Ship model scribing device and method

Abstract

The invention discloses a ship model marking device which comprises a base, a wedge-shaped push rod module, a marking support and a marking sliding block. A frame type guide rail is mounted on the base, and the ship model is inversely placed in the frame type guide rail; the wedge-shaped push rod module is located at the bottom of the ship model and is divided into tail wedge-shaped push rods and head wedge-shaped push rods according to installation positions, and the tail wedge-shaped push rods are symmetrically arranged on the two sides of the tail of the ship model about the middle longitudinal section of the ship model and used for achieving transverse leveling of the ship model; the head wedge-shaped push rod is arranged on the front side of the ship model and used for achieving longitudinal leveling of the ship model. The marking support stretches across the ship model and can walk in the longitudinal direction. The lineation sliding block can walk along the cross beam guide rail, and the servo linear push rod motor controls the telescopic amount of the telescopic mechanism according to measurement data of the sliding block laser displacement sensor so that the lineation nozzle can lineate along the surface of the ship model. According to the ship model marking device, the marking work of ship model grid lines can be rapidly and precisely carried out, the whole marking process can be fully automatically completed, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship model hydrodynamic experiments, and particularly relates to a ship model auxiliary scribing device. Background Art

[0002] When performing hydrodynamic experiments on existing ship models, since it is necessary to accurately measure the wave-making form on the ship surface, grid lines are often drawn on the ship model surface as the measurement reference. However, the ship surface has a complex three-dimensional curved surface. Conventional scribing methods mainly use manual scribing, using rulers and compasses for scribing, which is difficult to ensure scribing accuracy. At the same time, the operation efficiency is low, the workload is large, and it is not conducive to fine operation. Currently, there is no device specifically for automatically scribing grid lines on ship models, and it is impossible to scribe grids on complex curved surfaces. Summary of the Invention

[0003] The main object of the present invention is to propose a ship model scribing device and method, which can automatically scribe lines according to set commands, can not only ensure high accuracy, but also greatly improve the scribing efficiency, providing a reliable experimental basis for relevant hydrodynamic model experiments.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A ship model scribing device includes a base, a wedge-shaped push rod module, a scribing bracket, and a scribing slider;

[0006] A frame-type guide rail is installed on the base, and the ship model is placed upside down in the frame-type guide rail;

[0007] The end of the wedge-shaped push rod module is a wedge-shaped block with an inclined upper surface, and the wedge-shaped block is located at the bottom of the ship model. Among them, the wedge-shaped push rod module is divided into a tail wedge-shaped push rod and a head wedge-shaped push rod according to the installation position. The tail wedge-shaped push rod is symmetrically arranged on both sides of the tail of the ship model with respect to the mid-longitudinal section of the ship model, and the transverse leveling of the ship model is achieved by adjusting the transverse position of its wedge-shaped block; the head wedge-shaped push rod is arranged on the front side of the ship model, and the longitudinal leveling of the ship model is achieved by adjusting the longitudinal position of its wedge-shaped block;

[0008] The scribing bracket spans above the ship model, including two side columns and a cross beam guide rail connecting the two side columns. The lower ends of the two side columns can walk longitudinally on the frame-type guide rail;

[0009] The scribing slider includes a traveling device, a servo linear push rod motor, a telescopic mechanism, and a scribing nozzle arranged in sequence from top to bottom. The traveling device can travel along the beam guide rail. The servo linear push rod motor is used to adjust the length of the telescopic mechanism so as to adjust the position of the scribing nozzle. The scribing nozzle is rotatably installed at the lower part of the telescopic mechanism, and slider laser displacement sensors are symmetrically installed on both sides of the scribing nozzle to measure the distance between itself and the surface of the ship model. The control system calculates the expected position of the scribing nozzle according to the geometric position and measurement data of the slider laser displacement sensors. The servo linear push rod motor controls the telescopic amount of the telescopic mechanism according to the calculation result so that the scribing nozzle scribes along the surface of the ship model; a commutation locking mechanism is provided at the connection between the scribing nozzle and the telescopic mechanism to adjust the direction of the slider laser displacement sensors to meet the scribing requirements of different hull lines.

[0010] In the above solution, the frame-type guide rail includes two transverse guide rails and two longitudinal guide rails. The two longitudinal guide rails are arranged in parallel between the two transverse guide rails and the spacing can be adjusted; track laser displacement sensors symmetrically arranged with respect to the midship section of the ship model are respectively installed at the front and rear parts of the two longitudinal guide rails, and each track laser displacement sensor measures the distance from the ship model to determine the center line position of the ship model.

