An internal welding reinforcement device and method for U-ribs of orthotropic steel bridge decks

Abstract

The present invention relates to the technical field of steel bridge welding, and discloses an internal welding reinforcement device and method for U-ribs of orthotropic steel bridge decks. The device comprises an automatic welding device, a first slide rail, a movable pad, an outer magnetic attraction mechanism, and a control system. The automatic welding device is equipped with a welding gun and a monitoring assembly. The monitoring assembly is used to monitor the position of the inner weld of the U-rib. The first slide rail is installed at the inner weld of the U-rib along the welding direction. The movable pad is slidably connected to the first slide rail, with the top of the movable pad contacting the steel bridge deck and the bottom contacting the inner wall of the U-rib. The movable pad is connected to the automatic welding device via a connecting rod. The outer magnetic attraction mechanism is slidably connected to the outer wall of the U-rib along the welding direction. The outer magnetic attraction mechanism is located at the outer weld of the U-rib. The present invention can achieve uniform penetration and high-quality forming of the inner weld of the U-rib, prevent molten pool sagging, and significantly improve construction efficiency and overhead welding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bridge welding, and in particular to an internal welding reinforcement device and method for U-ribs of orthotropic steel bridge decks. Background Art

[0002] Orthotropic steel bridge decks with closed U-ribs are widely used in the construction of large-span steel bridges due to their superior structural performance. In the early days of steel bridges, there were no internal welds between the U-ribs and the bridge deck. After years of operation, cracks were prone to form around the welds. In this case, reinforcement can be carried out by adding internal welds.

[0003] However, unlike the fabrication process for newly constructed steel bridge decks, U-rib internal welding during operation requires overhead welding using automated welding equipment. Overhead welding is the most challenging of all welding positions. The primary difficulty lies in the molten pool drooping due to gravity, leading to issues such as backside weld depression, frontal weld beading, and poor weld formation, compromising weld quality. Furthermore, traditional U-rib internal welding methods may require multiple passes to achieve the desired weld profile, increasing welding time and reducing construction efficiency.

[0004] Therefore, an internal welding reinforcement device and method for U-rib of orthotropic steel bridge deck are proposed. Summary of the Invention

[0005] The object of the present invention is to provide an internal welding reinforcement device and method for U-ribs of orthotropic steel bridge decks, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above-mentioned object, the present invention provides the following solution: The present invention provides an internal welding reinforcement device for U-ribs of orthotropic steel bridge decks, comprising:

[0007] Automatic welding equipment, wherein a welding gun and a monitoring component are installed on the automatic welding equipment; the monitoring component is used to monitor the position of the inner weld of the U rib;

[0008] a first slide rail, the first slide rail being installed at an inner weld of the U rib along a welding direction;

[0009] A movable pad, the movable pad being slidably connected to the first slide rail, the top of the movable pad being in contact with the steel bridge deck, and the bottom being in contact with the inner side wall of the U-rib; the movable pad being connected to the automatic welding equipment via a connecting rod;

[0010] An outer magnetic attraction mechanism, the outer magnetic attraction mechanism being slidably connected to the outer wall of the U-rib along the welding direction; the outer magnetic attraction mechanism being located at the outer weld of the U-rib;

[0011] The automatic welding equipment, the welding gun, the monitoring component and the outer magnetic attraction mechanism are all electrically connected to the control system.

[0012] According to the present invention, an internal welding reinforcement device for U-ribs of orthotropic steel bridge decks is provided. The movable liner includes a ceramic inner layer and a metal outer layer. The ceramic inner layer and the metal outer layer are fixedly connected, and the ceramic inner layer is arranged close to the inner weld of the U-rib.

[0013] According to the present invention, an internal welding reinforcement device for U-ribs of orthotropic steel bridge decks is provided, wherein the outer magnetic attraction mechanism comprises:

[0014] a second slide rail, the second slide rail being fixedly mounted on an outer side wall of the U rib along a welding direction;

[0015] A magnet, wherein the magnet is slidably connected to the second slide rail; the top of the magnet is in contact with the steel bridge deck;

[0016] A driving device, the driving device being mounted on the outer side wall of the U-rib; the driving device being used to drive the magnet to slide along the second slide rail;

[0017] Wherein, the driving device is electrically connected to the control system.

[0018] According to an internal welding reinforcement device for a U-rib of an orthotropic steel bridge deck provided by the present invention, a fixed support is installed on the inner side wall of the U-rib, and the first slide rail is installed on the fixed support.

