Suspension work platform hoist system
AssigneeSky Climber, LLC
InventorsGeorge M. Anasis, Robert E. Eddy, Gary E. Ingram, Jean-Francois De Smedt, Hui Li
Life of this patent
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Abstract
A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a hoist control system having a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist. The hoist control system may further include a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system.
Claims20
A suspension hoist system engaging a suspension rope, comprising:
- a hoist having a motor and a traction mechanism designed to cooperate with the rope;
- and
- a hoist control system in electrical communication with the motor, wherein the hoist control system monitors a suspended load on the hoist and prevents operation if the suspended load exceeds a predetermined suspended load value.
A suspension hoist system engaging a suspension rope, comprising:
- a hoist having a motor and a traction mechanism designed to cooperate with the rope;
- an overspeed safety device attached to the hoist and engaging the rope;
- and
- a hoist control system in electrical communication with the motor, wherein the hoist control system monitors (a) a suspended load on the hoist and prevents operation if the suspended load exceeds a predetermined suspended load value, (b) activation of the overspeed safety device, and (c) at least one characteristic of the hoist selected from the group of input voltage, current draw, and motor temperature, and prevents operation of the hoist if the at least one characteristic is outside of an allowable operating range.
A suspension hoist system engaging a suspension rope, comprising:
- a hoist having a motor and a traction mechanism designed to cooperate with the rope;
- an overspeed safety device attached to the hoist and engaging the rope;
- at least one tilt sensor;
- and
- a hoist control system in communication with the motor and the at least one tilt sensor, wherein the hoist control system monitors (a) a suspended load on the hoist and prevents operation if the suspended load exceeds a predetermined suspended load value, (b) activation of the overspeed safety device, (c) at least two characteristics of the hoist selected from the group of input voltage, current draw, and motor temperature, and prevents operation of the hoist if the at least one characteristic is outside of an allowable operating range, and (d) a tilt angle measured by the tilt sensor and prevents operation if the tilt angle is beyond a tilt angle setpoint.
Dependencies are inferred from the claim text.