CN112389589B - Transverse small tip structure of cargo hold of self-discharging ship and manufacturing method - Google Patents
Transverse small tip structure of cargo hold of self-discharging ship and manufacturing method Download PDFInfo
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- CN112389589B CN112389589B CN202011115903.6A CN202011115903A CN112389589B CN 112389589 B CN112389589 B CN 112389589B CN 202011115903 A CN202011115903 A CN 202011115903A CN 112389589 B CN112389589 B CN 112389589B
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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
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/04—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods solid
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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
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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
Abstract
The invention discloses a transverse small pointed top structure of a self-unloading ship cargo hold and a manufacturing method thereof, wherein the transverse small pointed top structure comprises a pair of inclined plates for forming a pointed top and a pair of hanging beam lining plates which are connected to the inner side surface of the pointed top and are arranged vertically downwards, the lower ends of the hanging beam lining plates are connected with a hopper door installation panel for installing a cargo hold hopper door, three rectangular windows are arranged on the hopper door installation panel at intervals, the four corners of the rectangular windows are provided with round corners, and the lower ends of the hanging beam lining plates are respectively connected to the positions between two adjacent rectangular windows on the hopper door installation panel; the two sides of the joint of the hanging beam lining plates on the bucket door mounting panel are respectively provided with a plurality of waist-shaped holes, the number of the waist-shaped holes is used for mounting the bucket door of the cargo hold, and the waist-shaped holes are used for adjusting the position of the bucket door when the bucket door is mounted. The invention facilitates the construction of the transverse small pointed top and is beneficial to the high-precision installation of the hopper door.
Description
Technical Field
The invention relates to the technical field of ship design and manufacture, in particular to a transverse small pinnacle structure of a self-discharging ship cargo hold and a manufacturing method thereof.
Background
A self-dumping ship is a dry bulk transport ship having a special cargo hold structure and a dumping structure, which is provided with a dumping device between the bottom of the cargo hold and the bottom of the ship, and which can unload in a continuous conveying manner. The self-unloading ship can control the unloading operation in a centralized way, and high-speed automatic unloading is realized.
The 40000 ton self-discharging ship is a ship type which is independently developed by me, and has a lot of differences in structure compared with other self-discharging ships. In a 40000-ton self-discharging ship, a transverse small tip is arranged at the bottom of a cargo hold of the self-discharging ship, the transverse small tip at the bottom of the cargo hold of the self-discharging ship mainly realizes two functions, namely a funnel is formed with the longitudinal tip of the cargo hold, so that cargo is conveniently shunted to a cargo hold hopper door to form a discharging channel, and the other function is used as an installation supporting structure of the cargo hold discharging hopper door to facilitate the installation of the cargo hold hopper door.
The design of the transverse small pointed top structure directly influences the convenience of construction and the safety of the structure, and the following factors are considered in important points:
firstly, the structure is as simple as possible, under the prerequisite of guaranteeing little pinnacle yield and buckling strength, leaves the operating space of convenient construction (like welding operation) as far as possible in little pinnacle inside.
And secondly, the small tip structure is convenient for installing the hopper door.
Disclosure of Invention
In order to solve the problems, the invention provides a transverse small pointed top structure of a cargo hold of a self-discharging ship and a manufacturing method thereof, aiming at facilitating the construction of the transverse small pointed top and facilitating the high-precision installation of a hopper door. The specific technical scheme is as follows:
a transverse small pointed top structure of a cargo hold of a self-discharging ship comprises a pair of inclined plates for forming a pointed top, and a pair of hanging beam lining plates which are connected to the inner side surface of the pointed top and are arranged vertically downwards, wherein the lower ends of the hanging beam lining plates are connected with a hopper door installation panel for installing a cargo hold hopper door, three rectangular windows are arranged on the hopper door installation panel at intervals, four corners of each rectangular window are provided with round corners, and the lower ends of the hanging beam lining plates are respectively connected to the positions between two adjacent rectangular windows on the hopper door installation panel; the two sides of the joint of the hanging beam lining plates on the bucket door mounting panel are respectively provided with a plurality of waist-shaped holes, the number of the waist-shaped holes is used for mounting the bucket door of the cargo hold, and the waist-shaped holes are used for adjusting the position of the bucket door when the bucket door is mounted.
Preferably, the included angle between the pair of inclined plates forming the pointed top is 60-90 degrees.
Preferably, before the cargo compartment hopper door is installed, the hopper door installation panel is connected with the hanging beam lining plate in a spot welding mode.
When the position of the hopper door mounting panel is further adjusted during mounting, spot welding can be removed, and the position of the hopper door mounting panel can be adjusted and then spot welding and welding reinforcement can be carried out again.
