A welding device capable of realizing welding deformation control of bridge plate units

Abstract

This invention relates to the technical field of bridge deck welding, and in particular to a welding device capable of controlling the welding deformation of bridge deck units. The device includes a hydraulic station and a gantry welding machine. A platform is located at the lower end of the gantry welding machine, and a support unit is located at the lower end of the platform. An adjustment unit is mounted on the support unit. A clamping unit and a deformation control unit are also mounted on the platform. A track is horizontally mounted on the platform. During welding, the hydraulic station drives an adjusting hydraulic cylinder to move a second slider, causing the support wheel to move accordingly. With the assistance of a temperature sensor, the device can quickly and accurately position the welding area and finely adjust the position of the support wheel to ensure the weld seam is always between the two wheels. Simultaneously, the deformation control hydraulic cylinder is activated, causing the support wheel to lift the bridge deck unit upwards. The pre-deformation of the bridge deck unit counteracts the thermal expansion and contraction deformation during subsequent cooling.

Description

Technical Field

[0001] This invention relates to the technical field of bridge deck welding, and in particular to a welding device that can control the welding deformation of bridge deck units. Background Technology

[0002] In bridge structures, U-ribs (U-shaped ribs) are widely used in steel bridges or composite bridge structures as key components that enhance the strength and stiffness of beams. The design of these U-shaped members not only improves the bending resistance of the beams but also provides local stability. However, during the welding process of U-ribs, the electric arc or other heat sources generate high temperatures, causing the metal to melt and resolidify locally. This temperature change causes the material to expand and contract, especially in the heat-affected zone. Due to uneven heating and different cooling rates, different parts of the material undergo varying degrees of deformation, resulting in localized deformation. Furthermore, during welding, the mutual constraints between the main parts of the bridge ribs limit their ability to expand or contract freely with temperature changes, leading to residual stress after welding, which in turn causes further localized deformation.

[0003] A bridge plate anti-deformation welding device with Chinese patent application number CN202510224619.9 is used for welding U-rib plates of bridges. The platform is rotatably set with the rotation axis along the horizontal direction. The platform has several protrusions, which are arc-shaped, with the middle part higher than the two ends. The protrusions are parallel to each other and spaced apart to support the U-rib plates. The pressure members are movable and arranged on both sides of the platform and located at both ends of the extension direction of the protrusions. After the pressure members move, they are used to press against the sides of the U-rib plates.

[0004] However, although the above equipment takes into account the deformation caused by thermal expansion and contraction at the weld, it only uses the arc shape at the top of the support plate to offset the deformation. Its applicability is limited. When the weld is not in the middle of the bridge plate unit, the arc shape at the top of the support plate cannot effectively offset the deformation. At the same time, after welding, the bridge plate unit needs to be naturally cooled for a long time to release the thermal stress at the weld, which leads to low welding efficiency of the bridge plate unit. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a welding device that can realize the control of welding deformation of bridge plate units.

[0006] The present invention provides a welding device for controlling the welding deformation of bridge plate units, comprising a hydraulic station and a gantry welding machine. The gantry welding machine has a platform at its lower end, a support unit at its lower end, an adjustment unit on the support unit, and a clamping unit and a deformation control unit on the platform. A track is horizontally arranged on the platform, and the clamping unit and the deformation control unit slide on the track. A support plate is also provided on the platform. The deformation control unit includes two support wheels. An auxiliary support is provided at the lower side of the middle of the two support wheels. A cooling water channel is provided inside the auxiliary support. A temperature sensor is provided on the support wheel.

[0007] Preferably, the support unit includes a support leg, a connecting seat is provided on the side end of the support leg, a mounting seat is rotatably provided on the upper end of the support leg, the mounting seat is provided at the lower end of the platform, an opening is provided at the lower middle end of the support leg, a placement frame is provided on the support leg inside the opening, and the hydraulic pipe of the hydraulic station is placed on the placement frame.

