Device with a traction and buffing device of a coupling system for a railway vehicle

Abstract

A device (10) with a pulling and pushing device of a coupling system for a rail vehicle is provided with a housing structure (13), at least one support element (17) arranged in this housing structure, a drawbar (14) mounted displaceably in the axial direction (A) by the support element, and a connecting head (20) adjacent to this drawbar. The connecting head (20) has a joint head (22) and at least one guide frame (30) mounted in the housing structure (13) with corresponding sliding guides (31, 32), wherein the joint head (22) is guided longitudinally in the axial direction (A) in the guide frame (30). Very advantageously, the connecting head (20) is assigned a pressing means (40) which forms an abutment surface (41) on the front side and which can be brought into contact with an end face (38) of a connecting member (29) which can be pivoted on the connecting head (20), at least when the latter is pivoted.This provides improved guidance and a more stable mounting of the connecting head within the overall housing structure. Furthermore, this guide frame increases the guide length of the connecting head within the housing structure, which has a very beneficial effect on the intended stability of the device.

Description

[0001] The invention relates to a device with a pulling and pushing device of a coupling system for a rail vehicle according to the preamble of claim 1.

[0002] In a device according to document CH-00399 / 23, an axially adjustable pressure element is mounted in the connecting head. The pressure element rests on the rear side against the spring element supporting the front of the connecting head and forms an abutment surface on the front side that can be brought into contact with an end face of this connecting link that can be pivoted on the connecting head, at least when the latter is pivoted. This achieves, in particular, a play or a play limitation between the connecting link, to which a coupling head is preferably attached, the connecting head, and the spring elements. The connecting head and the housing structure are formed with corresponding sliding guides, by means of which the connecting head with the drawbar and the pressure element adjustable therein are guided longitudinally in the housing structure in the axial direction.

[0003] The invention is based on the object of improving the known device in such a way that a more stable mounting is achieved in the case of the pressing means displaceably mounted in a guide for pressing against a rear end face in the case of the connecting member which can be deflected on the connecting head, so that in this pressing means there are practically no angular adjustments of its abutment surface perpendicular to the axial direction in either the transverse or vertical direction.

[0004] This object is achieved according to the invention by the features of claim 1.

[0005] The inventive solution of providing the connecting head with a joint head and a guide frame mounted in the housing structure with corresponding sliding guides, in which the joint head is guided longitudinally in the axial direction, achieves significantly improved guidance and thus a more stable mounting of the connecting head overall. Furthermore, this guide frame increases the guide length of the connecting head in the housing structure, which has a very beneficial effect on the intended stability of the device.

[0006] Associated with the connecting head is a pressure element that forms a contact surface on the front side, which can be brought into contact with the end face of a connecting link that can be pivoted on the connecting head, at least during pivoting of the connecting link. This pressure element is attached to the front of the guide frame, and the joint head is held in a recess in the guide frame, longitudinally guided to a limited extent in the axial direction.

[0007] It is very advantageous that the joint head can be inserted with its base into the U-shaped recess of the guide frame and the pressing means is fastened to the front of the guide frame at this recess, so that the joint head is mounted in this recess of the guide frame so that it can be moved to a limited extent in the axial direction.

[0008] The invention provides that this joint head consists of a rear base and an upper and lower fork wall, each provided with lateral sliding surfaces that are in sliding contact with the inner guide surfaces in the U-shaped recess of the guide frame. In contrast, the plate-shaped pressure element is dimensioned with a height such that it can be inserted between the upper and lower fork walls of the joint head and fastened to the outer, vertically extending end faces of the guide frame.

[0009] A further advantage of the invention is that, in the unloaded initial state, a gap is also provided between the pressure element and the joint head, allowing the pressure element and, with it, the guide frame to be pressed against the spring elements relative to the joint head. This ensures proper functioning of the pressure element in the connecting head.

[0010] According to the invention, a plate-shaped or other-shaped support element is guided in a guideway within the housing structure transversely to its longitudinal extension in the axial direction. A retaining ring, which abuts the last spring element, is slidably guided on the pull rod. The retaining ring either abuts the housing structure at the rear or is driven by the pull rod via a stop in the direction of tensile load. This results in a highly advantageous design of a pull and push device in the device, thereby achieving improved utilization of the energy capacity of the spring elements.

