A welding fixing device for ship flange

Abstract

The utility model discloses a kind of welding fixing devices for ship flange, belong to shipbuilding technical field, its technical scheme main points include pedestal, the top of the pedestal is provided with recess, the inside of the recess is provided with flange fixing assembly, the right side of the pedestal top is provided with pipeline placing assembly, the flange fixing assembly includes the drive motor of fixed connection in the outer side of pedestal, can solve the welding fixing device for ship flange of existing ship usually lacks multidimensional precision adjusting structure, it is inconvenient to carry out the coordinated adjustment of axial position and radial clamping to flange, to cause the positioning deviation of flange and pipeline to be larger, coaxiality is insufficient, affect the sealing performance and structural strength after welding, and in pipeline placement aspect, usually lack self-adapting adjustment and protection structure, it is inconvenient to flexibly adjust the butt joint position of pipeline according to flange position, to cause the butt joint gap of pipeline and flange to be uneven, affect the problem of welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, and in particular to a welding fixing device for ship flanges. Background Technology

[0002] Marine flanges are core components in marine piping systems and hull structure connections. They are mainly used for sealing connections and force transmission between pipes, equipment, or hull sections. Since ships are in a marine environment with high salt spray, high vibration, and high water pressure for extended periods, and must withstand impact loads during navigation, the welding quality of flanges directly affects the safety and service life of the ship. If the flange is not positioned accurately during welding or deforms during the welding process, it may lead to failure of the connection seal, such as water or oil leakage, reduced structural strength, or even navigation accidents. Therefore, the fixing and positioning of flanges during welding are critical process steps.

[0003] In daily welding work, there are often situations where pipes and flanges are welded and fixed together. Existing fixing devices cannot properly fix flanges of different sizes; existing fixing devices are also inconvenient to use when welding flanges and pipes.

[0004] The existing patent (publication number: CN217799992U) discloses a fixing device for flange welding. By setting a fixing component, rotating the adjusting block drives the lead screw to rotate, and the rotation of the lead screw causes the fixing block to slide along the slide groove, thereby fixing the flange. The movement of the fixing block can adapt to flanges of different sizes, which to a certain extent solves the problem that the existing fixing device cannot fix flanges of different sizes well, thus improving its practicality.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, existing welding and fixing devices for ship flanges typically lack multi-dimensional precision adjustment structures, making it difficult to coordinate the axial position and radial clamping of the flange. This results in significant positioning deviations and insufficient coaxiality between the flange and the pipeline, affecting the sealing performance and structural strength after welding. Furthermore, they often lack adaptive adjustment and protection structures for pipeline placement, making it difficult to flexibly adjust the pipeline's docking position according to the flange location. This leads to uneven docking gaps between the pipeline and the flange, affecting welding efficiency.

[0006] Therefore, a welding fixing device for ship flanges is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a welding and fixing device for ship flanges, which can solve the problems of existing welding and fixing devices for ship flanges, which usually lack multi-dimensional precision adjustment structure, making it inconvenient to coordinate the axial position and radial clamping of the flange. This results in large positioning deviations and insufficient coaxiality between the flange and the pipeline, affecting the sealing performance and structural strength after welding. Moreover, in terms of pipeline placement, there is usually a lack of adaptive adjustment and protection structure, making it inconvenient to flexibly adjust the pipeline docking position according to the flange position, resulting in uneven docking gap between the pipeline and the flange, which affects welding efficiency.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a welding and fixing device for ship flanges, comprising a base, a groove on the top of the base, a flange fixing assembly disposed inside the groove, a pipe placement assembly disposed on the right side of the top of the base, the flange fixing assembly including a drive motor fixedly connected to the outside of the base, a drive screw fixedly connected to the output end of the drive motor, the side of the drive screw away from the drive motor being rotatably connected to the groove, a movable seat threadedly connected to the outside of the drive screw, a support seat fixedly connected to the top of the movable seat, a fixing sleeve fixedly connected to the outside of the support seat, a linkage rod fixedly connected to the outside of the fixing sleeve, and a fixing support fixedly connected to the outside of the linkage rod.