[0019] According to the present invention, an internal welding reinforcement device for U-ribs of orthotropic steel bridge decks is provided, wherein the monitoring component includes a plurality of high-definition cameras, which are installed on the automatic welding equipment. The high-definition cameras face the inner weld of the U-rib, and the plurality of high-definition cameras are electrically connected to the control system.

[0020] According to the internal welding reinforcement device for U-ribs of orthotropic steel bridge decks provided by the present invention, the magnets are bar magnets.

[0021] According to the present invention, an internal welding reinforcement device for U-ribs of orthotropic steel bridge decks is provided, wherein the metal outer layer is a steel plate outer layer, and the steel plate outer layer and the ceramic inner layer are bonded by a high-temperature adhesive.

[0022] The present invention also provides an internal welding reinforcement method for U-ribs of orthotropic steel bridge decks, comprising the following steps:

[0023] Step 1: Place the automatic welding equipment inside the U rib;

[0024] Step 2: Arrange a movable pad at the inner weld position of the U-rib, slide the movable pad along the first slide rail, and connect the movable pad to the automatic welding equipment through a connecting rod;

[0025] Step 3: Arrange an outer magnetic attraction mechanism on the outer side of the U-rib;

[0026] Step 4: Perform overhead welding on the inner side of the U rib;

[0027] Step 5: Clean and inspect the inside of the U-rib after welding.

[0028] According to the internal welding reinforcement method for U-ribs of orthotropic steel bridge decks provided by the present invention, the process of step 4 is as follows:

[0029] Check the spatial position of the welding gun of the automatic welding equipment and adjust the welding gun angle and the distance between the welding gun and the inner weld of the U-rib in real time through the control system;

[0030] During overhead welding, the movable pad moves forward synchronously with the automatic welding equipment, and the outer magnetic suction mechanism moves synchronously with the movable pad until it is welded to the other end of the U rib.

[0031] According to a method for internal welding reinforcement of U-ribs of orthotropic steel bridge decks provided by the present invention, the process of step five is as follows: after the inner weld of the overhead weld cools down, the outer magnetic suction mechanism, the movable pad and the automatic welding equipment are removed in sequence, the welding slag inside the U-rib is cleaned, and the inner weld is inspected to ensure that the inner weld surface meets the inspection requirements.

[0032] The present invention discloses the following technical effects:

[0033] During the welding process, the movable pad slides along with the movement of the automatic welding equipment, always providing appropriate support for the weld; the outer magnetic attraction mechanism moves along with the movement of the movable pad, ensuring that it is continuously in a magnetic attraction state with the movable pad and that the molten pool is dynamically formed, thereby effectively improving the efficiency and quality of overhead welding;

[0034] The present invention uses a movable pad to achieve one-time forming of the weld seam on the inner side of the U-rib, thereby shortening the welding time. During the welding process, the movable pad slides along the first slide rail and works in conjunction with the automatic welding equipment to ensure that the weld seam is well supported and protected throughout the welding process, thereby avoiding the tedious operation of multiple welding operations, greatly shortening the welding time, and significantly improving construction efficiency.

[0035] The present invention introduces a movable liner inside the U-rib and arranges an outer magnetic attraction mechanism on the outer side of the U-rib, and performs overhead welding on the inner side of the U-rib. The outer magnetic attraction mechanism moves according to the movement of the movable liner position, ensuring that it is continuously in a magnetic attraction state with the movable liner, ensuring that the top of the movable liner is in close contact with the steel bridge deck during overhead welding, and the bottom is in fit with the inner wall of the U-rib, providing stable support for the molten pool, preventing the molten pool from sagging, ensuring that the weld on the inner side of the U-rib can achieve uniform penetration and high-quality forming, effectively reducing the occurrence of defects such as incomplete penetration and weld cracks, effectively improving the efficiency and quality of overhead welding, and providing a strong guarantee for the safety and durability of orthotropic steel bridge decks. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 It is a structural schematic diagram of the present invention;

[0038] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0039] Figure 3 It is the front view of the present invention;

[0040] Figure 4 It is a structural schematic diagram of the movable pad in the present invention;

[0041] Figure 5 Schematic diagram of overhead welding performed inside a U-rib by the device of the present invention;

[0042] Figure 6 Schematic diagram of the installation of the second slide rail and the magnet in the present invention;

[0043] Figure 7 It is a structural schematic diagram of the steel bridge deck and U-rib in the present invention.