Preferably, the transverse small pointed top structure of the cargo hold of the self-discharging ship is formed by adopting finite element analysis software to perform strength calculation and size optimization.
Preferably, a layer of wear-resistant plate is paved on the outer side surface of the pointed top.
Preferably, two sides of the hanging beam lining plate are provided with side rib plates connected with the bucket door mounting panel.
A method for manufacturing a transverse small pointed top structure of a cargo hold of a self-discharging ship comprises the following steps:
(1) three-dimensional design of a transverse small pointed top structure: according to the structure and the size of the cargo hold of the self-unloading ship, three-dimensional design of a transverse small pinnacle structure of the cargo hold of the self-unloading ship is carried out by adopting three-dimensional CAD software to form a transverse small pinnacle three-dimensional CAD drawing;
(2) designing a steel plate blanking drawing: generating a steel plate blanking drawing of an inclined plate, a hanging beam lining plate, a hopper door mounting panel and a side rib plate in the transverse small pointed top structure according to the transverse small pointed top three-dimensional CAD drawing; the unloading device comprises a hanging beam lining plate, a hopper door mounting panel and a side reinforcing plate, wherein the hanging beam lining plate, the hopper door mounting panel and the side reinforcing plate form a blanking graph according to theoretical sizes, correction allowance is reserved on the side face, which is in contact with the inclined wall at the bottom of a cargo hold of the self-discharging ship, of an inclined plate, and the rest side faces form the blanking graph according to the theoretical sizes;
(3) steel plate typesetting and purchasing: typesetting the blanking parts by using typesetting software according to the blanking drawing and the production quantity of the transverse small pinnacle structure to obtain a typesetting cutting drawing of steel plate blanking and the quantity of steel plates to be purchased, and purchasing the steel plates according to the quantity of the steel plates;
(4) cutting and blanking of a steel plate: cutting and blanking the steel plate into the inclined plate, the hanging beam lining plate, the bucket door mounting panel and the side rib plate by adopting a numerical control plasma cutting machine according to the typesetting cutting diagram of the steel plate blanking;
(5) assembling and welding a transverse small pointed top structure: welding the inclined plate, the hanging beam lining plate and the side reinforcing plate together to form a transverse small pointed top component; the hopper door mounting panel is not welded on the transverse small pointed top component temporarily;
(6) calibrating the installation position of the transverse small pinnacle structure: marking the installation position lines of the transverse small pointed top structures along the longitudinal direction of the ship body at the inclined wall part at the bottom of the cargo hold of the self-discharging ship;
(7) three-dimensional scanning measurement of the inclined wall at the bottom of the cargo hold of the self-discharging ship: adsorbing a cylindrical magnet on the inclined wall at the bottom of the cargo hold of the self-unloading ship, aligning the central axis of the cylindrical magnet with the installation position line, and then performing three-dimensional laser scanning measurement on the inclined wall part at the bottom of the cargo hold of the self-unloading ship needing to be provided with the transverse small pointed top structure and the cylindrical magnet together by adopting a three-dimensional laser scanning measuring instrument to obtain three-dimensional profile data of the inclined wall part at the bottom of the cargo hold of the self-unloading ship needing to be provided with the transverse small pointed top structure;
(8) three-dimensional modeling of the inclined wall at the bottom of the cargo hold of the self-unloading ship: according to three-dimensional profile data of an inclined wall part at the bottom of a self-unloading ship cargo hold of which a transverse small pointed top structure needs to be installed, measured by a three-dimensional laser scanning measuring instrument, three-dimensional modeling is carried out through three-dimensional software to form a three-dimensional sheet body of the inclined wall part at the bottom of the self-unloading ship cargo hold of which the transverse small pointed top structure needs to be installed, a cross section perpendicular to the three-dimensional sheet body is made in the three-dimensional software, the cross section passes through an intersection point of a central axis of a cylindrical magnet and the three-dimensional sheet body, secondary three-dimensional design of an inclined plate is carried out by taking the cross section as a symmetrical plane, and an inclined plate entity with thickness is formed, and a side surface;
(9) correcting and processing the side surface of the inclined plate: fixing the transverse small pointed top assembly on a positioning tool by adopting a numerical control three-axis numerical control machine tool and the positioning tool, then correcting and processing the side surface of the inclined plate in the transverse small pointed top assembly, wherein the correction allowance is reserved on the side surface, and the secondary three-dimensional designed side surface of the inclined plate in the step (8) is used as a path of processing feed during correction processing so as to realize accurate fitting of the side surface of the inclined plate and the inclined wall at the bottom of the cargo hold of the self-unloading ship when the transverse small pointed top structure is installed;
(10) installation of a transverse small pointed top structure: and spot welding the bucket door mounting panel to the transverse small pointed top assembly, then mounting the bucket door mounting panel and the transverse small pointed top assembly together to a preset mounting position at the bottom of the cargo hold of the self-unloading ship, and welding after aligning a mounting position line.
