SK279283B6 - Frog made of cast hard manganese steel - Google Patents

Abstract

The frog (1) consists of a loading body with a crossing point (2) formed thereupon, in which a part (3) abutting wing rails (4) is cast. The loading body has webs (9), running transversally to the longitudinal axis thereof, in the area of sleepers (7) to be abutted on the sleepers (7) or base plates. In the area of a bolted joint connecting the loading body with the wing rails (4), there is a spreader (8). The loading body is connected to attaching rails (6) with a fixed joint. The loading body being inseparably connected with mutually inseparable rails (6) is shorter than the loading body which is inseparably connected with individual attaching rails (6).

Description

Technical field

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

BACKGROUND OF THE INVENTION

Frogs with spikes of cast hard manganese steel are known by the joint casting of the wing rails in the passage area together with the frog tip which can be seated on the wing rail base. Different embodiments of frogs of this type are also given by the kind of connection with the connecting rails which, for example, are screwed or welded together with the frogs. DE 4 081 162 discloses a known hard manganese steel frog with partly cast 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 base plate. The frog is supported on the heel by wing rails to improve frog stabilization. The design of the continuous base plate allows at least partial support of the frog on sleepers or on the continuous base plates. 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 foot of the wing rail, ie. additional costly fitting work must be carried out after the frog has settled.

SUMMARY OF THE INVENTION

These drawbacks are largely eliminated by a frog made of cast hard manganese steel, consisting of a bed body on which a frog point is formed, in the region of which the passage 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 to engage the sleepers or base plates.

The main advantage of this embodiment is that the frog has high stability, small dimensions, low weight and does not require expensive fitting work. A further advantage is that the frog ensures high accuracy of the position of the running edges and the frog tip, because the height position of the frog tip can be precisely adjusted. By supporting the frog bed body on the sleepers solely over the webs or bases, the set height position is maintained independently of the rolling tolerances of the sash 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 obtained.

According to a preferred embodiment, a strut is formed on the bed body in the region of the bolt connection of the bed body to the wing rails.

The advantage of this embodiment is that by carefully securing 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. At the same time, this welding leads 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 loading body is releasably connected to the interconnectingly connected connecting rails, shorter than the loading body which is releasably connected to the separate connecting rails.

An advantage of this embodiment is that a further shortening of the frog and a reduction in its weight are achieved in a preferred manner.

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 is a longitudinal section through the frog along line II-II of FIG. 1, FIG. 3 is a cross-sectional view of the frog along line III-III of FIG. 1, FIG. 4 shows a cross section of the frog along the line

IV-IV of FIG. 1, FIG. 5 shows a cross section of the frog along the line

V-V of FIG. 1, FIG. 6 shows a cross section of the frog along the line

VI-VI of FIG. 1, FIG. 7 shows a cross section of the frog along the line

VII-VII of FIG. 1, FIG. 8 shows a cross section of the frog along the line

VIII-VIII of FIG. 1, FIG. 9 is a cross-sectional view along the 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. 10th

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 passage portion 3 for contact with the wing rails 4 is formed, which are made of standard rail profiles quality, t. j. of steel, which is generally used for rails. Thus, the wing rails 4 do not support the frog bed body 1, which is more or less immediately and independently supported on the wing rails 4, whereby the precise fitting of the frog 1 can optionally be used to maintain the exact positioning of the frog rails 4 on its flanks. the outer end 5 is releasably connected, e.g. This welding results in an uninterrupted travel of the leading edge, whereby the frog 1, on the one hand, requires less space than the screw connection for connecting to the 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 7, 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, a web 9 is formed transversely to its longitudinal axis in the region of the sleepers 7 in order to reach the loading body of the frog 1 to 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 parts 1 or corresponding projections are formed on the frog body 1. In the wing rails 4, transverse holes 14 are formed for 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 formed in different regions of the frog 1, from which it is clear that the wing rails 4 have a substantially conventional rail profile. The wing rails 4 have a foot 12 in their lower part for abutment of the frog bed body 1, and therefore it is sufficient to treat the frog body 1 only in this abutment region. The frog bed body 1 has an open cross-section. Crossbars 13 are formed in the frog body substantially in the vertical direction and are not supported on the foot 12 of the wing rails 4, so that a gap is formed between the lower ends of the crossbars 13 and the feet 12. The frog bed body 1 is therefore supported on the sleepers 7 only by means of the webs 9. Thus, the height of the frog point 2 and the height of the wing rails 4 can be precisely adjusted and thus costly fitting work normally performed rails 4, which are additionally produced with large 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. 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, it is only made shorter than the frog 1 of FIG. 1. A frog tip 2 is also formed on the hard manganese steel frog bed body 1, and in its region there is also a through portion 3 for contact with the wing rails 4. The frog box body is welded at its outer end 5 with the welded connecting rails 6 which, at a distance from the outer end 5 of the frog body 1, pass into two separate connecting rails 6. By welding of the frog body 1 with the connecting rails 6, the design of the frog body 1 is considerably shortened. The spacers 8 are again formed on the loading body of the frog 1 by means of the wing rails 4 of a conventional rail profile. In the second embodiment of the frog 1 of FIG. 10 and 11, the legs 9 are formed on the bed body 1 in the region of 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, thereby achieving careful positioning of the frog 2 and course of running edge of wing rails 4.

The longitudinal sections according to lines III-III to VII-VII of FIG. 10 are also shown in FIG. 3 to 7, i.e. the embodiment of FIG. 3 to 7 also apply to the second embodiment of the frog 1 of FIG. 10 and 11.

A very short embodiment of the frog bed body 1 of FIG. 10 and 11 significantly reduces the weight of the frog 1, which can be made by casting in very good quality.

By partially co-casting the bedding together with the frog tip 2 and the lead-through portion 3, 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, substantially with the conventional rail profile of standard steel.

Claims (4)

1. Cast steel of manganese steel, consisting of a bed body on which a spike is formed, in the region of which the wing rail contact portion is formed, characterized in that on the bed body they are transverse to its longitudinal axis v the sleeper regions (7) formed by the webs (9) for engaging 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 bolt connection of the bed body to the wing rails (4). Frog according to either of Claims 1 and 2, characterized in that the bed body is connected to the connecting rails (6) with a non-detachable connection. A frog according to any one of claims 1 to 3, characterized in that the bed body which is releasably connected to the non-releasably connected connecting rails (6) is shorter than the bed body which is releasably connected to the individual connecting rails (6).