Angle-adjustable smith machine

An angle-adjustable Smith machine, comprising:

• a base;
• an upper frame, located at a height from the base in a z direction, the upper frame including at least one slide slot bracket;
• two front poles, spaced apart from each other in an X direction, the two front poles extending in the Z direction, at least one of the front poles having a bottom end pivotally connected to the base and a top end coupled to the slide slot bracket;
• two rear poles, spaced apart from each other in the X direction, the two rear poles being located at a distance away from the two front poles in a Y direction, the two rear poles extending in the Z direction and being connected between the base and the upper frame, the X direction, the Y direction and the Z direction being perpendicular to one another;
• and
• at least one angle adjustment unit, disposed on the slide slot bracket, the angle adjustment unit being connected to the top end;
• wherein the angle adjustment unit is configured for driving the top end to move in the X direction and then to be secured, so that the bottom end of the front pole is pivoted in the X direction for the front pole to be adjusted at a predetermined angle.