As a further improvement of the invention, the number of the cylindrical magnets is two, the cylindrical magnets are respectively provided with a laser pen and a digital display laser ranging pen, the laser projection direction of the digital display laser ranging pen is vertical to the central axis of the cylindrical magnets, the laser projection direction of the laser pen is vertical to the laser projection direction of the digital display laser ranging pen, and the laser pen is rotatably arranged on the plane of the central axis of the cylindrical magnets through a hinge shaft; the cylindrical magnet is also provided with a laser receiving plane, and the laser receiving plane is parallel to the laser projection direction of the digital display laser ranging pen; and the two cylindrical magnets are used for installing two adjacent transverse small pointed top structures at the bottom of the cargo hold of the self-discharging ship at accurate intervals.
In the invention, the method for accurately installing the two adjacent transverse small pointed top structures at intervals by adopting the two cylindrical magnets comprises the following steps:
s1, mounting of a first cylindrical magnet: installing a first cylindrical magnet at the first installation position line according to the installation position lines of the transverse small pointed top structures marked in the step (6), and enabling a laser receiving plane on the first cylindrical magnet to face one side of a second installation position line adjacent to the first installation position line; rotating the laser pen on the first cylindrical magnet and observing whether the laser of the laser pen is completely projected on the first installation position line in the rotating process, and adjusting if the laser is deviated;
s2, mounting of a second cylindrical magnet: installing a second cylindrical magnet at a second installation position line adjacent to the first installation position line, and enabling a digital display laser ranging pen on the second cylindrical magnet to point to a laser receiving plane of the first cylindrical magnet; rotating the laser pen on the second cylindrical magnet and observing whether the laser of the laser pen is completely projected on the second installation position line in the rotating process, and adjusting if the laser is deviated;
s3, laser ranging and correcting of two adjacent mounting position lines: obtaining distance data of two adjacent installation position lines according to the distance from a digital display laser ranging pen on a second cylindrical magnet to a laser receiving plane of the first cylindrical magnet and the structural sizes of the first cylindrical magnet and the second cylindrical magnet, correcting the second installation position line if the distance between the two adjacent installation position lines is out of tolerance, reinstalling and adjusting the position of the second cylindrical magnet according to the corrected second installation position line, rechecking the distance between the two corrected adjacent installation position lines and ensuring that the error is within an allowable range;
s4, correction of the next mounting position line: repeating steps S1-S3 on the adjacent second mounting position line and third mounting position line, and on the adjacent Nth mounting position line and the (N + 1) th mounting position line, thereby completing the correction of all the mounting position lines;
s5, installation of a transverse small pointed top structure: and (4) mounting the transverse small pointed top structures on each corrected mounting position line, so that accurate distance mounting of two adjacent transverse small pointed top structures is realized.
Note that the cylindrical magnet is placed so that the central axis of the cylindrical magnet is exactly aligned with the mounting position line.
As a further improvement of the invention, the bottom end of the cylindrical magnet is provided with a V-shaped groove, and the shape of the V-shaped groove is matched with the tip of the transverse small tip structure; through installing the in-process of horizontal little pinnacle structure, adsorb two cylinder type magnet the V type groove on the pinnacle of two adjacent horizontal little pinnacle structures, realize the quick installation of accurate distance of two adjacent horizontal little pinnacle structures.
In the invention, a groove body is formed in the cylindrical magnet, the central plane of the groove body is positioned on the central axis of the cylindrical magnet, and the laser pen is arranged in the groove body.
The invention has the beneficial effects that:
firstly, the transverse small pointed top structure of the cargo hold of the self-discharging ship and the manufacturing method thereof have the advantages that the transverse small pointed top structure is a pointed top formed by two inclined plates, the pointed top is provided with a pair of hanging beam liner plates, and the lower ends of the hanging beam liner plates are connected with a hopper door installation panel with a rectangular window, so that the integral structure is simple, and the construction operation and the hopper door installation operation are convenient.
