CN114084310B - Installation method of bearing gangplank - Google Patents
Installation method of bearing gangplank Download PDFInfo
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- CN114084310B CN114084310B CN202111610260.7A CN202111610260A CN114084310B CN 114084310 B CN114084310 B CN 114084310B CN 202111610260 A CN202111610260 A CN 202111610260A CN 114084310 B CN114084310 B CN 114084310B
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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Abstract
The invention discloses an installation method of a bearing springboard, relates to the technical field of ship springboard installation, and solves the technical problem that the installation of a ship springboard in the related technology has the defect of hinge installation precision. The springboard comprises a springboard body and at least two hinges, the hinges comprise a first eye plate, a second eye plate and hinge original shafts, and the installation method comprises the following steps: all the first eye plates are welded on the springboard body, and boring processing is carried out on the first eye plates so as to control the coaxiality of the shaft holes of the first eye plates; after the first eye plate is subjected to boring processing, the second eye plate is hinged with the first eye plate; and after the second eye plate is hinged with the first eye plate, welding the second eye plate with the ship body. The first eye plate of a plurality of hinges is welded on the springboard body, all the first eye plates are bored, the coaxiality of the plurality of hinges is guaranteed, the processing is flexible, an uncontrollable hypersonic welding technology is not needed, and the defect of accurate installation of a large-scale bearing type springboard of a ship is overcome.
Description
Technical Field
The invention relates to the technical field of ship springboard installation, in particular to an installation method of a bearing springboard.
Background
The various types of ships are applied to the springboard, and the springboard is used as key channel equipment, is important to bear and has high requirements on installation quality. One of the important difficulties in the installation of the springboard is the installation accuracy, and for the installation accuracy of the springboard, the installation accuracy and the coaxiality of the springboard hinge are mainly determined.
Related art mainly has two kinds of processes to the installation of springboard hinge, one kind: firstly, the hinge is assembled and welded on the shipway, and then secondary boring is carried out on the shipway by using a boring machine to ensure the coaxiality of the hinge, but the requirement on a working environment area is high due to the use of a large-scale boring machine, so that the simultaneous machining of all hinge holes is not facilitated, and on the other hand, the installation precision cannot be ensured if the hinge holes are respectively machined.
The other one is as follows: all the hinge holes are machined in the inner field, then the hinge is installed on the slipway by means of a dummy shaft tool, the coaxiality of the hinge is guaranteed through the dummy shaft and process control, but the actual welding conditions of a plurality of hinges are inconsistent, and operators are required to weld the deviated welding seams in the reverse direction, so that the process problem is not solved, the ultrahigh requirements are provided for the welding level of the operators, and the installation accuracy is uncontrollable.
Disclosure of Invention
The application provides an installation method of a bearing springboard, which solves the technical problem that the installation of a ship springboard in the related technology has the defect of hinge installation precision.
The application provides a method for installing a bearing gangboard, wherein the gangboard comprises a gangboard body and at least two hinges, the hinges comprise a first eye plate fixedly connected with the gangboard body, a second eye plate fixedly connected with a ship body and hinge original shafts rotatably arranged on the first eye plate and the second eye plate, and the method for installing the bearing gangboard comprises the following steps: all the first eye plates are welded on the springboard body, and boring processing is carried out on the first eye plates so as to control the coaxiality of the shaft holes of the first eye plates; after the first eye plate is subjected to boring processing, the second eye plate is hinged with the first eye plate; and after the second eye plate is hinged with the first eye plate, welding the second eye plate with the ship body.
Optionally, before the second eye plate is hinged to the first eye plate, a hull center line is marked on a hull deck and is marked with ocean rushes, and a springboard center line is marked on the springboard body and is marked with ocean rushes.