[0044] Among them, 1. automatic welding equipment; 2. welding gun; 3. inner weld; 4. first slide rail; 5. movable liner; 51. ceramic inner layer; 52. metal outer layer; 6. steel bridge deck; 7. U rib; 8. second slide rail; 9. magnet; 10. fixed support; 11. outer weld. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Reference Figure 1-Figure 7 The present invention provides an internal welding reinforcement device for U-ribs of orthotropic steel bridge decks, comprising:

[0048] Automatic welding equipment 1, the automatic welding equipment 1 is equipped with a welding gun 2 and a monitoring component; the monitoring component is used to monitor the position of the inner side weld 3 of the U rib 7;

[0049] The first slide rail 4 is installed at the inner weld 3 of the U rib 7 along the welding direction;

[0050] The movable pad 5 is slidably connected to the first slide rail 4, the top of the movable pad 5 contacts the steel bridge deck 6, and the bottom contacts the inner wall of the U rib 7; the movable pad 5 is connected to the automatic welding equipment 1 through the connecting rod; the geometric parameters of the movable pad 5 are determined according to the size of the inner weld 3 of the U rib 7 to ensure that the movable pad 5 can be closely attached to the entire molten pool during the welding process, and the upper and lower surfaces of the movable pad 5 are closely attached to the steel bridge deck 6 and the U rib 7 respectively.

[0051] The outer magnetic attraction mechanism is slidably connected to the outer wall of the U-rib 7 along the welding direction; the outer magnetic attraction mechanism is located at the outer weld 11 of the U-rib 7;

[0052] The control system, the automatic welding device 1, the welding gun 2, the monitoring component and the outer magnetic attraction mechanism are all electrically connected to the control system; in this embodiment, the control system adopts a wireless control system; the forward speed of the automatic welding device 1, the forward speed of the connecting rod, and the welding speed of the welding gun 2 are controlled by the wireless control system;

[0053] With such a configuration, during the welding process of the present invention, the movable pad 5 slides along with the movement of the automatic welding equipment 1, always providing appropriate support for the weld; the outer magnetic attraction mechanism moves along with the movement of the movable pad, ensuring that it is continuously in a magnetic attraction state with the movable pad, ensuring that the molten pool is dynamically formed, thereby effectively improving the efficiency and quality of overhead welding;

[0054] The present invention adopts the movable pad 5 to realize the one-time forming of the weld 3 on the inner side of the U-rib 7, thereby shortening the welding time. During the welding process, the movable pad 5 slides along the first slide rail 4 and works in conjunction with the automatic welding equipment 1 to ensure that the weld can be well supported and protected throughout the welding process, thereby avoiding the tedious operation of multiple welding operations, greatly shortening the welding time, and significantly improving the construction efficiency.

[0055] The present invention introduces a movable pad 5 inside the U rib 7 and arranges an outer magnetic attraction mechanism on the outer side of the U rib 7, and performs overhead welding on the inner side of the U rib 7. The outer magnetic attraction mechanism moves according to the movement of the position of the movable pad 5, ensuring that it is continuously in a magnetic attraction state with the movable pad 5, ensuring that the top of the movable pad 5 is in close contact with the steel bridge deck 6 during overhead welding, and the bottom is in contact with the inner wall of the U rib 7, providing stable support for the molten pool, preventing the molten pool from sagging, ensuring that the weld on the inner side of the U rib 7 can achieve uniform penetration and high-quality forming, effectively reducing the occurrence of defects such as incomplete penetration and weld cracks, effectively improving the efficiency and quality of overhead welding, and providing a strong guarantee for the safety and durability of the orthotropic steel bridge deck 6.

[0056] According to a further optimized solution, the movable liner 5 includes a ceramic inner layer 51 and a metal outer layer 52 , the ceramic inner layer 51 and the metal outer layer 52 are fixedly connected, and the ceramic inner layer 51 is arranged close to the inner side weld 3 of the U-rib 7 ;

[0057] The ceramic inner layer 51 has good high temperature resistance and chemical stability, and can maintain structural integrity in a high temperature welding environment. At the same time, it provides stable support for the molten pool, prevents the molten pool from sagging, and ensures that the back of the weld is well formed; the metal outer layer 52 is a steel plate outer layer, which has high strength and rigidity and can withstand the pressure and friction during the welding process. It also enhances the overall stability of the movable pad 5 by bonding with the ceramic inner layer 51.

