Combined insulator gold tool and method for manufacturing the same

Abstract

The invention discloses a piece of combined insulator hardware and a production method thereof. A standard joint of the combined insulator hardware and a connection bar adopt a split type structure and are fixed together by friction welding. The connection bar and a seal-adhesive seat of the insulator adopt an integrated structure or a split type structure; the connection bar and the seal-adhesive seat are fixed together by friction welding if the connection bar and the seal-adhesive seat adopt a split type structure. The standard joint is a Y-shaped double-ear or a ball head or a ball socket or a U-shaped double-ear or a straight line shaped single ear or a hanging ring-shaped single ear. The production method is that: according to the application characteristics of the specific parts of the hardware, a piece of hardware is divided into two or three parts and respectively produced to satisfy different strength and hardness requirements; then all the parts are fixedly welded together by friction welding technique. By adopting the invention, industrialization of the production of the insulator hardware can be easily realized, product quality and qualified rate in production are enhanced, the working efficiency is improved, the management difficulty in production is reduced and good social and economical benefits can be achieved.

Description

1. Technical field: [0001] The invention relates to an insulator fitting used in high-voltage power transmission and transformation lines, electrified railways and locomotive locomotives, in particular to a combined insulator fitting and a manufacturing method thereof. 2. Background technology: [0002] Fittings are a general term for all metal fittings used in high-voltage power transmission and transformation lines, electrified railway catenary and other systems. Insulator fittings refer to metal parts used on insulators. Figure 1 shows a complete insulator, which consists of three parts: the middle insulating rod (cement or glass fiber), the outer insulating shed (glass or silicon rubber or ceramics), and the connecting hardware at both ends. [0003] For power transmission and transformation lines, the role of insulators is to pull the wires, and the second is to insulate the high-voltage wires from the iron tower. The first function is the pull wire, which is to insul...

AI Technical Summary

Problems solved by technology

[0012] The advantage of using the casting method to make blanks is that it can produce blanks with relatively complex shapes, especially those with complex inner cavities; the disadvantages are: (1) Due to the characteristics of casting itself, the rough appearance of the blanks is rough, and the interior is unavoidable. There are pores, trachoma, sand inclusions, cracks, and a certain reject rate during machining

(2) It is not easy to ensure the consistency of the hardness of all parts. This is a big problem when the crimp connection is used between the fittings and the insulator, resulting in an unstable connection, so that the tensile strength of the entire insulator reduce, resulting in a considerable amount of defective products

(3) If the size is slightly different, different molds must be used to make it. The number of developed molds is large and the cost is high

The disadvantages are: (1) The technology is difficult, and the shape of the metal parts is slightly complicated, so this method cannot be used to make blanks; (2) The mold investment is large, the service life is short, and the cost is high

(3) Fatal defects such as forging cracks in the forging process cannot be completely avoided

(4) It cannot meet the different hardness requirements and hardness uniformity requirements of metal fittings

[0014] The method of directly processing round bar blanks with machine tools has the advantage that it can ensure the uniformity of hardness of the metal fittings, and there are no shortcomings in casting and forging. The reliability of internal quality is higher than that of the above two methods, but its shortcomings are also obvious. , that is, because the shape of the fittings changes greatly in the diameter direction, most of the materials have to be processed, the utilization rate of the materials is very low, and the processing efficiency is also very low, the cost is high, and some parts with complex inner cavity shapes are difficult to process.

Images