Optionally, the second eye plate is processed in an inner field and installed on a slipway, and the second eye plate is provided with a margin;
after the first eye plate is bored and before the second eye plate is hinged with the first eye plate, the method comprises the following steps:
welding positioning stay wire frames on two sides of a ship body, finding out the central line of a preset shaft hole of a hinge by using a laser theodolite, connecting a tow with stay wires of the positioning stay wire frames on the two sides, and arranging the tow at the position of the central line of the preset shaft hole;
the second eye plate is provided with a sample plate, the allowance to be cut in the length direction is determined according to the tows through the sample plate, the second eye plate is cut according to the allowance to be cut in the length direction, and a welding groove is machined in the second eye plate.
Optionally, before the hinging the second ocular plate with the first ocular plate, further comprising:
arranging an installation pier and a jack arranged on the installation pier in a hull region, using a crane to drop the springboard body on the installation pier and perform coarse positioning, and adjusting the shaft hole of the first eye plate to be flush with the central line of a preset shaft hole;
after the tows are arranged at the position of the central line of the preset shaft hole, the tows are tensioned after passing through the shaft hole of the first eye plate, the screw buckle pulling code is installed on the ship body, and the jack and the screw buckle pulling code are adjusted until the central line of the shaft hole of the first eye plate is coincided with the tows and the springboard is closed, so that the tows are attached to the ship body in a sealing mode.
Optionally, articulating the second eye plate with the first eye plate comprises:
the first eye plate and the second eye plate are hinged through an expansion mandrel tool, and the expansion mandrel tool comprises a mandrel body, an expansion sleeve arranged outside the mandrel body, a base plate arranged on one side of the mandrel body and a nut;
and (4) after the second eye plate is welded with the ship body, removing the expansion mandrel tool, and replacing the original hinge shaft.
Optionally, after the first eye plate and the second eye plate are hinged by the expansion mandrel tool, and the second eye plate is welded to the hull, the method further includes:
a triangular plate is arranged and is respectively in spot welding with the ship body and the second eye plate so as to ensure that the second eye plate is vertical to the ship body;
and after the triangular plate is arranged, welding the second eye plate and the ship body, checking whether a welding seam supported by the back of the deck of the ship body cracks or not during welding, checking whether the vertical angle between the second eye plate and the ship body changes or not, and correcting if the second eye plate cracks or changes.
Optionally, after welding the second eye plate to the hull and before removing the expansion mandrel fixture, the method further includes:
stress is relieved by hammering;
after demolising expansion mandrel frock, and before the original dress axle of reloading hinge, still include:
flaw detection is carried out on the welding seam of the second eye plate;
after the hinge original shaft is replaced, the method also comprises the following steps:
the springboard is opened and closed by a crane to check the rotation of the hinge.
Optionally, after the second eye plate is welded to the ship hull, the method further includes:
a groove body is arranged on the ship body sealing plate, and a sealing piece is arranged in a groove cavity of the groove body to seal the ship body and the springboard when the springboard is closed.
Optionally, the first eye plate comprises a double-eye plate, the second eye plate comprises a single-eye plate, the double-eye plate comprises two first plates provided with shaft holes, the single-eye plate is arranged between the two first plates, and the single-eye plate and the double-eye plate jointly form a mounting hole for an original hinge mounting shaft.
Optionally, the second eye plate is fixedly connected with the bow of the ship body.
