Abstract：Abstract：Research purposes： Now it has a balance weight built-in anchor mode which is used in domestic urban rail transit. But the installation precision and adjustment accuracy are demanding in the construction site, and this kind of anchor mode's transmission efficiency and reliability has a little deviation to ideal situation. For this situation, this article puts forward to use all built-in anchor mode overhead contact system to solve the problem, places a part of the ratchet in mast to meet the function, which have greatly improved the effect of the landscape.
Research conclusions：Through the research, the following conclusions can be drawn: (1) All built-in anchor mode is a feasible overhead contact system anchor way in urban rail transit. (2) Through the comparison of all built-in anchor way and balance weight built-in anchor mode, the cost of built-in ratchet wheel is slightly higher, and the other parts are basically equal. (3) All built-in anchor mode's installation is more convenient. (4) Further understand the technical function of all built-in anchor mode, mast the installation technology, operation and maintenance experience of all built-in anchor mode, improve the effect of the landscape and accumulate engineering experience for domestic rail transit with new all built-in anchor mode. (5)The research result can be applied in the field of urban rail transit.
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