Core support for integral sand core of bolster

Abstract

The invention discloses a core tray of an integral sand core of a swing bolster. The core tray comprises a bracket, wherein a supporting plate, which supports the middle of the sand core, is arranged in the middle of the bracket; supporting mechanisms for supporting both ends of the sand core are arranged at both ends of the bracket; the supporting mechanisms and the bracket can be connected by reciprocating motion in the length direction of the swing bolster. According to the structure, the supporting plate in the middle of the bracket is used for supporting the middle part of the integral sand core of the swing bolster, and the supporting mechanisms support both ends of the sand core. As the supporting mechanisms can reciprocate along the length direction of the swing bolster on the bracket, the core tray is high in universality, and can be suitable for cores of swing bolsters of various types and with different lengths. A core tray matched with each core of the swing bolster is not designed, so that the cost input is greatly saved.

Description

technical field [0001] The invention relates to the technical field of bogies, in particular to a core holder for an integral sand core of a bolster. Background technique [0002] Bolsters are an important part of railway freight car bogies. Bolsters are usually sand castings, that is, produced and cast in sand molds, so the dimensional accuracy of the sand core of the cast bolster directly affects the size of the bolster. [0003] In the prior art, in accordance with the requirements of the Ministry of Railways, in order to improve the quality of railway bolsters and reduce defects such as flashes and cracks caused by the use of split sand cores, a process plan for integral sand cores for bogie bolsters has been gradually realized. The integral sand core for bolster casting is used to construct the complex internal structure of bolster castings, mainly composed of molding sand, binder, core bone and chilled iron. The manufacturing process is as follows: firstly, the core ...

AI Technical Summary

Problems solved by technology

The development and trial production of each new product requires an independent design of a matching core support, resulting in a large workload in the design and manufacture of the core support for the bolster integral sand core 100' used in the manufacture of foundry bolsters

And, because a wide variety of core holders are relatively large in size, storing these core holders requires a large amount of inventory, further increasing cost input

[0010] Secondly, the core support in the prior art is made of wood structure, which has poor dimension guarantee ability and is prone to deformation. At the same time, it is easy to burn the core support when open flame operation is required (for example, when the surface of the sand core is painted with paint, it needs to be ignited and dried).

If each core support is made of metal, the initial cost input of each product will be greatly increased

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