AT516014A1 - Immersion pin for longitudinal and lateral force transmission between a bogie and a car body - Google Patents

Abstract

The invention relates to a submersible pin for longitudinal and transverse force transmission between a bogie and a car body, said dipping pin along its longitudinal axis (8) from a wide end (2) tapers to a narrow end (3), and wherein the immersion pin a main body ( 1) and ribs (4), which are arranged for supporting the car body on the base body. To make do without technically complex constructions for decoupling between plunger and car body, it is provided that the plunger is at least partially, in particular completely, made of an aluminum alloy.

Description

description

Submersible pins for longitudinal and lateral force transmission between a bogie and a body

Technical area

The invention relates to a submersible pin for longitudinal and lateral transmission between a bogie and a car body, wherein the dive tap tapers along its longitudinal axis from a wide end to a narrow end, and wherein the dipping pin comprises a main body and ribs arranged to support the car body on the base body. The invention is particularly applied to rail vehicles.

The dipping pin tapers in the direction of its longitudinal axis, which forms the axis of rotation in the assembled state of the dipping pin, so that the narrow end of the dipping pin forms the actual pin.

Either the wide end of the dipping peg is fastened to the carbody and the narrow end of the dipping peg projects into an opening on a bogie or the wide end of the dipping peg is secured to the bogie and the narrow end of the dipping peg projects into an opening on a car body.

In the sense that the longitudinal axis is the axis of rotation, it is also conceivable that the dimension of the dipstick in the direction of the longitudinal axis is smaller than normal to the immersion pin is thus less long than wide.

The dowel usually transmits longitudinal forces, shear forces and vertical forces.

Dowel pins, unlike pivots, do not have a round bushing or the like, as is the case with a lemniscate linkage of pivots.

State of the art

Die-cast steel dowels and methods of making them are well known. These conventional dowels are expensive and therefore expensive to manufacture.

Trunnions with ribs on the base body are known, for example, from DE 102008 014 576 A1, where the ribs are attached to the basic body in a material-locking manner and are produced, for example, by cutting out of a steel sheet.

A large load on the immersion pin is longitudinal impact (ie in the longitudinal or moving direction of a vehicle) in an accident. Therefore, the immersion pins are usually made of a ductile material, such as steel. However, the carbody is often made of aluminum.

The operating temperature of a rail vehicle may vary greatly depending on the climate, e.g. between -50 ° C and + 50 ° C.

Due to the different materials of the rail vehicle, that is, when the car body made of aluminum and the immersion pin is made of a ductile material, it comes to tensions in the mounting surface, such as the gland, the dip pin and the Wagenkastens or because of the different thermal expansions of the materials. Bogie. These voltages can lead to failure of the connection in the event of severe temperature fluctuations.

In order to compensate for the different thermal expansions between the dowel pin and the body of the vehicle, complex designs for decoupling the components are usually required.

Presentation of the invention

It is therefore an object of the present invention to provide a dowel which does not require any technically complex structures for decoupling from that component (car body or bogie) to which it is fixedly connected and which - at least at the point where the dipping peg is fastened Aluminum or an aluminum alloy is made.

This object is achieved by a plunger with the features of claim 1, wherein the plunger tapers along its longitudinal axis from a wide end to a narrow end, and wherein the plunger pin comprises a base body and ribs arranged to support the carriage box on the base body.

It is inventively provided that the Tauchzapfenz is at least partially, in particular completely, made of an aluminum alloy.

The term "aluminum alloy" includes all materials, most of which are aluminum. Preferably, however, thermosetting aluminum alloys are used, for example, AlMgSi alloys such as AC-42100-S-T6 according to EN1706. For the immersion pin, in particular the same aluminum alloy can be used as for that component with which the immersion pin is firmly connected in the operating state, that is usually the car body. Should the dipstick be mounted on the bogie, then that aluminum alloy would be to be used for the dipping pin from which the bogie is made at the junction with the dowel.

Advantageous embodiments of the invention are defined in the respective dependent claims.

By using materials of similar thermal expansion for the submersible pin and for the component to which it is attached (usually the body), stresses due to differential thermal expansion are avoided. There is therefore no additional stress in the attachment, such as a gland, between the stem and component , the attachment can be carried out directly - without additional coupling elements.

The low ductility of the aluminum alloy can be balanced by appropriate shaping using ribs. Aluminum alloys also have the advantage over steel of being easier to form and of lower weight. Aluminum alloys also show a very low strength drop at low temperatures, e.g. -50 ° C.

