Mechanical Lifting and Pulling Device with Stabilizing Base, Adjustable Clamping Mechanism, and Integrated Pulley System

A motorized lifting/pulling device comprising:

• a base frame including a base plate having a ground-contacting traction surface;
• an electric motor;
• a motorized screw lifting assembly driven by said electric motor and comprising a rotatable lead screw and a traveling nut constrained for linear motion along a guide, said traveling nut being operatively coupled to apply a lifting or pulling force to an object;
• a clamping assembly mounted forward on said base frame and comprising a pair of opposed jaws movable between open and closed positions to grip said object, said clamping assembly further including:
• (i) a jaw actuator operatively coupled to said pair of opposed jaws;
• and
• (ii) a mechanical quick-release cam lever that opens said pair of opposed jaws independently of electrical power;
• a controller operatively coupled to said electric motor, said jaw actuator, and a user interface, said controller being configured to execute a pull cycle in which said controller:
• (i) commands said jaw actuator to close said pair of opposed jaws until a threshold grip force is detected by a load sensor associated with said clamping assembly,
• (ii) commands said electric motor to rotate said rotatable lead screw to incrementally lift or pull said object, and
• (iii) halts said electric motor upon detection of at least one of a torque limit, a displacement setpoint, or an instability condition indicated by a sensor data including load/tension measurements;
• said user interface comprising discrete controls for speed, direction, and mode selection and indicators of measured load and system status;
• and
• at least one transport aid affixed to said base frame to facilitate transport.