railfastening

As an indispensable part of the railway, the  Rail Plate Base Pad  plays an important role on the railway. If it falls off, which will influence the whole  Railway Fastening System  deeply. In the high-speed railway subgrade, the separation of the slab Rail Plate Base Pad will reduce the track strength. This situation means the stiffness and service life of the track will be reduced directly. It causes the rail plate base pad to crack and disconnects from the lug time. The pressure of the top surface of subgrade increases with the length of abscission. Meanwhile, the trend of increasing is becoming more and more obvious.

Bridge Bolt  means high strength bolt in general because of the difference and complexity of bridge construction. High strength bolt the baptism of twist is decided to bridge steel assembly quality and construction schedule key, through the control of high strength bolts into acceptance inspection, the torque construction method an d keeping inspection method, high strength bolt the pulling force to meet the design requirements, effectively control the high strength bolt the baptism of twist quality, ensure the smooth installation of steel bridge. We are professional  Rail Fastener , if you want to know more about our products, please contact us.

As the high strength bolt,  Bridge Bolt  connection is different according to the design requirements and the force transmission connection can be divided into friction type and bearing type connection, friction type high strength bolt is widely used in China in the form of friction type connection is the use of high strength bolts pretension, the plate layer connection between anti slide force to bear and transfer and the friction force, just be overcome, the panels have the relative sliding trend for the limit state of bearing capacity of the connection. As for high strength bolted steel bridges, how to control the construction of bridge bolts is the key to the erection of steel bridges.

The shapes of  Tension Clamp  type Ⅰ and Ⅱ are same, and there is also a  Rail Base Plate  beside each other. Tension Clamp type Ⅰ has two types like A and B, A type of elastic spring buckle singly has pressure 8 kN, stroke 9 mm, B-type elasticity of a single elastic buckle 9 kN, stroke 8 mm, The static stiffness of the pad is 90 ~ 120 kN / mm. Tension Clamp type Ⅱ single buckle has pressure 10 kN, stroke 10 mm, track under the static stiffness of 55 ~ 80,40 ~ 60 kN / mm (rail joints). Regular state iron are using Ⅱ type buckle fastener, while some local railway line is not so strict rules. Because the local railway is generally 50kg enough. The fastening strength of the type Ⅱ buckle fastener is higher.