It can be provided that the base body forms an outer shell and inside the base body curved ribs are arranged, which are supported on the inside of the base body. The ribbed vault formed in such a manner inside the dipping pin with its openings (formed by the distances between the individual ribs) ensures the longitudinal and lateral force transmission and provides snow and water from the top drainage possibility.

The curvature of the ribs is inwardly directed, seen in the direction of the longitudinal axis of the dipping spigot at their lateral ends (where they are attached to the inside of the base body) towards the wide end of the dipping spigot than in the middle of the respective rib.

When several plane ribs are arranged parallel to each other, forces can be transferred particularly well in parallel with the ribs. In the mounted state of the dipping pin, the ribs should therefore be aligned in the longitudinal direction of the rail vehicle in order to be able to absorb the longitudinal forces (operating forces), in particular the longitudinal impacts in the event of an accident.

One embodiment provides that the ribs are supported on a ground provided within the body which is at an angle with the longitudinal axis of the dipper and closer to the narrow end of the dipper.

The floor is connected within the main body, in particular continuously or on all sides. If that part of the dipstick that is between the bottom and the narrow (tapered) end of the dowel pin breaks (such as due to an accident due to an accident), this sloping bottom ensures that the remaining dowel pins permanently mounted on the car body hooks into the floor of the bogie and the bogie is still taken.

Regardless of whether or not the floor includes an angle with the longitudinal axis of the dowel, provision may be made for the ridges to rest on the floor provided within the base, this support for at least one ridge (in particular for all ridges) being interrupted by a round recess provided in the ridge becomes. The recess forms a drain for water entering from above or for dirt, optionally also a recess in the bottom may be provided so that water or dirt can drain through the fins and the bottom.

Normal to the planar ribs may be provided at least one central rib, which runs through the longitudinal axis of the dip plug. This serves for better lateral force transmission. Not only one, but also several midribs may be provided.

If the support of at least one rib (in particular of all ribs) at the bottom is interrupted by a round recess provided in the rib, this respective recess can be designed to enclose that delimiting edge of the central rib which faces the narrow end of the immersion pin. The center rib has four limiting edges: the two lateral edges will usually be fully connected to the body. The limiting edge of the center rib facing the wide end of the dipper will typically be clear except for the connection with the ribs. The limiting edge of the central rib, which faces the narrow end of the dip-peg, is usually also free, ie not connected to the ground, except for the connection with the ribs. The latter delimiting edge would then end approximately at the recess of the ribs or project some (e.g., less than one quarter of the dimension of the recess in the direction of the longitudinal axis of the dip plug) into the recess, see Fig. 6.

For better introduction of longitudinal forces in the dipping pegs, provision can be made for providing a flat plate for longitudinal force absorption near the narrow end of the dipping peg on two opposite sides of the base body, the two plates being aligned parallel to one another.

For better introduction of transverse forces in the immersion pegs it can be provided that on each of two opposite sides of the base body there is provided one further plate for transverse force absorption, the two plates being aligned parallel to one another and normal to the plates for longitudinal force absorption. If the transverse force-receiving plates, measured toward the longitudinal recess of the dipstick, are farther from the narrow end of the dipstick than the longitudinal force-receiving plates, then there still remains between the transverse force receiving plates and the narrow end of the dipstick

Space to allow inside or outside of the body at least attack aQuerdämpferelement.

In this respect, it can be provided that at least one opening in the base body is provided between the plates for transverse force absorption and the narrow end of the dipping pin (ie closer to the narrower end of the dipping pin in the direction of the longitudinal axis of the dipping pin) in order to guide a transverse force damper arranged normally to the plates for transverse force absorption out of the base body to be able to.

The longitudinal force absorbing plates and / or the lateral force absorbing plates may be provided with an abrasion resistant layer, such as steel, for example stainless steel. Thereby, the plates made of the aluminum alloy can be prevented from being worn by scuffing at the corresponding locations of the opening into which the dowel protrudes in the operating state.

If a three-dimensional grid is provided in the interior of the base body near the narrow end of the dowel, in particular between the plates for longitudinal force absorption, the grid increases the stability of the dowel against longitudinal forces with a low dead weight. A three-dimensional grid is understood to mean gratings and / or ribs arranged in different spatial directions, which are firmly connected to one another in grid points or along lines.

It may be provided for improved absorption of longitudinal and transverse forces that a part of the grid bars of the three-dimensional grid are arranged normal and another part parallel to the direction of the longitudinal axis of the dip pin.