Secondly, according to the transverse small pointed top structure of the self-unloading ship cargo hold and the manufacturing method thereof, correction allowance is reserved for the two inclined plates during blanking, the bottom of the self-unloading ship cargo hold is scanned by using the three-dimensional laser scanning measuring instrument to obtain the actual shape of the inclined wall at the bottom of the cargo hold, and then the shape of the side face of the inclined plate matched with the inclined wall at the bottom of the cargo hold is obtained, so that the corrected side face of the inclined plate has good fitting degree when being assembled with the inclined wall at the bottom of the cargo hold, the defect that the shape and the size of the inclined wall at the bottom of the cargo hold are not matched with the inclined plate due to deformation of the inclined wall at the bottom of the cargo hold caused by welding of a ship body is overcome, the installation precision of the transverse small pointed top structure is improved, and the welding quality of the transverse small pointed top structure is improved.
Thirdly, according to the transverse small pointed top structure of the cargo hold of the self-discharging ship and the manufacturing method thereof, the laser pen and the digital display laser ranging pen arranged on the cylindrical magnet are utilized, so that the accurate correction of the installation position line of the transverse small pointed top structure can be realized, and the installation accuracy of the transverse small pointed top structure is further improved.
Fourthly, according to the transverse small pointed top structure of the cargo hold of the self-discharging ship and the manufacturing method thereof, the improved cylindrical magnet is provided with the V-shaped groove matched with the shape of the pointed top, and the V-shaped groove of the cylindrical magnet can be directly positioned on the pointed top when the transverse small pointed top structure is installed, so that the transverse small pointed top structure is installed more quickly, and the accurate distance between the adjacent transverse small pointed top structures can be ensured.
Drawings
FIG. 1 is a schematic view of a transverse small tip structure of a cargo hold of a self-discharging ship of the present invention;
FIG. 2 is a view A-A of FIG. 1;
FIG. 3 is a schematic structural view of the hanging beam lining plate in FIG. 2, wherein side rib plates are arranged on two sides of the hanging beam lining plate, and the lower end of the hanging beam lining plate is connected with a hopper door mounting panel;
FIG. 4 is a top view of the portion of FIG. 1 related to the door mounting panel;
FIG. 5 is a schematic view of a cylindrical magnet;
fig. 6 is a left side view of fig. 5.
In the figure: 1. the device comprises a sharp top, 2, an inclined plate, 3, a hanging beam lining plate, 4, a bucket door mounting panel, 5, a rectangular window, 6, a round angle, 7, a waist-shaped hole, 8, a cargo compartment bottom inclined wall, 9, a cylindrical magnet, 10, a laser pen, 11, a digital display laser ranging pen, 12, a laser receiving plane, 13, a V-shaped groove, 14, a cargo compartment, 15, a side rib plate, 16, a hinge shaft, 17 and a tank body.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1:
as shown in fig. 1 to 6, an embodiment of a transverse small pinnacle structure of a self-discharging ship cargo hold of the present invention includes a pair of sloping plates 2 for forming a pinnacle 1, and a pair of hanging beam liner plates 3 connected to an inner side surface of the pinnacle 1 and vertically arranged downward, wherein a gate mounting panel 4 for mounting a cargo hold gate is connected to a lower end of the hanging beam liner plates 3, three rectangular windows 5 are arranged at intervals on the gate mounting panel 4, rounded corners 6 are arranged at four corners of the rectangular windows 5, and lower ends of the hanging beam liner plates 3 are respectively connected to positions between two adjacent rectangular windows 5 on the gate mounting panel 4; the two sides of the joint of the hanging beam lining plate 3 on the bucket door mounting panel 4 are respectively provided with a plurality of waist-shaped holes 7, the number of the waist-shaped holes is used for mounting the bucket door of the cargo hold, and the waist-shaped holes 7 are used for adjusting the position of the bucket door when the bucket door is mounted.
Preferably, the included angle between the pair of inclined plates 2 forming the top of the tip 1 is 60-90 degrees.
Preferably, the bucket door mounting panel 4 is spot-welded to the hanging beam liner 3 before the cargo compartment bucket door is mounted.
When the position of the bucket door mounting panel 4 is further adjusted during installation, spot welding can be removed, and the position of the bucket door mounting panel 4 can be adjusted and then spot welding and welding reinforcement can be carried out again.
Preferably, the transverse small pointed top structure of the cargo hold of the self-discharging ship is formed by adopting finite element analysis software to perform strength calculation and size optimization.
Preferably, a wear-resistant plate is paved on the outer side surface of the pointed top 1.
Preferably, side reinforcing plates 15 connected with the bucket door mounting panel 4 are arranged on two sides of the hanging beam lining plate 3.
