Positioning fixture for shipbuilding

Abstract

The utility model discloses a positioning fixture for ship production relates to positioning fixture technical field, including support, and the positioning fixture device is installed on the support, positioning fixture device includes the supporting component and clamping component, the supporting component symmetry sets up in the left and right sides of support, and it includes the adjusting plate and support plate of mutual hinging, the one end of adjusting plate is away from support plate is hinged on the support, still be provided with adjusting drive arrangement between adjusting plate and support, and adjusting drive arrangement is used for adjusting the open-close angle of adjusting plate, still be provided with support drive arrangement between support plate and support, and support drive arrangement is used for adjusting the open-close angle of support plate, clamping component includes bottom support spare and stabilizing component, and bottom support spare sets up in the top of support plate is used for from the above pressure tight ship board, and stabilizing component evenly sets up on adjusting plate and support plate is used for from below provides the support.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, and in particular to a positioning fixture for shipbuilding. Background Technology

[0002] In shipbuilding, the hull is welded from a large number of steel plates of different shapes and curvatures. To ensure the hull's lines and structural strength, the steel plates need to be precisely positioned and fixed at predetermined locations and angles before welding. Traditional clamps are mostly rigid and difficult to adapt to hull plates with different curvatures and angles. Furthermore, during welding, due to thermal stress, the steel plates are prone to deformation and curling, leading to a decrease in welding accuracy and affecting the quality of hull construction. Utility Model Content

[0003] The purpose of this invention is to provide a positioning fixture for shipbuilding, to solve the problems of inflexible clamping of ship plates and susceptibility to deformation due to welding stress in existing technologies.

[0004] To achieve the above objectives, this utility model provides a positioning fixture for shipbuilding, including a bracket with a positioning clamping device mounted on it. The positioning clamping device includes a support component and a clamping component. The support component is symmetrically arranged on the left and right sides of the bracket and includes an adjusting plate and a support plate hinged to each other. The end of the adjusting plate away from the support plate is hinged to the bracket. An adjusting drive device is also installed between the adjusting plate and the bracket to adjust the opening angle of the adjusting plate. A support drive device is also installed between the support plate and the bracket to adjust the opening angle of the support plate. The clamping component includes a bottom support and a stabilizing component. The bottom support is positioned above the support plate to press the ship plate from above. The stabilizing component is evenly arranged on the adjusting plate and the support plate to provide support from below.

[0005] With the above structure, the symmetrically arranged support components, combined with the hinged structure of the adjusting plate and the support plate, can flexibly adapt to ship plates with different curvatures and angles, improving the adaptability and accuracy of clamping. The adjusting drive device and the support drive device independently control the opening and closing angles of the adjusting plate and the support plate, facilitating multi-angle adjustments according to the shape of the ship plate and improving positioning efficiency. The bottom support and stabilizing components in the clamping assembly work together to clamp the ship plate from the top and bottom, effectively preventing deformation and displacement during the welding process and ensuring welding quality.

[0006] Preferably, the adjustment drive device includes a lifting rod mounted on the bottom center of the two adjustment plates and slidably mounted on a bracket, and a lifting drive device mounted between the lifting rod and the bracket; the lifting rod and the adjustment plates are hinged by a tie rod; the opening angle of the two adjustment plates is adjusted by the up-and-down movement of the lifting rod. The lifting drive device controls the up-and-down movement of the lifting rod, achieving synchronous adjustment of the opening angle of the two adjustment plates, resulting in a simple structure and convenient operation. The lifting rod is slidably mounted on the bracket, and in conjunction with the guide rail and slider, improves the stability and accuracy of the lifting process.

[0007] Preferably, the support drive device includes a support base mounted on the bottom of the support plate and located on a bracket, a slider slidably mounted on the support base, and a sliding drive device for driving the slider to slide left and right; the slider and the support plate are hinged together by a support arm; a lifting device is also hinged between the bottom of the support arm and the slider. This structure allows for more flexible and diverse angle adjustment of the support plate, enabling it to better cooperate with the adjustment plate to form a support surface that matches the ship plate, thus meeting the positioning requirements of ship plates of different shapes.

