Welding device for temporary consolidation of cantilever continuous beam and welding method thereof

Abstract

The invention relates to the technical field of steel bar and steel pipe welding, in particular to a welding device for temporary consolidation of a cantilever continuous beam and a welding method of the welding device. One end of a connecting frame is fixedly connected with a supporting plate, a lifting ring is arranged on the supporting plate, and the inner side of the supporting plate is rotationally connected with a semi-sphere which is hollow; a counterweight ring used for counterweight is arranged on the inner side of the bottom end of the semi-sphere, the counterweight ring can be a continuously distributed storage battery, the counterweight ring is used for supplying power while counterweight, and in a static state, the semi-sphere can be automatically leveled under the action of gravity. Firstly, the top end of the semi-sphere is leveled through the automatic leveling effect of the semi-sphere, after the top end of the semi-sphere is leveled, the welding perpendicularity of a follow-up steel pipe can be greatly guaranteed, after the steel pipe is clamped by the clamping assembly, perpendicularity inspection of the fixed steel pipe can be achieved through the measuring assembly, and the detection accuracy is improved. And the welding perpendicularity of the steel pipes and steel bars is further ensured.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar and steel pipe welding, in particular to a welding device and a welding method for temporary consolidation of a cantilever continuous beam. Background Art

[0002] When a prestressed concrete continuous beam bridge adopts the cantilever casting construction method, it is necessary to carry out several system conversions during the construction, including pier top connection, side span closure, middle span closure, and removal of pier top connection, and finally complete the system replacement to form a continuous beam bridge. Regarding the conversion of pier-beam connection methods, temporary measures for pier-beam consolidation are usually required during cantilever casting. The stress state of the structure is a T-shaped rigid frame cantilever beam to balance the moment generated by the unbalanced load of cantilever construction. After the main beam is closed, the temporary consolidation of the pier top is removed to support the main beam on the support to form a continuous beam. There are 6 forms of temporary consolidation for cantilevered continuous beams: 1. Consolidation of pier beams consisting of pre-embedded steel bars on the pier top and temporary consolidation pads made of sulfur mortar; 2. Consolidation of pier beams consisting of pre-embedded steel bars on the pier top and sand mortar; 3. Consolidation of pier beams consisting of steel tube concrete columns and pre-embedded steel bars in concrete columns; 4. Consolidation of pier beams composed of vertical prestressed steel bars and steel tubes; 5. Concrete piers are used to connect the piers and beams; 6. Temporary piers are set on the outside of the main pier to support and consolidate them into a whole with the pier.

[0003] The specific approach of the third method is: Figure 1 As shown, two steel pipes 3 meeting the strength and stiffness requirements are arranged on both sides of the center line of the pier body, the lower end of each steel pipe 3 is welded to the embedded steel bar 2 of the pedestal 1, concrete is poured in the steel pipe 3, and the embedded steel bar at the upper end of the steel pipe 3 is connected to the beam body. This has many advantages, such as being suitable for longer 0# blocks, simplifying the erection of 0# block brackets, being able to withstand unbalanced loads, and being easy to dismantle.

[0004] During the welding process, because the steel pipe needs to play a supporting role, the verticality of the steel pipe during welding needs to be ensured, and the steel pipe is distributed in the vertical direction for a long time. In the existing welding process, it is easy to have the imagination that the verticality does not meet the standard, which affects the supporting effect. Therefore, in view of the above problems, a welding device and a welding method for temporary consolidation of cantilever continuous beams are proposed, which can greatly ensure the verticality of the welding during the welding process, and can use steel bars as convex points to eliminate welding stress, further reduce stress deformation, and ensure verticality. Summary of the invention