[0011] The invention and further advantages thereof are explained in more detail below using exemplary embodiments with reference to the drawing. It shows: Fig. 1 shows a longitudinal section of a device according to the invention with a holder and a pulling and pushing device of a coupling system; Fig. 2 shows a perspective view of the device according to Fig. 1 with a section partly vertical and partly horizontal; Fig. 3 a perspective side view of the device according to Fig. 1 with the housing structure; and Fig. 4 a schematic exploded view of the connecting head and the front area of the housing structure of the device according to Fig. 1 . Fig. 5 a schematic exploded view of a variant of a device according to the invention with a split housing structure; Fig. 6 a schematic longitudinal section of the device according to Fig. 5 in the unloaded initial state; Fig. 7 the longitudinal section of the device according to Fig. 6 under pressure load; and Fig. 8 the longitudinal section of the device according to Fig. 6 under tensile load.

[0012] Fig. 1 bis Fig. 3 show a device 10 with a holder 11 and with a pushing and pulling device 15 of a coupling system, particularly for a rail vehicle. It is very advantageously suited for freight wagons, in which vehicle recesses 12' are each provided in a vehicle body 12 as a holder 11, into which a device 10 can be fastened. Of course, it can also be installed in passenger cars, locomotives, or other types of wagons.

[0013] The device 10 is provided with a housing structure 13, a support element 17 held by the latter, a tension rod 14 displaceably mounted by the latter in the axial direction A and provided with a connecting head 20 at the front, and a plurality of spring elements 16, 16' arranged in a row on the tension rod 14 on both sides of the support element 17. The support element 17 is arranged approximately in the center of the housing structure 13. However, depending on the number of spring elements 16, 16' or the length of the housing structure 13, it could be placed in the front or rear part of the latter.

[0014] The preloaded spring elements 16, 16' serve to dampen the tensile and compressive forces of the pulling and pushing device that arise during operation of the rail vehicle. For example, nine can be provided at the front and four at the rear. However, a different number can be selected depending on the force requirements. Both these spring elements 16 acting on tensile forces and a stop 19 attached to the end of the drawbar 14 with a fastening means 18, as well as the spring elements 16, 16' acting on compressive forces, are arranged in a row within the housing structure 13, which enables the spring elements 16 to be compressed with a defined tensile or compressive force. In principle, only one spring element could be arranged in front of and behind the support element 17.

[0015] This connecting head 20, formed on the front side of the device 10, is designed with a linkage consisting of a joint head 22 with forked walls 23, 24 and a pivot pin 26 extending transversely to the axial direction A, to which, for example, a connecting link 29 shown with a coupling head (not shown in detail) can be linked. A coupling head could also be held directly on the pivot pin 26. This connecting link 29 is tubular and has a bushing 29' on the rear side, through whose bore 28 this pivot pin 26 removably projects.

[0016] In the connecting head 20, a pressure means 40 adjustable in the axial direction A is mounted, as can be seen in particular from Fig. 2 which bears against the rear of the spring element 16' supporting the front of the connecting head 20 and forms an abutment surface 41 on the front, which can be brought into contact with an end face 38 of this connecting member 29, which can be pivoted on the connecting head 20, at least when the latter is pivoted. The connecting member 29 can, for example, be pivoted out to approximately 17° to one side or the other in relation to the axial direction A.

[0017] According to the invention, the connecting head 20 comprises the joint head 22 and at least one guide frame 30 mounted in the housing structure 13 with corresponding sliding guides 31, 32, wherein the joint head 22 is longitudinally guided in the guide frame 30 in the axial direction A. Thus, the joint head 22 with the guide frame 30 can be guided in the housing structure 13 over a greater stroke length than in the known device.

