CN112208729A - Detection method of fully-suspended twisted rudder blade - Google Patents
Detection method of fully-suspended twisted rudder blade Download PDFInfo
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- CN112208729A CN112208729A CN202011145422.XA CN202011145422A CN112208729A CN 112208729 A CN112208729 A CN 112208729A CN 202011145422 A CN202011145422 A CN 202011145422A CN 112208729 A CN112208729 A CN 112208729A
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- rudder blade
- bushing
- rudder
- shaft sleeve
- twisted
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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
- B63B79/00—Monitoring properties or operating parameters of vessels in operation
- B63B79/30—Monitoring properties or operating parameters of vessels in operation for diagnosing, testing or predicting the integrity or performance of vessels
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a method for detecting a fully suspended twisted rudder blade, which comprises the following steps: the step of measuring the clearance between the bushing and the shaft sleeve comprises the following steps: after the rudder blade rotates to an angular position of 0 degree, a measuring ruler penetrates through an external inspection hole of the fully suspended twisted rudder blade and is plugged into a gap between the bushing and the shaft sleeve, and the clearance is judged to exceed the standard by using the reading of the feeler; measurement of displacement between bushing and sleeve: a hand penetrates through an external inspection hole of the fully suspended twisted rudder blade and touches grooves engraved on the bushing and the sleeve; detection of the relative displacement between the rudder stock 1 and the rudder blade: the visual inspection is carried out on whether the ocean punching eye on the rudder stock and the pointer on the rudder blade are collinear or not, and if the ocean punching eye and the pointer are collinear, the rudder blade and the rudder stock do not generate relative displacement; and (3) detecting the loosening condition of the hydraulic nut: the rudder blade is rotated to an angular position of 0 degrees, the pressing plate and the fastening screw on the inspection plug are detached, the cock is screwed off, and whether the pointer on the end cover of the hydraulic nut rotates or not is visually observed. The detection method of the fully suspended twisted rudder blade is convenient to detect and quick to operate.
Description
Technical Field
The invention relates to the technical field of ships, in particular to a method for detecting a fully suspended twisted rudder blade.
Background
The propulsion system of the ship comprises a shafting, a propeller, a rudder blade, a rudder stock, a rudder pintle, a sleeve, a shaft sleeve, a bush and the like, and ensures the navigational speed and the course of the ship, thereby being convenient for the better operation of the ship. The inspection work of the ship is mainly responsible for the safe operation of the ship during the daily management of the ship, and the propulsion system is an important work for the inspection of the ship. In the docking inspection within five years after the ship is delivered and operated, in order to reduce the cost and the inspection period, a ship management company designs an underwater inspection method according to the requirements of a classification society at the initial stage of ship design to replace the five-year docking inspection. The requirements of the classification society specifications for underwater inspection methods include that the inspection such as the gap between a bushing and a shaft sleeve, the displacement between the bushing and a sleeve, the relative displacement between a rudder blade and a rudder stock, the loosening condition of a hydraulic nut and the like can be well performed, the inspection methods are embodied in a ship design drawing, and the inspection methods are provided.
The fully suspended twisted rudder system is different from a conventionally propelled rudder system, a rudder pin is not arranged, a rudder blade is connected with a ship body through a rudder stock, and the rudder stock and the rudder blade are driven to rotate by the rotation of a steering engine, so that a ship runs according to a specified course, and therefore the node design and inspection method of the positions is particularly important.
Therefore, a structural form meeting the requirement of the fully-suspended twisted rudder and a detection method meeting the standard requirement of the structural form are needed to be designed
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a detection method of a fully suspended twisted rudder blade, which is based on the structural form of the fully suspended twisted rudder and meets the standard requirement.