[0058] To further optimize the solution, the outer magnetic attraction mechanism includes:

[0059] The second slide rail 8 is fixedly mounted on the outer side wall of the U rib 7 along the welding direction;

[0060] Magnet 9, the magnet 9 is slidably connected to the second slide rail 8; the top of the magnet 9 is in contact with the steel bridge deck 6;

[0061] A driving device is installed on the outer side wall of the U-rib 7; the driving device is used to drive the magnet 9 to slide along the second slide rail 8;

[0062] The driving device is electrically connected to the control system. In this embodiment, the driving device adopts an electric push rod, which adopts a motor as a power source to drive the magnet 9 to slide along the second slide rail 8.

[0063] The second slide rail 8 is fixedly installed on the outer wall of the U rib 7 along the welding direction, providing a track for the sliding of the magnet 9; the magnet is a bar magnet, the top of which is in contact with the steel bridge deck 6, which can generate stable magnetic force to attract the movable pad 5 of the inner weld, thereby assisting in controlling the shape and position of the molten pool during welding and preventing the molten pool from sagging due to gravity; during the welding process, the driving device drives the magnet 9 to slide along the second slide rail 8 according to the instructions of the control system, so that it always moves synchronously with the movable pad 5, ensuring that appropriate magnetic assistance can be provided to the molten pool at any position of welding to ensure the quality of the weld.

[0064] In a further optimized solution, a fixed support 10 is installed on the inner side wall of the U rib 7, and the first slide rail 4 is installed on the fixed support 10;

[0065] During the welding process, the movable pad 5 is connected to the automatic welding equipment 1 through a connecting rod, and slides synchronously with the movement of the automatic welding equipment 1 along the welding direction, always providing support for the weld and ensuring that the weld is well protected throughout the welding process.

[0066] Further optimizing the solution, the monitoring assembly includes a plurality of high-definition cameras, which are installed on the automatic welding equipment 1, the high-definition cameras face the inner weld 3 of the U-rib 7, and the high-definition cameras are electrically connected to the control system;

[0067] The high-definition camera can collect image information of the weld in real time and transmit it to the control system. The control system analyzes and processes the image information to monitor the position, shape and quality of the weld in real time, promptly detect problems that arise during the welding process, and adjust parameters such as the angle and distance of the welding gun 2 to ensure welding quality.

[0068] In a further optimized solution, the magnet 9 is a bar magnet.

[0069] According to a further optimized solution, the metal outer layer 52 is a steel plate outer layer, and the steel plate outer layer and the ceramic inner layer 51 are bonded by a high-temperature adhesive.

[0070] The present invention also provides an internal welding reinforcement method for U-ribs of orthotropic steel bridge decks, comprising the following steps:

[0071] Step 1: Place the automatic welding device 1 inside the U-rib 7;

[0072] Step 2: Arrange the movable pad 5 at the position of the inner weld 3 of the U-rib 7, slide the movable pad 5 along the first slide rail 4, and connect the movable pad 5 to the automatic welding equipment 1 through the connecting rod;

[0073] Step 3: Arrange an outer magnetic attraction mechanism on the outer side of the U-rib 7;

[0074] Step 4: Perform overhead welding on the inner side of the U-rib 7;

[0075] Step 5: Clean and inspect the inside of the U-rib 7 after welding.

[0076] To further optimize the solution, the process of step 4 is as follows:

[0077] Check the spatial position of the welding gun 2 of the automatic welding equipment 1, and adjust the angle of the welding gun 2 and the distance between the welding gun 2 and the inner weld 3 of the U-rib 7 in real time through the control system;

[0078] During overhead welding, the movable pad 5 moves forward synchronously with the automatic welding equipment 1 , and the outer magnetic attraction mechanism moves synchronously with the movable pad 5 until it is welded to the other end of the U-rib 7 .

[0079] To further optimize the solution, the process of step five is: after the inner weld 3 of the overhead weld has cooled, the outer magnetic suction mechanism, the movable pad 5 and the automatic welding equipment 1 are removed in sequence, the welding slag inside the U-rib 7 is cleaned, and the inner weld 3 is inspected to ensure that the surface of the inner weld 3 meets the inspection requirements and that the surface of the inner weld 3 is flat and has no obvious defects.

[0080] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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, and therefore cannot be understood as a limitation on the present invention.

