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Retracting and releasing method of folding arm type propeller

A propeller and arm-type technology, which is applied in the field of retractable arm propellers, can solve the problems of the locking device being difficult to disengage, the impact of the hull, etc., and achieve the effect of solving the problem of being difficult to disengage and reducing frictional force.

Active Publication Date: 2016-04-13
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the locking device is not easy to disengage when the propeller is lowered and the propeller impacts the hull, the embodiment of the present invention provides a retractable method for the folding arm propeller

Method used

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  • Retracting and releasing method of folding arm type propeller
  • Retracting and releasing method of folding arm type propeller
  • Retracting and releasing method of folding arm type propeller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The embodiment of the present invention provides a method for retracting and retracting a folding-arm propeller, such as figure 1 As shown, the folding method includes:

[0038] Step 101: Execute the thruster retraction process, and control the locking device in the lowered position to disengage.

[0039] Step 102: Drive the propeller to retract at a normal moving speed, and adjust the moving speed of the propeller to a low speed when the propeller moves to a retracting deceleration position.

[0040] Step 103: After the pusher moves to the retracted position, control the retracted position locking device to lock.

[0041] Step 104: Execute the process of lowering the thruster, and drive the thruster to retract at a low speed.

[0042] Step 105: Control the retracted position locking device to disengage.

[0043] Step 106: Drive the propeller to extend at a constant moving speed, and adjust the moving speed of the propeller to a low speed when the propeller moves to ...

Embodiment 2

[0047] The embodiment of the present invention provides another retractable method of the folding arm propeller, see Figure 2-3 , the retraction method includes:

[0048] Step 201: Execute the thruster retraction process, and control the locking device in the lowered position to disengage.

[0049] During realization, the disengagement of the locking device in the lowering position is controlled by the lowering position telescopic oil cylinder.

[0050] Step 202: Drive the propeller to retract at a constant moving speed.

[0051] During implementation, the retraction of the propeller is controlled by the propeller telescopic oil cylinder.

[0052] Specifically, before driving the propeller, first check whether the lowering position locking device is completely disengaged by the position sensor unit, if it has been completely disengaged, enter step 202; if not completely disengaged, then repeat step 201 until the lowering position lock The tightening device is completely di...

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PUM

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Abstract

The invention discloses a retracting and releasing method of a folding arm type propeller, belonging to the technical field of propeller control. The retracting and releasing method comprises a propeller retracting process and a propeller releasing process. The propeller retracting process comprises the following steps: controlling a releasing position locking device to be disengaged; driving the propeller to retract at a constant movement speed; when the propeller moves to a retracting deceleration position, adjusting the movement speed of the propeller to be a low speed; and when the propeller moves to a retracting position, controlling a retracting position locking device to be locked. The propeller releasing process comprises the following steps: driving the propeller to retract at a low movement speed; controlling the retracting position locking device to be disengaged; driving the propeller to extend out at a constant movement speed; when the propeller moves to a releasing deceleration position, adjusting the movement speed of the propeller to be a low speed; and when the propeller moves to a releasing position, controlling the releasing position locking device to be locked. The method disclosed by the invention solves the problems that the locking device is not easy to disengage when the propeller is released and the propeller generates impact to a hull.

Description

technical field [0001] The invention belongs to the technical field of thruster control, and in particular relates to a retractable method of a folding-arm type thruster. Background technique [0002] The foldable arm propeller is an auxiliary propeller that can retract the hull. It is suitable for special ships that need to pass through shallow water areas. When the channel is in a shallow water area, retract the propeller into the hull. Lower the thruster to the working position. At present, the retraction and lowering of the propeller are mainly controlled by the electro-hydraulic system. When the propeller needs to be retracted, the telescopic cylinder of the folding arm is controlled to retract. When the propeller needs to be lowered, the telescopic cylinder of the folding arm is controlled to extend. After going out or completely retracting, it is locked by the locking device. However, when the propeller is retracted and extended, the propeller will have an impact on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H20/08
CPCB63H20/08
Inventor 赵丽雄池飞飞陈利鹏李霞林高海涛
Owner WUHAN MARINE MACHINERY PLANT
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