[0009] Preferably, the pipe placement assembly includes an adjustment frame fixedly connected to the top of the base, a synchronous motor fixedly connected to the outside of the adjustment frame, an adjustment screw fixedly connected to the output end of the synchronous motor, and a connecting seat connected to the outside of the adjustment screw.

[0010] Preferably, a limiting support rod is fixedly connected to the inner side of the adjusting frame, the limiting support rod is slidably connected to the connecting seat, and a placement seat is fixedly connected to the inner side of the connecting seat.

[0011] Preferably, a protective pad is adhered to the top of the placement base, and the protective pad is made of rubber.

[0012] Preferably, a servo motor is fixedly connected to the inner side of the support base, a drive screw is fixedly connected to the output end of the servo motor, a drive linkage seat is threadedly connected to the outer side of the drive screw, and the drive linkage seat is fixedly connected to the fixed support base.

[0013] Preferably, a limiting groove is formed inside the groove, and a limiting block is slidably connected inside the limiting groove, and the limiting block is fixedly connected to the movable seat.

[0014] Preferably, a control motherboard is provided on the outer side of the base.

[0015] Preferably, the base is fixedly connected to the bottom of a support leg, and the bottom of the support leg is fixedly connected to a rubber foot pad.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This application achieves precise positioning and stable clamping of ship flanges through a flange fixing assembly, improving the positioning accuracy and fixing reliability during flange welding. Compared with traditional ship flange welding fixing devices, which suffer from inaccurate positioning and insufficient clamping force due to manual support, this assembly can realize the functions of flange axial position adjustment, radial stable clamping, and anti-welding offset. It solves the problems of insufficient coaxiality between flange and pipeline due to positioning deviation, loosening of flange during welding due to insufficient clamping force, and deformation of flange under stress due to lack of stable support structure in traditional methods.

[0018] 2. This application achieves stable support and adaptive position adjustment for the pipe to be welded through the pipe placement component, improving the accuracy and installation efficiency of the pipe-flange connection. Compared with the traditional pipe placement method, which suffers from unstable simple support and cumbersome adjustment, this component can achieve flexible adjustment of pipe height and horizontal position, stable load-bearing and anti-scratch function. It solves the problems of uneven connection gap caused by unstable pipe support, welding efficiency affected by time-consuming and laborious adjustment process, and surface damage caused by hard contact between pipe and placement structure in traditional structures. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the welding fixing device for ship flanges according to this utility model;

[0020] Figure 2 This is a schematic diagram of the flange fixing assembly of this utility model;

[0021] Figure 3 This is a schematic diagram of the pipe placement assembly of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the fixing sleeve of this utility model;

[0023] Figure 5 This is a cross-sectional view of the base of this utility model.

[0024] In the diagram, 1. Base; 2. Groove; 3. Control main board; 4. Flange fixing assembly; 401. Drive motor; 402. Drive screw; 403. Moving seat; 404. Support seat; 405. Fixing sleeve; 406. Linkage rod; 407. Fixing support; 5. Pipe placement assembly; 501. Adjusting frame; 502. Synchronous motor; 503. Adjusting screw; 504. Connecting seat; 505. Limiting support rod; 506. Placement seat; 507. Protective pad; 6. Servo motor; 7. Drive screw; 8. Drive linkage seat; 9. Limiting slide; 10. Limiting block; 11. Support leg; 12. Rubber foot pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 The present invention provides the following technical solution:

[0027] A welding and fixing device for a ship flange includes a base 1, a groove 2 on the top of the base 1, a flange fixing assembly 4 inside the groove 2, and a pipe placement assembly 5 on the right side of the top of the base 1. The flange fixing assembly 4 includes a drive motor 401 fixedly connected to the outside of the base 1, a drive screw 402 fixedly connected to the output end of the drive motor 401, a drive screw 402 rotatably connected to the groove 2 on the side of the drive screw 402 away from the drive motor 401, a movable seat 403 threadedly connected to the outside of the drive screw 402, a support seat 404 fixedly connected to the top of the movable seat 403, a fixing sleeve 405 fixedly connected to the outside of the support seat 404, a linkage rod 406 fixedly connected to the outside of the fixing sleeve 405, and a fixing support 407 fixedly connected to the outside of the linkage rod 406.