Example 2:
a method of making a transverse small pinnacle structure for use in the cargo hold of the self-discharging ship of example 1 comprising the steps of:
(1) three-dimensional design of a transverse small pointed top structure: according to the structure and the size of the cargo hold of the self-unloading ship, three-dimensional design of a transverse small pinnacle structure of the cargo hold of the self-unloading ship is carried out by adopting three-dimensional CAD software to form a transverse small pinnacle three-dimensional CAD drawing;
(2) designing a steel plate blanking drawing: according to the transverse small pointed top three-dimensional CAD drawing, generating a steel plate blanking drawing of an inclined plate 2, a hanging beam lining plate 3, a hopper door mounting panel 4 and a side rib plate 15 in the transverse small pointed top structure; wherein, the hanging beam lining plate 3, the bucket door mounting panel 4 and the side reinforcing plate 15 form a blanking drawing according to the theoretical size, the side surface of the inclined plate 2 contacted with the inclined wall 8 at the bottom of the self-unloading ship cargo hold is reserved with correction allowance, and the other side surfaces form a blanking drawing according to the theoretical size;
(3) steel plate typesetting and purchasing: typesetting the blanking parts by using typesetting software according to the blanking drawing and the production quantity of the transverse small pinnacle structure to obtain a typesetting cutting drawing of steel plate blanking and the quantity of steel plates to be purchased, and purchasing the steel plates according to the quantity of the steel plates;
(4) cutting and blanking of a steel plate: cutting and blanking the steel plate into the inclined plate 2, the hanging beam lining plate 3, the bucket door mounting panel 4 and the side reinforcing plate 15 by adopting a numerical control plasma cutting machine according to the typesetting cutting diagram of the steel plate blanking;
(5) assembling and welding a transverse small pointed top structure: assembling and welding the inclined plate 2, the hanging beam lining plate 3 and the side reinforcing plate 15 together to form a transverse small pointed top component; the hopper door mounting panel 4 is not welded on the transverse small pointed top component temporarily;
(6) calibrating the installation position of the transverse small pinnacle structure: marking the installation position lines of the transverse small pointed top structures along the longitudinal direction of the ship body at the inclined wall 8 part at the bottom of the cargo hold of the self-discharging ship;
(7) three-dimensional scanning measurement of the inclined wall at the bottom of the cargo hold of the self-discharging ship: adsorbing a cylindrical magnet 9 on the inclined wall 8 at the bottom of the cargo hold of the self-unloading ship, aligning the central axis of the cylindrical magnet 9 with the installation position line, and then performing three-dimensional laser scanning measurement on the inclined wall 8 at the bottom of the cargo hold of the self-unloading ship needing to be provided with the transverse small pointed top structure and the cylindrical magnet 9 together by adopting a three-dimensional laser scanning measuring instrument to obtain three-dimensional profile data of the inclined wall 8 at the bottom of the cargo hold of the self-unloading ship needing to be provided with the transverse small pointed top structure;
(8) three-dimensional modeling of the inclined wall at the bottom of the cargo hold of the self-unloading ship: according to three-dimensional profile data of an inclined wall 8 part at the bottom of a self-unloading ship cargo hold of which a transverse small pointed top structure needs to be installed, measured by a three-dimensional laser scanning measuring instrument, three-dimensional modeling is performed through three-dimensional software to form a three-dimensional sheet body of the inclined wall 8 part at the bottom of the self-unloading ship cargo hold of which the transverse small pointed top structure needs to be installed, a cross section perpendicular to the three-dimensional sheet body is made in the three-dimensional software, the cross section passes through an intersection point of a central axis of a cylindrical magnet 9 and the three-dimensional sheet body, secondary three-dimensional design of an inclined plate 2 is performed by taking the cross section as a symmetrical plane, and an inclined plate 2 entity with thickness is formed, and a side surface, which is in contact with the three-dimensional sheet body, on the inclined plate 2 entity is used as a correction allowance-free surface of the inclined plate 2;
(9) correcting and processing the side surface of the inclined plate: fixing the transverse small pointed top assembly on a positioning tool by adopting a numerical control three-axis numerical control machine tool and the positioning tool, then correcting and processing the side surface of the inclined plate 2 in the transverse small pointed top assembly, wherein the correction allowance is reserved on the side surface, and the secondary three-dimensional designed inclined plate side surface in the step (8) is used as a processing feed path during correction and processing so as to realize the accurate fit of the side surface of the inclined plate 2 and the inclined wall 8 at the bottom of the cargo hold of the self-unloading ship when the transverse small pointed top structure is installed;
(10) installation of a transverse small pointed top structure: the hopper door mounting panel 4 is spot-welded to the lateral small pinnacle module and then mounted together to a predetermined mounting position at the bottom of the cargo hold of the self-discharging ship, and the welding is performed after aligning the mounting position line.
