each other without a plastic ring 20 in between.
  • individual spring part elements can be produced in advance and then welded together in order to produce the one-piece spring element 6, 7.
  • a spring sub-element consists of two metal discs 19 and a plastic 20, ie a plastic ring, which is glued on or vulcanized on between them.
  • the Figures 9, 10 and 11 show that the coupling rod 2 of the coupling device 1 does not have to be manufactured in one piece, but can be separated in the central area Z, ie the coupling rod 2 comprises a first coupling rod part T1 and a second coupling rod part T2.
  • the two coupling rod parts T1, T2 are preferably of the same length and particularly preferably of the same design, ie symmetrical, so that no confusion can occur during assembly.
  • coupling rod parts T1, T2 of different lengths or structurally different could also be used.
  • the aim is for the two carriage elements connected by the coupling device 1 to be able to be separated quickly, which is not easily possible at the connection points between the force transmission body 5 and carriage elements which are usually covered by other components.
  • Both coupling rod parts T1, T2 each have a first end, which also forms the respective end 4 of the coupling rod 3 and carries the respective directional joint 3.
  • the coupling rod parts T1, T2 each have a second end 24 opposite the first end 4 for connection to the respective other coupling rod part T1, T2.
  • the second ends 24 are usually located in the Central area Z of the coupling rod 2 and have end faces S1, S2, which are complementary to each other, for example each normal to the axis A of the coupling rod. If the two end faces are placed directly against one another, the coupling rod 2 is formed.
  • the coupling device 1 comprises an openable clip 25, which engages over the second ends 24 and connects them to one another in a form-fitting manner, as explained below.
  • the term openable is understood to mean that the clip 25 can assume at least two operating states. In the first operating state, the clip 25 is closed and connects the two coupling rod parts T1, T2. In the second operating state, the clip 25 is open and releases the coupling rod parts T1, T2 so that they can be separated from one another.
  • the second ends 24 of the coupling rod parts T1, T2 each have at least one circumferential groove 26 and/or a circumferential web (not shown).
  • a groove 26 is understood to mean a depression with respect to a diameter of the coupling rod 2 in the central area Z, which is spaced apart from the respective end face S1, S2, and a web is an elevation with respect to a diameter of the coupling rod 2 in the central area Z. Since a groove 26 passes through simple, local peripheral milling of the coupling rod 2 can be achieved, this embodiment is preferred over a web. However, the measures explained below with regard to the groove 26 could also be applied to a web.
  • the clamp 25 can have an inner profile which essentially corresponds to the outer profile of the two coupling rod parts T1, T2 placed one on top of the other at the second ends 24. If the clip 25 is placed over the two coupling rod parts T1, T2 and closed, the clip 25 engages in the grooves 26 in such a way that the coupling rod parts T1, T2 cannot detach from one another, i.e. cannot move in opposite directions with respect to the coupling rod axis A .
  • the clip 26 comprises, for example, two circumferential webs 27 which engage in the groove 26 of the first and second coupling rod parts T1, T2 and preferably rest against the side walls of the groove 26.
  • the clamp 25 can, but does not have to, as mentioned above, have an inner profile that is complementary to the coupling rod parts T1, T2.
  • the two coupling rod parts T1, T2 can each comprise not only one groove 26, but also two or more grooves 26, each in Direction of the coupling rod axis A are spaced apart. At least two grooves 26 are usually provided, since this promotes the power transmission from the two coupling rod parts T1, T2 via the clamp 25. With a single groove 26, the force transmission surface could be too small for the tensile forces that occur.
  • the clip 25 can be opened or closed, so that the two coupling rod parts T1, T2 can be separated from one another and connected to one another as desired.
  • the clamp 25 consists, for example, as illustrated, of two oppositely identical clamp halves 28. If the clamp halves 28 are assembled in order to close the clamp 25, they together have a cylindrical outer shape, for example, as illustrated. In the open state of the clamp 25, the clamp halves are usually loose. Alternatively, these could still be connected via a hinge in the open state.
  • each connecting hole 29 running normal to the coupling rod A, of which, in the closed state of the clamp 25, at least two are on the side of the first coupling rod part T1 and at least two on the side of the second coupling rod part T2 are arranged, each of the connecting holes 29 passing through both clamp halves 28.
  • Two of the connecting holes 29 are preferably located opposite one another at the same height as the axis A of the coupling rod. It goes without saying that each connecting hole 29 passes through both clamp halves 28 so that they can be connected.
  • bolts, screws or similar fasteners 30 can be pushed through the connecting holes 29 to close the clamp.
  • screws can be passed through the connecting holes 29 and locked in the connecting hole 29 by means of a nut.
  • connecting holes 29 have the particular advantage that the connecting elements 30 can be guided into the connecting holes 29 from a direction normal to the coupling rod axis A, which makes it much easier to close the clamp 25, since there is often not enough space between the wagon elements of the freight wagon to be connected. to insert connecting elements along the connecting rod axis A into the connecting holes 29.
  • Said connecting holes 29 can essentially be made at any desired distance from the coupling rod axis A, so that the connecting holes 29 for example, can also be arranged completely outside the diameter of the central area Z of the coupling rod 2.