[0005] The purpose of the present invention is to provide a welding device and a welding method for temporary consolidation of a cantilever continuous beam, which can greatly ensure the verticality of the welding during the welding process, and can use steel bars as convex points to eliminate welding stress, further reduce stress deformation, and ensure verticality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding device for temporary consolidation of a cantilever continuous beam, comprising a connecting frame, one end of the connecting frame is fixedly connected to a support plate, a lifting ring is arranged on the support plate, a semi-circular ball is rotatably connected to the inner side of the support plate, the interior of the semi-circular ball is hollow, a counterweight ring for counterweight is arranged on the inner side of the bottom end of the semi-circular ball, the counterweight ring can be selected as a continuously distributed storage battery, and is used for power supply while counterweighting, in a static state, the semi-circular ball can be automatically leveled under the action of gravity, so that the top surface of the semi-circular ball is in a horizontal state, a hydraulic rod is fixedly connected to the inner side of the support plate, and the movable end of the hydraulic rod is fixedly connected to a first top plate, the surface of the first top plate is arranged with a rubber layer, and after the semi-circular ball is leveled, the first top plate can support the semi-circular ball and fix the semi-circular ball; A clamping assembly is arranged inside the hemispherical ball, and the clamping assembly includes a driving box, and the steel pipe placed inside the hemispherical ball can be clamped by the clamping assembly; A measuring assembly is provided at the top of the hemisphere, and the measuring assembly includes a rotating ring rotating inside the top of the hemisphere, and the verticality inspection of the steel pipe after being fixed is realized through the measuring assembly; A welding stress reduction component is fixedly connected to the bottom end of the hemisphere, and the welding stress reduction component includes an electric push rod fixedly connected to the bottom end of the hemisphere. A knocking block is slidably provided at the bottom end of the electric push rod. The knocking block can rotate counterclockwise and is arranged in a right-angle trapezoid shape. After the knocking block slides over the steel bar, it can quickly knock on the welding surface of the steel pipe, thereby eliminating stress.

[0007] The present invention can greatly ensure the verticality of welding during the welding process. First, the top of the semi-circular sphere is leveled through the automatic leveling effect of the semi-circular sphere. After the top of the semi-circular sphere is leveled, the verticality of subsequent welding of the steel pipe can be greatly guaranteed. After the clamping assembly completes the clamping of the steel pipe, the present invention can also realize the verticality inspection of the steel pipe after being fixed through the measuring assembly, thereby further ensuring the verticality of the steel pipe and steel bar welding. As a preferred welding device for temporary consolidation of cantilever continuous beams of the present invention, a slide plate is slidably connected to the inner side of the drive box, one end of the slide plate is fixedly connected to two limit rods, the limit rod passes through the inner side of the drive box and is fixedly connected to a second top plate, the clamping surface of the second top plate is also fixedly connected to a rubber pad for increasing or decreasing friction and preventing local deformation at the clamping point of the steel pipe, the inner side of the drive box is rotatably connected to a screw rod, the outer side of the screw rod is spirally connected to the inner side of the slide plate, the second top plate is pushed toward the clamping surface by rotation of the screw rod, the inner side of the drive box is fixedly connected to a high-torque motor, and the end of the main shaft of the high-torque motor is fixedly connected to the screw rod.

[0008] The working mode of the clamping assembly is as follows: the high-torque motor rotates to drive the screw to rotate, and the rotation of the screw drives the slide plate to move left and right. The slide plate drives the second top plate to synchronously press the surface of the steel pipe through the limit rod, thereby fixing the steel pipe and maintaining verticality; As a preferred welding device for temporary consolidation of a cantilever continuous beam of the present invention, both sides of the top of the rotating ring are fixedly connected with support rods, and the top of each support rod is fixedly connected with a top block, two symmetrical top blocks form a pair, and one or two pairs of top blocks are provided on the rotating ring; The two top blocks of each pair are connected by a pull rope, which is in a state of pulling and retracting. Each pair of top blocks can rotate around the steel pipe. After one rotation, the verticality of the steel pipe can be detected by obtaining the maximum difference between the retraction amount and the pulling amount of the pull rope.

[0009] As a preferred welding device for temporary consolidation of cantilever continuous beams of the present invention, when a pair of top blocks are provided on the swivel, the line connecting the two top blocks is on the diameter of the swivel; when two pairs of top blocks are provided on the swivel, the line connecting each pair of top blocks is close to the diameter of the swivel.