The beneficial effect of this application is as follows: the application provides an installation method of a bearing gangplank, which is characterized in that the gangplank is installed on a ship body through hinges, a gangplank body is rotatably connected with the ship body through a first eye plate, a second eye plate and a hinge original installation shaft, and a plurality of hinges are involved; the method comprises the steps of welding first eye plates of a plurality of hinges on a springboard body, boring all the first eye plates, controlling the coaxiality of shaft holes of all the first eye plates, ensuring the coaxiality of the hinges, then hinging a second eye plate and the first eye plates, and then mounting the second eye plate and the first eye plates together on a ship body, wherein the second eye plate is welded with the ship body; compared with the mode of carrying out hinge assembly welding and boring on the original slipway by using a large-scale boring machine, the method can carry out boring processing on the first eye plate on the springboard body in an inner field, so that the coaxiality of the shaft hole of the first eye plate reaches the design requirement, the processing is flexible, and the precision requirement can be favorably met; compared with the original mode of a false shaft tool at the slipway, the method ensures the coaxiality through boring, overcomes the requirement of the ultrahigh reverse welding adjustment technology of operators, and is beneficial to ensuring the installation precision; the installation method realizes the installation of the gangplank and solves the defect of accurate installation of the large-scale bearing type gangplank of the ship.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic view illustrating an installation of a springboard in an installation method of a load-bearing springboard according to the present application;
FIG. 2 is a schematic view illustrating the installation of a hinge in the installation method of the load-bearing gangplank provided by the present application;
FIG. 3 is a schematic view of a seal in a method of installing a load ramp according to the present application;
fig. 4 is a schematic flow chart of an installation method of a load-bearing gangboard provided in the present application.
The attached drawings are marked as follows: the method comprises the following steps of 1-ship body, 2-lifting rope, 3-jack, 4-mounting pier, 5-springboard, 6-springboard body, 7-first eye board, 8-second eye board, 9-hinge original shaft, 10-ship body sealing board, 11-groove body and 12-sealing piece.
Detailed Description
The embodiment of the application provides an installation method of a bearing springboard, and solves the technical problem that the installation of a ship springboard in the related technology has the defect of hinge installation precision.
In order to solve the technical problems, the general idea of the embodiment of the present application is as follows:
a method for installing a bearing gangboard, wherein the gangboard comprises a gangboard body and at least two hinges, the hinges comprise a first eye plate fixedly connected with the gangboard body, a second eye plate fixedly connected with a ship body and hinge original installation shafts rotatably arranged on the first eye plate and the second eye plate, and the method for installing the bearing gangboard comprises the following steps: all the first eye plates are welded on the springboard body, and boring processing is carried out on the first eye plates so as to control the coaxiality of the shaft holes of the first eye plates; after the first eye plate is subjected to boring processing, the second eye plate is hinged with the first eye plate; and after the second eye plate is hinged with the first eye plate, welding the second eye plate with the ship body.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example 1
Referring to fig. 1, 2 and 4, fig. 1 shows that a diving board 5 includes a diving board body 6 and at least two hinges (one hinge is shown in the drawing, it can be understood that a greater number of hinges is beneficial to stability of rotatable connection), and fig. 2 shows that the hinges include a first eye plate 7 fixedly connected with the diving board body 6, a second eye plate 8 fixedly connected with a ship hull 1, and a hinge original axis 9 rotatably mounted on the first eye plate 7 and the second eye plate 8. With reference to fig. 4, the method for installing the load-bearing gangplank includes: all the first eye plates 7 are welded on the springboard body 6, and the first eye plates 7 are bored to control the coaxiality of the shaft holes of the first eye plates 7; after the first eye plate 7 is subjected to boring processing, the second eye plate 8 is hinged with the first eye plate 7; after the second eye plate 8 is hinged to the first eye plate 7, the second eye plate 8 is welded to the hull 1.
The mounting method is to mount the gangway 5 to the hull 1 by a hinge. Specifically, the springboard body 6 is rotatably connected with the ship body 1 through a first eye plate 7, a second eye plate 8 and a hinge original installation shaft 9, and a plurality of hinges are involved. The method comprises the steps of welding the first eye plates 7 of the hinges on the springboard body 6, boring all the first eye plates 7, controlling the coaxiality of shaft holes of all the first eye plates 7, ensuring the coaxiality of the hinges, then hinging the second eye plates 8 and the first eye plates 7, installing the second eye plates 8 and the first eye plates 7 together on the ship body 1, and welding the second eye plates 8 and the ship body 1.
