Bracket with adjustable roller spacing

The utility model relates to a support with an adjustable idler wheel distance. The device comprises a bracket seat, an adjusting lead screw is arranged in the support base. A hydraulic locking deviceis arranged on the right side of the adjusting lead screw. A stop block is arranged in the middle of the adjusting lead screw; threads of the adjusting lead screws on the two sides of the stop blockare forward rotation and reverse rotation respectively. A limiting switch is arranged on the stop block, a moving nut is arranged on the adjusting lead screw, a moving frame is arranged on the upper portion of the moving nut, a roller is arranged on the moving frame, a speed reducer is arranged on one side of the moving frame, a speed adjusting motor is arranged on the speed reducer and connectedwith the roller through the speed reducer, an adjusting base is arranged on the lower portion of the support base, and a controller is arranged on one side of the support base. The moving frame is driven to move inwards or outw