If outwardly facing engagement bolts are provided at the wide end of the dipstick parallel to the longitudinal axis of the dipstick, then in addition to or in case of overloading the attachment of the dipstick, they secure it from slipping normal to the longitudinal axis.

If at the narrow end of the dipstick a releasably mounted lifting plate is provided, which is wider than the narrow end of the dipping pin, then in the assembled state of the dipping plug it can act as a lift-off protection. In addition, forces can be transmitted in the direction of the longitudinal axis of the dipping cone to the opposite side of that component which protrudes the dipping pin. The lift plate can be disassembled to tie the component (usually the bogie) or remove the cross damper.

At the wide end of the dip can a

Verschraubungsabschnitt be provided, by means of which the dipping pin can be bolted to the car body or the bogie.

The immersion pin can be made by casting. This is the preferred mode of manufacture for submersible pins having a length along the longitudinal axis of more than one meter. In principle, especially with shorter immersion pegs, it is also conceivable to produce several castings, milling parts or forgings and then to weld them together. Or make the dipstick as a single forged or milled part.

Brief description of the figures

To further explain the invention, reference is made in the following part of the description to the figures, from which further advantageous embodiments, details and further developments of the invention are to be taken. Show it:

1 is a perspective view of an immersion pin according to the invention,

FIG. 2 is a side elevational view of the immersion peg of FIG. 1 looking at the transverse force receiving plate. FIG.

3 is a side view of the immersion peg of FIG. 1 looking at the longitudinal force receiving plate; FIG.

4 shows a longitudinal section through the plunger according to line X-X in Fig. 2,

Fig. 5 is a plan view of the dip pin of Fig. 1 with a view of the ribs in the interior of the main body of the dip spigot, Fig. FIG. 6 shows a section through the immersion pin parallel to the drawing plane in FIG. 2, FIG.

7 shows a section through the immersion pin parallel to the drawing plane in FIG. 3.

FIG. 8 is a side view of the dip pin of FIG. 7, showing the section line for the section of FIG. 7; FIG.

Fig. 9 is a longitudinal section through the plunger according to line X-X in Fig. 2, but opposite to the drawn viewing direction.

Embodiment of the invention

Fig. 1 shows an immersion pin according to the invention inperspective representation such that the left end of the wide end 2 and the right end of the narrow end 3 of the dipping plug comes. The basic body 1 has approximately the shape of a quadrilateral truncated pyramid, which merges into a cuboid towards the narrow end 3. The dimension of the main body 1 is in the illustrated form in the direction of the longitudinal axis 8 a little over one meter. In the sense that the longitudinal axis 8 of the dipping pin is the axis of rotation in the operating state of the dipping pin, it is also conceivable that the dimension of the dipping pin in the direction of the longitudinal axis 8 is smaller than normal so that the dipping pin is less long than wide.

At the wide end 2 of the immersion pin or the main body 1is provided on two opposite sides of the main body 1 each a Verschraubungsabschnitt 15, which then in the assembled state of the dip pin the screw force FS - parallel to the longitudinal axis 8 of the dip, see Fig. 4 - acts. Of the

Bolting portion 15 has centrally a driving pin 11, which dips in the assembled state of the dipping pin in a corresponding recess of the component, to which the dipping pin is firmly connected, usually the Wagenkasten.Der driving pin 11 can receive a force FM, normal to the longitudinal axis 8 (see FIG 4) of the dipping pin.

At the narrow end 3, an approximately rectangular lifting plate 12 is releasably secured, which is wider in one direction than the narrow end 3 of the dip-peg, while it is narrower in the other direction than the narrow end 3.

The main body 1 is made in one piece, except for the driving bolts 11 and the lifting plate 12, in this case as

Casting of a thermosetting aluminum alloy. The base body 1 thus comprises in particular ribs 4, a middle rib 7, a bottom 5, plates, 9, 10 and screwed sections 15. The driving pins 11 and the lifting plate 12 are fastened to the base body 1 after the production of the casting. The lift-off plate 12 may also be made of an aluminum alloy, such as a frit. The lift-off plate 12 may be made, for example, of a stronger thermosetting aluminum alloy than the base body 1.