[0008] Preferably, multiple support legs are provided, and the multiple support legs are evenly distributed at the lower end of the platform, with a limiting seat provided on both sides of each support leg.

[0009] Preferably, the adjustment unit includes a supporting hydraulic cylinder, the bottom end of the supporting hydraulic cylinder is rotatably connected to the connecting seat, the output end of the supporting hydraulic cylinder is provided with a supporting rod, the lower end of the platform is provided with supporting seats on both sides, and the upper end of the supporting rod is rotatably connected to the supporting seat.

[0010] Preferably, the number of adjustment units matches the number of outriggers, and each adjustment unit has two supporting hydraulic cylinders arranged in an inverted V-shape. The supporting hydraulic cylinders, outriggers, and platform form a triangle.

[0011] Preferably, the clamping unit includes a first slider that slides on a track. A clamping hydraulic cylinder is provided on the first slider, and a clamping rod is provided at the output end of the clamping hydraulic cylinder. The platform has an installation slot at the track, and the track is located in the installation slot. The clamping rod passes through the installation slot, and the upper end of the clamping rod is bent. A bolt for limiting the position is provided on the first slider.

[0012] Preferably, the deformation control unit further includes a second slider that slides on a track. An adjusting hydraulic cylinder is provided at the middle of the lower end of the platform. The output end of the adjusting hydraulic cylinder is rotatably connected to the lower end of the second slider. A deformation control hydraulic cylinder is provided on the second slider. A mounting shell is provided at the output end of the deformation control hydraulic cylinder. A support wheel is rotatably located on the side end of the mounting shell. The upper end of the mounting shell is U-shaped. A drive cylinder is provided inside the U-shape of the mounting shell. An auxiliary support is provided at the output end of the drive cylinder. A storage component is provided on the side end of the mounting shell. The storage component is connected to the drive cylinder. A liquid that expands easily when heated is provided inside the storage component.

[0013] Preferably, the two first sliders are disposed outside the track, and the two second sliders are disposed near the middle of the track.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By incorporating components such as temperature sensors, adjusting hydraulic cylinders, clamping hydraulic cylinders, support wheels, auxiliary support parts, and deformation control hydraulic cylinders, the platform assists in adjusting the tilt angle of large bridge panel units during hoisting and welding. This allows the gantry welding machine to easily weld the joints. During welding, the hydraulic station drives the adjusting hydraulic cylinder to move the second slider, causing the support wheels to move accordingly. With the assistance of temperature sensors, the equipment can quickly and accurately position the welding area and fine-tune the support wheel position to ensure the weld seam remains between the two wheels. Simultaneously, the deformation control hydraulic cylinder activates, causing the support wheels to lift the bridge panel unit upwards. This pre-deformation of the bridge panel unit counteracts the thermal expansion and contraction during subsequent cooling. After the housing is moved upwards, the heat-expanding liquid inside the storage component expands due to heat, activating the drive cylinder. This causes the copper auxiliary support to press against the bottom of the bridge plate unit. The copper material and built-in cooling channels of the auxiliary support quickly cool the welded area. The upper part of the auxiliary support itself deforms slightly due to pressure to fit the bridge plate unit, ensuring even distribution of support force and increasing the heat exchange area, thus improving cooling efficiency. After welding, as the weld temperature decreases, the heat-expanding liquid contracts, and the support force of the auxiliary support on the bridge plate unit gradually decreases. At the same time, the hydraulic station controls the deformation control hydraulic cylinder to slowly release the top action of the support wheel, thereby avoiding stress concentration or local deformation caused by long-term bending of the bridge plate unit, ensuring the final plate surface is flat and stable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a structural schematic diagram of the clamping unit and platform components of the present invention; Figure 4 This is a top view of the platform of the present invention. Figure 5 This is a structural schematic diagram of the support legs and mounting base of the present invention; Figure 6 This is a structural schematic diagram of the support legs and connecting seats of the present invention from another perspective; Figure 7 This is a schematic diagram of the deformation control unit of the present invention; Figure 8 This is a schematic diagram of a modified bridge plate unit of the present invention.