[0081] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An internal welding reinforcement device for U-ribs of orthotropic steel bridge decks, characterized in that: include: Automatic welding equipment (1), the automatic welding equipment (1) being equipped with a welding gun (2) and a monitoring component; the monitoring component being used to monitor the position of the inner weld seam (3) of the U-rib (7); A first slide rail (4), the first slide rail (4) being installed at the inner weld seam (3) of the U rib (7) along a welding direction; A movable pad (5), wherein the movable pad (5) is slidably connected to the first slide rail (4), the top of the movable pad (5) contacts the steel bridge deck (6), and the bottom contacts the inner side wall of the U rib (7); the movable pad (5) is connected to the automatic welding device (1) via a connecting rod; An outer magnetic attraction mechanism, the outer magnetic attraction mechanism is slidably connected to the outer wall of the U rib (7) along the welding direction; the outer magnetic attraction mechanism is located at the outer weld (11) of the U rib (7); the outer magnetic attraction mechanism includes a second slide rail (8), the second slide rail (8) is fixedly installed on the outer wall of the U rib (7) along the welding direction; a magnet (9), the magnet (9) is slidably connected to the second slide rail (8); the top of the magnet (9) is in contact with the steel bridge deck (6); a driving device, the driving device is installed on the outer wall of the U rib (7); the driving device is used to drive the magnet (9) to slide along the second slide rail (8); A control system, wherein the automatic welding equipment (1), the welding gun (2), the monitoring component and the outer magnetic attraction mechanism are all electrically connected to the control system, wherein the driving device is electrically connected to the control system.

2. The internal welding reinforcement device for U-ribs of orthotropic steel bridge decks according to claim 1 is characterized in that: The movable liner (5) comprises a ceramic inner layer (51) and a metal outer layer (52), wherein the ceramic inner layer (51) and the metal outer layer (52) are fixedly connected, and the ceramic inner layer (51) is arranged close to the inner weld (3) of the U-rib (7).

3. The internal welding reinforcement device for U-ribs of orthotropic steel bridge decks according to claim 1 is characterized in that: A fixed support (10) is installed on the inner side wall of the U-rib (7), and the first slide rail (4) is installed on the fixed support (10).

4. The internal welding reinforcement device for U-ribs of orthotropic steel bridge decks according to claim 1 is characterized in that: The monitoring assembly includes a plurality of high-definition cameras, which are mounted on the automatic welding equipment (1), the high-definition cameras facing the inner weld seam (3) of the U-rib (7), and the high-definition cameras are electrically connected to the control system.

5. The internal welding reinforcement device for U-ribs of orthotropic steel bridge decks according to claim 1 is characterized in that: The magnet (9) is a bar magnet.

6. The internal welding reinforcement device for U-ribs of orthotropic steel bridge decks according to claim 2, characterized in that: The metal outer layer (52) is a steel plate outer layer, and the steel plate outer layer and the ceramic inner layer (51) are bonded together by a high-temperature adhesive.

7. A method for internal welding reinforcement of U-ribs of orthotropic steel bridge decks, based on the internal welding reinforcement device for U-ribs of orthotropic steel bridge decks according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Place the automatic welding device (1) inside the U-rib (7); Step 2: Arrange a movable pad (5) at the position of the inner weld seam (3) of the U-rib (7), slide the movable pad (5) along the first slide rail (4), and connect the movable pad (5) to the automatic welding equipment (1) via a connecting rod; Step 3: Arrange an outer magnetic attraction mechanism on the outer side of the U rib (7); Step 4: Perform overhead welding on the inner side of the U rib (7); Step 5: Clean and inspect the inside of the U-rib (7) after welding.

8. The internal welding reinforcement method for U-ribs of orthotropic steel bridge decks according to claim 7, characterized in that: The process of step 4 is as follows: Checking the spatial position of a welding gun (2) of an automatic welding device (1), and adjusting the angle of the welding gun (2) and the distance between the welding gun (2) and the inner weld seam (3) of the U-rib (7) in real time through a control system; During the overhead welding process, the movable pad (5) moves forward synchronously with the automatic welding equipment (1), and the outer magnetic attraction mechanism moves synchronously with the movable pad (5) until it is welded to the other end of the U rib (7).

9. The internal welding reinforcement method for U-ribs of orthotropic steel bridge decks according to claim 7, characterized in that: The process of step five is as follows: after the inner weld seam (3) of the overhead welding is cooled, the outer magnetic attraction mechanism, the movable pad (5) and the automatic welding equipment (1) are removed in sequence, the welding slag inside the U rib (7) is cleaned, and the inner weld seam (3) is inspected to ensure that the surface of the inner weld seam (3) meets the inspection requirements.

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