SK564389A3 - Frog made of cast hard manganese steel - Google Patents

Abstract

In a crossing frog (1) with a crossing point (2) of cast hard manganese steel, in which a part of the wing rail (3) is cast onto the crossing point (2) in the running surface, the crossing frog (1) has webs (9) running transversely in the region of the sleepers, it being possible for the webs (9) to be supported directly on the sleepers or base plates, and the crossing frog (1) being supported on the sleepers solely via the webs (9), whereby a high precision of the position of the running edges and of the crossing point (2) can be achieved without expensive fitting work and with high stability and small dimensions of the crossing frog. <IMAGE>

Description

Technical field

The invention relates to a fused manganese steel frog consisting of a bed body on which a heart tip is formed, in the region of which the transition portion for contact with the wing rails is formed.

BACKGROUND OF THE INVENTION

Frogs with spikes of cast hard manganese steel are known by the joint casting of the wing rails in the transition region together with the feather tip which can be seated on the heel of the wing rails. Different embodiments of frogs of this type are also given by the second connection with the rails. which, for example, are screwed or welded together with the frog. DE 4 081 162 discloses a known hard manganese steel frog with partially poured wing rails which is screwed to the connecting rails. In this embodiment of the frog, a closed profile is selected for increased load in which the frog has a continuous treasure box. on the heel by wing rails to improve stabilization of the frog. The design of the continuous cash register allows at least partial support of the frog on the sleepers or on the continuous supports. Depending on the cylindrical tolerances, however, the wing rail can only be manufactured with insufficient accuracy, but this does not create sufficient bearing surface for the frog. The height of the tip of the frog is therefore still dependent on the rolling tolerances of the wing rail heel, i.e. the height of the flange. additional costly fitting work is required to settle the frog.

SUMMARY OF THE INVENTION

These drawbacks are largely eliminated by the casting of hard manganese steel, consisting of a bed body on which a frog point is formed, in the region of which the transition portion for contact with the wing rails is formed, which is based on the bed body transverse webs formed on its longitudinal axis in the region of the sleeper for abutting on the sleepers or base plates.

The main advantage of this embodiment is that the frog has high stability, small dimensions, low weight; and there is no need to use costly fitting work. Another advantage is that the frog ensures high accuracy of the position of the running edges and the frog point because the height of the frog point can be adjusted precisely. By supporting the frog bed body exclusively on the sleepers through the webs or base plates, the adjusted height position is maintained independently. on rolling tolerances of the wing rail foot. In this case, the webs provide a statically advantageous design over the open cross-sections in which a closed cross-section with a suitable force connection is achieved.

According to a preferred embodiment, a discontinuous part is formed on the loading body in the region of the screw connection of the loading aircraft to the wing rails.

The advantage of this embodiment is that by carefully ensuring the height position of the frog tip, compliance with the height tolerances of the wing rails can be achieved.

According to a further preferred embodiment, the loading body is connected to the connecting rails by a non-detachable connection.

The advantage of this embodiment is that the risk of breakage that may occur in the region of the screw connection between the connecting rails and the flange loading body is eliminated. This welding leads simultaneously to a considerable reduction in the construction length and thus to a further reduction in weight. Since the casting produced is relatively small, it can be produced by casting with high quality.

According to a further preferred embodiment, the bed body which is releasably connected to the non-releasably connected connecting rails is shorter than the bed body which is releasably connected to the separate connecting rails.

An advantage of this embodiment is that the preferred method is to further shorten the frog and reduce its weight.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a plan view of a first embodiment of the frog, FIG. 2 shows a longitudinal section through the frog along line II-II in FIG. 1, FIG. 3 is a cross-sectional view of the frog along line III-III of FIG. 1; FIG. 4 is a cross-sectional view of the frog along line IV-IV of FIG. 1; Fig. 5 is a cross-section of the frog along line V-V of Fig. 1; 7 is a cross-sectional view of the frog along line VII-VII of FIG. 1, FIG. 8 cross section (

frog along line VIII - VIII of FIG. 1, FIG. 9 is a cross section of the frog along line IX-IX of FIG. 1, FIG. 10 is a plan view of a second embodiment of the frog, and FIG. 11 is a cross-sectional view along the line XI-XI of FIG.

DETAILED DESCRIPTION OF THE INVENTION

In FIG. 1 shows a first exemplary embodiment of a cast manganese steel frog 1 consisting of a bed body on which a frog 2 is formed, in its region a transition portion 3 for contact with the wing rails 4 is formed, which are made of standard rail profiles quality, ie of steel generally used for rails. Thus, the wing rails 4 do not carry the frog body 1, which is more or less immediately and independently supported on the wing rails 4, whereby the exact fitting of the frog 1 can be

optionally used to maintain accurate placement of the wing rails 4. The frog bed body 1 is permanently connected at its outer end 5, e.g. This welding results in an uninterrupted travel of the trailing edge, whereby the frog 1, on the one hand, requires less space to connect to the connecting rails 6 and, on the other hand, is shorter, lighter and less expensive. The frog bed body 1 and the wing rails 4 are supported by sleepers 11, apparently by means of supports.