[0016] Reference numerals: 1. Hydraulic station; 2. Platform; 3. Support unit; 4. Adjustment unit; 5. Clamping unit; 6. Deformation control unit; 7. Track; 8. Support plate; 9. Limiting seat; 301. Outrigger; 302. Connecting seat; 303. Mounting seat; 304. Opening; 305. Placement rack; 401. Support hydraulic cylinder; 402. Support rod; 403. Support base; 501. Clamping hydraulic cylinder; 502. Clamping rod; 601. Support wheel; 602. Auxiliary support component; 603. Cooling water channel; 604. Adjustment hydraulic cylinder; 605. Deformation control hydraulic cylinder; 606. Mounting shell; 607. Drive cylinder; 608. Storage component. Detailed Implementation

[0017] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0018] Example 1 like Figures 1 to 6 As shown, this invention discloses a welding device for controlling the welding deformation of bridge deck units, including a hydraulic station 1 and a gantry welding machine. A platform 2 is provided at the lower end of the gantry welding machine, and a support unit 3 is provided at the lower end of the platform 2. An adjustment unit 4 is provided on the support unit 3, and a clamping unit 5 is also provided on the platform 2. The gantry welding machine is used to weld long strip-shaped components on the bridge deck unit. The hydraulic station 1 can coordinate and control the entire equipment. The bridge deck unit can be placed on the platform 2, making it more stable during welding. The support unit 3 supports the platform 2, the adjustment unit 4 can adjust the tilt angle of the platform 2, making it easier for the bridge deck unit on the platform 2 to be welded by the gantry welding machine, and the clamping unit 5 can ensure that the bridge deck unit will not shift due to gravity when the tilt angle of the platform 2 changes, thus improving the stability of the equipment.

[0019] A track 7 is horizontally arranged on the platform 2, and the clamping unit 5 slides on the track 7. A support plate 8 is also provided on the platform 2, and the bridge plate unit is placed on the upper end of the support plate 8 to facilitate the welding of the bridge plate unit by the gantry welding machine. The support plate 8 also supports the bridge plate unit, so that there is a gap at the lower end of the bridge plate unit to facilitate heat dissipation after welding.

[0020] The support unit 3 includes a support leg 301, a connecting seat 302 is provided on the side of the support leg 301, and a mounting seat 303 is rotatably provided on the upper end of the support leg 301. The mounting seat 303 is located at the lower end of the platform 2. Multiple support legs 301 are provided, and the multiple support legs 301 are evenly distributed at the lower end of the platform 2. Each support leg 301 has a limit seat 9 on both sides. The multiple support legs 301 cooperate to support the platform 2. With the assistance of the mounting seat 303, the platform 2 can be tilted, so that the tilt angle of the upper bridge plate unit can be controlled, which is convenient for the gantry welding machine to weld it. When the platform 2 is tilted, the limit seat 9 is used to limit the platform 2 and ensure the stability of the platform 2 during use.

[0021] An opening 304 is provided at the lower middle end of the outrigger 301. A mounting frame 305 is provided on the outrigger 301 inside the opening 304. The hydraulic pipes of the hydraulic station 1 are placed on the mounting frame 305. When the platform 2 is tilted, the platform 2 will not affect the hydraulic pipes, ensuring that the hydraulic station 1 can stably control the entire equipment.

