FIELD: mining.
SUBSTANCE: male hub assembly comprises a housing and a male hub tip disposed at the distal end of the housing, a compression ring disposed around the outside of the housing and made with the possibility of axial movement relative to the housing immediately after being actuated and a plurality of clamping jaws connected and laid between the compression ring and the tip of the male hub. Each clamping jaw is precompressed, whereby each clamping jaw is prone to bend radially outward, at that, when the compression ring is actuated, a plurality of clamping jaws moves radially outward from the first diameter to the second diameter that is larger than the first diameter.
EFFECT: reliability increase.
23 cl, 13 dwg
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