Seamless combined frog

Abstract

The invention relates to a seamless combined frog which comprises a frog core, a wing rail and a frog heel rail, a frog core front section L1 and a frog core rear section L2 are provided with frog core front spacing iron and frog core rear spacing iron respectively, the frog core front spacing iron and the frog core rear spacing iron match the wing rail and the frog heel rail, and fastening and installation are achieved through a bolt pair. Compared with the prior art, the seamless combined frog has the advantages that firstly, the matching length of the wing rail and the fork core is shorter and is about 1 / 4 of the matching length of the prior art, and middle spacing iron and inner side clamping plates are omitted, so that the seamless combined frog is simple in structure and suitable for mass production; and secondly, main body structural components in the background technology are a point rail, the wing rail and a welding section wing rail, the center rail and the welding section wing rail are made of alloy steel, the main body components are easy-to-damage components or easy-to-lose components, the main body structural component provided by the invention is the frog core, and the frog core can be made of various materials or processes, so that the material adaptability is wider; if the main body structure loses efficacy in the service process, online interchange assembly can be achieved, the manufacturing cost is low, and the maintenance cost is low.

Description

technical field [0001] The invention relates to a method that not only greatly shortens the matching length of the wing rail of the fork center, reduces the amount of the wing rail, reduces the difficulty of component manufacturing, improves the manufacturing accuracy, significantly reduces the difficulty of assembling the wing rail and the fork center, but also realizes seamless or effective lines. The invention relates to a seamless composite frog connected by seams, which belongs to the field of seamless frog manufacturing. Background technique [0002] 1. CN 201915302 U. Name "a new type of welded wing-rail combination frog for railway tracks", including wing rails on both sides and a core rail between the wing rails. The wing rails are composed of ordinary steel rail sections at both ends and the middle The alloy steel rail section is welded with two welds; it is characterized in that a piece of reinforced protection interval iron is arranged between the core rail and t...

AI Technical Summary

Problems solved by technology

The existing problems are: (1) Figure 12 One of the wing rails and the core rail has a long matching length, and the rear end (end) of the wing rail has exceeded the section of the core rail by 50mm. The amount of the wing rail and the matching range between the wing rail and the core rail are relatively large. Therefore, it is difficult to manufacture in actual production In addition, because the wing rail adopts the same rail type and the rails of different materials are welded in three sections, the requirements for welding process and welding quality are extremely high, and the promotion is difficult. There are many parts, assembly is difficult, and the manufacturing cost is high. And can not realize the heart rail interchange assembly

(2) Figure 12 One of the wing rails is welded in three sections because the wing rails are of the same type and the rails of different materials are welded in three sections. There are four sections of welds on the two wing rails of a group of frogs. Increase the maintenance workload of combined frogs

[0003] 2. Traditional combined frog structure: (1) The combined frog is mainly composed of fork center, wing rail, and fork heel rail. It is fixed and installed with bolt pairs, two kinds of rail washers, and spacer iron bolts. The symmetrical structure, such as figure 1 shown

The existing problems: the whole fork center is made of cast high manganese steel, forged high manganese steel or alloy steel, the matching length of the wing rail and the fork center is relatively long, and there are many parts, which increases the manufacturing cost, and it is difficult to realize online or online Lower interchangeable assembly

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