Compared with the mode of carrying out hinge welding and boring on the original slipway by using a large-scale boring machine, the method can be used for boring the first eye plate 7 on the springboard body 6 in an inner field, so that the coaxiality of the shaft hole of the first eye plate 7 can meet the design requirement, the processing is flexible, and the precision requirement can be favorably met.
Compared with the original mode of a false shaft tool at the slipway, the method ensures the coaxiality through boring, overcomes the requirement of the ultrahigh reverse welding adjustment technology of operators, and is favorable for ensuring the installation precision.
The installation method realizes the installation of the springboard 5 and solves the defect of accurate installation of the large-scale bearing type springboard 5 of the ship.
Optionally, the diving board 5 is installed at the position of the bow of the ship body, i.e. the second eye board 8 is fixedly connected with the bow of the ship body.
Optionally, as shown in fig. 2, the first ocular plate 7 includes a double-ocular plate, the second ocular plate 8 includes a single-ocular plate, the double-ocular plate includes two first plates provided with axle holes, the single-ocular plate is provided between the two first plates, and the single-ocular plate and the double-ocular plate together form a mounting hole for the hinge original axle 9. Optionally, the single-eye plate is made of steel, and the double-eye plate is made of aluminum alloy. After the gangboard 5 is installed on the ship body 1, the original hinge installation shaft 9 to which the hinge belongs is installed on the installation hole, and as shown in fig. 2, one side of the original hinge installation shaft is fixed through a nut and is provided with a corresponding gasket and a corresponding lining structure.
In other embodiments, both the first ocular plate 7 and the second ocular plate 8 may be provided as a monocular plate, or the first ocular plate 7 may be a monocular plate, the second ocular plate 8 may be a binocular plate, and so on.
In the installation method provided by this embodiment, after the second eye plate 8 is hinged to the first eye plate 7, the second eye plate 8 is welded to the hull 1, wherein the hinge connection between the first eye plate 7 and the second eye plate 8 may be achieved by a hinge original installation shaft 9, or by a hinge shaft as a transition piece, and the hinge original installation shaft 9 is subsequently detached and installed.
Example 2
This embodiment is further described based on the method for installing a load-bearing gangboard provided in embodiment 1. The present embodiment is illustrated as being mounted on the bow of a ship.
The installation method of the bearing springboard comprises the preparation work before installation.
In the preparation before installation, after the manufacture of the stem springboard body 6 is completed, the first eye plate 7 is welded on the stem springboard body 6, and then the first eye plate 7 is bored in an inner field, so that the coaxiality of the shaft holes of the first eye plate 7 meets the design requirement.
The second eye plate 8 is processed in the inner field and is arranged on a shipway. Firstly, a plasma numerical control machine tool is adopted for blanking, allowance needs to be reserved in the length direction during blanking so as to correct errors during installation of a slipway, then the circle center position of the shaft hole of the second eye plate 8 is marked, and then the shaft hole is machined on a milling machine.
The springboard 5 is heavy equipment, and the installation time is before the construction of a ship shafting. The welding of the outer plate of the bow part hull 1 is required to be completed before the installation of the bow springboard 5, and in order to ensure the water tightness after the installation of the springboard 5, the planeness of the hull 1 surface contacted with the springboard 5 when the springboard 5 is folded is required to reach the design index. In addition, the center line of the hull 1 is marked on the deck (also called a panel) of the bow hull 1 and is marked with ocean punch, and the center line of the springboard 5 is marked on the front and back sides of the springboard body 6 and is marked with ocean punch.
The method for installing the bearing springboard also comprises the step of positioning the second eye plate 8 of the ship body 1.
During the positioning work of the second eye plate 8 of the ship body 1, positioning pull wire frames are welded on two sides of the bow of the ship body, a laser theodolite is used for finding out the center line of a hinge shaft hole of the springboard 5, namely the center line of a preset shaft hole of a hinge, the center line is projected on the positioning pull wire frames on the left side and the right side, a hinge centering tool is installed, a 0.5mm steel wire penetrates through the pull wires on the two sides, then the hinge centering tool is adjusted, and the accurate axis positioning is ensured.
