Tool plate for controlling deformation during hydraulic pipe welding

Abstract

The utility model provides a tooling plate for controlling deformation during hydraulic pipe welding, which comprises a hydraulic pipe, the hydraulic pipe comprises a hard pipe and a flange, the two ends of the hard pipe are connected with the flange, the flange is provided with more than two assembly holes, the tooling plate comprises a limiting device, the limiting device comprises a limiting plate, the limiting plate is arranged on one side surface of the flange, and the flange is provided with more than two assembly holes. The limiting plate is provided with an installation hole, the installation hole is matched with the assembly hole, a fastener is arranged between the installation hole and the assembly hole in a penetrating mode, operation is convenient, welding is convenient, and the flange is not prone to deformation.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic pipe welding equipment, and specifically to a tooling plate for controlling deformation during hydraulic pipe welding. Background Technology

[0002] Hydraulic pipes are often used in the piping system of ships. For convenient connection between hydraulic pipes, flanges are usually installed on both sides of the hydraulic pipes. The connection between hydraulic pipes via flanges does not require the use of transition joints, which simplifies the connection process. Welding is usually used to connect the flange and the hydraulic pipe. In order to ensure that the flange does not deform during the welding process, an auxiliary plate is usually installed on one side of the flange and connected to the flange. However, in the existing technology, the auxiliary plate needs to be connected to the flange through a fixture or tooling, which is inconvenient to carry and cannot protect the threaded holes on the flange during welding.

[0003] For example, patent application number 202410837303.2, published on August 23, 2024, discloses a standardized production tooling and method for flange pipe fittings. This method involves manufacturing individual flange pipe fittings using fixed components. Specifically, a limiting component restricts the position of the flange and pipe fitting, and temporarily fixes them by spot welding. Two flange pipe fittings are stacked and fixed on a rotating platform. A pressing component extending above the rotating platform abuts against the upper flange pipe fitting, limiting the height of the two flange pipe fittings. The rotating platform drives the two flange pipe fittings to rotate. During rotation, a welding torch is used to weld the circumferential weld between the pipe fitting and the flange of the upper and lower flange pipe fittings. As long as the welding torch is fixed, no advanced welding skills are required to weld the circumferential weld. Under the constraint of the pressing component, the flange pipe will not deform during welding, and the flatness error of the two flange pipe fittings welded by the calibration component is extremely small.

[0004] In the above literature, before welding, two flange fittings are overlapped, with the top of the upper flange fitting abutting against the pressing rod. By overlapping the two flange fittings, deformation of the lower flange fitting can be prevented when welding. After welding, the upper flange fitting is removed. During the welding process, the threaded holes on the lower flange fitting are not properly protected and may deform due to high temperature and stress. Deformation of the threaded holes may render them unusable, affecting subsequent assembly processes. Furthermore, the upper and lower flange fittings are only pressed together by the pressing rod to limit their vertical movement. When the rotary table rotates, the upper and lower flange fittings may undergo relative horizontal displacement, preventing the upper flange fitting from completely covering the lower flange fitting. This results in deformation of the lower flange fitting in the unpressed areas during welding. Summary of the Invention

[0005] This utility model provides a tooling plate for controlling deformation during hydraulic pipe welding, which is easy to operate, facilitates welding, and makes the flange less prone to deformation.

[0006] To achieve the above objectives, the technical solution of this utility model is: a tooling plate for controlling deformation during hydraulic pipe welding, used for hydraulic pipe welding, wherein the hydraulic pipe includes a rigid pipe and a flange, both ends of the rigid pipe are connected to the inner side of the flange, the flange is provided with two or more assembly holes, and includes a limiting device, wherein the limiting device includes a limiting plate, the limiting plate is provided on the outer side of the flange, the cross-sectional area of ​​the limiting plate is not less than the cross-sectional area of ​​the flange, the limiting plate is provided with two or more mounting holes, the mounting holes are matched with the assembly holes, and fasteners are passed between the mounting holes and the assembly holes.

[0007] In the above configuration, the flange is welded to the rigid pipe on the inner side, while the flange is connected to the limiting plate on the outer side. Both ends of the rigid pipe need to be welded to the inner side of the flange. Before welding, to prevent deformation of the flange during welding, the outer side of the flange is connected to the limiting plate with fasteners. During welding, due to the setting of the limiting plate, and the fact that the cross-sectional area of ​​the limiting plate is larger than that of the flange, the limiting plate can completely cover the outer side of the flange, effectively strengthening the flange and preventing deformation during welding. Furthermore, the fasteners are inserted between the mounting hole and the assembly hole, ensuring that the assembly hole will not deform. After welding is completed and naturally cooled, the limiting plate is removed to complete the welding between the flange and the rigid pipe. The operation is convenient and does not require a complicated disassembly process to complete the welding between the flange and the rigid pipe.