[0011] In the above solution, the ship model scribing device further includes a centering adjustment push rod, and the centering adjustment push rod is symmetrically arranged on both sides of the tail and both sides of the head of the ship model with respect to the midship section of the ship model; the centering adjustment push rod pushes the ship model to the center line position according to the measurement data of the track laser displacement sensors to achieve centering of the ship model.

[0012] In the above solution, the scribing nozzle runs at a certain distance from the surface of the ship model, and the certain distance is 2 ± 0.5 mm.

[0013] In the above solution, the wedge-shaped push rod module includes a push rod base, a push rod, a worm servo reduction motor, and the wedge block. An opening for the push rod to pass through is provided on the push rod base. A rack is installed on the upper surface of the push rod. The output gear of the worm servo reduction motor meshes with the rack. The worm servo reduction motor controls the telescopic movement of the push rod according to the command. The worm servo reduction motor is equipped with an encoder for accurately feedbacking the telescopic distance of the push rod; the wedge block is fixed to the end of the push rod.

[0014] In the above solution, the ship model marking device further includes a head height displacement measurement module and a tail height displacement measurement module; the head height displacement measurement module is installed on the front side of the ship model and faces the ship center, and a head height laser displacement sensor is installed on the head height displacement measurement module; the tail height displacement measurement module is installed on the rear side of the ship model and faces the ship center, and two tail height laser displacement sensors arranged symmetrically about the longitudinal mid-plane of the ship model are installed on the tail height displacement measurement module; the head height laser displacement sensor and the tail height laser displacement sensors are installed at the same height;

[0015] Model head reference modules and model tail reference modules with the same height are respectively installed at the head and tail of the ship model. The model head reference module is located directly below the head height laser displacement sensor as its reflection plane, and the model tail reference module is located directly below the two tail height laser displacement sensors as their reflection planes;

[0016] The tail wedge push rod first realizes the lateral leveling of the ship model according to the measurement data of the two tail height laser displacement sensors; the head wedge push rod realizes the longitudinal leveling of the ship model according to the measurement data of the head height laser displacement sensor and the tail height laser displacement sensors.

[0017] In the above solution, a bracket laser displacement sensor is respectively installed on one side of the two columns of the marking bracket to measure the longitudinal distance of the marking bracket. A stop block is fixedly installed at one end of the frame-type guide rail as the reflection plane of the bracket laser displacement sensor; the marking bracket further includes two traveling mechanisms, and the two traveling mechanisms are respectively installed on the other side of the two columns to drive the columns to travel.

[0018] In the above solution, the traveling device of the marking slider includes a slider base and a traveling motor and an inner traveling gear installed on the slider base. The traveling motor is used to drive the inner traveling gear to rotate, and the inner traveling gear meshes and runs on the rack of the cross beam guide rail.

[0019] In the above solution, the commutation and locking mechanism of the marking slider is a pin. A pin hole is provided at the upper end of the marking nozzle, and the marking nozzle is fixed by the pin after rotating to the required angle.

[0020] Correspondingly, the present invention also proposes a ship model marking method, which adopts the above ship model marking device and includes the following steps:

[0021] Install the frame-type guide rail: Adjust the distance between the longitudinal guide rails of the frame-type guide rail to a suitable position according to the ship model size and then lock and fix it;

[0022] Install the ship model: Place the ship model upside down on the base so that it is located within the frame-type guide rail and the ship model is placed on the wedge blocks of the wedge push rod module;

[0023] Install the scribing bracket and the scribing slider: Install the scribing bracket on the longitudinal guide rail of the frame-type guide rail so that it spans above the ship model, and then install the whole scribing slider under the cross beam of the scribing bracket;

[0024] Adjust the position of the ship model: First, perform the centering adjustment of the ship model, then start the two tail wedge push rods to horizontally level the ship model, and finally start the head wedge push rod to longitudinally level the ship model;

[0025] Scribe the transverse section line: First, set the scribing area and set the distance of each transverse section line as required; According to the instruction, the scribing bracket first moves to the position of the first transverse section line, starts the scribing slider, and the scribing slider moves from the lowest point position at the left end to the lowest point position at the right end. During this process, the two slider laser displacement sensors on the scribing slider measure the distance data from the surface of the ship model and transmit the data to the control system. The control system further calculates the precise shape of the section here; Then the scribing slider moves from the lowest point position at the right end to the lowest point position at the left end. During this process, the control system adjusts the distance between the scribing nozzle and the hull surface in real time by controlling the telescopic amount of the telescopic mechanism according to the calculated section shape to ensure the scribing quality until the entire section line is drawn; After completing the scribing of this transverse section line, the scribing bracket walks to the next transverse section according to the instruction for scribing;