In order to achieve the above object, the present invention provides a method for detecting a fully suspended twisted rudder blade, which comprises a rudder stock and a sleeve installed outside the rudder stock, wherein the rudder blade is connected with a ship body through the rudder stock, a shaft sleeve is sleeved on the lower part of the rudder stock, a bushing is sleeved on the outer side of the shaft sleeve, a hydraulic nut is installed on the bottom of the rudder stock,
the detection method of the fully suspended twisted rudder blade comprises the following steps: measuring the gap between the bushing and the shaft sleeve, measuring the displacement between the bushing and the shaft sleeve, detecting the relative displacement between the rudder stock and the rudder blade and detecting the loosening condition of the hydraulic nut;
the step of measuring the clearance between the bushing and the shaft sleeve comprises the following steps: after the rudder blade rotates to an angular position of 0 degree, a measuring ruler penetrates through an external inspection hole of the fully suspended twisted rudder blade and is plugged into a gap between the bushing and the shaft sleeve, and the clearance is judged to exceed the standard by using the reading of the feeler;
the measurement steps of the displacement between the bushing and the shaft sleeve are as follows: rotating the rudder blade to an angular position of 0 degree, enabling a hand to pass through an external inspection hole of the fully suspended twisted rudder blade, touching grooves engraved on the bushing and the sleeve, and enabling the bushing not to displace if the grooves of the bushing and the sleeve are at the same position;
the relative displacement detection steps between the rudder stock and the rudder blade are as follows: rotating the rudder blade to an angular position of 0 degree, and observing whether the ocean punching eye on the rudder stock and the pointer on the rudder blade are collinear or not, wherein if the ocean punching eye and the pointer on the rudder stock are collinear, the rudder blade and the rudder stock do not generate relative displacement;
the hydraulic nut loosening condition detection steps are as follows: the rudder blade is rotated to an angular position of 0 degree, the pressing plate and the fastening screw on the inspection plug are detached, the cock is screwed off, whether the pointer on the end cover of the hydraulic nut rotates or not is visually observed, and if the pointer corresponds to the center of the inspection plug, the hydraulic nut is not loosened.
Preferably, the measuring rule in the step of measuring the gap between the bushing and the shaft sleeve is a feeler gauge, the feeler gauge comprises a first gauge rod and a second gauge rod which are at right angles, and the first gauge rod is inserted into the gap between the bushing and the shaft sleeve after passing through the inspection hole.
Preferably, in the step of measuring the displacement between the bushing and the shaft sleeve, grooves are formed in the positions where the susceptor is installed in match with the shaft sleeve, and when the bushing and the shaft sleeve do not deviate, the grooves of the bushing and the grooves of the shaft sleeve are connected to form smooth grooves.
Preferably, in the hydraulic nut loosening condition detecting step, a pressing plate and a fastening screw on the check plug are detached by using a socket head wrench, and the cock is screwed down by using a matched handle opening tool.
Preferably, two insertion holes are formed in the cock, the unlocking handle tool comprises a holding part and an insertion rod which is used for being inserted into the two insertion holes in a matching mode, and the unlocking handle tool drives the cock to rotate when the holding part is rotated.
Compared with the prior art, the invention has the beneficial effects that:
the method for detecting the fully suspended twisted rudder blade comprises the steps of measuring the gap between a bush and a shaft sleeve, measuring the displacement between the bush and the shaft sleeve, detecting the relative displacement between a rudder stock and the rudder blade and detecting the loosening condition of a hydraulic nut in sequence. After the rudder blade rotates to an angle position of 0 degree, a measuring ruler penetrates through an external inspection hole of the fully suspended twisted rudder blade to be plugged into a gap between the bushing and the shaft sleeve, and the clearance is judged whether to exceed the standard or not by using the reading of the feeler so as to measure the gap between the bushing and the shaft sleeve; a hand penetrates through an external inspection hole of the fully suspended twisted rudder blade, the grooves engraved on the bushing and the sleeve are touched, and if the grooves of the bushing and the sleeve are in the same position, the bushing is not displaced so as to measure the displacement between the bushing and the shaft sleeve; the method comprises the following steps that whether an ocean punching eye on a rudder stock and a pointer on a rudder blade are collinear or not is visually observed, if so, the relative displacement between the rudder blade and the rudder stock does not occur, and the relative displacement between the rudder stock and the rudder blade is detected; and detaching the compression plate and the fastening screw on the inspection plug, screwing off the cock, visually observing whether the pointer on the end cover of the hydraulic nut rotates, and if the pointer corresponds to the center of the inspection plug, detecting whether the hydraulic nut is loosened to finally realize the detection of the fully-suspended twisted rudder blade.
The detection method of the fully suspended twisted rudder blade has the advantages that the design of the external inspection hole on the rudder blade structure is novel, the fastening condition of the bushing shaft sleeve can be directly inspected through the hole, and the waste of the amount of a conventional design manhole cover and the like is avoided; the check plug of the rudder blade is novel in design, whether the hydraulic nut is loosened or not can be checked better and intuitively by designing transparent organic glass in the cock, the condition that the hydraulic nut is loosened after the drain plug is exposed out of the water surface by adjusting ballast water in the checking process due to the fact that the conventional design of the ship bottom drain plug (CB/T4248-2013) is avoided, and waste of manpower and material resources is avoided; the method is suitable for all projects with fully suspended twisted rudders, and has a good popularization prospect.