[0022] The adjustment unit 4 includes a support hydraulic cylinder 401. The bottom end of the support hydraulic cylinder 401 is rotatably connected to the connecting seat 302. A support rod 402 is provided at the output end of the support hydraulic cylinder 401. Support seats 403 are provided on both sides of the lower end of the platform 2. The upper end of the support rod 402 is rotatably connected to the support seat 403. The number of adjustment units 4 matches the number of outriggers 301. There are two support hydraulic cylinders 401 in one adjustment unit 4. The two support hydraulic cylinders 401 are arranged in an inverted V-shape. The support hydraulic cylinders 401, outriggers 301 and platform 2 form a triangle. The hydraulic station 1 controls the support hydraulic cylinders 401 with the assistance of hydraulic pipes. The support rod 402 of the support hydraulic cylinder 401 on one side of the lower end of the platform 2 extends and the support rod 402 of the support hydraulic cylinder 401 on the other side of the lower end of the platform 2 retracts, thereby completing the adjustment of the tilt angle of the platform 2. Through the unified control of the hydraulic station 1, hydraulic pipes and support hydraulic cylinders 401, the tilt angle of the platform 2 is conveniently and stably adjusted.

[0023] The clamping unit 5 includes a first slider that slides on the track 7. A clamping hydraulic cylinder 501 is mounted on the first slider, and a clamping rod 502 is mounted on the output end of the clamping hydraulic cylinder 501. The platform 2 has an installation slot on the track 7, and the track 7 is located within the installation slot. The clamping rod 502 passes through the installation slot and has a bent upper end. A limiting bolt is mounted on the first slider. Initially, the first slider is located at the outermost edge of the track 7. After the bridge plate unit is placed, the worker pushes the first slider to bring it closer to the bridge plate unit. After the first slider moves to the set position, the limiting bolt helps to fix the position of the first slider. Then, the clamping hydraulic cylinder 501 is activated by the control of the hydraulic station 1, causing the output end of the clamping hydraulic cylinder 501 to descend, which in turn causes the clamping rod 502 to descend. The bent upper end of the clamping rod 502 presses against the side of the bridge plate unit, thus completing the limiting work of the bridge plate unit and ensuring that the bridge plate unit will not shift when the platform 2 tilts.

[0024] The upper end of the support plate 8 is arc-shaped. When the bridge plate unit is placed on the upper end of the support plate 8, it will also deform due to the arc shape of the upper end of the support plate 8. During subsequent welding, the bent bridge plate unit will recover due to the thermal expansion and contraction effect at the welding part, which improves the welding effect of the equipment.

[0025] During use, the large bridge panel unit is hoisted by a crane to the upper end of the platform 2, and then placed on the upper end of the support plate 8.

[0026] After the bridge deck unit is placed, the worker pushes the first slider to bring it closer to the bridge deck unit. After the first slider moves to the set position, the position of the first slider is fixed with the help of the limiting bolt. Then, the clamping hydraulic cylinder 501 is activated by the control of the hydraulic station 1, causing the output end of the clamping hydraulic cylinder 501 to descend, which in turn causes the clamping rod 502 to descend. The upper end of the clamping rod 502 bends and presses on the side end of the bridge deck unit, thereby completing the limiting work of the bridge deck unit and ensuring that the bridge deck unit will not be displaced when the platform 2 tilts.

[0027] Subsequently, based on the welding positions of the components on the bridge deck unit, the hydraulic station 1 controls the supporting hydraulic cylinder 401 through the assistance of hydraulic pipes. The support rod 402 of the supporting hydraulic cylinder 401 on one side of the lower end of the platform 2 extends, and the support rod 402 of the supporting hydraulic cylinder 401 on the other side of the lower end of the platform 2 retracts, thereby completing the adjustment of the tilt angle of the platform 2, which facilitates the welding of the gantry welding machine. It should be noted that the components on the bridge deck unit are temporarily fixed by manual spot welding.

[0028] Then, the gantry welding machine operates to automatically weld the components on the bridge plate unit. After the welding of one side of the component and the bridge plate unit is completed, the tilt angle of platform 2 is adjusted again, and then the other side is welded, which improves the convenience of equipment use.