FIG. 2, it is evident that the frog bed body 1 is formed of a hollow profile. In the loading body of the frog 1, transversely to its longitudinal axis - formed in the region of the sleepers 7 of the web 9, to reach the loading body of the frog 1 on the sleepers 7 or the base plate. Transverse ribs 10 are formed in the frog body 1 to increase the stability of the frog 1. In the areas of the webs 9 and the screw connection of the frog body 1 to the wing rails, the frog body 1 is formed with spacers 8 'or corresponding projections in which transverse bores 11 are formed in the wing rails 4 for the screw connections of the frog bed body 1 and the wing rails 4. The spacers 8 have a partially adapted shape in the region of the screw connection substantially corresponding to the profile of the wing rails 4 in this region. (Figures 7 and 8).

In FIG. Figures 3 to 9 show cross sections made in different regions of the frog 1, from which it is apparent that the wing rails 4 have a substantially conventional rail profile. The wing rails 4 have in their lower part a foot 12 for seating the frog body 1, and therefore it is sufficient to treat the frog body 1 only in this area of fitting. The frog bed body 1 has an open cross-section. In the frog body 1, partitions 13 are formed in the vertical direction, which are not supported on the foot 12 of the wing rails 4, so that a gap is formed between the lower ends of the partitions 13 and the feet 12. The frog bed body 1 is therefore supported on the sleepers 7 only by means of the uprights. Thus, the height of the frog point 2 and the height of the wing rails 4 can be precisely adjusted and thus can be adjusted.

avoiding the costly fitting work normally carried out when the crossbars 13 of the frog 1 rest on the feet 12 of the wing rails 4, which in addition are produced with great tolerances. The crossbars 13 of the frog body 1 are spaced from the cross-member of the wing rail 4 and are formed in those cross-sectional areas of the frog body 1 in which no screw connection is formed to connect the frog 1 and the wing rails 4. 1, one trough 15 (FIG. 4) or two troughs 15 (FIGS. 5 to 8) is provided.

In FIG. 10 and 11 show a second embodiment of the frog 1, which is almost identical to the frog 1 of FIG. 1, only being shorter than the frog 1 of FIG. 1. A frog tip 2 is likewise formed on the hard manganese steel body of the frog 1. »An intermediate part 3 for contacting the wing rails 4 is also formed in its region 4. The frog body 1 is welded to each other at its outer end 5 The connecting rails 6, which later on at a distance from the outer end 5 of the frog body 1, pass into two separate connecting rails 6. This welding of the frog body 1 with the connecting rails 6 makes it possible to significantly shorten the design of the frog body 1. 1 with the wing rails 4 of a conventional rail profile, the spacer parts 8 are again formed on the frog body 1. In the second embodiment of the frog 1 according to FIG. 10 and 11, the legs 9 are formed in the region of the sleeper 7 in the region of the sleeper 7, by means of which the frog 1 is located only on the sleepers 7 and not on the foot 12 of the wing rails 4. with respect to the running edge of the wing rails 4. · ·;

The longitudinal stamps according to lines III-III to VII-VII of FIG. 10 are also shown in FIG. 3 to 7, i. that the embodiment of FIG. 3

- y;

7 to 7 also apply to the second embodiment of the frog 1 of FIG. 10 and 11.

The very short embodiment of the frog bed body 1 of FIGS. 10 and 11 greatly reduces the weight of the frog 1, which may be

made by casting in very good quality.

By partially casting the bedding together with the spike 2 and the transition portion 2, it is possible to dispense with the wing rails of the hard manganese steel profile, so that the wing rails 4 can be formed, as already mentioned above, essentially with the conventional rail profile of standard steel. .

Claims (4)

PATENT CLAIMS 1. Cast manganese steel frog consisting of a bed body on which a spike is formed in the region in which the wing rail contact portion is formed, characterized in that the bed body is transverse to its longitudinal axis in the region of of the sleepers (7) formed by the webs (9) for bearing on the sleepers (7) or the base plates. Frog according to claim 1, characterized in that a spacer element (8) is formed on the bed body in the region of the screw connection of the bed body with the wing rails (4). Frog according to either of Claims 1 and 2, characterized in that the bed body is connected to the connecting jaws (6) with a non-detachable connection. T A frog according to any one of claims 1 to 3, characterized in that the bed body which is permanently connected to the non-detachably connected connecting rails (6) is shorter than the bed body which is non-detachably connected to the separate connecting rails (6). 6).