Stair Climber with Adjustable Slope

A stair climber with an adjustable slope, comprising:

• an inclined support frame (1) and a pedal frame assembly (2), wherein lower ends of both the support frame (1) and the pedal frame assembly (2) are used for support on a ground, a sliding sleeve (21) is fixedly arranged at an upper end of the pedal frame assembly (2), the sliding sleeve (21) slidably sleeves the support frame (1), a positioning mechanism is arranged between the sliding sleeve (21) and the support frame (1), the positioning mechanism comprises a first positioning hole (101), a second positioning hole (211), and a positioning pin (3), the first positioning hole (101) is formed in the support frame (1), a plurality of first positioning holes (101) are provided and distributed in a length direction of the support frame (1), the second positioning hole (211) is formed in the sliding sleeve (21), and the positioning pin (3) is detachably connected to the first positioning hole (101);
• and during positioning, the second positioning hole (211) is aligned with one of the first positioning holes (101), and the positioning pin (3) penetrates through the second positioning hole (211) and is correspondingly connected to the aligned first positioning hole (101).