Bus duct adjustable support

An adjustable support for a bus duct belongs to the technical field of building electrical engineering, and is characterized in that the bus duct is connected with a U-shaped steel clamp and a harness cord suspender through bolts, the lower end part of the harness cord suspender is welded with an end socket nut, a protective short tube is arranged above the nut, a spring is arranged in the short tube, and a harness cord screw rod penetrates into the U-shaped clamp and then is fixed on the U-shaped clamp. A nut and a gasket are additionally arranged at the upper part of the clamp for fixing; the U-shaped clamp is formed by bending a steel plate, an upper row of bolt holes and a lower row of bolt holes are reserved in vertical side hanging plates on the two sides, a hole is reserved in the upper plane, the holes in the upper portions of the side hanging plates are used for penetration of counter-drawing lead screws, the holes in the lower portions are used for penetration of lead screws on the side edges of a b