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Design principle of hydraulic steering gear

Release time:

2022-01-10

Hydraulic steering gear is the core equipment of ship navigation, known as "sea navigation depends on the helmsman", hydraulic steering gear hydraulic steering smooth, fast, rudder position maintenance and steering switching smooth, is the priority of large and medium-sized ships to determine the equipment. Therefore, we introduce some points of attention in the selection of hydraulic steering gear. Nominal maximum torque: 10-500kN · m Steering time: ≤ 20s/65 ° (from one side 35 ° to the other side 30 °, single pump) Angle of rudder turning mechanism: ± 35 ° (limit theoretical angle: ± 36.5 °) tiller radius: 200-350mm Number of rudders: double rudders Rudder pushing device form: fork type Working pressure 8.5Mpa Safety valve adjustment pressure: 10.6Mpa Control form: electric control Oil pump unit: two sets of oil pump units, each for standby. Hydraulic oil grade and recommended for N32 thickened low-set hydraulic oil. Every ship shall be provided with such a main steering gear and a major auxiliary steering gear. The arrangement of the main and auxiliary steering gears shall be such that when one fails, the other does not fail. The main contents of the research on the structure information system of hydraulic steering gear include pump group, push rudder device and steering device, human emergency management system and fuel tank, etc. The steering wheel of the hydraulic steering gear is composed of three parts: steering mechanism, hydraulic system and steering control system. The function of the rudder pushing mechanism is to convert hydraulic energy into mechanical energy to push the rudder blade to deflect. The function of the hydraulic system is to provide sufficient hydraulic energy for the steering gear. The development of the main steering system device has its own sufficient strength problem and can carry out automatic steering when the operating capacity is advanced, so that the rudder can be transferred from 35 ° on either side to 35 ° on the other side, and the working time required for transferring from 35 ° on one side to 30 ° on the other side under the influence of the same environmental conditions shall not exceed 28s. The steering speed of the auxiliary steering gear can reach half of the forward speed of the operation, but not less than 7 kN, and the time required to turn the rudder from 15 degrees on one side to 15 degrees on the other side does not exceed 60 seconds. There are two functions of the steering control management system: one is to transmit information to the steering order, and the other is to control the steering accuracy.

Nominal maximum torque: 10-500kN · m

Steering time: ≤ 20s/65 ° (from one side 35 ° to the other side 30 °, single pump)

Angle of rudder turning mechanism: ± 35 ° (limit theoretical angle: ± 36.5 °)

tiller radius: 200-350mm

Number of rudders: double rudders

Rudder pushing device form: fork type

Working pressure 8.5Mpa

Safety valve adjustment pressure: 10.6Mpa

Control form: electric control

Oil pump unit: two sets of oil pump units, each for standby.

Hydraulic oil grade and recommended for N32 thickened low-set hydraulic oil. Every ship shall be provided with such a main steering gear and a major auxiliary steering gear. The arrangement of the main and auxiliary steering gears shall be such that when one fails, the other does not fail.

The main contents of the research on the structure information system of hydraulic steering gear include pump group, push rudder device and steering device, human emergency management system and fuel tank, etc.

The steering wheel of the hydraulic steering gear is composed of three parts: steering mechanism, hydraulic system and steering control system. The function of the rudder pushing mechanism is to convert hydraulic energy into mechanical energy to push the rudder blade to deflect. The function of the hydraulic system is to provide sufficient hydraulic energy for the steering gear. The development of the main steering system device has its own sufficient strength problem and can carry out automatic steering when the operating capacity is advanced, so that the rudder can be transferred from 35 ° on either side to 35 ° on the other side, and the working time required for transferring from 35 ° on one side to 30 ° on the other side under the influence of the same environmental conditions shall not exceed 28s. The steering speed of the auxiliary steering gear can reach half of the forward speed of the operation, but not less than 7 kN, and the time required to turn the rudder from 15 degrees on one side to 15 degrees on the other side does not exceed 60 seconds. There are two functions of the steering control management system: one is to transmit information to the steering order, and the other is to control the steering accuracy.

Key words:

Introduction and characteristics of marine hydraulic windlass