| 摘要 |
<p>The invention relates to clamping assemblies for use, for example, in clamping abutting end portions of, say, pipeline members. The assemblies are particularly useful in the clamping of insert valves in oil pipelines. The assembly comprises two clamping elements (36) adapted to encircle the pipeline members (2,4) in abutting relationship, support means (50) to support the elements (36) in a spaced-apart condition, said support means (50) comprising a mounting member adapted to be secured to one of the members to be clamped, at a location spaced from the abutable surface thereof, said mounting member (50) including a plurality of guide rods (52) projecting therefrom. Each clamping element (36) is slidably mounted upon respective guide rods for movement between the spaced-apart condition and a clamped condition and the guide rods (52) are provided with outer end portions including engaging portions adapted to engage firmly with respect to the clamping elements (36) when in their spaced apart condition, inner portions of the rods being narrower so as to be adapted to allow limited adjusting movement of the elements as they move towards the clamped condition.</p> |