Drawings
FIG. 1 is a schematic structural view of a fully suspended twisted rudder blade according to the present invention;
FIG. 2 is a schematic view of the gap measurement between the bushing and sleeve of the present invention;
FIG. 3 is a schematic view of the construction of the present invention for measuring displacement between a bushing and a sleeve;
FIG. 4 is a schematic view showing the structure of the relative displacement detection between the rudder stock and the rudder blade according to the present invention;
FIG. 5 is a schematic structural view of the hydraulic nut loosening detection of the present invention;
figure 6 is a schematic view of the cock of figure 5 in disassembled configuration.
In the figure, 1, a rudder stock; 2. a sleeve; 3. a shaft sleeve; 4. a bushing; 5. a hydraulic nut; 6. an external access hole; 7. measuring a scale; 71. a first blade bar; 72. a second blade bar; 8. a groove; 9. inspecting the plug; 10. a cock; 11. a pointer; 12. opening the handle tool; 121. a hand-held portion; 122. inserting a rod; 13. punching a mark; 14. a pressure plate and a fastening bolt.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
The detection method of the fully suspended twisted rudder blade is shown in fig. 1 to 6, wherein the fully suspended twisted rudder blade comprises a rudder stock 1 and a sleeve 2 arranged outside the rudder stock, the rudder blade is connected with a ship body through the rudder stock 1, the lower part of the rudder stock 1 is sleeved with a shaft sleeve 3, the outer side of the shaft sleeve 3 is sleeved with a bush 4, the bottom of the rudder stock 1 is provided with a hydraulic nut 5, and the rudder blade is provided with an external inspection hole 6. The detection method of the fully suspended twisted rudder blade comprises the steps of measuring the gap between the bushing 4 and the shaft sleeve 3, measuring the displacement between the bushing 4 and the shaft sleeve 3, detecting the relative displacement between the rudder stock 1 and the rudder blade and detecting the loosening condition of the hydraulic nut 5 in sequence. The upper end of the sleeve 2 is welded with a structure at the tail of a ship body, the lower end of the sleeve is connected with a rudder blade through a rudder stock 1, the sleeve 2 is installed upwards from the bottom of the ship, the rudder stock 1 is installed from top to bottom, the rudder stock 1 is connected with a steering engine, the lower end of the rudder stock 1 is fastened through a shaft sleeve, a bushing and a hydraulic nut, and the rudder blade is effectively connected with the rudder blade. The pilot can rotate the rudder blade in the cab or the rudder cabin by operating the rudder machine, so that the rudder blade can ensure a certain turning angle to meet the requirement of the air route.
After the rudder blade rotates to an angle position of 0 degree, a measuring ruler 7 penetrates through an external inspection hole of the fully suspended twisted rudder blade to be plugged into a gap between the bushing 4 and the shaft sleeve 3, wherein the measuring ruler 7 is specifically a feeler, and the reading of the feeler is utilized to judge whether the gap exceeds the standard so as to measure the gap between the bushing 4 and the shaft sleeve 3; a hand passes through an external inspection hole 6 of the fully suspended twisted rudder blade, the groove 8 engraved on the bushing 4 and the sleeve 2 is touched, if the grooves 8 of the bushing 4 and the sleeve 2 are at the same position, the bushing 4 is not displaced, and the displacement between the bushing 4 and the shaft sleeve 3 is measured; the visual inspection is carried out on whether the ocean impulse mark 13 on the rudder stock 1 and the pointer on the rudder blade are collinear or not, if so, the relative displacement between the rudder blade and the rudder stock 1 does not occur, so as to detect the relative displacement between the rudder stock 1 and the rudder blade; and (3) detaching a compression plate and a fastening screw 14 on the inspection plug 9, screwing off the cock 10, visually observing whether the pointer 11 on the end cover of the hydraulic nut rotates, if the pointer 11 corresponds to the center of the inspection plug 9, detecting whether the hydraulic nut 5 is loosened to detect whether the hydraulic nut 5 is loosened, and finally realizing the detection of the fully suspended twisted rudder blade.
Further, the measuring rule 7 in the gap measuring step between the bush 4 and the sleeve 3 is a feeler that includes a first rule rod 71 and a second rule rod 72 at right angles, and the first rule rod 71 is inserted into the gap between the bush 4 and the sleeve 3 after passing through the inspection hole. The first ruler rod 71 directly penetrates through an external inspection hole to be inserted into a gap between the bushing 4 and the shaft sleeve 3, whether the gap has an over-standard requirement or not is judged through clearance gauge reading, the gap between the bushing 4 and the shaft sleeve 3 is detected, and the detection is convenient and fast.
Further, in the measuring step of the displacement between bush 4 and the axle sleeve 3, the position of bush 4 and the installation of axle sleeve 3 phase-match all is equipped with the recess, and when bush 4 did not take place the skew with axle sleeve 3, the recess of bush 4 and the recess of axle sleeve 3 linked up and are smooth recess, then explain that the bush does not take place the displacement, need not detect with the help of the instrument, only the manual work can operate the realization.