  • the connecting holes 29 can also be arranged closer to the coupling rod axis A and can run at least partially through the grooves 26 in the closed state of the clamp 25, as is shown in figure 11 as can be seen, run at least partially within the diameter of the central region Z.
  • the end faces S1, S2 can each have an opposite blind hole for a centering pin 31. So that the centering pin 31 can be easily removed from the blind hole even after a long period of time, the centering pin 31 can have a continuous hole with an internal thread. As a result, a pin with the opposite thread can be inserted into the hole and convey the centering pin 31 out of the blind hole as soon as the pin is present at the bottom of the blind hole.
  • the coupling rod parts T1, T2 are each designed symmetrically in order to ensure mutual compatibility or interchangeability and thereby in particular to simplify maintenance.
  • the second end 24 of the first coupling rod part T1 is designed to be structurally identical to the second end 24 of the second coupling rod part T2.
  • the second ends 24 of the first and second coupling rod parts T1, T2 could also be designed asymmetrically, in which case, depending on the shape of the second ends 24, an asymmetrical clamp can also be used.
  • figure 12 shows that the possibility of connecting the coupling rod parts T1, T2 created by the clip 25 has the further advantage that the distance between the wagon elements of the freight wagon to be connected can also be increased.
  • an extension rod 32 can be provided which can be placed between the coupling rod parts T1, T2. So that the extension rod 32 can be connected to the coupling rod parts T1, T2, it has a first end that is identical in construction to the second end 24 of the first coupling rod part T1, and a second end that is identical in construction to the second end 24 of the second coupling rod part T2 is executed.
  • At least one further clamp 33 is provided here, with the two clamps 25, 33 each being designed to connect the second end 24 of the first coupling rod part T1 and the first end of the extension rod 32 and the second end 24 of the second coupling rod part T1 and the second end of the To connect extension rod 32 positively to each other, as explained above for the two second ends 24 of the coupling rod parts T1, T2.
  • the two second ends 24 of the coupling rod parts T1, T2 and the two ends of the extension rod 32 are particularly preferably designed in the same way, so that the two clamps 25, 33 can be constructed in the same way.
  • the extension rod 32 preferably has an outer diameter which essentially corresponds to the outer diameter of the coupling rod 2 in the central region Z.
  • the extension rod 32 can also have differently shaped ends, for which purpose separate clamps can be used in order to once again achieve a positive connection between the coupling rod parts T1, T2 and the extension rod 32.
  • the extension rod 32 has the purpose that the coupling device 1 can be quickly lengthened without the goods wagon having to be taken to a workshop in order to replace the entire coupling device 1 with a longer coupling device.
  • the clamps 25, 33 can be opened and closed more quickly than the connection between the force transmission body 5 and the respective carriage element, since this connection point is usually covered by other components.
  • connection through the clamps 25, 33 brings about a synergy effect, since the greater length brought about by the extension rod 32 also leads to greater bending moments.
  • these bending moments can be absorbed better by clamps 25, 33 than is possible, for example, with a flange connection, where bending moments are primarily absorbed by the screws in the flange.
  • the coupling device 1 described above is designed as described for connecting two car elements of a freight car.
  • the coupling device 1 can be designed, for example, for a maximum tensile force (maximum tensile force) of 1500 kN and a maximum compressive force (maximum compressive force) of 2000 kN, it being possible, of course, to deviate from these values.
  • maximum tensile force maximum tensile force
  • maximum compressive force maximum compressive force
  • both one-piece spring assemblies 6, 7 can be designed the same and thus designed for the higher of the maximum tensile force or maximum compressive force. So that it can be determined at first glance which one-piece spring assembly 6, 7 is designed for which mechanical load, as already mentioned above, at least one of the plastics can be provided with a color code that is representative of the respective mechanical load for which the respective one-piece spring assembly 6, 7 is designed.
  • the one-piece spring assembly 6 designed for the maximum compressive force of 2000 kN can be colored red and the one-piece spring assembly 7 designed for the maximum tensile force of 1500 kN can be colored green, with the invention of course not being restricted to specific colors.
  • the coupling device 1 described above can be designed for a maximum bending moment about the vehicle transverse axis of 3000 Nm and for a maximum bending moment about the vehicle vertical axis of 1500 Nm.
  • the selection of the diameter of the coupling rod and other dimensions can easily be determined by the person skilled in the art on the basis of these requirements.
  • the structure described above results in a coupling device 1 with a weight of 200 kg - 300 kg, e.g. 250 kg for typical requirements in rail freight transport.
  • Said clamp 25 usually has a weight of 30 kg - 40 kg, essentially 35 kg, whereby each clamp half 28 can weigh 17 kg, for example.
  • the invention described herein is not limited to the embodiment of the force transmission body 5 described above or to a multi-part coupling rod 2 .
  • the one-piece spring packs 6, 7 could also be used in coupling devices 1 in which the force transmission body 5 is designed differently and/or in which the coupling rod 2 is made in one piece or two coupling rod parts are connected by means of a flange.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Vibration Prevention Devices (AREA)