The main body 1 is formed near the wide end 2 as a hollow body (similar to a four-sided truncated pyramid) by a plurality of planar and mutually parallel curved ribs 4 are provided. The ribs 4 are connected to the inside of the base body 1 on both sides, respectively. The curvature of the ribs 4 is directed away from the wide end 2 of the dipping pin, so that the arched delimiting edge of a rib 4 at its two

Connecting points with the base body 1 closer to the wide end 2 of the dip-peg than at a distance from the connection points with the base body 1, see also Fig. 6.Normal to the flat ribs 4 and these cutting, see Fig. 5 and 6, there is also provided a flat and domed central rib 7 extending through the longitudinal axis 8 of the dipper. "Corrugated " It should be understood that the planar rib or midrib has at least one delimiting edge in its plane which is curved.

Near the narrow end 3 of the dip-peg, where the base 1 is approximately parallelepiped-shaped with approximately square cross-section, two flat plates 9 for receiving longitudinal forces FL are provided on opposite sides of the base 1, the two plates 9 being aligned parallel to each other. The plates 9 are approximately square with rounded corners. The size and shape of the plates 9 depends on the size of the longitudinal buffers, which can engage the plates 9 of the dipper in the operating state of the dip-ping, and thus in all operating conditions of the vehicle.

Looking in the direction of the longitudinal axis 8, further direction wide end 2 and overlapping with the plates 9, provided on the other two opposite sides of the body 1, two more plates 10 for receiving transverse forces FQ, wherein the two plates 10 are aligned parallel to each other and normal to the plates 9 , The plates 10 are also formed approximately square with rounded corners. The size and shape of the plates 10 depends on the dimensions of the transverse buffers, which can engage the plates 10 during operation of the dipper and thus in all operating conditions of the vehicle.

If the aluminum alloy of the base body 1 is too soft for a rubbing longitudinal buffer on the plates 9 and 10, then on the relatively thick cast aluminum alloy plates 9, 10 a plate (e.g. 2 mm thick, made of stainless steel, which prevents chafing against the aluminum alloy of the plates 9, 10.

Between the plates 10 and the narrow end 3 there is provided a receptacle 16 for a transverse damper 17 (see FIG. 7), the lateral damper force FD is indicated as a double arrow, it is normal to the longitudinal axis 8.

Fig. 2 shows a side view of the dip pin of Fig. 1 looking at a plate 10 for transverse force absorption. The plates 10 are seen approximately in the direction of the longitudinal axis 8 between the narrow end 3 and the wide end 2 of the dip, here a little closer to the wide end 2. If the dive is attached to the car body, the narrow end 3 projects down into the bogie. In this case, the plates 9 then come to lie to the longitudinal force absorption lower than the plates 10 for transverse force absorption. There are advantages in derlauftechnischen design of the vehicle when the plates 10 and thus the transverse buffers sit higher than the plates 9 and thus the longitudinal entrainment.

Between the receptacle for the transverse damper 16 and the plate 10, the grid ribs 18 of the grid 6 of Fig. 4 are awarded.

Fig. 3 shows a side view of the dip pin of Fig. 1 with a view of the plate 9 for longitudinal force absorption.

Fig. 4 shows a longitudinal section through the plunger according to line X-X in Fig. 2 and thus the same viewing direction as Fig. 3. The four ribs 4 are each connected at their upper side (the narrow end 3 facing side or demschmalen end 3 facing the limiting edge) to the bottom 5 of the ribbed vault, wherein the bottom 5 extends obliquely to the longitudinal axis 8 of the dip spigot, just made here and connected along its circumference to the main body 1. The comparison with Fig. 3 shows that the bottom 5 extends approximately in that half of the plate 9, which is closer to the wide end 2.

The center rib 7 is connected laterally (in FIG. 4, ie, above and below) continuously to the inside of the main body 1. It has at its limiting edge, the zumschalen end 3 of the dip (that is, the right edge in Fig. 4), a distance from the bottom 5, so is not connected to the bottom 5. This edge is arched away from the narrow end 3 of the dipstick. The center rib 7 is curved away from the wide end 2 of the dipping pin at its limiting edge, which faces the wide end 2 of the dipping pin (ie, the left edge in Fig. 4). The middle rib 7 is therefore narrower (measured in the direction of the longitudinal axis 8) as its connection points with the main body 1 due to the curvature of its two limiting edges at a distance from the base body 1, in particular in the region of the longitudinal axis 8.

To the right of the bottom 5 or between the bottom 5 and the narrow end 3, the otherwise hollow cuboid interior of the base body is filled with a three-dimensional grid 6. The grid bars parallel to the longitudinal axis 8 are arranged in the extension of the ribs 4 and also designed as ribs (grid ribs 18). The grid 6 is cast together with the main body 1.