Further, the not hard up condition of hydraulic nut 5 detects the step and adopts hexagonal spanner to pull down pressure strip and fastening screw on the inspection stopper 9, is the transparent plate between cock and the contact pin 122, unscrews cock 10 through supporting the instrument of opening the handle, during specific dismouting, is equipped with two jacks on the cock 10, opens handle instrument 12 and includes holding portion 121 and be used for the inserted bar 122 that the matching inserted in two jacks, and rotatory holding portion 121 opens handle instrument 12 and drives the cock 10 rotatory in order to pull down cock 10. In the whole detection process, only the cock 10 needs to be detached, and the loosening condition of the hydraulic nut 5 can be obtained through manual visual inspection, so that the detection is convenient and fast.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (5)
1. A method for detecting a fully suspended twisted rudder blade comprises a rudder stock and a sleeve arranged outside the rudder stock, wherein the rudder blade is connected with a ship body through the rudder stock, the lower part of the rudder stock is sleeved with a shaft sleeve, the outer side of the shaft sleeve is sleeved with a bushing, the bottom of the rudder stock is provided with a hydraulic nut,
the method for detecting the fully suspended twisted rudder blade is characterized by comprising the following steps: measuring the gap between the bushing and the shaft sleeve, measuring the displacement between the bushing and the shaft sleeve, detecting the relative displacement between the rudder stock and the rudder blade and detecting the loosening condition of the hydraulic nut;
the step of measuring the clearance between the bushing and the shaft sleeve comprises the following steps: after the rudder blade rotates to an angular position of 0 degree, a measuring ruler penetrates through an external inspection hole of the fully suspended twisted rudder blade and is plugged into a gap between the bushing and the shaft sleeve, and the clearance is judged to exceed the standard by using the reading of the feeler;
the measurement steps of the displacement between the bushing and the shaft sleeve are as follows: rotating the rudder blade to an angular position of 0 degree, enabling a hand to pass through an external inspection hole of the fully suspended twisted rudder blade, touching grooves engraved on the bushing and the sleeve, and enabling the bushing not to displace if the grooves of the bushing and the sleeve are at the same position;
the relative displacement detection steps between the rudder stock and the rudder blade are as follows: rotating the rudder blade to an angular position of 0 degree, and observing whether the ocean punching eye on the rudder stock and the pointer on the rudder blade are collinear or not, wherein if the ocean punching eye and the pointer on the rudder stock are collinear, the rudder blade and the rudder stock do not generate relative displacement;
the hydraulic nut loosening condition detection steps are as follows: the rudder blade is rotated to an angular position of 0 degree, the pressing plate and the fastening screw on the inspection plug are detached, the cock is screwed off, whether the pointer on the end cover of the hydraulic nut rotates or not is visually observed, and if the pointer corresponds to the center of the inspection plug, the hydraulic nut is not loosened.
2. The method for testing a fully suspended twisted rudder blade as claimed in claim 1, wherein the measuring rule in the step of measuring the gap between the bushing and the sleeve is a feeler, the feeler includes a first rule rod and a second rule rod which are at right angles, and the first rule rod is inserted into the gap between the bushing and the sleeve after passing through the inspection hole.
3. The method for detecting the fully suspended twisted rudder blade as claimed in claim 1, wherein in the step of measuring the displacement between the bushing and the shaft sleeve, the positions where the susceptor is installed and the shaft sleeve are both provided with grooves, and when the bushing and the shaft sleeve are not deviated, the grooves of the bushing and the shaft sleeve are joined to form smooth grooves.
4. The method for detecting the fully suspended twisted rudder blade according to claim 1, wherein the hydraulic nut loosening detecting step includes the steps of detaching a pressing plate and a fastening screw on the inspection plug by using a hexagon socket wrench, and unscrewing a cock by using a matched handle opening tool.
5. The method for detecting the fully suspended twisted rudder blade as claimed in claim 4, wherein the cock is provided with two insertion holes, the release handle tool comprises a holding portion and insertion rods for being inserted into the two insertion holes, and the holding portion is rotated to drive the cock to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011145422.XA CN112208729A (en) | 2020-10-23 | 2020-10-23 | Detection method of fully-suspended twisted rudder blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011145422.XA CN112208729A (en) | 2020-10-23 | 2020-10-23 | Detection method of fully-suspended twisted rudder blade |
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| CN112208729A true CN112208729A (en) | 2021-01-12 |
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| CN202011145422.XA Pending CN112208729A (en) | 2020-10-23 | 2020-10-23 | Detection method of fully-suspended twisted rudder blade |
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Application publication date: 20210112 |