CN110171526B - Zero calibration method for propulsion module - Google Patents
Zero calibration method for propulsion module Download PDFInfo
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- CN110171526B CN110171526B CN201910459224.1A CN201910459224A CN110171526B CN 110171526 B CN110171526 B CN 110171526B CN 201910459224 A CN201910459224 A CN 201910459224A CN 110171526 B CN110171526 B CN 110171526B
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- propulsion module
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
Abstract
The invention discloses a zero calibration method for a propulsion module, which comprises the following steps: s100, determining a cross center line of a steering module on a ground sample; step S200, mounting a propulsion module on a steering module; step S300, marking the front and rear central points of the propulsion module at the bottom of the propulsion module; and S400, correcting the propulsion module by using laser equipment, and rotating the steering module to enable a connecting line of front and rear central points of the propulsion module to be parallel to front and rear central lines of a cross central line. The line connecting the front center point and the rear center point of the propulsion module is parallel to the cross center line by rotating the steering module in the correction process, so that zero alignment of the steering module and the propulsion module is realized, and the propulsion module and the steering module are in zero positions at the moment.
Description
Technical Field
The invention relates to the technical field of ship building, in particular to a zero calibration method for a propulsion module.
Background
In the process of installing the propulsion module of the ship, the propulsion module and the steering module need to be aligned to zero so as to ensure the correctness of the installation and debugging of the propulsion module of the ship. In prior practice, the propulsion module of the propulsion device has no central marking and the shaft of the propulsion module is located inside the propulsion module. The conventional process cannot find zero positions. Resulting in large errors in calibrating the rudder angle indicator.
Disclosure of Invention
One object of an embodiment of the present invention is to: the zero calibration method for the propulsion module is provided, and zero calibration for the propulsion module can be conveniently realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
the zero calibration method for the propulsion module comprises the following steps:
s100, determining a cross center line of a steering module on a ground sample;
step S200, a propulsion module is mounted on the steering module;
step S300, marking the front and rear central points of the propulsion module at the bottom of the propulsion module;
and S400, correcting the propulsion module by using laser equipment, and rotating the steering module to enable a connecting line of the front central point and the rear central point of the propulsion module to be parallel to the front central line and the rear central line of the cross central line.
As a preferred embodiment of the present invention, the step S100 includes:
step S110, marking a rib position line where the cross center line of the steering module is located on a hull center line of the ground sample according to a design drawing;
and step S120, drawing the cross center line on the ground sample corresponding to the rib position line according to the design drawing.
As a preferred embodiment of the present invention, before the step S110, the method further includes correcting the position of the nacelle center line.
As a preferred embodiment of the present invention, after the step S120, the method further includes:
step S130, vertically projecting the cross center line to an outer plate flange of a ship, and correspondingly marking left and right mark points on the edge of an inner hole of the outer plate flange;
step S140, setting a powder line through a width center line of a steering ship at the lower part of the steering module;
s150, measuring half-width data from the left mark point and the right mark point to the chalk line;
and S160, determining the left-right deviation of the cross center line according to the half-width data, and correcting the position of the cross center line.
As a preferred technical solution of the present invention, after the step S160, the method further includes vertically projecting the corrected center line of the cross onto an outer plate of the ship, and marking a corresponding mark.
As a preferred embodiment of the present invention, the step S200 includes:
step S210, hoisting the propulsion module to a steering module position of a ship;
step S220, aligning the propulsion module with the steering module;
and step S230, connecting and fixing the propulsion module and the steering module.
As a preferred embodiment of the present invention, the step S300 includes:
step S310, hanging two bulbous bow flange heavy hammers on two sides of the upper half part of the bulbous bow flange of the propulsion module respectively;
step S320, measuring the horizontal distance between the vertical lines of the two bulbous bow flange weights, calculating the position of the rear central point of the propulsion module corresponding to the position of the bulbous bow flange weight, and marking the rear central point of the propulsion module on the bottom of the propulsion module;
step S330, hanging two heavy hammers of the diversion cap flange at two sides of the upper half part of the diversion cap flange of the propulsion module respectively;
step S340, measuring a horizontal distance between two vertical lines of the guiding cap flange weights, calculating a position of a front center point of the propulsion module corresponding to the position of the guiding cap flange weights, and marking the front center point of the propulsion module on the bottom of the propulsion module.
As a preferred embodiment of the present invention, the step S400 includes:
step S410, erecting laser equipment respectively in front of and behind the propulsion module corresponding to the cross center line of the ground sample;
step S420, enabling the reference surfaces swept out by the two laser devices to be respectively parallel to the front and back directions of the cross center line;
step S430, rotating the steering module to enable a connecting line for measuring the front and rear central points of the propulsion module to be parallel to the reference plane.