[0008] Furthermore, the cross-section of the flange is circular, elliptical, or rectangular, and the shape of the limiting plate corresponds to the shape of the flange.

[0009] The above settings, with the limiting plate and flange shape structure correspondingly, can ensure the stability of the flange during welding, avoid material waste due to an excessively large limiting plate, and avoid flange deformation during welding due to an insufficiently small limiting plate that does not fully cover the flange. Furthermore, the limiting plate can be customized according to different flange shapes to meet the needs of different flanges.

[0010] Furthermore, the mounting holes on the limiting plate and the assembly holes on the flange are identical in position, size, and number.

[0011] The above settings ensure that the positions, dimensions, and quantities of the mounting holes and assembly holes are consistent, allowing the limiting plate and flange to connect accurately, providing connection stability, and reducing the alignment time between the limiting plate and flange.

[0012] Furthermore, both the mounting hole and the assembly hole are provided with threads.

[0013] The above configuration, with threads on the mounting holes and assembly holes, provides connection points for fasteners, allowing them to pass through the mounting holes and reach the assembly holes, thus completing a secure connection between the limit plate and the flange.

[0014] Furthermore, the fastener is a bolt.

[0015] The above setup ensures a tight fit between the limit plate and the flange. The bolted connection can withstand vibrations and impacts from environmental conditions, maintaining connection stability. Furthermore, the bolts can be easily installed and removed using appropriate tools, such as a screwdriver, making it convenient to install or remove the limit plate from the flange and saving time.

[0016] Furthermore, the thickness of the limiting plate is greater than 30mm.

[0017] With the above settings, a limiting plate thickness greater than 30mm can provide higher strength and rigidity, better withstand the stress and deformation generated during welding, and enable the limiting plate to provide stable support for the flange during welding, reducing the possibility of flange deformation. Attached Figure Description

[0018] Figure 1 This is a front view of the connection between the present invention and the hydraulic pipe.

[0019] Figure 2 This is a top view of the connection between the present invention and the hydraulic pipe.

[0020] Figure 3 This is a schematic diagram of the elliptical limiting plate structure in this utility model.

[0021] Figure 4 This is a schematic diagram of the rectangular limiting plate structure in this utility model.

[0022] Figure 5 This is a schematic diagram of the circular limiting plate structure in this utility model.

[0023] Figure 6 This is a front view of another embodiment of the present invention connected with a hydraulic pipe.

[0024] Figure 7 This is a schematic diagram of another embodiment of the limiting plate in this utility model.

[0025] Reference numerals: 1-Hydraulic pipe; 11-Hard pipe; 12-Flange; 121-Assembly hole; 2-Limit plate; 21-Mounting hole; 3-Fastener. Detailed Implementation

[0026] like Figure 1-5As shown, a tooling plate for controlling deformation during the welding of hydraulic pipes includes a hydraulic pipe 1, which comprises a rigid pipe 11 and a flange 12. Both ends of the rigid pipe 11 are connected to the flange 12. The flange 12 has two or more assembly holes 121 and includes a limiting device. The limiting device includes a limiting plate 2, which is disposed on one side of the flange 12. The limiting plate 2 has mounting holes 21 that match the assembly holes 121. Fasteners 3 pass through the mounting holes 21 and the assembly holes 121. The flange 12 is welded to the rigid pipe 11 at an inner surface, and the flange 12 is connected to the limiting plate 2. The contact surface is the outer side of flange 12. Both ends of rigid pipe 11 need to be welded to the inner side of flange 12. Before welding, in order to prevent flange 12 from deforming during welding, the outer side of flange 12 is connected to limit plate 2 by fastener 3. During the welding process, due to the setting of limit plate 2, the strength of flange 12 can be effectively strengthened, preventing flange 12 from deforming during welding. In addition, the fastener 3 is inserted between mounting hole 21 and assembly hole 121, which can also ensure that assembly hole 121 will not be deformed. After welding is completed and naturally cooled, limit plate 2 is removed to complete the welding between flange 12 and rigid pipe 11.

[0027] like Figure 1-2 As shown, the mounting holes 21 on the limiting plate 2 and the assembly holes 121 on the flange 12 are in the same position, size and number. The same position, size and number of mounting holes 21 and assembly holes 121 enable the limiting plate 2 and the flange 12 to be accurately connected, providing connection stability and reducing the alignment time between the limiting plate 2 and the flange 12.

