Knowledge of drilling equipment-Winch structure and principle

Winch structure and principleWinch

 The winch is the lifting equipment of the drilling rig, which is mainly used for lifting and lowering the drilling tool, casing, controlling the drilling pressure, feeding the drilling tool and lifting the derrick. Generally including drum shaft, cat's head shaft, transmission braking mechanism, lubrication mechanism and shell, etc., according to the shaft is divided into single-shaft, double-shaft, three-shaft and multi-shaft winch, according to the number of rollers into a single drum and multi-drum winches.

Working schematic diagram of the drilling rig winch

Schematic diagram of brake mechanism

1-brake belt    2-brake drum    3-Leverage     4-Brake lever     5-Driller control valve    

6- Balance frame      7-Stroke limiting screw      8-brake cylinder       9-spring

Air tire clutch working condition is heavy

1.Upper moving shaft       2.Friction wheel       3. Tray       4 . Air guide tube       5. Passive shaft

Electromagnetic eddy current brake

1 - Lead-in wire     2 - Magnetic pole     3 - Water jacket      4 - Rotor      5 - Excitation line diagram

6 - Stator      7 - Base pole connection      8 - Water outlet       9—Water inlet (both sides)

10 - Junction box         11— Lift ring

 1000 diameter single row water brake

1 - External light       2 - Main shaft      3. 4 - Side cover (fixed)       5 - Rotor     6 - Teeth clutch    7 - Blade