As a preferred embodiment of the present invention, the step S430 includes:
step S431, measuring distances between the front and rear center points of the propulsion module and the reference plane, respectively;
step S432, turning the steering module according to the distance measured in step S431 to make the distances between the front and rear center points and the reference plane equal.
As a preferred technical solution of the present invention, after the step S432, the method further includes marking a zero mark on the moving ring and the stationary ring of the steering module, respectively.
The invention has the beneficial effects that: the cross center line of the steering module is determined on a ground sample, then the propulsion module is installed on the steering module, the front and rear center points of the propulsion module are marked at the bottom of the propulsion module, finally the propulsion module is corrected by utilizing laser equipment, and the steering module is rotated in the correction process, so that the connecting line of the front and rear center points of the propulsion module is parallel to the cross center line, namely, the zero alignment of the steering module and the propulsion module is realized, and the propulsion module and the steering module are in zero position at the moment. By utilizing the characteristic that the connecting line of the front central point and the rear central point of the propulsion module is parallel to the front central line and the rear central line of the cross central line when the propulsion module and the steering module are at zero positions, zero alignment of the propulsion module and the steering module is conveniently realized after the propulsion module is installed, so that the accurate zero alignment of the propulsion module and the steering module is ensured, the rudder angle indicator is conveniently calibrated, the confirmation of the zero alignment is maintained in the future, and the correctness of the installation and the work of the propulsion module is ensured.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a schematic diagram of a zero calibration method for a propulsion module according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a zero calibration method for a propulsion module according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a zero calibration method for a propulsion module according to an embodiment of the present invention.
In the figure:
1. a steering module; 2. a propulsion module; 3. an outer plate flange; 4. a bulbous bow flange; 5. a bulbous bow flange weight; 6. a deflector cap flange; 7. a flange heavy hammer of the diversion cap; 8. a laser device.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 3, in the present embodiment, the method for zeroing a propulsion module according to the present invention includes the following steps:
step S100, determining a cross center line of the steering module 1 on a ground sample;
step S200, mounting the propulsion module 2 on the steering module 1;
step S300, marking the front and rear central points of the propulsion module 2 at the bottom of the propulsion module 2;
step S400, the laser device 8 is used for correcting the propulsion module 2, and the steering module 1 is rotated to enable the connecting line of the front central point and the rear central point of the propulsion module 2 to be parallel to the front central line and the rear central line of the cross central line.
The cross center line of the steering module 1 is determined on a ground sample, then the propulsion module 2 is installed on the steering module 1, the front center point and the rear center point of the propulsion module 2 are marked at the bottom of the propulsion module 2, finally the propulsion module 2 is corrected by using the laser device 8, the connection line of the front center point and the rear center point of the propulsion module 2 is parallel to the cross center line by rotating the steering module 1 in the correction process, namely, the zero alignment of the steering module 1 and the propulsion module 2 is realized, and the propulsion module 2 and the steering module 1 are in the zero position at the moment. By utilizing the characteristic that the connecting line of the front central point and the rear central point of the propulsion module 2 is parallel to the front central line and the rear central line of the cross central line when the propulsion module 2 and the steering module 1 are in zero position, zero alignment of the propulsion module 2 and the steering module 1 is conveniently realized after the propulsion module 2 is installed, so that the accurate zero alignment of the propulsion module 2 and the steering module 1 is ensured, the rudder angle indicator is conveniently calibrated, the confirmation of the zero position is maintained in the future, and the installation and the working correctness of the propulsion module 2 are ensured.
In the embodiment of the present invention, step S100 includes:
step S110, marking a rib position line where a cross center line of the steering module 1 is located on a hull center line of the ground sample according to a design drawing;
and step S120, marking out a cross center line on the ground sample corresponding to the rib position line according to the design drawing.
The rib position line where the cross center line of the steering module 1 is located is determined on the hull center line in the ship length direction according to the design drawing, the preset distance is deviated according to the requirement in the design drawing, the theoretical cross center line position of the steering module 1 is determined according to the deviation, the zero alignment of the steering module 1 and the propulsion module 2 in the subsequent step can be achieved, and the situation that the cross center line of the steering module 1 is not convenient to observe and is aligned after the propulsion module 2 is installed in the later stage is avoided.
In a preferred embodiment, before step S110, the method further comprises correcting the position of the nacelle centerline. Because the installation position of the propulsion device can deviate in the building process of the ship, and the structural member of the ship is deformed due to heat influence in the machining process and the like, and the installation error is influenced, so that the center line of the actual installation position of the propulsion device of the ship is displaced to a certain extent, the center line of the pod of the ship body needs to be corrected after the cross center line of the steering module 1 is found out according to a drawing, the influence of errors caused in the ship building process on zero calibration of the propulsion module is reduced, the data measurement precision is ensured, and the installation correctness of the steering module 1 and the propulsion module 2 is ensured.