[0026] Scribe the waterline: First, set the scribing area and set the distance of each waterline as required. According to the instruction, the scribing bracket first moves to the initial position of the bow of the first waterline, starts the scribing slider, and the scribing slider moves from the lowest point position at the left end to the height of the first waterline. Rotate the scribing nozzle to make the two slider laser displacement sensors flush with the waterline. The scribing bracket moves from the bow to the stern according to the instruction. During this process, the two slider laser displacement sensors measure the distance data from the surface of the ship model and transmit the data to the control system. The control system further calculates the waterline section shape; Then the scribing bracket moves from the stern to the bow. During this process, the control system adjusts the distance between the scribing nozzle and the hull surface in real time by controlling the telescopic amount of the telescopic mechanism according to the calculated waterline section shape to ensure the scribing quality until the entire waterline is drawn; After completing the scribing of this waterline, the scribing slider rises to the second waterline according to the instruction and repeats the above operation to complete the drawing of all the remaining waterlines.

[0027] The beneficial effects produced by the present invention are:

[0028] 1. The ship model scribing device of the present invention can quickly and accurately scribe the grid lines of the ship model. The present invention can perform full-automatic centering, leveling and scribing. After centering and leveling are completed, the ship model can be fixed to avoid accidentally touching the leveling reference during manual operation, which increases the workload and cumulative error. The centering module, leveling module and scribing module are driven by servo motors, and with a variety of laser displacement sensors, corresponding measurement programs are designed to quickly and accurately complete the scribing work.

[0029] 2. It can perform grid scribing for complex ship surfaces, solving the problem of time-consuming, laborious and low-precision manual scribing. First, the distance from the slider laser displacement sensors symmetrically arranged on both sides of the scribing nozzle to the surface of the ship model is measured, and the data is transmitted to the control system. The control system further calculates the exact shape of the cross-section or waterline here, so as to control the distance between the scribing nozzle and the hull surface to ensure the scribing quality until the entire cross-section line or waterline is drawn.

[0030] 3. The entire scribing process can be completed fully automatically, greatly improving the operation efficiency. The scribing nozzle can move in three directions: horizontal, vertical and vertical under the drive of different motors, and the movement trajectory is determined according to the measurement data of different sensors. The whole process can be completed fully automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 is the overall structural schematic diagram of the ship model scribing device of the present invention;

[0033] Figure 2 is Figure 1 the structural schematic diagram of the base of the ship model scribing device shown;

[0034] Figure 3 is Figure 1 the structural schematic diagram of the ship model of the ship model scribing device shown;

[0035] Figure 4 is Figure 1 the structural schematic diagram of the wedge push rod module of the ship model scribing device shown;

[0036] Figure 5 is Figure 1 the structural schematic diagram of the head height displacement measurement module of the ship model scribing device shown;

[0037] Figure 6 isFigure 1 Schematic diagram of the structure of the tail height displacement measurement module of the shown ship model scribing device;

[0038] Figure 7 is Figure 1 Schematic diagram of the structure of the scribing bracket of the shown ship model scribing device;

[0039] Figure 8 is Figure 1 Schematic diagram of the structure of the scribing slider of the shown ship model scribing device;

[0040] Figure 9 is Figure 1 Top view of the shown ship model scribing device.

[0041] In the figure: 10, base; 11, cast iron platform; 12, frame type guide rail; 121, transverse guide rail; 122, longitudinal guide rail; 13, magnetic base; 14, track laser displacement sensor; 15, stop block;

[0042] 20, ship model; 21, model head reference module; 22, model tail reference module;

[0043] 30, wedge push rod module; 31, push rod base; 32, push rod; 33, worm servo reduction motor; 34, wedge block; 35, head wedge push rod; 36, tail wedge push rod;

[0044] 40, head height displacement measurement module; 41, head push rod base; 42, head push rod; 43, head worm servo reduction motor; 44, head height displacement gauge bracket; 45, head height laser displacement sensor;

[0045] 50, scribing bracket; 51, traveling mechanism; 52, column; 53, cross beam guide rail; 54, bracket laser displacement sensor;