Claims (12)

  1. Dispositif d'accouplement (1) pour relier des éléments de wagon d'un wagon de marchandises, comprenant une barre d'attelage (2) et deux articulations (3) disposées aux extrémités de la barre d'attelage (2) pour relier chacune la barre d'attelage (2) avec un élément de wagon, au moins une des articulations (3) comportant un corps de transmission de force (5) ainsi qu'un premier et un deuxième élément d'amortissement qui sont disposés de part et d'autre du corps de transmission de force (5), caractérisé en ce que
    la barre d'attelage (2) présente à chacune des extrémités (4) une section terminale (22) dotée d'un diamètre plus petit que la zone centrale (Z) de la barre d'accouplage (2) et que les éléments suivants sont enfilés dans l'ordre suivant, vu depuis la zone centrale (Z) de la barre d'attelage (2), uniquement sur les sections terminales (22) :
    - une première rondelle de butée (8),
    - le premier élément d'amortissement configuré comme un élément de ressort monobloc (6),
    - le corps de transmission de force (5),
    - le deuxième élément d'amortissement configuré comme un élément de ressort monobloc (7),
    - une deuxième rondelle de butée (9),
    - un manchon fileté (10) qui est bloqué sur un filetage sur l'extrémité de la section terminale (22) opposée à la zone centrale (Z) de la barre d'attelage (2),
    tous les composants respectifs du premier et du deuxième élément de ressort monobloc (6, 7) étant reliés solidairement entre eux, et le premier et le deuxième élément de ressort monobloc (6, 7) comportant aux moins deux rondelles métalliques (19) et un plastique élastomère (20) collé ou vulcanisé entre celles-ci.
  2. Dispositif d'accouplement (1) selon la revendication 1, dans lequel le premier bloc-ressort (6) et le deuxième bloc-ressort (7) sont configurés de façon identique.
  3. Dispositif d'accouplement (1) selon la revendication 1 ou 2, dans lequel le premier élément de ressort monobloc (6) et/ou le deuxième élément de ressort monobloc (7) comportent au moins trois rondelles métalliques (19) et un plastique élastomère (20) collé ou vulcanisé entre celles-ci, les rondelles métalliques (19) et le plastique (20) étant disposés alternativement.
  4. Dispositif d'accouplement (1) selon une des revendications 1 à 3, dans lequel le premier élément de ressort monobloc (6) et/ou le deuxième élément de ressort monobloc (7) comportent au moins deux éléments partiels soudés entre eux qui comportent chacun deux rondelles métalliques (19) et un plastique élastomère (20) collé ou vulcanisé entre celles-ci.
  5. Dispositif d'accouplement (1) selon une des revendications 1 à 4, comprenant un bloc-ressort de rechange avec au moins deux rondelles métalliques (19) entre lesquelles un plastique élastomère (20) est collé ou vulcanisé de sorte que les rondelles métalliques (19) et le plastique (20) se trouvant entre les rondelles métalliques (19) forment un bloc-ressort monobloc.
  6. Dispositif d'accouplement (1) selon une des revendications 1 à 5, dans lequel au moins un des plastiques collés ou vulcanisés entre les rondelles métalliques (19) du premier ou du deuxième bloc-ressort (6, 7) présente un codage de couleur qui est représentatif d'une caractéristique mécanique, en particulier d'une force de traction maximum ou d'une force de pression maximum de l'ensemble du bloc-ressort (6, 7).
