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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, wherei

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.

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1. A mounting device to be fastened over various types of standing seams of a roof, the mounting device comprising: a mounting body comprising a slot having a wedge-like cross-section extending therethrough, a first tapped hole and a second tapped hole, wherein the slot has an opening at a relativel

1. A mounting device to be fastened over various types of standing seams of a roof, the mounting device comprising: a mounting body comprising a slot having a wedge-like cross-section extending therethrough, 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 wedge-like cross-section;a wedge-like core being sandwiched between a pair of nonparallel sides of the slot;a first bolt being screwed into the first tapped hole and has an end in contact with the wedge-like core for securing a standing seam; anda second bolt being screwed into the second tapped hole for securing an desired object on the roof. 2. The mounting device of claim 1, wherein the first bolt comprises a hexagon head bolt or a hexagon socket bolt. 3. The mounting device of claim 1, wherein the second bolt comprises a hexagon head bolt or a hexagon socket bolt. 4. The mounting device of claim 1, wherein the mounting body comprises a wedge-like cross-section. 5. A roof connection device comprising: a connection beam; anda plurality of mounting devices for fastening the connection beam on a roof, each of the mounting devices comprises:a mounting body comprising a slot having a wedge-like cross-section extending therethrough, 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 wedge-like cross-section;a wedge-like core being sandwiched between a pair of nonparallel sides of the slot;a first bolt being screwed into the first tapped hole and has an end in contact with the wedge-like core for securing a standing seam of the roof; anda second bolt being screwed into the second tapped hole for securing the connection beam on the roof. 6. The roof connection device of claim 5, wherein the first bolt comprises a hexagon head bolt or a hexagon socket bolt. 7. The roof connection device of claim 5, wherein the second bolt comprises a hexagon head bolt or a hexagon socket bolt. 8. The roof connection device of claim 5, wherein the mounting body comprises a wedge-like cross-section. 9. The roof connection device of claim 5, wherein the mounting body comprises metal, plastics, ceramics, glass-reinforced plastics, bakelite, nylon or ebonite. 10. The roof connection device of claim 5, wherein the wedge-like core comprises metal, plastics, ceramics, glass-reinforced plastics, bakelite, nylon or ebonite.