[0018] According to Fig. 4 the joint head 22 with its base 25 connecting the fork walls 23, 24 can be inserted into the U-shaped recess 34 of the guide frame 30 and the pressing means 40 can be fastened to the front of the guide frame 30, so that the joint head 22 is mounted in this recess 34 in the guide frame 30 so that it can be moved to a limited extent in the axial direction A.

[0019] For this purpose, the joint head 22 is provided with lateral sliding surfaces 22' on its rear base 25 and on the fork walls 23, 24, which are in sliding contact with inner guide surfaces 34' in the U-shaped recess 34 of the guide frame 30. Furthermore, an axle shaft 33 is arranged at the rear of the base 25 of the joint head 22, which projects through a central opening 33' in the guide frame 30 and is connected to the pull rod 14, for example by friction welding. The spring elements 16' are slipped onto this axle shaft 33. The joint head 22 is accordingly guided on the one hand in the guide frame 30 and additionally by the pull rod 14 connected to it from the support element 17 in the housing structure 13. In principle, the axle shaft 33 could also directly form the pull rod 14 in one piece and accordingly protrude through the housing structure 13.

[0020] The plate-shaped pressing means 40 is dimensioned with a height such that it can be inserted between the upper and lower fork walls 23, 24 of the joint head 22 and fastened to the front, vertically extending end faces 35 of parallel legs 36 of the guide frame 30 by means of screws 37 or the like. The guide frame 30 extends above or below the attached pressing means 40 so that the lateral sliding surfaces 22' of the joint head 22 are in sliding contact with these inner guide surfaces 34' in the U-shaped recess 34.

[0021] The guide frame 30 is composed of these two legs 36, a transverse wall 30' with the central opening 33' for the axle shaft 33, and a frame structure 54. These sliding guides 31 preferably extend approximately over the entire length of the rectangular or otherwise shaped guide frame 30. This guide frame could be designed differently within the scope of the invention. For example, instead of four, only two or three sliding guides 31 could be provided. In cross-section, it could also be round or otherwise shaped instead of rectangular.

[0022] The abutting surface 41 of the pressing means 40 and this end face 38 of the connecting link 29 are approximately flat and, in the unloaded initial state, are preferably spaced apart and aligned approximately parallel to one another. Upon deflection of the connecting link 29, this end face 38 can be brought into rolling contact with the abutting surface 41 of the pressing means 40. This end face 38 of the connecting link 29 abuts against the abutting surface 41 of the pressing means 40, whereby the latter, together with the guide frame 30, is pressed against the spring elements 16. The spring elements 16, in turn, generate a counterforce and cause this connecting link 29 to always be pivoted back into the coaxial position with the axial direction A.

[0023] When driving a coupled vehicle, there is a pulling or pushing force on the pulling and pushing device 15, which is transmitted from the coupling to the connecting link 29 via the pivot pin 26 to the joint head 22 and from there, in the case of pulling, to the drawbar 14 and the spring elements 16 or, in the case of pushing, directly to the spring elements, which then absorb the transmitted energy.

[0024] When the connecting link 29 is deflected, primarily in a curve when a train is traveling, this compressive force, in addition to a tensile or impact force, can be transmitted from the connecting link 29 to the pressing means 40 and the guide frame 30, and from there to the spring elements 16. This compressive force displaces the pressing means 40 with the guide frame 30 relative to the joint head 22 in the direction toward the spring elements 16.

[0025] In the unloaded initial state, in which this play preferably exists between the end face 38 of the connecting link 29 and the abutment surface 41 of the pressing means 40, a distance a is provided between the pressing means 40 and the joint head 22, which allows the pressing means and with it the guide frame to be pressed against the spring elements relative to the joint head. The base 25, with its wall thickness, is thinner than the recess 34, viewed in the axial direction. When the connecting link 29 is deflected, this distance a is reduced, and the pressing means 40 can strike the base 25 of the joint head 22.

[0026] According to Fig. 3 the housing structure 13 is assigned, at least in the front area, a frame shell 44 running all around, by means of which both the guide frame 30 and the joint head 22 are guided by an almost play-free external sliding guide.