[0029] After welding, due to thermal expansion and contraction at the weld, the flat bridge plate unit will gradually bend. Therefore, the upper end of the support plate 8 is set to be arc-shaped. The deformation of the subsequent weld is offset by the pre-deformation in the opposite direction, so as to ensure that the bridge plate unit remains flat after welding.

[0030] Example 2 Based on the welding device of Embodiment 1 described above, which can control the welding deformation of bridge plate units, although it takes into account the deformation caused by thermal expansion and contraction at the weld during the welding process of bridge plate units, it only uses the arc shape at the upper end of the support plate 8 to offset the deformation. Its applicability is limited. When the weld is not in the middle of the bridge plate unit, the arc shape at the upper end of the support plate 8 cannot effectively offset the deformation. At the same time, after welding, the bridge plate unit needs to undergo a long period of natural cooling to release the thermal stress at the weld, which leads to low welding efficiency of the bridge plate unit. Therefore, the following technical solution is proposed: like Figures 1 to 8 As shown, a deformation control unit 6 is also provided on platform 2. The deformation control unit 6 is used to control the welding deformation of the bridge plate unit to ensure that the bridge plate unit remains flat after welding and cooling.

[0031] The deformation control unit 6 slides on the track 7, and its position can be adjusted to adapt to different welding positions of the bridge plate unit.

[0032] The deformation control unit 6 includes two support wheels 601, each equipped with a temperature sensor. The unit also includes a second slider that slides on the track 7. An adjusting hydraulic cylinder 604 is located at the lower center of the platform 2, its output end rotatably aligned with the lower end of the second slider. A deformation control hydraulic cylinder 605 is mounted on the second slider, its output end fitted with a mounting shell 606. The support wheels 601 are rotatably mounted on the side of the mounting shell 606. Activating the adjusting hydraulic cylinder 604 causes its output end to move the second slider. When activated, the deformation control hydraulic cylinder 605 moves, causing the support wheels 601 on the mounting housing 606 to move accordingly, positioning the weld between the two support wheels 601. Simultaneously, during welding, the temperature sensor on the support wheel 601 detects the temperature at the weld of the upper bridge plate unit, which in turn causes the adjusting hydraulic cylinder 604 to make fine adjustments, ensuring the weld is positioned between the two support wheels 601. After welding begins, the temperature sensor's temperature rises, which in turn activates the deformation control hydraulic cylinder 605, causing the support wheels 601 to approach the lower end of the bridge plate unit and lift it, thus deforming it and counteracting the deformation during the subsequent cooling process.

[0033] After the welding of both sides of the upper component of the bridge plate unit is completed, the position of the two support wheels 601 is finely adjusted by the detection of temperature sensors to ensure that the component is located between the two support wheels 601. At this time, the support wheels 601 lift the lower end of the bridge plate unit, which can accurately offset the subsequent thermal expansion and contraction deformation of the upper weld of the bridge plate unit, and ensure that the weld of the bridge plate unit remains flat after cooling.

[0034] An auxiliary support member 602 is provided at the lower side of the middle of the two support wheels 601. A cooling water channel 603 is provided inside the auxiliary support member 602. The upper end of the mounting shell 606 is U-shaped, and a drive cylinder 607 is provided inside the U-shape of the mounting shell 606. The auxiliary support member 602 is located at the output end of the drive cylinder 607. A storage component 608 is provided on the side of the mounting shell 606. The storage component 608 is connected to the drive cylinder 607. A liquid that expands easily when heated is provided inside the storage component 608. The liquid that expands easily when heated in the storage component 608 is heated. The subsequent volume expansion activates the drive cylinder 607. After activation, the auxiliary support 602 moves upward and rests against the bottom of the bridge plate unit. During this process, the bridge plate unit and the auxiliary support 602 are in direct contact, enabling better heat conduction. The water in the cooling channel 603 can quickly cool the auxiliary support 602, thereby achieving rapid cooling of the welded joint of the bridge plate unit. This protects the bridge plate unit while accelerating the cooling efficiency of the welded joint. The auxiliary support 602 is preferably made of copper.