[0010] As a preferred welding device for temporary consolidation of cantilever continuous beams of the present invention, one of the top blocks of each pair is fixedly connected to a fixed shaft, the top outer side of the fixed shaft is rotatably connected to a winding shaft, a spring is fixedly connected between the outer side of the fixed shaft and the inner side of the winding shaft, one end of the pull rope is fixed to the outer side of the winding shaft, the pull rope is wound around the outer side of the winding shaft, and the other end of the pull rope passes through the inner side of the top block and is fixedly connected to the surface of the other top block in the pair.

[0011] As a welding device for temporary consolidation of cantilever continuous beams of the present invention, preferably, the top end of the winding shaft is fixedly connected to the input end of the rotation sensor through the shaft, and the rotation sensor is fixed on the inner side of the top block. When the pull rope is retracted or pulled, the winding shaft rotates accordingly, and the rotation sensor collects the number of rotations and direction and transmits them to the controller. The rotation sensor can be a rotation angle sensor, which can obtain the rotation angle and rotation direction of the winding shaft, thereby calculating the extension and contraction amount of the pull rope. It is a prior art and will not be elaborated here. As a preferred welding device for temporary consolidation of cantilever continuous beams of the present invention, a gear ring is fixedly connected to the inner side of the bottom end of the swivel, a second motor is fixedly connected to the top of the semicircular sphere, a second gear is fixedly connected to the top of the second motor, the second gear is meshed with the gear ring, and the rotation of the swivel and the top block is achieved by the rotation of the second motor.

[0012] After the steel pipe is fixed by the clamping assembly, the working mode of the detection assembly is that the second motor rotates, and after being transmitted through the second gear and the gear ring, the swivel rotates, and the swivel drives the top block on the support rod to rotate. After each pair of top blocks rotates one circle, if the steel pipe is tilted or not centered in the hemisphere, the pull rope will be pulled and retracted within one circle of rotation. It will be pulled in the tilted direction and retracted by the spring on the back side of the tilted direction, thereby obtaining the maximum difference between the retraction amount and the traction amount of the pull rope. The maximum traction position is the tilted direction. The larger the difference, the worse the verticality of the steel pipe, thereby realizing the detection of the verticality of the steel pipe. When the above situation occurs, it is considered that the rubber pad on the second top plate is worn or unevenly deformed, and the rubber pad needs to be reinstalled and the steel pipe needs to be refixed. In the verticality detection method of the present invention, during the detection process, a part of the draw rope will fit on the outer surface of the steel pipe. When the steel pipe is tilted, more draw ropes will fit on the outer surface of the steel pipe in the tilting direction, and less draw ropes will fit on the outer surface of the steel pipe in the reverse tilting direction. When the verticality detection is performed by this method, the extension and contraction of the draw rope will be larger, and the larger the diameter of the steel pipe, the more obvious it will be, thereby increasing the sensitivity of the detection; When there are two pairs of top blocks, limiting the length of the pull rope can also play a role in limiting the position of the steel pipe.

[0013] As a welding device for temporary consolidation of cantilever continuous beams of the present invention, preferably, there are two electric push rods, which are symmetrically fixed at the bottom end of the semicircular sphere, and the bottom ends of the movable ends of the two electric push rods are rotatably connected to the same circular ring, and the bottom end of the circular ring is fixedly connected to a connecting block, and the inner side of the connecting block is slidably connected to a sliding rod, and the side of the sliding rod close to the center of the circular ring is fixedly connected to the knocking block, and a spring is arranged on the outer side of the sliding rod, and the two ends of the spring are respectively fixedly connected to one end of the connecting block and one end of the knocking block.

[0014] As a welding device for temporary consolidation of cantilever continuous beams of the present invention, preferably, the outer surface of the ring is in the shape of a toothed ring, a first motor is fixedly connected to the lower side of the movable end of the electric push rod, a first gear is fixedly connected to the bottom end of the first motor, the outer side of the first gear is meshed with the outer surface of the ring, and the rotation of the ring is realized by the rotation of the first motor.

