The concept of building fastener and use – Di Ethylene Glycol – china Calcium Ch
Anti-sliding style of construction machinery spare parts belonging to the field of fasteners. Construction fastener consists of two sub-fastener, each sub-fastening fastener Xiaoduan the next section with live bolt connections, and the big end and with Huokou thrust surface on the fastener to connect the two sub-fastener rivet connection between the grind and to rotate at any angle.
Construction Fastener has substantive features and notable progress, so that fasteners to reduce parts count, reduce costs, but also because their material is greater than the thickness of the hollow rivet flange thickness, it increased the tensile strength, anti-torque stiffness greatly improved with the compared to traditional building fasteners, more safe, reliable, and the structural strength of fasteners in this building much better than traditional building fasteners.
Domestic production of commonly used fasteners are cast iron, its mechanical properties should follow the “Steel Scaffolding Fasteners” (GB15831-2006) material not less than KT330-08. The fastener varieties currently on the market was mixed, the quality varies, and some manufacturers the use of gray cast iron, ground to produce fastener channel, its mechanical properties are not difficult to meet the requirements of production in accordance with national standards.
Fasteners connecting the rail and the sleeper in the middle connecting parts. Its role is to be fixed to the sleepers on the rail to maintain gauge and prevent the rail relative to the longitudinal and lateral movement sleeper. In the concrete sleeper track, due to less flexibility of concrete sleepers, fastening a need for sufficient flexibility.
Fasteners must have sufficient strength, durability, and a certain degree of flexibility and effective resolution to maintain a reliable rail link between and the sleeper. In addition, the fastening system also requires fewer parts, simple installation, easy removal.
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