A winch control device

Abstract

The invention relates to the field of hydraulic control, in particular to a winch control device. The winch control device comprises a load-sensitive multi-way valve, a one-way throttling valve, a first shuttle valve, a second shuttle valve, a balance valve, a reversing valve, a throttling valve, a safety valve, a winch motor, a winch brake, a three-way ball valve, a first one-way valve, a second one-way valve, a manual pump, an overflow valve and an oil tank. An opening pi of a pilot opening of the reversing valve communicates with an opening b of the first shuttle valve and communicates with an opening b of the three-way ball valve. An opening c of the three-way ball valve communicates with an opening D of the winch motor. An opening c of the second shuttle valve communicates with an opening a of the first shuttle valve. An opening c of the first shuttle valve communicates with the one-way throttling valve. The one-way throttling valve communicates with the winch brake. The size of throttling holes of the one-way throttling valve is adjusted, the closing time of the winch brake is matched, and pressure impact is avoided; when pressure exceeds the set pressure of the safety valve, the safety valve is opened, and impact is relieved; when manual operation is needed, the brake can be released, the reversing valve is opened, and load is down; and the purposes that cost is lowered, and efficiency is improved are achieved.

Description

technical field [0001] The invention relates to the field of hydraulic control, in particular to a winch control device. Background technique [0002] The riser is an essential pipe tool for deepwater drilling, which has the characteristics of large size and high quality. A riser crane is a device used to raise or lower a riser. [0003] Generally, in the riser crane, the winch motor is used as the power to lift or lower the riser. [0004] see figure 1 , the current winch control system includes a load-sensing multi-way valve 101, a first shuttle valve 102a, a second shuttle valve 102b, a third shuttle valve 102c, a balance valve 103, a winch motor 104, a winch brake 105, a first one-way Valve 106, manual pump 107, overflow valve 108, oil tank 109, port A of load sensing multi-way valve 101 is connected to port b of second shuttle valve 102b, port b of second shuttle valve 102b is connected to port a of balance valve 103 connection, the b port of the balance valve 103 i...

AI Technical Summary

Problems solved by technology

Not only time-consuming and labor-intensive, but also the accuracy is not high, resulting in low precision of load drop speed control. At the same time, when the manual pump system is not selected in normal use, the oil in the brake chamber of the winch brake 105 and the balance valve 103 with overflow function The oil at the x port of the X port cannot leak well in time, causing the oil pressure in this oil circuit to be suppressed, and when the load stops, the winch brake 105 cannot be braked in time, and the balance valve with overflow function cannot be closed in time, causing the riser The crane stalls, damages the hydraulic system components of the riser crane, and causes losses

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