[0035] Two first sliders are positioned outside the track 7, and two second sliders are positioned close to the center of the track 7. This ensures that the first and second sliders do not interfere with each other when they are in use, thus improving the stability of the equipment.

[0036] In the process of using this invention, large bridge deck units are hoisted by a crane to the upper end of platform 2. The bridge deck units are placed on the upper end of support plate 8. After the bridge deck units are placed, the worker pushes the first slider to bring it closer to the bridge deck units. After the first slider moves to the set position, the position of the first slider is fixed by the help of the limiting bolt. Then, the clamping hydraulic cylinder 501 is activated by the control of hydraulic station 1, causing the output end of the clamping hydraulic cylinder 501 to descend, which in turn causes the clamping rod 502 to descend. The upper end of the clamping rod 502 bends and presses on the side end of the bridge deck unit, thereby completing the limiting work of the bridge deck unit and ensuring that the bridge deck unit will not be displaced when the platform 2 tilts.

[0037] Subsequently, based on the welding positions of the components on the bridge deck unit, the hydraulic station 1 controls the supporting hydraulic cylinder 401 through the assistance of hydraulic pipes. The support rod 402 of the supporting hydraulic cylinder 401 on one side of the lower end of the platform 2 extends, and the support rod 402 of the supporting hydraulic cylinder 401 on the other side of the lower end of the platform 2 retracts, thereby completing the adjustment of the tilt angle of the platform 2, which facilitates the welding of the gantry welding machine. It should be noted that the components on the bridge deck unit are temporarily fixed by manual spot welding.

[0038] Then, the gantry welding machine operates to automatically weld the components on the bridge plate unit. After the welding of one side of the component and the bridge plate unit is completed, the tilt angle of platform 2 is adjusted again, and then the other side is welded, which improves the convenience of equipment use.

[0039] During the welding process, hydraulic station 1 controls the operation of hydraulic cylinder 604. The output end of hydraulic cylinder 604 drives the movement of the second slider. When the second slider moves, it drives the movement of deformation control hydraulic cylinder 605, which in turn causes the support wheel 601 on the mounting shell 606 to move, so that the weld is located between the two support wheels 601. During the welding process, the temperature sensor on the support wheel 601 can detect the temperature at the welding point of the upper bridge plate unit. Then, through the cooperation of the temperature sensors on the two support wheels 601, the position of the second slider is finely adjusted to ensure that the weld is located in the middle of the two support wheels 601. During the welding process, the temperature of the temperature sensor will rise, which will cause hydraulic station 1 to control the activation of deformation control hydraulic cylinder 605, so that the support wheel 601 is close to the lower end of the bridge plate unit and lifts it up, deforming it, and thus offsetting the deformation during the subsequent cooling process.

[0040] During the above process, after the welding of both sides of the upper component of the bridge plate unit is completed, the position of the two support wheels 601 is finely adjusted by the detection of temperature sensors to ensure that the component is located between the two support wheels 601. At this time, the support wheels 601 lift the lower end of the bridge plate unit, which can accurately offset the subsequent thermal expansion and contraction deformation of the upper weld of the bridge plate unit, and ensure that the weld of the bridge plate unit remains flat after cooling.

[0041] Simultaneously, during the aforementioned process, due to the upward movement of the mounting shell 606, the heat-expanding liquid inside the storage component 608 expands in volume upon heating, causing the drive cylinder 607 to be activated. After the drive cylinder 607 is activated, the auxiliary support 602 moves upward and abuts against the bottom of the bridge plate unit. During this process, the bridge plate unit and the auxiliary support 602 are in direct contact, enabling better heat conduction. Furthermore, the water in the cooling channel 603 can quickly cool the auxiliary support 602, thereby achieving rapid cooling of the welded joint of the bridge plate unit. This protects the bridge plate unit while accelerating the cooling efficiency of the welded joint. The auxiliary support 602 is preferably made of copper. When the auxiliary support 602 is attached to the bottom of the bridge plate unit, on the one hand, the characteristics of copper can protect the lower end of the bridge plate unit. On the other hand, the thermal conductivity of copper makes the auxiliary support 602 have a better cooling effect on the welded joint of the bridge plate unit. At the same time, during the lifting process of the welded joint of the bridge plate unit, the cooperation between the two support wheels 601 and the auxiliary support 602 increases the contact area with the bridge plate unit, avoids stress concentration during local lifting, protects the overall performance of the bridge plate unit, and improves the stability of equipment use.