[0028] In this embodiment: By activating the servo motor 6 inside the support base 404, the servo motor 6 drives the drive screw 7 to rotate, driving the linkage seat 8 to move axially along the drive screw 7 and bringing the fixed support 407 closer to the flange until the fixed support 407 is in tight contact with the inner wall of the flange, completing the radial clamping of the flange. At this time, the fixed sleeve 405 outside the support base 404 provides support for the fixed support 407 through the linkage rod 406, preventing the fixed support 407 from deforming due to excessive clamping force. Subsequently, the drive motor 401 outside the base 1 is activated, and the drive motor 401 drives... The drive screw 402 rotates within the groove 2, and the movable seat 403, which is threadedly connected to the drive screw 402, begins to move along the screw axis. The support seat 404 on the top of the movable seat 403 and the clamped flange move synchronously. During the movement, the limiting block 10 at the bottom of the movable seat 403 slides in the limiting groove 9 within the groove 2 to ensure the smooth movement of the movable seat 403 until the flange is adjusted to the welding position corresponding to the pipeline. Throughout the process, the control board 3 adjusts the motor operation in real time to ensure clamping force and movement accuracy, ultimately achieving precise positioning and stable fixing of the flange.

[0029] Specifically, such as Figure 3 As shown, the pipe placement assembly 5 includes an adjustment frame 501 fixedly connected to the top of the base 1. A synchronous motor 502 is fixedly connected to the outside of the adjustment frame 501. An adjustment screw 503 is fixedly connected to the output end of the synchronous motor 502. A connecting seat 504 is connected to the outside of the adjustment screw 503.

[0030] Specifically, such as Figure 3 As shown, a limiting support rod 505 is fixedly connected to the inner side of the adjusting frame 501. The limiting support rod 505 is slidably connected to the connecting seat 504. A placement seat 506 is fixedly connected to the inner side of the connecting seat 504.

[0031] Specifically, such as Figure 3 As shown, a protective pad 507 is attached to the top of the placement base 506. The protective pad 507 is made of rubber.

[0032] In this embodiment: the pipe to be welded is placed on the placement seat 506. The rubber protective pad 507 on the top of the placement seat 506 contacts the surface of the pipe, which can prevent the pipe from being scratched by hard contact with the placement seat 506, and also prevent the pipe from sliding through friction. When the position of the pipe needs to be adjusted, the synchronous motor 502 on the outside of the adjusting frame 501 is started. The synchronous motor 502 drives the adjusting screw 503 to rotate. The connecting seat 504 connected to the adjusting screw 503 begins to move due to the thread action. Due to the limiting support rod 505 on the inside of the adjusting frame 501... Passing through the connecting seat 504, the connecting seat 504 can only move smoothly along the axial direction of the limiting support rod 505 to avoid tilting. The placement seat 506 inside the connecting seat 504 moves synchronously with the connecting seat 504, driving the pipe to gradually approach the fixed flange. The control main board 3 adjusts the operation of the synchronous motor 502 according to the flange position parameters to make the pipe end and the flange welding surface accurately connected. During the connection process, the protective gasket 507 continuously protects the pipe surface, and the limiting support rod 505 ensures smooth movement, finally achieving accurate connection between the pipe and the flange, preparing for welding.

[0033] Specifically, such as Figure 4 As shown, a servo motor 6 is fixedly connected to the inner side of the support base 404, a drive screw 7 is fixedly connected to the output end of the servo motor 6, a drive linkage seat 8 is threadedly connected to the outer side of the drive screw 7, and the drive linkage seat 8 is fixedly connected to the fixed support base 407.

[0034] Specifically, such as Figure 5 As shown, a limiting groove 9 is provided inside the groove 2, and a limiting block 10 is slidably connected inside the limiting groove 9. The limiting block 10 is fixedly connected to the movable seat 403.