[0027] The housing structure 13 can be fixed in the vehicle body 11 of the rail vehicle by fastening means, wherein it can be clamped between at least one jaw arranged in the vehicle body 11, which engages the front end of the housing structure 13, and wedges 42 at the rear in the vehicle recess 12' of the vehicle body 11. The respective wedges 42 are each arranged so as to be longitudinally adjustable by at least one fastening unit 43 arranged parallel in its longitudinal direction, such that the wedge 42 is fixed in the clamping position after the housing structure 13 has been clamped. The fastening unit 43 has at least one adjusting means connected to the wedge 42 in the housing structure 13, preferably a screw 48, by means of which the wedge 42 can be adjusted and clamped between the housing structure 13 and the vehicle body 11, and in the clamping position, the adjusting means can be fixed by lock nuts 46 or the like.Advantageously, each of the two wedges 42 is assigned such an adjustment means and is individually secured. This provides a further advantage in that these wedges 42 remain at the set fixed height, usually within a tenth of a millimeter range, when the distance between the housing structure 13 and the vehicle body 11 changes. Positioning means 47 are also indicated at the transverse rib 48 for assembly purposes of the device.

[0028] Associated with the joint head 22 is at least one indicator element 39, a shear pin with a notch, which is attached in a clearly visible manner below the pivot pin 26 and the fork wall 24. If the indicator element breaks when it is moved to the stop position and broken off there by a shear element in a support unit 50 for the housing structure 13, this is visually indicated. If the shear element breaks in this way, the entire device must be inspected and, if necessary, at least parts of it, along with the shear element, must be replaced.

[0029] Of course, this indicator element could be designed as an electrical signaling device instead of a bolt, with an electrical connection to a control center, a lamp, and / or an acoustic indicator being established via an electrical cable (not shown in detail). However, this could also be achieved mechanically or electrically using another known indicator element.

[0030] Furthermore, the housing structure 13 is supported by several feet 55 on the underside on at least one, preferably two, multi-part support units 50 in the vehicle body 11. These support units 50 each comprise a bracket 51 extending below the housing structure 13 and screws 52 that can be actuated laterally to the housing structure 13 and screwed tight into the vehicle body. These support units 50 enable the housing structure 13 to be positioned in the vehicle body 11 during assembly, thus facilitating easier installation of the device 10.

[0031] The corresponding sliding guides 31, 32 of the guide frame 30 or the housing structure 13, as seen in cross-section, are formed by rectangularly angled guideways with a rounded transition, which are provided in the housing structure 13 starting from the front end thereof. Accordingly, two such sliding guides 31, 32 are formed in pairs on each side. Their corners are advantageously rounded, but they could also be angular without these rounded edges. They could also be dovetail-shaped or similarly shaped.

[0032] The housing structure 13 is reinforced at these sliding guides 31, 32 by this outer frame shell 44, which is formed on the top and bottom sides by a transverse rib 56, 57 and laterally by the wall terminations 58. This rectangular, closed frame shell 44 then forms these sliding guides 32 at its four corners. Also attached to the front side at these wall terminations 59 are the protruding spacer plates (not shown in detail), which enable centering of the housing structure 13 in the vehicle body 11.

[0033] Fig. 5 bis Fig. 8 show a device 60 with a pulling and pushing device 65 of a coupling system for a rail vehicle. This device 60 is similar to that according to Fig. 1 bis Fig. 3 designed. Therefore, only the differences are shown below, whereby the same reference numerals are used for the same components. The device 60 is provided with a housing structure 63, a support element 77 movably held by the latter, a pull rod 74 displaceably mounted by the latter in the axial direction A and connected at the front to a connecting head 20, and on both sides of the support element 77 with a plurality of spring elements 66, 67 arranged in a row on the pull rod 74. The support element 77 is arranged approximately in the middle of the housing structure 63. However, depending on the number of spring elements or the length of the housing structure 63, it could be placed in the front or rear part of the latter.

[0034] According to the invention, the connecting head 20 has the joint head 22 and the guide frame 30 mounted in the housing structure 63 with corresponding sliding guides 31, 32, wherein the joint head 22 is guided longitudinally in the guide frame 30 in the axial direction A, as in the embodiment according to Fig. 4 of the other embodiment is explained in detail.