[0028] Both the mounting hole 21 and the assembly hole 121 are threaded. The threads in the mounting hole 21 and the assembly hole 121 provide a connection position for the fastener 3, so that the fastener 3 can be fastened through the mounting hole 21 and then reach the assembly hole 121, thus completing a stable connection between the limit plate 2 and the flange 12.

[0029] Fastener 3 is a bolt, which ensures a tight fit between the limit plate 2 and the flange 12. The bolted connection can withstand vibration and impact caused by environmental conditions, maintain the stability of the connection, and can be installed and removed using appropriate tools, such as a screwdriver. This makes it convenient to install or remove the limit plate 2 from the flange 12, saving time.

[0030] The limiting plate 2 is thicker than 30mm. The thickness of the limiting plate 2 is greater than 30mm, which can provide higher strength and rigidity, and can better withstand the stress and deformation generated during the welding process. This allows the limiting plate 2 to provide stable support for the flange 12 during welding, reducing the possibility of flange 12 deformation.

[0031] like Figure 3-5As shown, the flange 12 is provided with a circular structure, an elliptical structure, and a rectangular structure. The limiting plate 2 is set accordingly with the shape and structure of the flange 12. The corresponding setting of the limiting plate 2 with the shape and structure of the flange 12 can ensure the stability of the flange 12 during welding, avoid material waste due to the limiting plate 2 being too large, and avoid deformation of the flange 12 during welding due to the limiting plate 2 being too small and not completely covering the flange 12. In addition, the limiting plate 2 can be customized according to different shapes of flanges 12 so that the limiting plate 2 can meet the needs of different flanges 12.

[0032] like Figure 6 and 7 As shown, in another embodiment, the hydraulic pipe is a U-shaped pipe. A limiting plate 2 is provided on the outside of the flanges 12 at both ends of the hydraulic pipe. The limiting plate 2 is provided with mounting holes corresponding to the mounting holes on the flanges 12. Fasteners 3 are provided in the mounting holes and mounting holes to achieve fixation. Then, the two flanges 12 are installed on the hydraulic pipe at the same time. The setting of a limiting plate 2 can ensure that the welding height at both ends is equal when the hydraulic pipe is a U-shaped pipe. At the same time, the limiting plate 12 can also prevent the two flanges from deforming.

[0033] The working principle of this utility model is as follows: The flange 12 is welded to the rigid pipe 11 on the inner side of the flange 12, and the flange 12 is connected to the limiting plate 2 on the outer side of the flange 12. Both ends of the rigid pipe 11 need to be welded to the inner side of the flange 12. Before welding, in order to prevent the flange 12 from deforming during welding, the outer side of the flange 12 is connected to the limiting plate 2 by fasteners 3. During the welding process, due to the setting of the limiting plate 2, the strength of the flange 12 can be effectively strengthened, preventing the flange 12 from deforming during the welding process. In addition, the fasteners 3 are inserted between the mounting hole 21 and the assembly hole 121, which can also ensure that the assembly hole 121 will not be deformed. After the welding is completed and naturally cooled, the limiting plate 2 is removed to complete the welding between the flange 12 and the rigid pipe 11.

Claims

1. A tooling plate for controlling deformation during hydraulic pipe welding, used for welding hydraulic pipes, wherein the hydraulic pipe comprises a rigid pipe and a flange, both ends of the rigid pipe are connected to the inner surface of the flange, and the flange is provided with two or more assembly holes, characterized in that: The device includes a limiting device, which includes a limiting plate disposed on the outer side of the flange. The cross-sectional area of ​​the limiting plate is not less than the cross-sectional area of ​​the flange. The limiting plate is provided with two or more mounting holes, which are matched with assembly holes. Fasteners are inserted between the mounting holes and the assembly holes.

2. The tooling plate for controlling deformation during hydraulic pipe welding according to claim 1, characterized in that: The flange has a circular, elliptical, or rectangular cross-section, and the shape of the limiting plate corresponds to the shape of the flange.

3. The tooling plate for controlling deformation during hydraulic pipe welding according to claim 1, characterized in that: The mounting holes on the limiting plate and the assembly holes on the flange are in the same position, size and number.

4. The tooling plate for controlling deformation during hydraulic pipe welding according to claim 1, characterized in that: Both the mounting hole and the assembly hole are threaded.

5. The tooling plate for controlling deformation during hydraulic pipe welding according to claim 1, characterized in that: The fastener is a bolt.

6. The tooling plate for controlling deformation during hydraulic pipe welding according to claim 1, characterized in that: The thickness of the limiting plate is greater than 30mm.

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