[0035] In this embodiment: By setting up a servo motor 6, a drive screw 7, and a drive linkage seat 8, when precise clamping and fixing of the flange is required, the servo motor 6 inside the support seat 404 starts to operate. The output end of the servo motor 6 drives the drive screw 7 to rotate synchronously. Since the drive screw 7 and the drive linkage seat 8 are connected by threads, the rotation of the drive screw 7 is converted into linear motion of the drive linkage seat 8 along the screw axis. The drive linkage seat 8 is fixedly connected to the fixed support 407, so it will drive the fixed support 407 to move together, gradually approaching the inner wall of the flange to be fixed. As the fixed support 407 moves, it moves closer to the inner wall of the flange. The contact pressure gradually increases until the flange is firmly clamped. By setting the limiting groove 9 and the limiting block 10, when the drive motor 401 drives the drive screw 402 to rotate, the limiting block 10, which is fixedly connected to the moving seat 403, will move synchronously with the moving seat 403. The limiting block 10 is embedded in the limiting groove 9 inside the groove 2. The limiting groove 9 will constrain the movement trajectory of the limiting block 10, ensuring that the moving seat 403 maintains a stable linear movement when it drives the top support seat 404 and the flange to move. This avoids deviation in the docking position between the flange and the pipeline due to movement offset, and provides a guarantee for the coaxiality of subsequent welding.

[0036] Specifically, such as Figure 1 As shown, a control motherboard 3 is provided on the outer side of the base 1.

[0037] Specifically, such as Figure 1 As shown, a support leg 11 is fixedly connected to the bottom of the base 1, and a rubber foot pad 12 is fixedly connected to the bottom of the support leg 11.

[0038] In this embodiment: By setting the control board 3, before using the entire device, the operator needs to preset the flange and pipe docking parameters on the control board 3 outside the base 1, including flange movement distance, pipe adjustment height, clamping force threshold, etc., to ensure that the actions of each component are coordinated and ultimately achieve precise docking of the flange and pipe. By setting the support legs 11 and rubber pads 12, the rubber pads 12 at the bottom of the support legs 11 are in direct contact with the ground. The properties of the rubber material can increase the friction with the ground and prevent the device from sliding due to vibration or collision during welding operations. At the same time, when slight vibration occurs during welding, the rubber pads 12 will absorb the vibration energy through their own elastic deformation, reducing the transmission of vibration to the base 1 and the components above, and preventing the flange and pipe from shifting due to vibration, thus providing a stable basic support environment for the welding process.

