A portable lift is provided. The portable lift includes a top frame assembly, a carriage frame, a base frame, and a hoist mechanism. The top frame assembly is secures top ends of a pair of stringers together. The base frame assembly secures bottom ends of the pair of stringers together forming the portable lift frame. The carriage frame includes a plurality of wheel assemblies each having a plurality of wheels. The plurality of wheels releasably retain to and slidably engage with a stringer of the pair of stringers. The hoist mechanism includes a motor, a spool rotatable by the motor, a pulley secured to the top frame assembly, and a hoist cable wrapped around the spool and running from the spool through the pulley and secured to the carriage frame.
1. A portable lift comprising:
a top frame assembly operable to secure top ends of a pair of stringers together;
a base frame assembly operable to secure bottom ends of the pair of stringers together;
a carriage frame comprising a back frame, a platform frame, and a plurality of wheel assemblies secured to the back frame, wherein each of the plurality of wheel assemblies comprise:
a front wheel rotatable about a front wheel axle disposed in between vertical posts of the back frame;
a first side wheel and a second side wheel each rotatable about a side wheel axle protruding from a rear side of the back frame and substantially perpendicular to the front wheel axle, wherein the front wheel is disposed in between the first side wheel and the second side wheel;
a wheel bracket protruding from the rear side of the back frame;
a rear wheel axle slidably engaged with the wheel bracket;
a rear wheel rotatable about the rear wheel axle; and
a locking mechanism, wherein
the wheel assembly comprises an engaged position comprising the rear wheel axle sliding away from the wheel bracket towards the front wheel and a disengaged position comprising the rear wheel axle sliding away from the front wheel and towards the wheel bracket, wherein the locking mechanism is spring biased to lock the rear wheel axle in the engaged position, preventing the rear wheel axle from sliding; and
a hoist mechanism comprising:
a motor;
a spool rotatable by the motor;
a pulley secured to the top frame assembly; and
a hoist cable wrapped around the spool and running from the spool through the pulley and secured to the carriage frame.
2. The portable lift of claim 1 , further comprising a retaining hook protruding from a top end of the back frame.
3. The portable lift of claim 1 , wherein the platform frame is pivotally attached to the back frame.
4. The portable lift of claim 3 , wherein the platform frame comprises an expanded position comprising the platform frame pivoted away from the back frame and substantially perpendicular with the back frame, and a retracted position comprising the platform pivoted towards the back frame.
5. The portable lift of claim 1 , wherein the motor is secured to the base frame assembly.
6. The portable lift of claim 1 , further comprising at least one angled foot secured to a bottom side of the base frame.
7. The portable lift of claim 1 , further comprising a safety stop mechanism comprising:
a lever arm pivotally attached to the top frame assembly;
a switch operatively connected to the motor; and
a safety cable attaching the lever arm and the switch together.