Before the second eye plate 8 is installed on the ship body 1, a template consistent with the shape of the ship body is marked according to a real object. And cutting and welding the allowance of the second eye plate 8 according to the size of the sample plate, and after the allowance to be cut in the length direction is cut, processing a welding groove on site and positioning the second eye plate 8 by spot welding.
Wherein the hinge centering instrument specifically indicates, plays spacing, and self can carry out the instrument of position fine setting to the steel wire, does benefit to the steel sheet that is equipped with the through-hole, and the steel sheet sets up the threaded rod of fine setting all around, and this through-hole is used for the steel wire to pass, prescribes a limit to the spatial position of steel wire through whole regulation and control through-hole position to make the steel wire connect at both ends and draw the line frame, self by under the taut state in both sides location, can with the hinge predetermine the stable coincidence of shaft hole central line. Wherein, the steel wire is one form of the silk bundle, and other forms such as iron wire can also be adopted.
The mounting method of the bearing springboard also comprises the positioning work of the bow springboard 5.
In the positioning work of the bow springboard 5, the mounting pier 4 is arranged in the bow area of the ship body, the top height of the mounting pier 4 is about 500mm below the hinge axis of the springboard 5 as a preferred choice, and then the skid and the jack 3 are placed on the mounting pier 4.
As shown in fig. 1, fig. 1 shows a lifting rope 2, a jump board 5 is dropped on a mounting pier 4 by using a crane and roughly positioned, a shaft hole of a first eye plate 7 is adjusted to be approximately flush with a preset shaft hole center line, and a steel wire is pulled tightly after passing through the shaft hole of the first eye plate 7. The middle and two sides of the bow of the ship are respectively provided with a turnbuckle puller. Adjusting a jack 3 and a turnbuckle puller under the springboard 5, and accurately positioning the springboard 5 to ensure that the central line of a hinge hole of the springboard 5 is superposed with a steel wire, and the sealing surface of the springboard 5 (namely the plane which is jointed with the sealing rubber on the ship body 1 when the springboard 5 is closed) is horizontal. Wherein, the sealing surface of the springboard 5 is horizontal, which lays a foundation for the sealing and jointing of the rear springboard 5 and the ship body 1 when the rear springboard is closed.
The mounting method of the bearing springboard further comprises the step of mounting the stem springboard 5 to work by using the expansion mandrel tool. The expansion mandrel tool comprises a mandrel body, an expansion sleeve arranged outside the mandrel body, a base plate arranged on one side of the mandrel body and a nut.
And (3) using an expansion mandrel tool to install the bow springboard 5, removing the steel wire and installing the expansion mandrel tool in the hinge. Firstly, installing gaskets on two sides of the shaft hole of the second eye plate 8, then enabling the mandrel body and the expansion sleeve to penetrate through the shaft hole, placing a base plate and a nut on the other side, adjusting the positions of the gaskets and the expansion sleeve after the mandrel body and the nut are screwed, enabling the circle center of each gasket to be consistent with the center of the shaft hole, placing the three expansion sleeves in an equal part (taking an example that the springboard 5 is connected with the ship body 1 through three hinges), and screwing the mandrel body. At the moment, the expansion sleeve eliminates the radial gap of the hinge shaft hole, and the gasket eliminates the axial gap between the second eye plate 8 and the first eye plate 7, so that the springboard 5 is hinged into a firm whole, and the installation precision is guaranteed.
The mounting method of the bearing springboard also comprises the welding and deformation control work of the second eye plate 8.
During the welding and deformation control work of the second eye plate 8, after the expansion mandrel tool is installed, the tool is strengthened for the second eye plate 8, and then the second eye plate 8 is welded. Because the springboard 5 is a load-bearing device, the hinges of the springboard 5 are generally made of high-strength and thick materials. The second eye plate 8 of the ship hinge is high-strength steel with the thickness of 30mm, the welding groove is deep, and the welding heat is large, so that corresponding welding deformation control measures need to be taken.