[0039] Working Principle: When using this welding and fixing device for ship flanges, the device is first placed in the shipbuilding work area. The legs 11 at the bottom of the base 1 contact the ground through rubber feet 12. The rubber feet increase friction with the ground and cushion minor vibrations during operation, preventing displacement of the device due to vibration. The control board 3 on the outside of the base 1 is pre-loaded with control commands to coordinate the operation of various motors. Next, the flange is fixed by placing the flange to be welded on the fixed support 407. At this time, the servo motor 6 is started, and its output drives the drive screw 7 to rotate. The drive linkage seat 8 on the outside of the drive screw 7 is connected by threads along the screw shaft. The drive linkage seat 8 is fixedly connected to the fixed support 407, thus driving the fixed support 407 to move synchronously, causing the fixed support 407 to extend and fix the inner wall of the flange. At this time, the fixing sleeve 405 on the outside of the support seat 404 is connected to the fixed support 407 through the linkage rod 406. The fixing sleeve 405 provides a stable support point for the linkage rod 406, and the linkage rod 406 enhances the structural stability of the fixed support 407 during the clamping process, preventing the fixed support 407 from deforming due to force, ensuring that the flange is firmly fixed in the preset position, and preventing the welding accuracy from being affected by the flange loosening during welding. Then, the drive motor 401 is started, and then the drive motor 401 runs and drives the drive screw 402 connected to the output end in the groove 2. Internal rotation: Since the drive screw 402 and the movable seat 403 are connected by a thread, the rotation of the screw is converted into linear motion of the movable seat 403 along the screw axis. During the movement of the movable seat 403, the limiting groove 9 inside the groove 2 constrains the limiting block 10 embedded therein. The limiting block 10 is fixedly connected to the movable seat 403, so it will move synchronously with the movable seat 403. Through the cooperation of the groove and the slider, the movable seat 403 is effectively prevented from deviating or shaking during movement, ensuring that the movable seat 403 drives the top support seat 404 to move smoothly until the flange is adjusted to the approximate position corresponding to the pipe to be welded. After the flange adjustment and fixing are completed, the placement and position adjustment of the pipe are started. First, the pipe to be welded to the flange is placed in... On the placement seat 506, the rubber protective pad 507 adhered to the top of the placement seat 506 directly contacts the pipe. The rubber material is elastic, which not only prevents wear on the pipe surface caused by hard contact between the pipe and the placement seat 506, but also increases the friction between the pipe and the placement seat 506, preventing the pipe from slipping during subsequent adjustments. Then, the synchronous motor 502 of the pipe placement assembly 5 is started. The synchronous motor 502 drives the adjusting screw 503 at the output end to rotate. The connecting seat 504 on the outside of the adjusting screw 503 begins to move due to the thread action. Meanwhile, the limiting support rod 505 on the inside of the adjusting frame 501 passes through the connecting seat 504, forming a guiding constraint on the movement direction of the connecting seat 504, so that the connecting seat 504 can only move smoothly along the axial direction of the limiting support rod 505.To prevent the connector 504 from tilting during movement, the inner mounting base 506 of the connector 504 moves synchronously with it, thereby adjusting the height of the pipe until the pipe end precisely aligns with the welding surface of the flange. Throughout the adjustment process, the control board 3 receives real-time position feedback information from each component and automatically adjusts the speed and direction of the drive motor 401, servo motor 6, and synchronous motor 502 according to preset welding position parameters. This ensures that parameters such as the flange-pipe connection gap and coaxiality meet welding requirements. Once the flange and pipe are adjusted to the ideal welding position, the control board 3 issues a command to stop all motors.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding fixing device for ship flanges, comprising a base (1), characterized in that: The base (1) has a groove (2) on its top. A flange fixing assembly (4) is provided inside the groove (2). A pipe placement assembly (5) is provided on the right side of the top of the base (1). The flange fixing assembly (4) includes a drive motor (401) fixedly connected to the outside of the base (1). A drive screw (402) is fixedly connected to the output end of the drive motor (401). The side of the drive screw (402) away from the drive motor (401) is rotatably connected to the groove (2). A movable seat (403) is threadedly connected to the outside of the drive screw (402). A support seat (404) is fixedly connected to the top of the movable seat (403). A fixing sleeve (405) is fixedly connected to the outside of the support seat (404). A linkage rod (406) is fixedly connected to the outside of the fixing sleeve (405). A fixing support (407) is fixedly connected to the outside of the linkage rod (406).

2. The welding fixing device for ship flanges according to claim 1, characterized in that: The pipe placement assembly (5) includes an adjustment frame (501) fixedly connected to the top of the base (1). A synchronous motor (502) is fixedly connected to the outside of the adjustment frame (501). An adjustment screw (503) is fixedly connected to the output end of the synchronous motor (502). A connecting seat (504) is connected to the outside of the adjustment screw (503).

3. The welding fixing device for ship flanges according to claim 2, characterized in that: The inner side of the adjusting frame (501) is fixedly connected to a limiting support rod (505), the limiting support rod (505) is slidably connected to the connecting seat (504), and the inner side of the connecting seat (504) is fixedly connected to a placement seat (506).

4. The welding fixing device for ship flanges according to claim 3, characterized in that: A protective pad (507) is adhered to the top of the placement base (506), and the protective pad (507) is made of rubber.

5. The welding fixing device for ship flanges according to claim 1, characterized in that: A servo motor (6) is fixedly connected to the inner side of the support base (404), and a drive screw (7) is fixedly connected to the output end of the servo motor (6). A drive linkage seat (8) is threadedly connected to the outer side of the drive screw (7), and the drive linkage seat (8) is fixedly connected to the fixed support (407).

6. The welding fixing device for ship flanges according to claim 1, characterized in that: The groove (2) has a limiting groove (9) inside, and a limiting block (10) is slidably connected inside the limiting groove (9). The limiting block (10) is fixedly connected to the movable seat (403).

7. A welding fixing device for ship flanges according to claim 1, characterized in that: A control motherboard (3) is provided on the outside of the base (1).

8. A welding fixing device for ship flanges according to claim 1, characterized in that: The base (1) is fixedly connected to the bottom of a support leg (11), and the bottom of the support leg (11) is fixedly connected to a rubber foot pad (12).

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