[0046] 60, scribing slider; 61, slider base; 62, traveling motor; 63, inner traveling gear; 64, inner top push pulley; 65, servo linear push rod motor; 66, telescopic mechanism; 67, commutation locking mechanism; 68, scribing nozzle; 69, slider laser displacement sensor;

[0047] 70, centering adjustment push rod;

[0048] 80, tail height displacement measurement module; 81, tail push rod base; 82, tail push rod; 83, tail worm servo reduction motor; 84, tail height displacement gauge bracket; 85, tail height laser displacement sensor. Specific implementation method

[0049] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0050] It should be noted that the diagrams provided in the embodiments of the present invention only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0051] In the present invention, it should also be noted that when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present application. In addition, when terms such as "first" and "second" appear, they are only used for descriptive and distinguishing purposes and cannot be understood as indicating or implying relative importance.

[0052] Embodiment 1: Device Embodiment

[0053] As Figure 1 shown, a ship model scribing device includes a base 10, a wedge-shaped push rod module 30, a head height displacement measurement module 40, a tail height displacement measurement module 80, a scribing bracket 50, a scribing slider 60 and a centering adjustment push rod 70.

[0054] As Figure 2 shown, the base 10 includes a cast iron platform 11. A frame-type guide rail 12 is installed on the cast iron platform 11. The frame-type guide rail 12 includes two transverse guide rails 121 and two longitudinal guide rails 122. The two longitudinal guide rails 122 are arranged in parallel between the two transverse guide rails 121 and the spacing can be adjusted. After adjustment, it is fixed by an end profile connector and then fixed on the cast iron platform 11 through six magnetic bases 13 on both sides. The magnetic bases 13 are fixedly connected to the longitudinal guide rails 122. The ship model 20 is placed upside down in the frame-type guide rail 12.

[0055] At the front and rear of the two longitudinal guide rails 122, there are respectively installed track laser displacement sensors 14 symmetrically arranged with respect to the mid-longitudinal plane of the ship model 20. Each track laser displacement sensor 14 measures the distance from the ship model 20 to determine the center line position of the ship model. The centering adjustment push rods 70 are symmetrically arranged on both sides of the tail and the head of the ship model 20 with respect to the mid-longitudinal plane of the ship model 20; the centering adjustment push rods 70 push the ship model 20 to the center line position according to the measurement data of the track laser displacement sensors 14 to achieve the centering of the ship model 20.

[0056] As Figure 3 shown, a model head reference module 21 and a model tail reference module 22 are respectively installed at the head and the tail of the ship model 20, and the two reference modules are used for the reflection planes of the laser displacement sensors. The two reference modules are T-shaped thin plates. After the ship model 20 is placed upside down on the cast iron platform 11, the two reference modules are respectively installed at the head and the tail of the model. It is required that the longitudinal direction of the T-shaped thin plate coincides with the longitudinal center line of the ship model 20, and the height from the ship model 20 deck is equal. The two reference modules can be fixed on the hull surface with glue.

[0057] As Figure 4 shown, the wedge-shaped push rod module 30 includes a push rod base 31, a push rod 32, a worm servo reduction motor 33 and a wedge block 34. An opening for the push rod 32 to pass through is provided on the push rod base 31. A rack is installed on the upper surface of the push rod 32. The output gear of the worm servo reduction motor 33 meshes with the rack. The worm servo reduction motor 33 controls the telescopic movement of the push rod 32 according to the instruction. The worm servo reduction motor 33 is equipped with an encoder for accurately feedback the telescopic distance of the push rod 32; the wedge block 34 is fixed to the end of the push rod 32. The ship model 20 is placed on the wedge-shaped push rod module 30. Among them, the wedge-shaped push rod module 30 is divided into a tail wedge-shaped push rod 36 and a head wedge-shaped push rod 35 according to the installation position. See Figure 1 , the tail wedge-shaped push rod 36 is symmetrically arranged on both sides of the tail of the ship model 20 with respect to the mid-longitudinal plane of the ship model 20, and the transverse leveling of the ship model 20 is realized by adjusting the transverse position of its wedge block 34; the head wedge-shaped push rod 35 is arranged on the front side of the ship model 20, and the longitudinal leveling of the ship model 20 is realized by adjusting the longitudinal position of its wedge block 34.

