Mechanical type lifting shifter

A mechanical type lifting shifter arranged below a wheelchair body, comprising:

• a bottom supporting assembly, arranged below the wheelchair body, comprising a pair of oppositely arranged supporting members, and gear rack columns vertically arranged respectively on the supporting members;
• a movable upper supporting assembly, comprising a pair of movable supporting members;
• the movable supporting members slidably sleeve the gear rack columns respectively;
• a gear roller assembly, comprising a rotating shaft and a pair of lifting gears respectively arranged on two end portions of the rotating shaft;
• two ends of the rotating shaft are fixedly connected to and supporting the pair of movable supporting members respectively;
• the lifting gears 22 are engageably connected to the gear rack columns respectively;
• a pedal transmission assembly, arranged on the rotating shaft and rotatably connected to the rotating shaft to achieve motion transmission;
• a pedal clutch assembly, connected to the pedal transmission assembly to switch a clockwise and anti-clockwise rotational transmission between the pedal transmission assembly and the rotating shaft.