As a further improvement of this embodiment, the number of the cylindrical magnets 9 is two, a laser pen 10 and a digital display laser distance measuring pen 11 are respectively disposed on the cylindrical magnets 9, a laser projection direction of the digital display laser distance measuring pen 11 is perpendicular to a central axis of the cylindrical magnets 9, a laser projection direction of the laser pen 10 is perpendicular to a laser projection direction of the digital display laser distance measuring pen 11, and the laser pen 10 is rotatably disposed on a plane of the central axis of the cylindrical magnets 9 through a hinge shaft 16; the cylindrical magnet 9 is also provided with a laser receiving plane 12, and the laser receiving plane 12 is parallel to the laser projection direction of the digital display laser ranging pen 11; the two cylindrical magnets 9 are used for accurate distance installation of two adjacent transverse small pointed top structures at the bottom of the cargo hold of the self-discharging ship.
In this embodiment, the method for mounting two adjacent transverse small pointed structures at a precise distance by using two cylindrical magnets 9 is as follows:
s1, mounting of a first cylindrical magnet: installing a first cylindrical magnet 9 at a first installation position line according to the installation position lines of the transverse small pointed top structures marked in the step (6), and enabling a laser receiving plane 12 on the first cylindrical magnet 9 to face one side of a second installation position line adjacent to the first installation position line; rotating the laser pen 10 on the first cylindrical magnet 9 and observing whether the laser of the laser pen 10 is completely projected on the first installation position line or not in the rotating process, and adjusting if the laser deviates;
s2, mounting of a second cylindrical magnet: installing a second cylindrical magnet 9 at a second installation position line adjacent to the first installation position line, and enabling a digital display laser ranging pen 11 on the second cylindrical magnet 9 to point to a laser receiving plane 12 of the first cylindrical magnet 9; rotating the laser pen 10 on the second cylindrical magnet 9 and observing whether the laser of the laser pen 10 is completely projected on the second installation position line in the rotating process, and adjusting if the laser deviates;
s3, laser ranging and correcting of two adjacent mounting position lines: obtaining distance data of two adjacent installation position lines according to the distance from a digital display laser ranging pen 11 on a second cylindrical magnet 9 to a laser receiving plane 12 of the first cylindrical magnet 9 and the structural sizes of the first cylindrical magnet 9 and the second cylindrical magnet 9, correcting the second installation position line if the distance of the two adjacent installation position lines is out of tolerance, reinstalling and adjusting the position of the second cylindrical magnet 9 according to the corrected second installation position line, and rechecking the distance of the two corrected adjacent installation position lines and ensuring that the error is within an allowable range;
s4, correction of the next mounting position line: repeating steps S1-S3 on the adjacent second mounting position line and third mounting position line, and on the adjacent Nth mounting position line and the (N + 1) th mounting position line, thereby completing the correction of all the mounting position lines;
s5, installation of a transverse small pointed top structure: and (4) mounting the transverse small pointed top structures on each corrected mounting position line, so that accurate distance mounting of two adjacent transverse small pointed top structures is realized.
Note that the cylindrical magnet 9 is placed so that the central axis of the cylindrical magnet 9 is exactly aligned with the mounting position line.
As a further improvement of this embodiment, a V-shaped groove 13 is formed at the bottom end of the cylindrical magnet 9, and the shape of the V-shaped groove 13 is matched with the tip 1 of the transverse small tip structure; through installing the in-process of horizontal little pinnacle structure, adsorb two cylinder type magnet 9V type groove 13 on the pinnacle of two adjacent horizontal little pinnacle structures, realize the quick installation of accurate distance of two adjacent horizontal little pinnacle structures.
