Double anti-loosening fixed bolts for overall hanging string of railway catenary

Abstract

The invention discloses a double-looseness-preventing fixing bolt for a railway contact net dropper assembly. The fixing bolt comprises a hexagon slotted bolt and a pressure block combined part; the pressure block combined part comprises a hexagon nut, an I-shaped pressure block, a supporting check clamp and a U-shaped connection clamp; the I-shaped pressure block, the supporting check clamp and the U-shaped connection clamp are sequentially and fixedly connected; the U-shaped connection clamp is sleeved with the hexagon nut; the I-shaped pressure block, the supporting check clamp and the U-shaped connection clamp are installed in an axial open slot; the two ends of the supporting check clamp extend out of the side faces of the hexagon nut correspondingly; and when the hexagon nut abuts against the end face of the supporting check clamp, the U-shaped opening part of the U-shaped connection clamp is higher than the upper end face of the hexagon nut, and during use, the U-shaped opening side of the U-shaped connection clamp can be bent to abut against the upper end face of the hexagon nut. The fixing bolt is further characterized in that protrusions shaped like a Greek letter 'omega' are arranged in the positions, close to the U-shaped connection clamp, of the two sides of the supporting check clamp and are formed by bending, and the supporting check clamp is embedded into a groove of the I-shaped pressure block. The fixing bolt has the double-looseness-preventing function, and is good in looseness preventing effect, high in structure rigidity and reliable in connection.

Description

technical field [0001] The invention relates to a connecting bolt, in particular to an adjusting and fixing bolt used for integral suspension strings of a railway catenary. Background technique [0002] The adjusting fixing bolts for the overall hanging string of the railway catenary are used to fasten the hanging string of the railway catenary. The existing adjusting and fixing bolts for the overall hanging string of the railway catenary include hexagonal slotted bolts and pressing block assemblies; The block assembly includes an I-shaped pressure block, a support stop card, a U-shaped connection card, and a hexagonal nut. The support stop card is a strip-shaped component that runs through the axial opening groove of the hexagonal slotted bolt. When the overall hanging string of the railway catenary is used to adjust the fixing bolts, after the hexagonal nuts are tightened, the two ends of the supporting stoppers are pulled up and attached to the side of the hexagonal nuts...

AI Technical Summary

Problems solved by technology

The defect of this kind of adjusting and fixing bolts for the overall hanging string of railway catenary is that the hexagonal slotted bolts are provided with an axial opening groove extending from its end to the end face of the hexagonal head, which has poor rigidity and is easy to deform. It is a strip member, and the hexagon nut in the fastened state is easy to loosen after being stressed

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