[0035] The preloaded spring elements 66, 67 serve to dampen the tensile and compressive forces acting on the traction and pushing device 65 during operation of the rail vehicle. For example, four spring elements 66, 67 are provided at the front of the support element 77 and three at the rear. In principle, only one spring element each, or a different number than shown, could be arranged in front of and behind the support element 17.

[0036] The housing structure 63 of the device 60 is designed in two parts with a front and a rear frame 63', 63" so that the support element 77 can be installed therein. The plate-shaped or other-shaped support element 77 is guided in a guide track 71 within the housing structure 63 transversely to its longitudinal extent in the axial direction A. Of course, this housing structure could be divided into two or more parts other than shown, or the support element 77 could also be designed in several parts so that it can be integrated into a one-piece housing structure, as shown in Fig. 3 shown, could be used and installed.

[0037] The spring elements 66, 67 are on both sides of the support element 77 in the starting position, as in Fig. 6 illustrated, unloaded or preloaded with a slight pressure. The pull rod 74 connected to the joint head 22 extends to the end of the housing structure 63. This pull rod 74 is provided at its end with a retaining ring 68 slidably mounted thereon and a detachably attached stop 69 cooperating with the latter. This retaining ring 68, which abuts the last spring element 67, either abuts the rear of the housing structure 63 or is carried along by the pull rod 74 via the stop 69.

[0038] As in Fig. 7 As can be seen, in contrast to the pulling and pushing device 15 of the device 10 explained above, when subjected to an impact load by the connecting link 29, the joint head 22 and the guide frame 30, both the spring elements 66 and the spring elements 67 acting on a pulling force are compressed. The pull rod 74 is pushed into an end position 74' behind the housing structure 63, while the retaining ring 68 and with it the spring elements 67 held by the latter are stopped in the housing structure 63. In addition, the support element 77 in the guide track 71 within the housing structure 63 is also pushed rearward in the axial direction A up to a stop surface 61 by the pushing spring elements 66 into an end position 77', by means of which these spring elements 67 are compressed by a defined amount. In this illustrated end position, the guide frame 30 preferably strikes with its end face 30' against the striking support element 77.

[0039] Fig. 8 shows the pull and push device 65 in the end position when a tensile load is applied from the connecting link 29 to the joint head 22 and the guide frame 30. In this end position, at least the spring elements 67 are compressed between the support element 77 and the retaining ring 68. The support element 77 guided in the guide frame 30 is positioned at a stop surface 62 therein, and the other spring elements 66 and the guide frame 30 are positioned as in the initial position in the unloaded state. The pull rod 74, in turn, is pushed into the end position 74" inside the housing structure 63. The respective position of the connecting head 20 in the housing structure 63 can vary between these end positions depending on the tensile or compressive load, which is not shown in detail.

[0040] The invention is sufficiently demonstrated by the embodiment explained above.

[0041] As a variant, the corresponding sliding guides of the connecting head and the housing structure could be designed differently instead of dovetail or rectangular guideways, for example, as slide rails with rollers guided on them. Likewise, the housing structure and, with it, the connecting head could be tubular or rectangular in cross-section with rounded corners. These sliding guides could also be round, polygonal, or otherwise shaped in cross-section and be anti-rotation or torsionally rigid.

Claims

1. Device with a pulling and pushing device of a coupling system for a rail vehicle, which is provided with a housing structure (13, 63), at least one support element (17, 77) arranged in this housing structure, a drawbar (14, 74) displaceably mounted by the support element in the axial direction (A), and with a connecting head (20) adjacent to the drawbar (14), characterized in that the connecting head (20) has a joint head (22) and at least one guide frame (30) mounted in the housing structure (13, 63) with corresponding sliding guides (31, 32), wherein the joint head (22) is guided longitudinally in the axial direction (A) in the guide frame (30).

2. Device according to claim 1, characterized in thatthe connecting head (20) is assigned a pressing means (40) which forms an abutment surface (41) on the front side, which can be brought into contact with an end face (38) of a connecting member (29) which can be pivoted on the connecting head (20), at least when the latter is pivoted.