In this embodiment, a groove 17 has been opened on the cylindrical magnet 9, the central plane of the groove 17 is located on the central axis of the cylindrical magnet, and the laser pen 10 is disposed in the groove 17.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A method for manufacturing a transverse small pointed top structure of a cargo hold of a self-discharging ship is characterized by comprising the following steps:
(1) three-dimensional design of a transverse small pointed top structure: according to the structure and the size of the cargo hold of the self-unloading ship, three-dimensional design of a transverse small pinnacle structure of the cargo hold of the self-unloading ship is carried out by adopting three-dimensional CAD software to form a transverse small pinnacle three-dimensional CAD drawing;
(2) designing a steel plate blanking drawing: generating a steel plate blanking drawing of an inclined plate, a hanging beam lining plate, a hopper door mounting panel and a side rib plate in the transverse small pointed top structure according to the transverse small pointed top three-dimensional CAD drawing; the unloading device comprises a hanging beam lining plate, a hopper door mounting panel and a side reinforcing plate, wherein the hanging beam lining plate, the hopper door mounting panel and the side reinforcing plate form a blanking graph according to theoretical sizes, correction allowance is reserved on the side face, which is in contact with the inclined wall at the bottom of a cargo hold of the self-discharging ship, of an inclined plate, and the rest side faces form the blanking graph according to the theoretical sizes;
(3) steel plate typesetting and purchasing: typesetting the blanking parts by using typesetting software according to the blanking drawing and the production quantity of the transverse small pinnacle structure to obtain a typesetting cutting drawing of steel plate blanking and the quantity of steel plates to be purchased, and purchasing the steel plates according to the quantity of the steel plates;
(4) cutting and blanking of a steel plate: cutting and blanking the steel plate into the inclined plate, the hanging beam lining plate, the bucket door mounting panel and the side rib plate by adopting a numerical control plasma cutting machine according to the typesetting cutting diagram of the steel plate blanking;
(5) assembling and welding a transverse small pointed top structure: welding the inclined plate, the hanging beam lining plate and the side reinforcing plate together to form a transverse small pointed top component; the hopper door mounting panel is not welded on the transverse small pointed top component temporarily;
(6) calibrating the installation position of the transverse small pinnacle structure: marking the installation position lines of the transverse small pointed top structures along the longitudinal direction of the ship body at the inclined wall part at the bottom of the cargo hold of the self-discharging ship;
(7) three-dimensional scanning measurement of the inclined wall at the bottom of the cargo hold of the self-discharging ship: adsorbing a cylindrical magnet on the inclined wall at the bottom of the cargo hold of the self-unloading ship, aligning the central axis of the cylindrical magnet with the installation position line, and then performing three-dimensional laser scanning measurement on the inclined wall part at the bottom of the cargo hold of the self-unloading ship needing to be provided with the transverse small pointed top structure and the cylindrical magnet together by adopting a three-dimensional laser scanning measuring instrument to obtain three-dimensional profile data of the inclined wall part at the bottom of the cargo hold of the self-unloading ship needing to be provided with the transverse small pointed top structure;
(8) three-dimensional modeling of the inclined wall at the bottom of the cargo hold of the self-unloading ship: according to three-dimensional profile data of an inclined wall part at the bottom of a self-unloading ship cargo hold of which a transverse small pointed top structure needs to be installed, measured by a three-dimensional laser scanning measuring instrument, three-dimensional modeling is carried out through three-dimensional software to form a three-dimensional sheet body of the inclined wall part at the bottom of the self-unloading ship cargo hold of which the transverse small pointed top structure needs to be installed, a cross section perpendicular to the three-dimensional sheet body is made in the three-dimensional software, the cross section passes through an intersection point of a central axis of a cylindrical magnet and the three-dimensional sheet body, secondary three-dimensional design of an inclined plate is carried out by taking the cross section as a symmetrical plane, and an inclined plate entity with thickness is formed, and a side surface, which is in contact with the three-dimensional sheet body, on the inclined plate entity is used as a correction allowance-free surface of the inclined plate;
(9) correcting and processing the side surface of the inclined plate: fixing the transverse small pointed top assembly on a positioning tool by adopting a numerical control three-axis numerical control machine tool and the positioning tool, then correcting and processing the side surface of the inclined plate in the transverse small pointed top assembly, wherein the correction allowance is reserved on the side surface, and the secondary three-dimensional designed side surface of the inclined plate in the step (8) is used as a path of processing feed during correction processing so as to realize accurate fitting of the side surface of the inclined plate and the inclined wall at the bottom of the cargo hold of the self-unloading ship when the transverse small pointed top structure is installed;
(10) installation of a transverse small pointed top structure: and spot welding the bucket door mounting panel to the transverse small pointed top assembly, then mounting the bucket door mounting panel and the transverse small pointed top assembly together to a preset mounting position at the bottom of the cargo hold of the self-unloading ship, and welding after aligning a mounting position line.
2. The manufacturing method of the transverse small pointed top structure of the self-unloading ship cargo hold according to claim 1, characterized in that the number of the cylindrical magnets is two, a laser pen and a digital display laser ranging pen are respectively arranged on the cylindrical magnets, the laser projection direction of the digital display laser ranging pen is perpendicular to the central axis of the cylindrical magnets, the laser projection direction of the laser pen is perpendicular to the laser projection direction of the digital display laser ranging pen, and the laser pen is rotatably arranged on the plane of the central axis of the cylindrical magnets through a hinge shaft; the cylindrical magnet is also provided with a laser receiving plane, and the laser receiving plane is parallel to the laser projection direction of the digital display laser ranging pen; and the two cylindrical magnets are used for installing two adjacent transverse small pointed top structures at the bottom of the cargo hold of the self-discharging ship at accurate intervals.