The welding deformation control measures comprise that a triangular plate is arranged, the triangular plate is respectively in spot welding with the ship body 1 and the second eye plate 8 to ensure that the second eye plate 8 is perpendicular to the ship body 1, the stability of the second eye plate 8 during welding is enhanced through the triangular plate, and the triangular plate is dismantled at intervals after installation;
during welding construction, all the hinges need to be welded simultaneously and welded in sections, and after each welding seam is welded, the temperature of the welding seam to be welded is cooled to the corresponding temperature, and then the welding seam can be welded next;
after the triangular plate is arranged, the second eye plate 8 and the ship body 1 are welded, whether a welding seam supported by the back of a deck of the ship body 1 is cracked or not is checked during welding, whether the vertical angle between the second eye plate 8 and the ship body 1 is changed or not is checked, if the vertical angle is cracked or changed, correction is carried out, the triangular plate is further strengthened after correction, and then welding operation is carried out. A method for correcting the vertical angle of welded seam includes such steps as immediately stopping welding when the vertical angle is changed, and cooling the welded seam and welding it on its back.
The mounting method of the bearing springboard also comprises the operation of replacing the hinge original shaft 9 and the bush.
During the work of replacing the original hinge shaft 9 and the bush, after the welding work of the second eye plate 8 is finished, stress is eliminated in a hammering mode, and the expansion mandrel tool is detached after a period of time, such as 24 hours. And (5) flaw detection is carried out on the welding seam of the second eye plate 8, and the original hinge shaft 9 is replaced after the welding quality is qualified.
After the original installation shaft is installed, the springboard 5 is opened and closed by using the crane, the operation is repeated for a plurality of times, and whether the hinge rotates smoothly is checked, so that the installation and welding quality of the hinge of the springboard 5 is confirmed.
The installation method of the bearing gangboard also comprises the sealing work of the gangboard 5.
In the sealing operation of the springboard 5, referring to fig. 3, a steel groove body 11 is designed on the ship hull sealing plate 10, the groove body 11 is provided with a groove cavity for accommodating the sealing member 12, and an opening of the groove cavity is arranged towards the springboard 5. And a sealing element 12 such as a rubber sealer is arranged in the groove, and when the springboard 5 is completely folded, the sealing surface of the springboard 5 is tightly attached and pressed with the rubber sealer, so that the sealing of the bow springboard 5 is realized.
Regarding the installation of the groove body 11, specifically, after the hinge of the springboard 5 is welded, a steel groove is positioned on the bow sealing board, stop blocks are spot-welded on two sides of the preset position of the groove body 11, and then the groove body 11 is welded. During welding, the two sides are welded simultaneously and are discontinuously and symmetrically welded to control welding deformation.
After a period of time, such as 24 hours, the stop block is removed and the seal 12 is installed in the groove. And after the installation is finished, closing the springboard 5 to perform a flushing test, and observing whether water leaks or water marks appear on the reverse side of the test part, thereby inspecting the sealing property of the springboard 5.
By the method for installing the bearing gangplank, after construction is completed, through a wharf mooring test and a loading test, the running condition of the gangplank 5 is good, the sealing performance is achieved, the engineering acceptance is qualified once, and the problem of sealing performance after installation in the difficult point of installing the gangplank 5 is solved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for installing a bearing gangboard, which is characterized in that the gangboard comprises a gangboard body and at least two hinges, the hinges comprise a first eye plate fixedly connected with the gangboard body, a second eye plate fixedly connected with a ship body and hinge original installation shafts rotatably arranged on the first eye plate and the second eye plate, and the method for installing the bearing gangboard comprises the following steps:
all the first eye plates are welded on the springboard body, and the first eye plates are bored to control the coaxiality of the shaft holes of the first eye plates;
after the first eye plate is subjected to boring processing, the second eye plate is hinged with the first eye plate;
and after the second eye plate is hinged with the first eye plate, welding the second eye plate with the ship body.