The remaining grids extend at an angle to the longitudinal axis 8. For those normal to the cutting plane, two directions are provided: where the distance between bottom 5 and narrow end 3 is greater, the grids extend normal to the longitudinal axis 8. There, where the distance between Bottom 5 and narrow end 3 is smaller, the bars extend parallel to the ground 5. The most recent bars are normal to the cutting plane.

In Fig. 5 is a plan view of the dip pin of Fig. 1 with respect to the ribs 4 in the interior of the main body 1 of

Diving spigot shown. It can be seen that the four ribs 4 are formed symmetrically to the central rib 7.

By the illustrated embodiment with the ribs 4 and the net structure through the three-dimensional grid 6, the immersion pin according to the invention corresponds to the required impact and strength requirements despite lower strength properties of the material compared to steel.

Fig. 6 shows a section through the plunger parallel to the drawing plane in Fig. 2, so that there is a clear view of an entire fin 4. The ribs 4 are not connected continuously to the bottom 5 at their limiting edge, which faces the narrow end 3 of the dip-peg, but have a round, in this case elliptical, recess 19, which interrupts the connection with the bottom 5 in the middle of the bottom 5 , The recess 19 extends approximately as far as the direction of the wide end 2 of the dip-peg, that it encloses that limiting edge of the central rib 7, which faces the narrow end 3 of the dip-peg. Measured along the longitudinal axis 8, the size of the recess 19 here is slightly less than half the dimension of the rib 4. Measured normal to the longitudinal axis 8, the largest dimension of the recess 19 is about 50-70%, in particular 60%, of the dimension of the rib 4 at that location.

Between bottom 5 and narrow end 3 of the dip-ping, an opening 20 for a transverse damper is provided in each of the boundary walls of the base body 1, which are parallel to the planes of the ribs 4, see FIG. 7.

Fig. 7 shows a section through the plunger parallel to the drawing plane in Fig. 3, wherein now the transverse damper 17 is incorporated in the base body 1. In one of the - opposite openings 20, the receptacle 16 is fixed to the transverse damper 17, to which the transverse damper 17 is attached. The transverse damper 17 thus engages the inside of the base body 1 and is screwed from the outside to the receptacle 15. Through the other opening 20 of the transverse damper protrudes from the base body 1, so that it can be connected in the operating state with that component against which the immersion pin rotates.

The transverse damper 17 itself is arranged in the illustrated case largely inside the base body 1. Therefore, the one-sided cavernous opening in the body 1, between the bottom 5 and the narrow end 3, must be provided. Accordingly, the grid 6 shown in FIG. 4 with the grid ribs 18 must have a recess for the quiver damper 17. Thus, longitudinal forces can be transmitted with the immersion peg according to the invention, whereby there is still enough space available for the transverse damper 17.

The central rib 7 runs in the same direction as the

Transverse damper 17.

Fig. 8 shows a side view of the dip pin of Fig. 7, wherein the section line C-C of Fig. 7 is located. DieFig. 8 corresponds to FIG. 2, in contrast to FIG. 2, FIG. 8 now the transverse damper 17 mounted.

Fig. 9 shows a longitudinal section through the immersion pin according to line X-X in Fig. 2, but opposite to the direction of view in Fig. 2eignanged viewing direction (the longitudinal section in the marked direction of view is shown in Fig. 4). InFig. 9 it can be seen that the ribs 4 are supported on the bottom 5 provided inside the main body 1, this support being interrupted for all-here four-ribs 4 by a round recess provided in each case in the rib. Also, the bottom 5 has a recess (ie, an opening) on the side closest to the narrow end 3, so that water or dirt entering the immersion pin from the wide end 2 in the operating state of the immersion pin is interposed between the ribs 4 (or between body 1 and ribs 4) runs down through the recesses of the ribs 4 and the recess in the bottom 5in the region of the grid 6 flows and can flow through an opening immal end 3 of the body. Of course, any lifting plate 12 may not cover this opening in the narrow end 3, see Fig. 1. One possible path of water through the dip is shown in Fig. 9 by thick black arrows.

