A main clamping device for installation of tunnel construction bow member

The utility model discloses a main clamping device for installation of tunnel construction bow member, it includes roating seat, clamping head base, rubber support backplate, steel bow member grip block, centre gripping connecting rod and vertical rotary supporting device, bolt and vertical rotary supporting device fixed connection for the roating seat, with the square fixed connection that manages between roating seat and the clamping head base, one side of clamping head base is the rubber support backplate, and the opposite side articulates has the centre gripping connecting rod, and the expansion end of centre gripping connecting rod articulates there is steel bow member grip block, vertical rotary supporting device fixed connection is on construction platform's base. It is can the 180rotatory main clamping device of steel bow members installation, has realized the first festival (interlude) but steel bow member equal automatic pick under any operating mode, simultaneously can safebalanced centre gripping,