[0058] As Figure 5As shown in the figure, the head height displacement measurement module 40 is installed on the front side of the ship model 20 and is facing the ship center. It includes a head push rod base 41, a head push rod 42, a head worm servo reduction motor 43, a head height displacement gauge bracket 44, and a head height laser displacement sensor 45. An opening for the head push rod 42 to pass through is provided on the head push rod base 41. A rack is installed on the upper surface of the head push rod 42. The output gear of the head worm servo reduction motor 43 meshes with the rack. The head worm servo reduction motor 43 controls the telescoping of the head push rod 42 according to the command. The head worm servo reduction motor 43 is equipped with an encoder to accurately feedback the telescoping distance of the head push rod 42. The head height displacement gauge bracket 44 is fixed at the end of the head push rod 42, and a head height laser displacement sensor 45 is installed on the head height displacement gauge bracket 44. The model head reference module 21 is located directly below the head height laser displacement sensor 45 as its reflection plane.

[0059] As Figure 6 shown in the figure, the tail height displacement measurement module 80 is installed on the rear side of the ship model 20 and is facing the ship center. The structure of the tail height displacement measurement module 80 is the same as that of the head height displacement measurement module 40, including a tail push rod base 81, a tail push rod 82, a tail worm servo reduction motor 83, a tail height displacement gauge bracket 84, and a tail height laser displacement sensor 85. The difference is that two tail height laser displacement sensors 85 arranged symmetrically about the longitudinal mid-plane of the ship model are installed on the tail height displacement gauge bracket 84. And the head height laser displacement sensor 45 and the tail height laser displacement sensor 85 are at the same height. The model tail reference module 22 is located directly below the two tail height laser displacement sensors 85 as their reflection planes.

[0060] The head height displacement measurement module 40 and the tail height displacement measurement module 80 are used to assist in leveling the ship model 20. The specific method is as follows: After the ship model is centered, then adjust the levelness of the ship model. According to the height data at both ends of the upper surface of the model tail reference module 22 (corresponding to being measured by the two tail height laser displacement sensors 85), taking the larger data as the reference, adjust the tail wedge push rod 36 on the other side to make the two tail height data equal, so that the ship model realizes lateral leveling; then adjust the head wedge push rod 35 to make the head height data (measured by the head height laser displacement sensor 45) equal to the tail height data, so that the ship model also realizes longitudinal leveling, and the entire ship model completes the leveling work.

[0061] As Figure 7As shown in the figure, the scribing support 50 spans above the ship model 20 and includes two side columns 52 and a crossbeam guide rail 53 connecting the two side columns 52. Components of different sizes can be selected according to the size of the ship model 20. The lower ends of the two side columns 52 are equipped with traveling mechanisms 51, which can drive the scribing support 50 to run precisely along the longitudinal direction on the frame-type guide rail 12. The crossbeam guide rail 53 is a T-shaped track with a rack. On one side of each of the two columns 52 of the scribing support 50, a support laser displacement sensor 54 is installed to measure the longitudinal distance of the scribing support 50, thereby determining the longitudinal position of the scribing support 50. At one end of the frame-type guide rail 12, a stop block 15 is fixedly installed as the reflection plane of the support laser displacement sensor 54.

[0062] As Figure 8 shown in the figure, the scribing slider 60 includes a traveling device, a servo linear push rod motor 65, a telescopic mechanism 66, and a scribing nozzle 68 arranged in sequence from top to bottom. The traveling device can travel along the crossbeam guide rail 53. The servo linear push rod motor 65 is used to adjust the length of the telescopic mechanism 66 to adjust the position of the scribing nozzle 68. The scribing nozzle 68 is rotatably installed at the lower part of the telescopic mechanism 66, and on both sides of the scribing nozzle 68, slider laser displacement sensors 69 are symmetrically installed to measure the distance from the surface of the ship model 20. The servo linear push rod motor 65 controls the telescopic amount of the telescopic mechanism 66 according to the measurement data of the slider laser displacement sensors 69, so that the scribing nozzle 68 scribes along the surface of the ship model 20; at the connection between the scribing nozzle 68 and the telescopic mechanism 66, a commutation locking mechanism 67 is provided to adjust the direction of the slider laser displacement sensors 69 to meet the drawing requirements of different hull lines.

[0063] Further optimized, the scribing nozzle 68 runs at a certain distance from the surface of the ship model 20, and the certain distance is 2 ± 0.5 mm.

[0064] Further optimized, the traveling device of the scribing slider 60 includes a slider base 61, a traveling motor 62, an inner traveling gear 63, and an inner pushing pulley 64 installed on the slider base 61. The traveling motor 62 drives the inner traveling gear 63 to rotate. The inner traveling gear 63 can mesh and run on the rack of the crossbeam guide rail 53. Two inner pushing pulleys 64 are arranged front and back and can slide along the inner wall of the crossbeam guide rail 53. At the same time, an internal elastic component is provided to further apply an axial force to ensure the stability of the scribing slider 60 during operation.