[0008] Preferably, the lifting device includes a first electric push rod, the mounting end of which is hinged to the slider; the telescopic end is hinged to the bottom of the support arm; the operation of the first electric push rod drives the support arm to rotate around the slider. This electric push rod drive method allows for precise control of the support arm's rotation angle, thereby precisely adjusting the angle of the support plate and improving the accuracy of the positioning fixture. The sliding structure between the support base and the slider, combined with the hinge between the support arm and the slider, allows for flexible adjustment of the support plate's tilt angle to adapt to different shapes of ship plates. The lifting device further assists in the rotation of the support arm, enhancing the accuracy and stability of the support plate angle adjustment.

[0009] Preferably, the sliding drive device includes a rack fixed to the bottom of the support base and extending to the left and right, a gear rotatably mounted on the slider and meshing with the rack, and a rotation drive mounted on the slider and driving the gear to rotate.

[0010] Preferably, a support wheel is rotatably mounted on the slider on the opposite side of the gear, and the support wheel is supported on the support seat.

[0011] Preferably, the bottom support includes a pressure plate rotatably mounted on the free end of the support plate and a latching mechanism for locking the pressure plate.

[0012] Preferably, the stabilizing component includes a positioning plate fixed to a support plate or an adjusting plate, a connecting seat fixed on the positioning plate, a connecting shaft slidably connected to the connecting seat, a top block fixed above the connecting shaft, and a protrusion fixed at the lower end of the connecting shaft passing through the connecting seat; a spring is fitted on the connecting shaft, and the spring is clamped between the top block and the connecting seat; a through hole is provided at the center of the positioning plate and the connecting seat, and an ejector rod is slidably installed up and down in the through hole; a magnetic suction component is fixed above the ejector rod, and a second electric push rod is fixed below it through the through hole.

[0013] Preferably, a rubber pad is provided on the top block.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are: This invention relates to a positioning fixture for shipbuilding, which solves the problem that traditional fixtures in the prior art are difficult to adapt to ship plates with different curvatures and angles. By setting up a bracket and a positioning clamping device mounted on the bracket, this invention can flexibly adjust the opening and closing angles of the adjusting plate and the support plate, thereby adapting to the assembly requirements of ship plates with different V-shaped, U-shaped, or complex curvatures. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a positioning clamp for shipbuilding according to this utility model; Figure 2 yes Figure 1 Side view; Figure 3 yes Figure 1 A magnified view of part A in the image; Figure 4 yes Figure 1 A schematic diagram of the structure of the central support drive device; Figure 5 yes Figure 1 Schematic diagram of the structure of the medium-stabilized component; Figure 6 yes Figure 1 A schematic diagram of the structure of the bottom support component;

[0016] In the diagram, 1. Bracket, 11. Base frame, 12. Side frame, 13. Cross brace, 131. Hinge seat, 132. Fixed seat, 2. Support assembly, 21. Adjusting plate, 22. Support plate, 221. Mounting seat, 23. Adjustment drive device, 231. Lifting rod, 232. Lifting drive device, 24. Tie rod, 25. Support drive device, 251. Support seat, 252. Slider, 253. Sliding drive device, 254. Rack, 255. Gear 256. Wheel, 257. Support wheel, 258. Lifting device, 26. Support arm, 3. Clamping assembly, 31. Bottom support, 311. Pressure plate, 312. Slot, 313. Top rod, 314. Knob, 32. Stabilizing assembly, 321. Positioning plate, 322. Connecting seat, 323. Connecting shaft, 324. Top block, 325. Protrusion, 326. Spring, 327. Ejection rod, 328. Magnetic suction component, 329. Second electric push rod, 4. Boat plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] The orientations mentioned in this specification are based on the orientation of the positioning fixture used in ship production of this utility model when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0019] like Figures 1-6 As shown, a positioning fixture for shipbuilding includes a bracket 1, which is a triangular frame. It includes a base frame 11 and side frames 12 mounted on the front and rear sides of the base frame 11. The side frames 12 are isosceles triangular structures. The bracket 1 is welded from Q355 steel plate, suitable for the weight requirements of common ship plates in shipbuilding. The two side frames 12 are fixedly connected at the vertices of the isosceles triangle by cross braces 13. A positioning clamping device is mounted on the bracket 1; the positioning clamping device includes a support component 2 and a clamping component 3.

