Marine constant-tension winch

Abstract

The invention relates to a marine constant-tension winch. The marine constant-tension winch comprises a motor, a reduction gearbox, a winding drum and a fair-lead. The motor drives the winding drum through the reduction gearbox. A mooring rope is wound on the winding drum and connected with the fair-lead in a penetrating mode. The marine constant-tension winch further comprises a constant-tension control system. The constant-tension control system comprises a magnetic powder clutch, a force measuring device and a PLC. The magnetic powder clutch is installed between the output of the motor and the input of the reduction gearbox. The force measuring device is a three-roller shaft pin type force measuring device. The three-roller shaft pin type force measuring device comprises three rollers distributed in the shape of an isosceles triangle. A rotary shaft of the middle roller is a shaft pin type force measuring sensor. An encoder is installed on a rotary shaft of one of the rollers arranged on the two sides. The three-roller shaft pin type force measuring device is arranged between the winding drum and the fair-lead. The mooring rope sequentially penetrates through the three rollers and then is reversed through the fair-lead to be output. A PLC control device is in control connection with the motor, the shaft pin type force measuring sensor, the encoder and the magnetic powder clutch.

Description

technical field [0001] The invention designs a marine winch, and in particular relates to a constant tension marine winch. Background technique [0002] The ship winch is the most important equipment for marine operation ships and cargo ships. Because its main function is to use it for dragging, mooring and positioning in complex marine environments, a constant tension winch that can automatically control the tension and speed of cables is becoming more and more It has attracted attention, especially in crane ships, barges, traversing dredgers, pipe-laying ships, and offshore platforms and other ships have extensive practical application value, and has become one of the important equipment of deck machinery at present. When the constant tension winch is used as an "anchor" winch on a ship for positioning and dynamic fixing of the ship, sometimes under harsh sea conditions, the positioning of the ship is extremely difficult or even difficult to complete. The movement of the ...

AI Technical Summary

Problems solved by technology

At present, most constant tension winches on the market generally use motors or hydraulic motors to directly drive the reducer. In that control mode, the motor or hydraulic horse often works in forward and reverse directions very frequently in a short period of time. Bearings and output shafts have great damage; especially the damage to the motor is fatal, because the motor needs to have a short-term stop state during forward and reverse work, and in the constant tension control of the ship winch, The fluctuation of the ship caused by the sea waves is also instantaneous, if the constant tension winch cannot respond in a timely manner, it may cause a serious accident of cable breakage

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