In a specific embodiment, after step S120, the method further includes:
step S130, vertically projecting the cross center line to an outer plate flange 3 of the ship, and correspondingly marking left and right mark points on the edge of an inner hole of the outer plate flange 3;
step S140, setting a powder line through the width center line of the steering ship at the lower part of the steering module 1;
s150, measuring half-width data from the left mark point, the right mark point to the chalk line;
and step S160, determining the left-right deviation of the cross center line according to the half-width data, and correcting the position of the cross center line.
The designed theoretical cross center line is projected onto the outer plate flange 3 of the ship, the left mark point and the right mark point are correspondingly marked on the edge of the inner hole of the outer plate flange 3, two mark points corresponding to the ship width direction of the ship on the inner hole of the outer plate flange 3 can be conveniently found, then the rotation module is displayed on the bottom of the rotation module along the center line of the ship length direction in a manner of pulling a chalk line, the measurement of the deviation between the cross center line of the steering module 1 and the cross center line of the outer plate flange 3 is realized, and finally the original marked cross center line is deviated on a ground sample according to the measured deviation, so that the actual cross center line of the steering module 1 can be obtained.
Optionally, after step S160, the method further includes vertically projecting the corrected center line of the cross onto an outer plate of the ship, and marking a corresponding mark. The corrected cross center line is vertically projected onto the outer plate of the ship and correspondingly marked, so that the cross center line of the steering module 1 and the cross center line on the ground sample can be corrected conveniently after the propulsion module 2 is installed, the situation that the cross center line of the steering module 1 and the cross center line on the ground sample are aligned can be guaranteed after the propulsion module 2 is installed, otherwise, the marking of the ship outer plate can be used for correcting the marking of the ground sample, and the zero alignment accuracy of the propulsion module 2 and the steering module 1 is guaranteed.
In the embodiment of the present invention, step S200 includes:
step S210, hoisting the propulsion module 2 to the position of the steering module 1 of the ship;
step S220, aligning the propulsion module 2 with the steering module 1;
and step S230, connecting and fixing the propulsion module 2 and the steering module 1.
The propulsion module 2 and the steering module 1 are aligned with marks made in the workshop machining process in the installation process, so that the connection and fixation correctness of the steering module 1 and the propulsion module 2 can be ensured, and the installation accuracy of the steering module 1 and the propulsion module 2 is ensured.
In the embodiment of the present invention, step S300 includes:
step S310, hanging two bulbous bow flange heavy hammers 5 on two sides of the upper half part of the bulbous bow flange 4 of the propulsion module 2 respectively;
step S320, measuring the horizontal distance between the vertical lines of the two bulbous bow flange heavy hammers 5, calculating the position of the rear central point of the propulsion module 2 corresponding to the position of the bulbous bow flange heavy hammers 5, and marking the rear central point of the propulsion module 2 on the bottom of the propulsion module 2;
step S330, hanging two guiding cap flange heavy hammers 7 on two sides of the upper half part of the guiding cap flange 6 of the propelling module 2 respectively;
step S340, measure the horizontal distance between the vertical lines of the two guiding cap flange weights 7, calculate the position of the front center point of the propulsion module 2 corresponding to the position of the guiding cap flange weight 7, and mark the front center point of the propulsion module 2 on the bottom of the propulsion module 2.
The center points of the positions of the bulbous bow flange 4 and the diversion cap flange 6 on the center line of the propulsion module 2 are marked on the bottom surface of the propulsion module 2, so that the center line of the propulsion module 2 and the center line of the steering module 1 can be corrected conveniently, and the corrected propulsion module 2 and the center line of the nacelle are parallel, namely the propulsion module 2 is aligned with a zero position.
Further, step S400 includes:
step S410, erecting laser devices 8 on the cross center lines of the corresponding ground samples respectively in front of and behind the propulsion module 2;
step S420, enabling the reference surfaces scanned by the two laser devices 8 to be parallel to the front and back directions of the cross center line respectively;
and step S430, rotating the steering module 1 to enable the connecting line of the front central point and the rear central point of the measurement propulsion module 2 to be parallel to the reference plane.
Through erect laser equipment 8 respectively around advancing module 2, can avoid the condition that laser equipment 8 can't scan to appear, guarantee the normal development to advancing module 2's correction work, simultaneously, set up two laser equipment 8, can also play the effect of mutual correction, guarantee the reference surface that laser equipment 8 scanned out and the parallel of cross central line, and then guarantee the accuracy to advancing module 2 and the correction of helm module 1.
Further, step S430 includes:
step S431, respectively measuring the distances between the front and rear central points of the propulsion module 2 and a reference plane;
step S432 is to rotate the steering module 1 according to the distance measured in step S431, so that the distances between the front and rear center points and the reference plane are equal.