[0020] The supporting components 2 are symmetrically arranged on the left and right sides of the bracket 1, and include an adjusting plate 21 and a support plate 22 that are hinged to each other, thereby forming a flexible supporting plane. The end of the adjusting plate 21 away from the support plate 22 is hinged to the bracket 1; the two adjusting plates 21 and the top of the bracket 1 form a ridge structure.

[0021] The hinge method of the adjusting plate 21 is as follows: A hinge seat 131 is fixed on the cross brace 13. A fixing hole is provided in the middle of the hinge seat 131, through which the cross brace 13 passes and is fixed to the hinge seat 131. A rotating shaft is provided on the left and right sides of the hinge seat 131, and an adjusting plate 21 is rotatably mounted on each rotating shaft. Multiple hinge seats 131 are evenly arranged along the length of the cross brace 13. In this embodiment, two hinge seats 131 are provided.

[0022] An adjustment drive device 23 is also installed between the adjustment plate 21 and the bracket 1. The adjustment drive device 23 is used to adjust the opening and closing angle of the adjustment plate 21. The adjustment drive device 23 includes a lifting rod 231 installed at the bottom center of the two adjustment plates 21 and slidably mounted on the bracket 1, and a lifting drive device 232 installed between the lifting rod 231 and the bracket 1. In this embodiment, the lifting rod 231 is slidably mounted at the bottom of the cross brace 13. The specific installation method is as follows: A fixed base 132 is fixed to the middle of the cross brace 13, and a lifting drive device 232 is fixedly installed on the fixed base 132. In this embodiment, the lifting drive device 232 is an electric cylinder, but in actual applications it can also be an electric push rod. The fixed end of the lifting drive device 232 is fixed to the fixed base 132, and its output end extends downward and is fixed to the lifting rod 231. The lifting rod 231 is lifted and lowered by the extension and retraction of the output end of the lifting drive device 232. In order to ensure the stability of the lifting rod 231 in the up and down movement, a vertical guide rail is also provided on the side of the fixed base 132, and a slider 252 is installed on the guide rail. The slider 252 is fixed to the lifting rod 231. The lifting rod 231 is hinged to the bottom of the adjusting plate 21 by a pull rod 24; the opening and closing angle of the two adjusting plates 21 is adjusted by the up and down movement of the lifting rod 231.

[0023] A support drive device 25 is also installed between the support plate 22 and the bracket 1. The support drive device 25 is used to adjust the opening and closing angle of the support plate 22. The support drive device 25 includes a support base 251 installed at the bottom of the support plate 22 and located on the bracket 1, a slider 252 slidably mounted on the support base 251, and a sliding drive device 253 that drives the slider 252 to slide left and right. The support base 251 is fixed on the base frame 11. The support base 251 is provided with a slide rail extending left and right. The bottom of the slider 252 is provided with a slide groove that cooperates with the slide rail. The slider 252 is slidably mounted on the slide rail. One slide rail or two slide rails can be provided. This embodiment does not limit this. The sliding drive device 253 can be an electric cylinder, a pneumatic cylinder, or an electric push rod. To improve the accuracy of the slider 252's movement, in this embodiment, the sliding drive device 253 includes a rack 254 fixed to the bottom of the support base 251 and extending laterally, a gear 255 rotatably mounted on the slider 252 and meshing with the rack 254, and a rotation drive mounted on the slider 252 and driving the gear 255 to rotate. The rotation drive is a stepper motor and a reducer, which together drive the slider to make precise linear movements on the rack. To further reduce the sliding resistance between the slider 252 and the slide rail, a support wheel 256 is rotatably mounted on the opposite side of the slider 252 opposite to the gear 255. The support wheel 256 is supported on the support base 251. The support base 251 is provided with a limiting protrusion for the support wheel 256 to roll, and the wheel surface of the support wheel 256 is provided with a limiting groove. The slider 252 and the support plate 22 are hinged together by a support arm 26. A mounting base 221 is fixed to the bottom of the support plate 22. One end of the support arm 26 is hinged to the slider 252, and the other end is hinged to the mounting base 221. A lifting device 257 is also hinged between the bottom of the support arm 26 and the slider 252 to assist in adjusting the angle of the support plate. The lifting device 257 includes a first electric push rod, the mounting end of which is hinged to the slider 252, and the telescopic end is hinged to the bottom of the support arm 26. The operation of the first electric push rod drives the support arm 26 to rotate around the slider 252.