[0065] Further optimized, the commutation locking mechanism 67 of the scribing slider 60 is a pin. A pin hole is provided at the upper end of the scribing nozzle. After the scribing nozzle rotates to the required angle, it is fixed by the pin.

[0066] Embodiment 2: Method Embodiment

[0067] A method for scribing a ship model 20, using the above-mentioned ship model 20 scribing device, includes the following steps:

[0068] Install the bow and stern reference modules of the ship model 20: Install the model bow reference module 21 and the model stern reference module 22 as required, align them longitudinally with the longitudinal center line of the ship model 20, and keep them flush with the deck surface of the ship model 20 transversely.

[0069] Install the frame-type guide rail 12: Adjust the distance between the longitudinal guide rails 122 of the frame-type guide rail 12 to a suitable position according to the size of the ship model 20, then lock the longitudinal guide rails 122 with connecting pieces, and finally turn the knob of the magnetic base 13 to the suction gear to fix the longitudinal guide rails 122.

[0070] Install the ship model 20: Place the ship model 20 upside down on the cast iron platform 11 of the base 10 so that it is located inside the frame-type guide rail 12 and the ship model 20 is placed on the wedge block 34 of the wedge push rod module 30.

[0071] Install the scribing bracket 50 and the scribing slider 60: Install the scribing bracket 50 on the longitudinal guide rails 122 of the frame-type guide rail 12 so that it spans above the ship model 20, and then install the scribing slider 60 as a whole under the cross beam of the scribing bracket 50.

[0072] After all the components of the scribing device of the ship model 20 are installed, connect each sensor and the drive motor to the control system through signal lines respectively.

[0073] Adjust the position of the ship model 20: Start the centering and leveling program. First, start the centering adjustment push rods 70 on both sides. According to the data of the track laser displacement sensor 14, push the ship model 20 to the center line position; according to the data of the two tail height laser displacement sensors 85, start the tail wedge push rod 36 to level the ship model 20 transversely first, and then start the head wedge push rod 35 according to the data of the head height laser displacement sensor 45 to level the ship longitudinally; after the leveling and centering of the ship model 20 are completed, the centering adjustment push rods 70 on both sides will clamp and fix the ship model 20 inward.

[0074] Cross-sectional line marking: First, set the marking area and set the distance of each cross-sectional line as required. According to the instruction, the marking support 50 first moves to the position of the first cross-sectional line. Then, start the marking slider 60. The marking slider 60 moves from the lowest point at the left end to the lowest point at the right end. During this process, the two slider laser displacement sensors 69 on the marking slider 60 measure the distance data from the surface of the ship model 20 and transmit the data to the control system. The control system further calculates the precise shape of the cross-section at this location. Then, the marking slider 60 moves from the lowest point at the right end to the lowest point at the left end. During this process, according to the calculated cross-section shape, the control system adjusts the distance between the marking nozzle 68 and the hull surface in real time by controlling the telescopic amount of the telescopic mechanism 66 to ensure the marking quality until the entire cross-sectional line is drawn. After completing the cross-sectional line at this location, the marking support 50 walks to the next cross-section according to the instruction for marking. The entire marking process is carried out in two steps. For the first time, the marking slider 60 runs from left to right, and the two slider laser displacement sensors 69 measure two sets of data respectively. The latter set of data can verify the former set of data, and the precise shape of the current cross-section is calculated through the internal program. When the marking slider 60 runs from right to left for the second time, compared with the situation of only one sensor, according to the geometric positions of the current two sensors and the measured historical data, the internal program can calculate the position of the current slider and the expected position of the marking nozzle more quickly, which is easy for software programming and implementation.

[0075] Waterline marking: First, set the marking area and set the distance of each waterline as required. According to the instruction, the marking support 50 first moves to the initial position of the bow of the first waterline. Then, start the marking slider 60. The marking slider 60 moves from the lowest point at the left end to the height of the first waterline and rotates the marking nozzle 68 to make the two slider laser displacement sensors 69 flush with the waterline. The marking support 50 moves from the bow to the stern according to the instruction. During this process, the two slider laser displacement sensors 69 measure the distance data from the surface of the ship model 20 and transmit the data to the control system. The control system further calculates the waterline cross-section shape. Then, the marking support 50 moves from the stern to the bow. During this process, according to the calculated waterline cross-section shape, the control system adjusts the distance between the marking nozzle 68 and the hull surface in real time by controlling the telescopic amount of the telescopic mechanism 66 to ensure the marking quality until the entire waterline is drawn. After completing the marking of the waterline at this location, the marking slider 60 rises to the second waterline according to the instruction and repeats the above operation to complete the drawing of all the remaining waterlines. If it is required to draw waterlines on both sides of the ship model 20, the program can be adjusted to draw the waterlines on the other side. Finally, all the required cross-sectional lines and horizontal lines are drawn.

