Abstract: A mounting device is fastened over various types of standing seams of a roof. The mounting device includes a mounting body, a wedge-like core and two bolts. The mounting body includes a slot extending therethrough with a trapezoidal cross-section, a first tapped hole and a second tapped hole, wherein the slot has an opening at a relatively short side of a pair of parallel sides of the trapezoidal cross-section. The wedge-like core is sandwiched between a pair of nonparallel sides of the slot. A first bolt is screwed into the first tapped hole and has an end in contact with the wedge-like core for securing a standing seam. A second bolt is screwed into the second tapped hole for securing a desired object on the roof.

Abstract: A photovoltaic module installation device is provided, which is used for installing a photovoltaic module on a roof. The photovoltaic module installation device includes a fixture clipped on the roof, a lower connection piece locked on the fixture, a first support frame disposed on the lower connection piece, an upper connection piece and a second support frame. The upper connection piece is fitted on the first support frame and is locked with the lower connection piece. The second support frame is perpendicularly fixed on the first support frame, and the photovoltaic module is fixed on the second support frame.

Abstract: A mounting device is fastened over various types of standing seams of a roof. The mounting device includes a mounting body, a wedge-like core and two bolts. The mounting body includes a slot extending therethrough with a trapezoidal cross-section, a first tapped hole and a second tapped hole, wherein the slot has an opening at a relatively short side of a pair of parallel sides of the trapezoidal cross-section. The wedge-like core is sandwiched between a pair of nonparallel sides of the slot. A first bolt is screwed into the first tapped hole and has an end in contact with the wedge-like core for securing a standing seam. A second bolt is screwed into the second tapped hole for securing a desired object on the roof.