[0042] Meanwhile, when the copper auxiliary support 602 lifts the bridge plate unit, the upper end of the auxiliary support 602 will also undergo slight deformation, making the upper end of the auxiliary support 602 fit more tightly with the bridge plate unit. This not only distributes the supporting force evenly but also effectively increases the contact area, improves the heat exchange area between the auxiliary support 602 and the bridge plate unit, and thus improves the cooling efficiency.

[0043] After welding, as the temperature at the welded joint of the bridge plate unit decreases, the volume of the heat-expanding liquid in the storage component 608 will gradually decrease, thereby reducing the supporting force of the auxiliary support component 602 on the bridge plate unit. Simultaneously, the hydraulic station 1 will also control the deformation control hydraulic cylinder 605 to operate accordingly, slowly releasing the support of the bridge plate unit, thus avoiding long-term bending of the bridge plate unit, which could lead to subsequent stress that is difficult to release, and reducing the occurrence of subsequent local deformation.

[0044] The main functions achieved by this invention are as follows: By setting up components such as a temperature sensor, adjusting hydraulic cylinder 604, clamping hydraulic cylinder 501, support wheel 601, auxiliary support component 602, and deformation control hydraulic cylinder 605, the platform 2 can be used to adjust the tilt angle of the bridge plate unit during the hoisting and welding of large bridge plate units, making it easier for the gantry welding machine to weld the joint. During welding, the hydraulic station 1 drives the adjusting hydraulic cylinder 604 to move the second slider, causing the support wheel 601 to move accordingly. With the assistance of the temperature sensor, the welding position can be quickly and accurately positioned, and the position of the support wheel 601 can be finely adjusted to ensure that the weld seam is always located between the two wheels. At the same time, the deformation control hydraulic cylinder 605 is activated, causing the support wheel 601 to lift the bridge plate unit upwards. The pre-deformation of the bridge plate unit offsets the thermal expansion during the subsequent cooling process. Due to cold shrinkage deformation, and after the mounting shell 606 moves upward, the heat-expanding liquid in the storage component 608 expands in volume due to heat, causing the drive cylinder 607 to start. This causes the copper auxiliary support 602 to press upward against the bottom of the bridge plate unit. Utilizing the copper material of the auxiliary support 602 and the built-in cooling water channel 603, the weld joint is quickly cooled. Furthermore, the upper end of the auxiliary support 602 undergoes slight deformation due to pressure to conform to the bridge plate unit, ensuring even distribution of support force and increasing the heat exchange area, thereby improving cooling efficiency. After welding is completed, as the weld temperature decreases, the heat-expanding liquid shrinks in volume, and the support force of the auxiliary support 602 on the bridge plate unit gradually decreases. At the same time, the hydraulic station 1 controls the deformation control hydraulic cylinder 605 to slowly release the top action of the support wheel 601, thereby avoiding stress concentration or local deformation caused by long-term bending of the bridge plate unit and ensuring the final plate surface is flat and stable.

[0045] The present invention provides a welding device for controlling the welding deformation of bridge plate units. Its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effect can be implemented.