[0024] By adjusting the coordinated action of the drive device 23 and the support drive device 25, the angles of the adjustment plate and the support plate can be controlled independently or in conjunction, thereby adapting to the assembly requirements of different V-shaped, U-shaped or complex curvature ship plates.

[0025] The clamping assembly 3 includes a bottom support 31 and a stabilizing assembly 32. The bottom support 31 is disposed at the free end of the support plate 22 and is used to press the boat plate 4 from above. The stabilizing assembly 32 is evenly disposed on the adjusting plate 21 and the support plate 22 and is used to provide support from below, so as to stably attach the boat plate 4 to the adjusting plate 21 and the support plate 22.

[0026] The bottom support 31 includes a pressure plate 311 rotatably mounted on the free end of the support plate 22 and a latching mechanism for locking the pressure plate 311. The latching mechanism includes a slot 312 fixed on the support plate 22, and a push rod 313 is slidably connected up and down in the slot 312. A knob 314 is provided on the side wall of the slot 312. After the pressure plate 311 is rotated into place and latched onto the upper surface of the boat plate 4, the push rod 313 slides along the slot 312, supporting the bottom end of the pressure plate 311 and securing it with the knob 314.

[0027] The stabilizing component 32 includes a positioning disk 321 fixed to a support plate 22 or an adjusting plate 21. The support plate 22 or adjusting plate 21 has mounting holes. The positioning disk 321 is fixed to the bottom of the support plate 22 or adjusting plate 21 and extends from the mounting holes to its upper surface. A connecting seat 322 is fixed to the positioning disk 321. A connecting shaft 323 is slidably connected to the connecting seat 322. A top block 324 is fixed to the upper end of the connecting shaft 323, and a protrusion 325 is fixed to the lower end of the connecting shaft 323 through the connecting seat 322. A spring 326 is fitted onto the connecting shaft 323, clamping between the top block 324 and the connecting seat 322 to provide continuous elastic support force. A through hole is provided at the center of the positioning disk 321 and the connecting seat 322. An ejector rod 327 is slidably installed in the through hole. A magnetic suction element 328 is fixed above the ejector rod 327, and a second electric push rod 329 is fixed below it through the through hole. The ship plate 4 is magnetically adsorbed. A rubber pad is provided on the top block 324 to increase friction and prevent scratches on the ship plate.

[0028] During welding, especially when joining two ship plates 4, the high temperature and shrinkage stress generated during welding can cause the ship plates 4 to tend to bend or deform towards the inside of the clamp (i.e., between the two adjusting plates 21). The spring 326 of the stabilizing assembly 32 continuously applies an outward pushing force to the inside of the ship plate through the top block 324, effectively resisting this inward deformation and ensuring that the weld joint remains straight during welding. Marine steel plates may have slight unevenness or minute gaps during assembly. The elastic design of the spring 326 can adapt to these minute thickness variations and gaps, ensuring that the top block 324 is always in contact with the ship plate surface, providing uniform support and avoiding localized suspension. The welding process and the operation of equipment in the surrounding environment can all cause vibrations. The spring 326 can act as a buffer and damper, preventing these vibrations from being transmitted to the positioned ship plates and affecting the welding quality. The bottom support 31 provides rigid locking, while the stabilizing component 32 provides continuous adaptive inward support force via spring 326, effectively resisting shrinkage stress generated during welding, preventing the hull plate 4 from tilting inward or curling, and ensuring welding accuracy. The elastic support element (spring 326) operates under designed preload and has high stiffness within a micro-displacement range, compensating for plate tolerances, eliminating gaps, and ensuring positional stability under stress. Combined with the top rubber pad, it provides reliable support while preventing damage to the hull plate surface.

