On the railway track, the cuboid objects laid between the two rails are called sleepers, also called rail sleepers, but the materials used are not only wood, so it is more scientific to call sleepers. Sleeper is a common industrial and mining equipment of track system, and it is also a very important rail accessory. It is mostly made of concrete and wood, which is used to fix the position of the rail so that the weight of the rail can be evenly distributed. rail sleeper design
As for the historical development of sleepers, many older readers should have witnessed it with their own eyes. The sleepers were originally made of wood, so they were called sleepers and later made of cement. According to statistics, during the peak period of timber sleeper use, more than 3 billion sleepers were laid around the world, and most of them were pine. Wood has good elasticity and insulation, little influence by temperature change of surrounding medium, light weight, easy processing and replacement on the circuit, and sufficient displacement resistance. rail sleeper design
However, with the enhancement of people's awareness of environmental protection and the development of technology, at the beginning of last century, some countries began to produce steel sleepers and reinforced concrete sleepers to replace sleepers. However, the steel pillow has not been popularized because of its excessive metal consumption, high cost and heavy volume. Since the 1950s, cement sleepers have become popular. If it is a common rail, the sleepers need to be replaced once every ten years without any problems. According to the sleeper track of the current railway network, more than 10 million old sleepers will be eliminated every year. This is an astonishing number. What makes everyone curious is, where are these huge old sleepers going? rail sleeper design
It is understood that many old sleepers have
been used as matches and some wood has been sold at very low prices. In fact, these sleepers eliminated from the
railway still have great value. Let's take a look at them together-under the
careful creation of experts, what new patterns will be changed from the old
sleepers:
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