  7. Dispositif d'accouplement (1) selon la revendication 5 en combinaison avec la revendication 6, dans lequel le bloc-ressort de rechange est configuré différemment du premier ou du deuxième bloc-ressort (6, 7) et présente au moins une caractéristique mécanique différente, le bloc-ressort de rechange et le premier ou deuxième bloc-ressort (6, 7) mentionné présentant un codage de couleur différent qui est représentatif à chaque fois de la caractéristique mécanique mentionnée.
  8. Dispositif d'accouplement (1) selon une des revendications 1 à 7, dans lequel le plastique élastomère est un caoutchouc naturel vulcanisé ou un caoutchouc synthétique vulcanisé, par exemple un caoutchouc de silicone.
  9. Dispositif d'accouplement (1) selon une des revendications 1 à 8, dans lequel les rondelles métalliques (19) présentent un plus grand diamètre intérieur que le plastique collé ou vulcanisé entre celles-ci.
  10. Dispositif d'accouplement (1) selon une des revendications 1 à 9, dans lequel les rondelles de butée (8, 9), les blocs-ressorts monobloc (6, 7) et le corps de transmission de force (5) sont serrés avec une tension initiale axiale prédéfinie entre une surface latérale (23), qui se trouve entre les sections terminales (22) la zone centrale (Z), et le manchon fileté (10).
  11. Dispositif d'accouplement (1) selon une des revendications 1 à 10, dans lequel au moins une des rondelles métalliques extérieures (19) du premier et/ou du deuxième bloc-ressort monobloc (6, 7) présente une tige (21) pointant vers l'extérieur qui pénètre dans un orifice correspondant du corps de transmission de force (5) ou dans un orifice correspondant de la première ou de la deuxième rondelle de butée (8, 9).
  12. Dispositif d'accouplement (1) selon une des revendications 1 à 11, dans lequel le passage des sections terminales (22) à la zone centrale (Z) est constitué d'une seule pièce.
EP21182843.9A 2021-06-30 2021-06-30 Dispositif d'accouplement pourvu de blocs-ressorts monobloc Active EP4112416B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
HUE21182843A HUE062948T2 (hu) 2021-06-30 2021-06-30 Kapcsolószerkezet egyrészes rugószerelvényekkel
SI202130063T SI4112416T1 (sl) 2021-06-30 2021-06-30 Spojna naprava z enodelnimi vzmetnimi sklopi
PT211828439T PT4112416T (pt) 2021-06-30 2021-06-30 Dispositivo de acoplamento com conjuntos de mola em peça única
PL21182843.9T PL4112416T3 (pl) 2021-06-30 2021-06-30 Urządzenie sprzęgowe z jednoelementowymi pakietami sprężynowym
HRP20231094TT HRP20231094T1 (hr) 2021-06-30 2021-06-30 Spojni uređaj s jednodijelnim kompletom opruga
EP21182843.9A EP4112416B1 (fr) 2021-06-30 2021-06-30 Dispositif d'accouplement pourvu de blocs-ressorts monobloc
PCT/EP2022/067904 WO2023275147A1 (fr) 2021-06-30 2022-06-29 Dispositif d'accouplement doté d'un ensemble ressort formé d'un seul tenant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21182843.9A EP4112416B1 (fr) 2021-06-30 2021-06-30 Dispositif d'accouplement pourvu de blocs-ressorts monobloc