LIST OF REFERENCES: 1 main body 2 wide end of the dip pin 3 narrow end of the dip pin 4 rib 5 bottom 6 grid 7 center rib 8 longitudinal axis of the dip pin 9 plate for longitudinal force absorption 10 plate for transverse force absorption 11 driving pin 12 lifting plate 13 screwing surface 14 screw hole 15 screwing 16 receptacles for transverse damper 17 17 Transverse damper 18 Lattice ribs 19 Round recess of the rib 4 20 Opening for transverse damper 17 FA Lifting force FD Transverse damper force FL Longitudinal force FM Force on driving pin 11 FQ Transverse force FS Screw force

Claims (20)

An immersion peg for longitudinal and lateral force transmission between a bogie and a body, the pintle tapering along its longitudinal axis (8) from a broad end (2) to a narrow end (3), and wherein the immersion peg comprises a body (1) and ribs (15). 4), which are arranged for supporting the car body on the base body, characterized in that the immersion pin is at least partially, in particular completely, made of an aluminum alloy. 2. immersion peg according to claim 1, characterized in that the aluminum alloy is heat-curable. 3. immersion pin according to claim 2, characterized in that the aluminum alloy is an AlMgSi alloy. An immersion peg according to any one of claims 1 to 3, characterized in that the base body (1) forms an outer shell and inside the base body (1) are arranged arched ribs (4) which bear against the inside of the base body (1). 5. immersion pin according to claim 4, characterized in that a plurality of planar ribs (4) are arranged parallel to each other. 6. immersion peg according to one of claims 4 to 5, characterized in that the ribs (4), that the ribs (4) on a within the base body (1) provided bottom (5) are supported, which forms an angle with the longitudinal axis ( 8) of the dip-peg and closer to the narrow end (3) of the dip-peg. An immersion peg according to any one of claims 4 to 6, characterized in that the ribs (4) rest on a base (5) provided inside the body (1), said support for at least one rib (4) being formed by a rib (4) in the rib (4) ) provided round recess (19) is interrupted. An immersion peg according to any one of claims 4 to 7, characterized in that normal to the plane ribs (4) there is provided at least one central rib (7) passing through the longitudinal axis (8) of the dip-peg. An immersion peg according to claims 7 and 8, characterized in that the respective recess (19) of the ribs (4) encloses that limiting edge of the central rib (7) facing the narrow end (3) of the immersion peg. An immersion peg according to any one of claims 1 to 9, characterized in that close to the narrow end (3) of the immersion peg on each of two opposite sides of the base body (1) there is provided a flat plate (9) for longitudinal force absorption, the two plates (9) being parallel to each other are aligned. 11. An immersion peg according to claim 10, characterized in that on two opposite sides of the base body (1) each have a further plate (10) for transverse force absorption is provided, wherein the two plates (10) are aligned parallel to each other and normal to the plates (9) for longitudinal force absorption , An immersion peg according to claims 10 and 11, characterized in that the lateral force receiving plates (10), measured in the direction of the longitudinal axis (8) of the dipping peg, are farther from the narrow end (3) of the dipping peg than the longitudinal force absorbing plates (9). An immersion peg according to claim 12, characterized in that between the transverse force receiving plates (10) and the narrow end (3) of the immersion peg there is provided at least one opening in the body (1) for displacing a lateral force damper (17) perpendicular to the transverse force receiving plates (10) ) to be able to lead out of the base body (1). 14. dipping pin according to claim 10 and / or 11, characterized in that the plates (9) for longitudinal force absorption and / or the plates (10) for lateral force absorption are provided with an abrasion-resistant layer. 15. immersion peg according to one of claims 1 to 14, characterized in that in the interior of the base body (1) near the narrow end (3) of the dip spigot, in particular between the plates (9) for the longitudinal force absorption, a three-dimensional grid (6) is provided. An immersion peg according to claim 15, characterized in that a part of the lattice rods of the three-dimensional lattice (6) are arranged normal and another part parallel to the direction of the longitudinal axis (8) of the dipping peg. An immersion peg according to any one of claims 1 to 16, characterized in that outwardly facing engagement bolts (11) are provided at the wide end (2) of the immersion peg parallel to the longitudinal axis (8) of the immersion peg. An immersion peg according to any one of claims 1 to 17, characterized in that there is provided on the narrow end (3) of the immersion peg a releasably secured lifting plate (12) which is wider than the narrow end (3) of the immersion peg. An immersion peg according to any one of claims 1 to 18, characterized in that there is provided at the wide end (2) of the plunger a threaded portion (15) by means of which the plunger can be screwed firmly to the carriage box or bogie. 20. immersion peg according to one of claims 1 to 19, characterized in that the immersion pin is made by casting.