[0076] It should be noted that according to the needs of implementation, each step / component described in this application can be split into more steps / components, or two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0077] In the above embodiments, the magnitudes of the sequence numbers of the steps do not imply the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0078] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A ship model scribing device, characterized in that, It includes a base, a wedge push rod module, a scribing bracket and a scribing slider; A frame-type guide rail is installed on the base, and the ship model is placed upside down in the frame-type guide rail; The end of the wedge push rod module is a wedge block with an inclined upper surface, and the wedge block is located at the bottom of the ship model. Among them, the wedge push rod module is divided into a tail wedge push rod and a head wedge push rod according to the installation position. The tail wedge push rod is symmetrically arranged on both sides of the tail of the ship model with respect to the mid-longitudinal section of the ship model, and the transverse leveling of the ship model is realized by adjusting the transverse position of its wedge block; the head wedge push rod is arranged on the front side of the ship model, and the longitudinal leveling of the ship model is realized by adjusting the longitudinal position of its wedge block; The scribing bracket straddles above the ship model and includes two side columns and a cross beam guide rail connecting the two side columns. The lower ends of the two side columns can walk longitudinally on the frame-type guide rail; The scribing slider includes a walking device, a servo linear push rod motor, a telescopic mechanism and a scribing nozzle arranged in sequence from top to bottom. The walking device can walk along the cross beam guide rail. The servo linear push rod motor is used to adjust the length of the telescopic mechanism so as to adjust the position of the scribing nozzle. The scribing nozzle is rotatably installed at the lower part of the telescopic mechanism, and slider laser displacement sensors are symmetrically installed on both sides of the scribing nozzle to measure the distance between itself and the surface of the ship model. The control system calculates the expected position of the scribing nozzle according to the geometric position and measurement data of the slider laser displacement sensor. The servo linear push rod motor controls the telescopic amount of the telescopic mechanism according to the calculation result so that the scribing nozzle scribes along the surface of the ship model; a commutation locking mechanism is provided at the connection between the scribing nozzle and the telescopic mechanism to adjust the direction of the slider laser displacement sensor to meet the drawing requirements of different hull lines.

2. The ship model scribing device according to claim 1, characterized in that, The frame-type guide rail includes two transverse guide rails and two longitudinal guide rails. The two longitudinal guide rails are arranged in parallel between the two transverse guide rails and the distance between them can be adjusted; track laser displacement sensors symmetrically arranged with respect to the mid-longitudinal section of the ship model are respectively installed at the front and rear parts of the two longitudinal guide rails, and each track laser displacement sensor measures the distance from the ship model to determine the center line position of the ship model.

3. The ship model scribing device according to claim 2, characterized in that, The ship model scribing device also includes a centering adjustment push rod, which is symmetrically arranged on both sides of the tail and both sides of the head of the ship model with respect to the mid-longitudinal section of the ship model; the centering adjustment push rod pushes the ship model to the center line position according to the measurement data of the track laser displacement sensor to realize the centering of the ship model.

4. The ship model scribing device according to claim 1, wherein The scribing nozzle runs at a certain distance from the surface of the ship model, and the certain distance is 2±0.5mm.

5. The ship model scribing device according to claim 1, characterized in that, The wedge push rod module includes a push rod base, a push rod, a worm servo reduction motor and the wedge block. An opening for the push rod to pass through is provided on the push rod base. A rack is installed on the upper surface of the push rod. The output gear of the worm servo reduction motor meshes with the rack. The worm servo reduction motor controls the telescopic movement of the push rod according to the instruction. The worm servo reduction motor is equipped with an encoder for accurately feedbacking the telescopic distance of the push rod; the wedge block is fixed at the end of the push rod.