[0046] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A welding device for controlling the welding deformation of bridge deck units, comprising a hydraulic station (1) and a gantry welding machine, characterized in that, The gantry welding machine is provided with a platform (2) at the lower end, a support unit (3) is provided at the lower end of the platform (2), an adjustment unit (4) is provided on the support unit (3), and a clamping unit (5) and a deformation control unit (6) are also provided on the platform (2). The platform (2) is provided with a track (7) arranged horizontally, the clamping unit (5) and the deformation control unit (6) slide on the track (7), and the platform (2) is also provided with a support plate (8). The deformation control unit (6) includes a support wheel (601), and there are two support wheels (601). An auxiliary support member (602) is provided at the lower side of the middle of the two support wheels (601). A cooling water channel (603) is provided in the auxiliary support member (602). A temperature sensor is provided on the support wheel (601).

2. The welding device for controlling the welding deformation of bridge deck units as described in claim 1, characterized in that, The support unit (3) includes a support leg (301), a connecting seat (302) is provided on the side end of the support leg (301), a mounting seat (303) is rotatably provided on the upper end of the support leg (301), the mounting seat (303) is provided at the lower end of the platform (2), an opening (304) is provided at the lower middle end of the support leg (301), a placement frame (305) is provided on the support leg (301) inside the opening (304), and the hydraulic pipe of the hydraulic station (1) is placed on the placement frame (305).

3. The welding device for controlling the welding deformation of bridge deck units as described in claim 2, characterized in that, Multiple support legs (301) are provided, and the multiple support legs (301) are evenly distributed at the lower end of the platform (2). Each support leg (301) has a limit seat (9) on both sides.

4. The welding device for controlling the welding deformation of bridge deck units as described in claim 2, characterized in that, The adjustment unit (4) includes a support hydraulic cylinder (401), the bottom end of the support hydraulic cylinder (401) is rotatably connected to the connecting seat (302), the output end of the support hydraulic cylinder (401) is provided with a support rod (402), the lower end of the platform (2) is provided with support seats (403) on both sides, and the upper end of the support rod (402) is rotatably connected to the support seat (403).

5. The welding device for controlling the welding deformation of bridge deck units as described in claim 4, characterized in that, The number of adjustment units (4) matches the number of outriggers (301). Each adjustment unit (4) has two supporting hydraulic cylinders (401). The two supporting hydraulic cylinders (401) are arranged in an inverted V-shape. The supporting hydraulic cylinders (401), outriggers (301) and platform (2) form a triangle.

6. The welding device for controlling the welding deformation of bridge deck units as described in claim 1, characterized in that, The clamping unit (5) includes a first slider that slides on a track (7). A clamping hydraulic cylinder (501) is provided on the first slider. A clamping rod (502) is provided at the output end of the clamping hydraulic cylinder (501). The platform (2) has an installation slot at the track (7). The track (7) is located in the installation slot. The clamping rod (502) passes through the installation slot. The upper end of the clamping rod (502) is bent. A bolt for limiting the position is provided on the first slider.

7. The welding device for controlling the welding deformation of bridge deck units as described in claim 6, characterized in that, The deformation control unit (6) further includes a second slider that slides on the track (7). An adjusting hydraulic cylinder (604) is provided at the middle of the lower end of the platform (2). The output end of the adjusting hydraulic cylinder (604) is rotatably connected to the lower end of the second slider. A deformation control hydraulic cylinder (605) is provided on the second slider. An installation shell (606) is provided at the output end of the deformation control hydraulic cylinder (605). A support wheel (601) is rotatably connected to the side of the installation shell (606). The upper end of the installation shell (606) is U-shaped. A drive cylinder (607) is provided inside the U-shape of the installation shell (606). An auxiliary support (602) is provided at the output end of the drive cylinder (607). A storage component (608) is provided at the side of the installation shell (606). The storage component (608) is connected to the drive cylinder (607). A liquid that expands easily when heated is provided inside the storage component (608).

8. The welding device for controlling the welding deformation of bridge deck units as described in claim 7, characterized in that, The two first sliders are located outside the track (7), and the two second sliders are located near the middle of the track (7).

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