Retracting and releasing method of folding arm type propeller
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
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
View PDF5 Cites 1 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
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...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more