The distance between the reference surface swept out by the laser device 8 and the front and rear central points marked on the bottom of the propulsion module 2 is measured, and then the steering module 1 is rotated to drive the propulsion module 2 to rotate, so that the change of the propulsion module 2 is realized, and when the distances between the front and rear central points and the reference surface are equal, the central line of the propulsion module 2 is parallel to the central line of the nacelle, so that the change work is completed.
In an optional embodiment, after step S432, marking zero marks on the moving ring and the static ring of the helm module 1 respectively is further included. Furthermore, the rudder angle indicator can be conveniently calibrated and the zero position can be conveniently confirmed in future maintenance, and the change is prevented from being made again.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. A method of zeroing a propulsion module, comprising the steps of:
s100, determining a cross center line of a steering module on a ground sample;
step S200, a propulsion module is mounted on the steering module;
step S300, marking the front and rear central points of the propulsion module at the bottom of the propulsion module;
step S400, correcting the propulsion module by using laser equipment, and rotating the steering module to enable a connecting line of the front central point and the rear central point of the propulsion module to be parallel to the front central line and the rear central line of the cross central line;
the step S100 includes:
step S110, marking a rib position line where the cross center line of the steering module is located on a hull center line of the ground sample according to a design drawing;
step S120, drawing the cross center line on the ground sample corresponding to the rib position line according to the design drawing;
after the step S120, the method further includes:
step S130, vertically projecting the cross center line to an outer plate flange of a ship, and correspondingly marking left and right mark points on the edge of an inner hole of the outer plate flange;
step S140, setting a powder line through a width center line of a steering ship at the lower part of the steering module;
s150, measuring half-width data from the left mark point and the right mark point to the chalk line;
and S160, determining the left-right deviation of the cross center line according to the half-width data, and correcting the position of the cross center line.
2. A propulsion module zeroing method according to claim 1, further comprising, before said step S110, correcting the position of the nacelle centreline.
3. The propulsion module zero calibration method according to claim 1, further comprising projecting the calibrated cross center line perpendicularly onto an outer plate of the ship and marking a corresponding mark after the step S160.
4. A propulsion module zeroing method according to claim 1, wherein said step S200 comprises:
step S210, hoisting the propulsion module to a steering module position of a ship;
step S220, aligning the propulsion module with the steering module;
and step S230, connecting and fixing the propulsion module and the steering module.
5. A propulsion module zeroing method according to claim 1, wherein said step S300 comprises:
step S310, hanging two bulbous bow flange heavy hammers on two sides of the upper half part of the bulbous bow flange of the propulsion module respectively;
step S320, measuring the horizontal distance between the vertical lines of the two bulbous bow flange weights, calculating the position of the rear central point of the propulsion module corresponding to the position of the bulbous bow flange weight, and marking the rear central point of the propulsion module on the bottom of the propulsion module;
step S330, hanging two heavy hammers of the diversion cap flange at two sides of the upper half part of the diversion cap flange of the propulsion module respectively;
step S340, measuring a horizontal distance between two vertical lines of the guiding cap flange weights, calculating a position of a front center point of the propulsion module corresponding to the position of the guiding cap flange weights, and marking the front center point of the propulsion module on the bottom of the propulsion module.
6. A propulsion module zeroing method according to claim 1, wherein said step S400 comprises:
step S410, erecting laser equipment respectively in front of and behind the propulsion module corresponding to the cross center line of the ground sample;
step S420, enabling the reference surfaces swept out by the two laser devices to be respectively parallel to the front and back directions of the cross center line;
step S430, rotating the steering module to enable a connecting line for measuring the front and rear central points of the propulsion module to be parallel to the reference plane.
7. A propulsion module zeroing method according to claim 6, wherein said step S430 comprises:
step S431, measuring distances between the front and rear center points of the propulsion module and the reference plane, respectively;
step S432, turning the steering module according to the distance measured in step S431 to make the distances between the front and rear center points and the reference plane equal.
8. The propulsion module zeroing method according to claim 7, further comprising marking a null mark on the rotating ring and the stationary ring of the steering module after the step S432.
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| CN111891315B (en) * | 2020-08-11 | 2022-05-03 | 江苏科技大学 | Mounting process of full-rotation main thruster of engineering ship |
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| CN109178202A (en) * | 2018-10-31 | 2019-01-11 | 广船国际有限公司 | A kind of installation method of propulsion device |
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2019
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| NO312128B1 (en) * | 1997-07-04 | 2002-03-25 | Abb Azipod Oy | Propulsion and steering device for a seagoing vessel |
| CN102490003A (en) * | 2011-11-28 | 2012-06-13 | 广州中船黄埔造船有限公司 | Method for installing telescopic full-rotating rudder propeller device |
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