6. The ship model scribing device according to claim 1, characterized in that, The ship model scribing device further includes a bow height displacement measurement module and a stern height displacement measurement module; the bow height displacement measurement module is installed on the front side of the ship model and faces the midship, and a bow height laser displacement sensor is installed on the bow height displacement measurement module; the stern height displacement measurement module is installed on the rear side of the ship model and faces the midship, and two stern height laser displacement sensors arranged symmetrically about the longitudinal midsection plane of the ship model are installed on the stern height displacement measurement module; the bow height laser displacement sensor and the stern height laser displacement sensor are installed at the same height; Model bow reference modules and model stern reference modules with the same height are respectively installed at the bow and stern of the ship model. The model bow reference module is located directly below the bow height laser displacement sensor as its reflection plane, and the model stern reference module is located directly below the two stern height laser displacement sensors as their reflection planes; The stern wedge push rod first levels the ship model laterally according to the measurement data of the two stern height laser displacement sensors; the bow wedge push rod levels the ship model longitudinally according to the measurement data of the bow height laser displacement sensor and the stern height laser displacement sensors.

7. The ship model scribing device according to claim 1, characterized in that, One bracket laser displacement sensor is respectively installed on one side of the two columns of the scribing bracket to measure the longitudinal distance of the scribing bracket. A stop block is fixedly installed at one end of the frame-type guide rail as the reflection plane of the bracket laser displacement sensor; the scribing bracket further includes two traveling mechanisms, and the two traveling mechanisms are respectively installed on the other side of the two columns to drive the columns to travel.

8. The ship model scribing device according to claim 1, characterized in that, The traveling device of the scribing slider includes a slider base, a traveling motor and an inner traveling gear installed on the slider base. The traveling motor is used to drive the inner traveling gear to rotate, and the inner traveling gear meshes and runs on the rack of the crossbeam guide rail.

9. The ship model scribing device according to claim 1, characterized in that, The commutation and locking mechanism of the scribing slider is a bolt. A bolt hole is provided at the upper end of the scribing nozzle, and the scribing nozzle is fixed by a bolt after rotating to the required angle.

10. A method for marking a ship model, characterized in that, Using the ship model scribing device according to any one of claims 1-9, includes the following steps: Install the frame-type guide rail: Adjust the distance between the longitudinal guide rails of the frame-type guide rail to a suitable position according to the size of the ship model and then lock and fix it; Install the ship model: Place the ship model upside down on the base so that it is located within the frame-type guide rail and the ship model is placed on the wedge blocks of the wedge push rod module; Install the scribing bracket and the scribing slider: Install the scribing bracket on the longitudinal guide rails of the frame-type guide rail so that it straddles above the ship model, and then install the scribing slider as a whole below the crossbeam of the scribing bracket; Adjust the position of the ship model: First perform the centering adjustment of the ship model, then start the two stern wedge push rods to level the ship model laterally, and finally start the bow wedge push rod to level the ship model longitudinally; Cross-sectional line marking: First, set the marking area and set the distance of each cross-sectional line as required. The marking bracket moves to the position of the first cross-sectional line according to the instruction, and the marking slider is started. The marking slider moves from the lowest point at the left end to the lowest point at the right end. During this process, the two slider laser displacement sensors on the marking slider measure the distance data from the surface of the ship model and transmit the data to the control system. The control system further calculates the precise shape of the cross-section at this point. Then the marking slider moves from the lowest point at the right end to the lowest point at the left end. During this process, the control system adjusts the distance between the marking nozzle and the hull surface in real time by controlling the telescopic amount of the telescopic mechanism according to the calculated cross-sectional shape to ensure the marking quality until the entire cross-sectional line is drawn. After completing the cross-sectional line here, the marking bracket walks to the next cross-section according to the instruction for marking. Waterline marking: First, set the marking area and set the distance of each waterline as required. The marking bracket moves to the initial position at the bow of the first waterline according to the instruction, and the marking slider is started. The marking slider moves from the lowest point at the left end to the height of the first waterline, and the marking nozzle is rotated so that the two slider laser displacement sensors are flush with the waterline. The marking bracket moves from the bow to the stern according to the instruction. During this process, the two slider laser displacement sensors measure the distance data from the surface of the ship model and transmit the data to the control system. The control system further calculates the waterline cross-sectional shape. Then the marking bracket moves from the stern to the bow. During this process, the control system adjusts the distance between the marking nozzle and the hull surface in real time by controlling the telescopic amount of the telescopic mechanism according to the calculated waterline cross-sectional shape to ensure the marking quality until the entire waterline is drawn. After completing the marking of the waterline here, the marking slider rises to the second waterline according to the instruction and repeats the above operation to complete the marking of all the remaining waterlines.

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