Patent ID: 11897737
Assignee: nan
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 8:
9. The winch according to claim 1, wherein the clutch I (2.4) and the clutch shifter (2.5) are in a neutral position by pressing a special hook lowering switch when the hook is lowered, and the power mechanism (1) rotates a normally closed brake (4.1) to release the brake, the empty hook of the winding drum (3) can rapidly descend under the control of a winding drum normally-open brake (4.2), and the power mechanism (1) stops rotating and normally-closed brake (4.1) brakes;
in the lifting hook descending process, a first-gear multi-disc friction clutch I (2.4) is connected with a power mechanism (1), a motor is used for regenerative electric braking, or a hydraulic motor is connected for assisting braking by means of a motor brake, hydraulic system throttling speed regulation, volume speed regulation and the like, and the winding drum normally-open brake (4.2) and a driving shaft normally-open brake (4.3) are braked under manual control or automatic control; the sensor (6) is fixed on the rack (5) and connected with the microcomputer and the PLC.