3. The method for manufacturing the transverse small pointed top structure of the cargo hold of the self-discharging ship as claimed in claim 2, wherein the method for installing two adjacent transverse small pointed top structures at accurate intervals by adopting two cylindrical magnets comprises the following steps:
s1, mounting of a first cylindrical magnet: installing a first cylindrical magnet at the first installation position line according to the installation position lines of the transverse small pointed top structures marked in the step (6), and enabling a laser receiving plane on the first cylindrical magnet to face one side of a second installation position line adjacent to the first installation position line; rotating the laser pen on the first cylindrical magnet and observing whether the laser of the laser pen is completely projected on the first installation position line in the rotating process, and adjusting if the laser is deviated;
s2, mounting of a second cylindrical magnet: installing a second cylindrical magnet at a second installation position line adjacent to the first installation position line, and enabling a digital display laser ranging pen on the second cylindrical magnet to point to a laser receiving plane of the first cylindrical magnet; rotating the laser pen on the second cylindrical magnet and observing whether the laser of the laser pen is completely projected on the second installation position line in the rotating process, and adjusting if the laser is deviated;
s3, laser ranging and correcting of two adjacent mounting position lines: obtaining distance data of two adjacent installation position lines according to the distance from a digital display laser ranging pen on a second cylindrical magnet to a laser receiving plane of the first cylindrical magnet and the structural sizes of the first cylindrical magnet and the second cylindrical magnet, correcting the second installation position line if the distance between the two adjacent installation position lines is out of tolerance, reinstalling and adjusting the position of the second cylindrical magnet according to the corrected second installation position line, rechecking the distance between the two adjacent installation position lines and ensuring that the distance is within an allowable error range;
s4, correction of the next mounting position line: repeating steps S1-S3 on the adjacent second mounting position line and third mounting position line, and on the adjacent Nth mounting position line and the (N + 1) th mounting position line, thereby completing the correction of all the mounting position lines;
s5, installation of a transverse small pointed top structure: and (4) mounting the transverse small pointed top structures on each corrected mounting position line, so that accurate distance mounting of two adjacent transverse small pointed top structures is realized.
4. The manufacturing method of the transverse small pointed top structure of the self-unloading ship cargo hold according to claim 3, characterized in that a V-shaped groove is formed at the bottom end of the cylindrical magnet, and the shape of the V-shaped groove is matched with the pointed top of the transverse small pointed top structure; through installing the in-process of horizontal little pinnacle structure, adsorb two cylinder type magnet the V type groove on the pinnacle of two adjacent horizontal little pinnacle structures, realize the quick installation of accurate distance of two adjacent horizontal little pinnacle structures.
5. The manufacturing method of the transverse small pointed top structure of the cargo hold of the self-discharging ship according to claim 1, characterized in that the transverse small pointed top comprises a pair of inclined plates for forming a pointed top, and a pair of hanging beam lining plates which are connected to the inner side surface of the pointed top and are arranged vertically downwards, the lower ends of the hanging beam lining plates are connected with a gate mounting panel for mounting a cargo hold gate, three rectangular windows are arranged on the gate mounting panel at intervals, the four corners of each rectangular window are provided with round corners, and the lower ends of the hanging beam lining plates are respectively connected to the positions between two adjacent rectangular windows on the gate mounting panel; the two sides of the joint of the hanging beam lining plates on the bucket door mounting panel are respectively provided with a plurality of waist-shaped holes, the number of the waist-shaped holes is used for mounting the bucket door of the cargo hold, and the waist-shaped holes are used for adjusting the position of the bucket door when the bucket door is mounted.
6. The method for manufacturing a transverse small pointed top structure of a self-discharging ship cargo hold according to claim 5, wherein the door mounting panel is connected with the hanging beam liner plate in a spot welding mode before the cargo hold door is mounted.
7. The method for making a transverse small pointed top structure of a self-discharging ship cargo hold according to claim 5, wherein the transverse small pointed top structure of the self-discharging ship cargo hold is formed by strength calculation and size optimization by using finite element analysis software.
8. The method for manufacturing the transverse small pointed top structure of the cargo hold of the self-discharging ship according to the claim 5, characterized in that the outer side surface of the pointed top is paved with a layer of wear-resisting plates.
9. The method for manufacturing a transverse small pointed top structure of a self-discharging ship cargo hold according to claim 5, wherein the two sides of the hanging beam liner plate are provided with side rib plates connected with the hopper door mounting panel.
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