U molded lines presss from both sides street sign indicating number

U molded lines presss from both sides street sign indicating number includes the support and installs at least one trapping mechanism on the support, trapping mechanism includes that porcelain is commonplace, splint and two at least U types press from both sides, the U type presss from both sides including pressing from both sides line portion and check lock lever, the U type press from both sides parallel arrangement in the commonplace both sides of porcelain and its check lock lever respectively through locking mechanism and splint swing joint, the commonplace one side and splint butt of porcelain, the concave surface cooperation forms the wire passing channel who is used for the cable to pass in the double -layered line portion of pressing from both sides with each U type to the side of the indent of opposite side, can adjust the check lock lever through locking mechanism and move in locking the hole to the size of adjusting wire passing channel makes trapping mechanism loosen or the tight cable of clamp,