[0029] The device is also equipped with a controller, which is electrically connected to components such as the lifting drive device, the first electric push rod, and the stepper motor. It presets the adaptation parameters for different curvature boat plates and adjusts the actions of each drive device synchronously through the controller to avoid interference between the movement of the adjustment plate 21 and the support plate 22.

[0030] Working principle: In use, firstly, according to the shape and angle of the ship plate to be welded, the adjusting plate 21 and the supporting plate 22 are adjusted to the predetermined positions by adjusting the driving device 23 and the supporting driving device 25 to form a matching supporting curved surface. Then, the ship plate 4 is hoisted and placed on the supporting surface. The pressure plate 311 is rotated and locked in position. The stabilizing component 32 is activated, and the magnetic suction component 328 contacts and attracts the ship plate 4 under the push of the second electric push rod 329. At the same time, all the top blocks 324 are pressed tightly against the back of the ship plate 4 under the action of the spring 326, completing the initial positioning and stabilization.

[0031] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A positioning fixture for shipbuilding, characterized in that: The system includes a support frame on which a positioning and clamping device is mounted; the positioning and clamping device includes a support component and a clamping component. The support components are symmetrically arranged on the left and right sides of the bracket, and include an adjustment plate and a support plate that are hinged to each other. The end of the adjusting plate away from the support plate is hinged to the bracket; an adjusting drive device is also installed between the adjusting plate and the bracket, and the adjusting drive device is used to adjust the opening and closing angle of the adjusting plate. A support drive device is also installed between the support plate and the bracket, and the support drive device is used to adjust the opening and closing angle of the support plate. The clamping assembly includes a bottom support and a stabilizing assembly; the bottom support is disposed above the support plate and is used to press the boat plate from above; the stabilizing assembly is evenly disposed on the adjusting plate and the support plate and is used to provide support from below.

2. A positioning fixture for shipbuilding according to claim 1, characterized in that: The adjustment drive device includes a lifting rod installed at the bottom center of the two adjustment plates and slidably mounted on the bracket, and a lifting drive device installed between the lifting rod and the bracket; The lifting rod and the adjusting plate are hinged together by a tie rod; the opening and closing angles of the two adjusting plates are adjusted by the up and down movement of the lifting rod.

3. A positioning fixture for shipbuilding according to claim 1, characterized in that: The support drive device includes a support base mounted on the bottom of the support plate and located on a bracket, a slider slidably mounted on the support base, and a sliding drive device for driving the slider to slide left and right; the slider and the support plate are hinged together by a support arm; a lifting device is also hinged between the bottom of the support arm and the slider.

4. A positioning fixture for shipbuilding according to claim 3, characterized in that: The lifting device includes a first electric push rod, the mounting end of which is hinged to the slider; the telescopic end is hinged to the bottom of the support arm; the operation of the first electric push rod drives the support arm to rotate around the slider.

5. A positioning fixture for shipbuilding according to claim 3, characterized in that: The sliding drive device includes a rack fixed to the bottom of the support base and extending to the left and right, a gear rotatably mounted on the slider and meshing with the rack, and a rotation drive mounted on the slider and driving the gear to rotate.

6. A positioning fixture for shipbuilding according to claim 5, characterized in that: A support wheel is rotatably mounted on the slider on the opposite side of the gear, and the support wheel is supported on the support base.

7. A positioning fixture for shipbuilding according to claim 1, characterized in that: The bottom support includes a pressure plate rotatably mounted on the free end of the support plate and a latching mechanism for locking the pressure plate.

8. A positioning fixture for shipbuilding according to claim 1, characterized in that: The stabilizing component includes a positioning plate fixed to the support plate or the adjusting plate, a connecting seat fixed to the positioning plate, a connecting shaft slidably connected to the connecting seat, a top block fixed above the connecting shaft, and a protrusion fixed at the lower end passing through the connecting seat; a spring is fitted on the connecting shaft, and the spring is clamped between the top block and the connecting seat. The positioning plate and the connecting seat have a through hole at their center. A push rod is slidably installed in the through hole. A magnetic suction piece is fixed above the push rod, and a second electric push rod is fixed below it through the through hole.

9. A positioning fixture for shipbuilding according to claim 8, characterized in that: A rubber pad is provided on the top block.

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