The utility model provides an improved photovoltaic clamp, including first clamping piece, second clamping piece, bolt
assembly, first clamping piece includes the first upper roof of C-shaped structure integrated moulding, first support plate, first clamping plate, second clamping piece includes the second upper roof of C-shaped structure integrated moulding, second support plate, second clamping plate, first clamping piece and second clamping piece form the clamping cavity and have second upper roof and top in first upper roof bottom surface after assembling, bolt
assembly includes polygonal bolt, second upper roof bottom surface is opposite and is provided with the first hook portion and second hook portion of the restriction polygonal bolt and turn, first hook portion includes first vertical limiting section and first hook, and first vertical limiting section and first hook form first and top step between, second hook portion includes second vertical limiting section and second hook, and second vertical limiting section and second hook form second and top step between. Improved photovoltaic clamp has the advantages of simple structure, convenient installation, low cost, strong applicability.