Publications (2)

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EP4112416A1 EP4112416A1 (fr) 2023-01-04
EP4112416B1 true EP4112416B1 (fr) 2023-08-02

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EP21182843.9A Active EP4112416B1 (fr) 2021-06-30 2021-06-30 Dispositif d'accouplement pourvu de blocs-ressorts monobloc

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EP (1) EP4112416B1 (fr)
HR (1) HRP20231094T1 (fr)
HU (1) HUE062948T2 (fr)
PL (1) PL4112416T3 (fr)
PT (1) PT4112416T (fr)
SI (1) SI4112416T1 (fr)
WO (1) WO2023275147A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100059470A1 (en) * 2008-09-10 2010-03-11 Carlstedt Richard A Railcar elastomeric spring
SK2012020U1 (sk) * 2020-11-16 2021-03-10 Slovenská Technická Univerzita V Bratislave Lineárne flexibilný sféricky pružný kĺb a ťahovo-tlačná tyč

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113542A (en) * 1934-01-31 1938-04-05 Budd Edward G Mfg Co Draft gear
US3966057A (en) * 1975-02-06 1976-06-29 Miner Enterprises, Inc. Draft gear mechanism and method of assembling same
US4198037A (en) * 1976-12-28 1980-04-15 Miner Enterprises, Inc. Method of making polyester elastomer compression spring and resulting product
FR2792595A1 (fr) * 1999-04-21 2000-10-27 Maintenance C I M Comp Int De Dispositif d'accouplement pour wagons de chemins de fer
US6446820B1 (en) * 2000-09-07 2002-09-10 Amsted Industries Incorporated Railcar draft gear assembly and system
ATE485988T1 (de) 2001-04-03 2010-11-15 Schwab Verkehrstechnik Ag Zug- und stosseinrichtung für schienenfahrzeuge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100059470A1 (en) * 2008-09-10 2010-03-11 Carlstedt Richard A Railcar elastomeric spring
SK2012020U1 (sk) * 2020-11-16 2021-03-10 Slovenská Technická Univerzita V Bratislave Lineárne flexibilný sféricky pružný kĺb a ťahovo-tlačná tyč
SK9218Y1 (sk) * 2020-11-16 2021-07-14 Slovenska Technicka Univerzita V Bratislave Lineárne flexibilný sféricky pružný kĺb a ťahovo-tlačná tyč

Also Published As

Publication number Publication date
WO2023275147A1 (fr) 2023-01-05
PL4112416T3 (pl) 2023-11-20
SI4112416T1 (sl) 2023-11-30
HUE062948T2 (hu) 2023-12-28
PT4112416T (pt) 2023-12-11
EP4112416A1 (fr) 2023-01-04
HRP20231094T1 (hr) 2023-12-22

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