2. The installation method of claim 1, wherein prior to articulating the second eye plate with the first eye plate, a hull centerline is marked on the hull deck and marked for ocean thrust, and a diving board centerline is marked on the diving board body and marked for ocean thrust.
3. The method of installation of claim 1, wherein the second eye plate is machined on the inner site and installed on the shipway, the second eye plate having a margin;
after the boring process of the first eyeplate and before the articulating the second eyeplate with the first eyeplate, comprising:
welding positioning stay wire frames on two sides of a ship body, finding out the central line of a preset shaft hole of the hinge by using a laser theodolite, connecting a tow with stay wires of the positioning stay wire frames on the two sides, and arranging the tow at the central line position of the preset shaft hole;
the second eye plate is provided with a sample plate, the allowance to be cut in the length direction is determined according to the tows passing through the sample plate, the second eye plate is cut according to the allowance to be cut in the length direction, and a welding groove is machined in the second eye plate.
4. The method of installing as defined in claim 3, wherein prior to articulating the second eyeplate with the first eyeplate, further comprising:
arranging an installation pier and a jack arranged on the installation pier in the hull region, using a crane to drop the springboard body on the installation pier and perform coarse positioning, and adjusting the shaft hole of the first eye plate to be flush with the central line of the preset shaft hole;
after the tows are arranged at the position of the central line of the preset shaft hole, the tows penetrate through the shaft hole of the first eye plate and then are tensioned, a turnbuckle pull code is installed on the ship body, and the jack and the turnbuckle pull code are adjusted until the central line of the shaft hole of the first eye plate is coincided with the tows and the springboard is closed and then is attached to the ship body in a sealing mode.
5. The method of installing as claimed in claim 1 or 4, wherein said articulating said second eyeplate with said first eyeplate comprises:
the first eye plate and the second eye plate are hinged through an expansion mandrel tool, and the expansion mandrel tool comprises a mandrel body, an expansion sleeve, a base plate and a nut, wherein the expansion sleeve is arranged outside the mandrel body;
and after the second eye plate is welded with the ship body, the expansion mandrel tool is disassembled, and the original hinge shaft is replaced.
6. The method of installing according to claim 5, wherein after the first eye plate and the second eye plate are hinged by an expansion mandrel tool and the second eye plate is welded to the hull, the method further comprises:
setting a triangular plate, wherein the triangular plate is respectively in spot welding with the ship body and the second eye plate so as to ensure that the second eye plate is vertical to the ship body;
and after the triangular plate is arranged, welding the second eye plate and the ship body, checking whether a welding seam supported by the back of the deck of the ship body cracks or not during welding, checking whether the vertical angle between the second eye plate and the ship body changes or not, and correcting if the second eye plate cracks or changes.
7. The installation method of claim 5, wherein after said welding said second eye plate to said hull and before said removing said expansion mandrel fixture, further comprising:
stress is relieved by hammering;
after demolish expansion dabber frock, just before the repacking the hinge original shaft, still include:
flaw detection is carried out on the welding seam of the second eye plate;
after the hinge original installation shaft is replaced, the method further comprises the following steps:
and opening and closing the springboard by using a crane to check the rotation of the hinge.
8. The method of installation according to claim 1, wherein after welding the second eye plate to the hull, further comprising:
and a groove body is arranged on the ship body sealing plate, and a sealing piece is arranged in a groove cavity of the groove body so as to seal the ship body and the springboard when the springboard is closed.
9. The method of mounting of claim 1, wherein the first eye plate comprises a double eye plate, the second eye plate comprises a single eye plate, the double eye plate comprises two first plates with axial holes, the single eye plate is arranged between the two first plates, and the single eye plate and the double eye plate together form a mounting hole for the hinge original axis.
10. The method of installation according to claim 1 or 9 wherein the second eye plate is fixedly connected to the hull bow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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