3. Device according to claim 1 or 2, characterized in that the joint head (22) is guided longitudinally with its base (25) in a recess (34) of the guide frame (30) and the pressing means (40) is fastened to the front of the recess (34) in the assembled state, so that the joint head (22) is guided in this recess (34) in the guide frame (30) so as to be displaceable to a limited extent in the axial direction (A).

4. Device according to claim 3, characterized in that the U-shaped recess (34) can be closed at the front by the pressing means (40).

5. Device according to claim 1 or 2, characterized in thatthe joint head (22) has a rear base (25) and an upper and lower fork wall (23, 24), each provided with lateral sliding surfaces (22') which are in sliding contact with inner guide surfaces (34') in the recess (34) of the guide frame (30).

6. Device according to one of the preceding claims 2 to 5, characterized in that the plate-shaped pressing means (40) is dimensioned with such a height that it can be moved between the upper and lower fork walls (23, 24) of the joint head (22) and can be fastened to vertically extending end faces (35) of legs (36) of the guide frame (30).

7. Device according to claim 6, characterized in thatthe legs (36) of the guide frame (30) extend above or below the attached pressing means (40) so that the lateral sliding surfaces (22') of the fork walls (23, 24) of the joint head (22) are in sliding contact with the inner guide surfaces (34') in the U-shaped recess (34).

8. Device according to one of the preceding claims 2 to 7, characterized in that in the unloaded initial state, in which there is preferably a play between the end face (38) of the connecting member (29) and the abutting surface (41) of the pressing means (40), a distance (a) is provided between the pressing means (40) and the joint head (22), which distance enables the pressing means (40) and with it the guide frame (30) to be adjusted relative to the joint head (22) by means of a plurality of spring elements (16) arranged in a row on the tension rod (14) between the latter and the support element (17).

9. Device according to one of the preceding claims 1 to 8, characterized in that viewed in the axial direction (A), the wall thickness of the base (25) of the joint head (22) is thinner than the recess (34).

10. Device according to one of the preceding claims 1 to 9, characterized in that the housing structure (13) is assigned, at least in the front area, a frame shell (44) running all around, by means of which both the guide frame (30) and the joint head (22) are guided externally by an almost play-free sliding guide.

11. Device according to one of the preceding claims 1 to 10, characterized in that an axle shaft (33) is arranged at the rear of the base (25) of the joint head (22), which projects through a central opening (33') in the guide frame (30) and is connected to the pull rod (14), so that the joint head (22) is guided in the guide frame (30) and additionally by the pull rod (14) connected to it from the support element (17).

12. Device according to one of the preceding claims 1 to 11, characterized in that this guide frame (30) is composed of these two legs (36), a transverse wall (30') with the central opening (33') for the axle shaft (33) and a frame structure (54), wherein these sliding guides (31) preferably extend approximately over the entire length of the rectangular or other-shaped guide frame (30).

13. Device according to one of the preceding claims 1 to 12, characterized in that in the pulling and pushing device (15, 65) between the guide frame (30) or the pull rod (14, 74) at the end and the support element (17, 77), preferably a plurality of spring elements (16, 16', 66, 67) arranged one after the other on the pull rod (14, 74) are fitted.

14. Device in particular according to one of the preceding claims 1 to 13, characterized in thata plate-shaped or other-shaped support element (77) is guided in a guide track (71) within the housing structure (63) transversely to its longitudinal extent in the axial direction (A), and a retaining ring (68) abutting the last spring element (67) is slidable on the pull rod (74), which either abuts the housing structure (63) on the rear or is carried along by the pull rod (74) in the direction of tensile load via a stop (69).

15. Device according to claim 14, characterized in that the support element (77) is displaceable from an unloaded starting position into a shock-loaded end position (77'), in the latter case both the spring elements (66) between the guide frame (30) and the support element (77) and the spring elements (67) acting on a tensile force between the support element (77) and the retaining ring (68) on the pull rod (74) are compressed by the connecting member (29).

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