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Making process of binaural connector for contact network

A manufacturing method and connector technology, which is applied in the manufacturing field of steel double-ear connectors, can solve problems such as difficulty in ensuring internal quality, low process yield, and impact on reliability, so as to reduce the risk of dust pollution and silicosis , smooth surface, easy to automatically control the effect

Inactive Publication Date: 2008-12-17
BEIJING JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single weight of the double ear connector is less than 1kg, the wall thickness of the main body is only 8mm, and the size tolerance is 0.5mm, making it difficult to manufacture
Although precision casting can guarantee dimensional accuracy and surface quality, this method is difficult to guarantee internal quality, and the process yield is low. During the inspection, it is often found that there are more than three levels of shrinkage, which affects the reliability of use and is even scrapped.

Method used

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  • Making process of binaural connector for contact network
  • Making process of binaural connector for contact network
  • Making process of binaural connector for contact network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Firstly, the manufacturing mold used to realize the method is introduced.

[0043] The mold in this invention includes six parts: upper mold, lower mold, punch, feeding device, side pumping device and mold temperature regulating device, see the attached Figure 3-6 . in figure 1 Parts diagram of the two-ear connector; image 3 , Figure 4 , Figure 5 , Image 6 Several views of the mold are used to better describe the manufacturing method of the catenary double lug connector.

[0044] The upper mold comprises two parts, the upper mold body 5 and the upper mold fixing plate 3 . There are 4 cavities with the same shape and size on the upper mold body 5, which form the upper half of the double ear connector. The shape is the same as that of the upper half of the double ear connector, and the dimensions in each direction are corresponding The size of the part is 1.3% larger to compensate for the size reduction caused by cooling shrinkage. A cylindrical boss 14 with ...

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Abstract

The making process of binaural connector for contact network includes the following steps: separating the upper mold from the lower mold, inserting the side drawn mold core with side drawing oil cylinder, running the upper punch with the lower extruding cylinder to the set position, painting the mold and the mold core with paint and pre-heating, pouring steel molt, closing the upper mold and the lower mold hydraulically and maintaining pressure, extruding the liquid metal for flowing into the mold cavity with the lower extruding cylinder for pressured solidification and feeding of the metal liquid, relieving the cylinders, drawing out mold core with the side cylinder and demolding, and post-treating the workpiece.

Description

technical field [0001] The invention relates to a method for manufacturing a double-ear connector for an electrified railway catenary, which is suitable for the manufacture of a steel double-ear connector. technical background [0002] With the increase of train speed, the quality and reliability requirements of catenary components are getting higher and higher. Double lug connector is a commonly used catenary part in electrified railways. Its function is to connect two single ring parts with two flat double lugs at one end and two round double lugs at the other end through a bolt and a pin respectively. Together, the flat ears are at 90 degrees to the round ears, and the distance between the ears is adapted to the ring thickness of the two single-ring parts to be connected. The industry standard TB / T2075.54-2002 of the Ministry of Railways of China stipulates the type, structure, manufacturing process, inspection rules and performance requirements of the double lug connect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D18/02
Inventor 邢书明孙永忠鲍培玮郭文龙王鹏邢文斌李楠王磊
Owner BEIJING JIAOTONG UNIV
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