[0015] Under the above settings, when the welding stress reduction component is working, the knocking block is lowered to the welding position through the electric push rod, the first motor rotates, the ring is rotated through the first gear, and the knocking block rotates around the steel pipe. Under the action of the spring, the knocking block slides over the steel bar and can quickly knock the welding surface of the steel pipe. After welding is completed, the present invention uses the steel bar as a convex point to eliminate welding stress, further reduce stress deformation, and ensure verticality.

[0016] The welding device for temporary consolidation of cantilever continuous beams comprises the following steps: Step 1: The steel pipes in the storage place are placed in a vertical state through the limit frame, and the connecting frame and the forklift are connected and fixed through the connecting assembly. After the connection, the support plate is kept still, and the semi-circular ball is automatically leveled under the action of gravity, so that the top surface of the semi-circular ball is in a horizontal state, and the hydraulic rod is pushed to fix the horizontal state of the semi-circular ball; Step 2: Use a forklift to move and lift the support plate, put the semi-circular ball in the support plate outside the steel pipe, and clamp and fix the steel pipe through the clamping assembly. When the steel pipe to be used is too high, a lifting device is required to assist in the movement of the steel pipe, such as setting up a simple gantry. The lifting ring is used to assist in lifting. The clamping assembly can also be clamped by a hydraulic rod. The screw method is to reduce the setting of the oil circuit, save the counterweight link, and ensure that the top of the semi-circular ball is level when it is static. Step 3: Move the steel pipe to the welding position, and use the detection component to detect the verticality of the steel pipe again. After confirming that the verticality of the steel pipe meets the standard, the steel pipe and the steel bar are welded by gas shielded welding. When welding, welding is performed simultaneously in the symmetrical direction to offset the welding stress; If the verticality of the steel pipe does not meet the standard, it is considered that the rubber pad on the second top plate is worn or unevenly deformed, and it is necessary to reinstall the rubber pad and re-fix the steel pipe; Step 4: After each weld is completed, stress reduction is performed by welding stress reduction components to further reduce stress deformation and ensure verticality.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The welding device for temporary consolidation of cantilever continuous beams can greatly ensure the verticality of welding during the welding process. First, the top of the hemisphere is leveled by the automatic leveling effect of the hemisphere. After the top of the hemisphere is level, the verticality of subsequent welding of steel pipes can be greatly guaranteed. After the clamping assembly completes the clamping of the steel pipe, the present invention can also realize the verticality inspection of the steel pipe after being fixed by the measuring assembly, so as to further ensure the verticality of the steel pipe and steel bar welding.

[0018] 2. The welding device for temporary consolidation of cantilever continuous beams, after the steel pipe is fixed by the clamping assembly, the working mode of the detection assembly is that the second motor rotates, and after transmitting through the second gear and the gear ring, the swivel rotates, and the swivel drives the top block on the support rod to rotate. After each pair of top blocks rotates one circle, if the steel pipe is tilted or not centered in the hemisphere, the pull rope will be pulled and retracted within one circle of rotation, being pulled in the tilted direction and retracted on the back side of the tilted direction by the spring, thereby obtaining the maximum difference between the retraction amount and the traction amount of the pull rope, and the maximum traction position is the tilted direction. The larger the difference, the worse the verticality of the steel pipe, thereby realizing the detection of the verticality of the steel pipe. When the above situation occurs, it is considered that the rubber pad on the second top plate is worn or unevenly deformed, and the rubber pad needs to be reinstalled and the steel pipe needs to be refixed.

[0019] 3. The welding device for temporary consolidation of cantilever continuous beams in the present invention has a verticality detection method. During the detection process, a portion of the pull rope will fit on the outer surface of the steel pipe. When the steel pipe is inclined, more pull ropes will fit on the outer surface of the steel pipe in the inclined direction, and less pull ropes will fit on the outer surface of the steel pipe in the reverse inclined direction. When the verticality detection is performed in this way, the extension and contraction amount of the pull rope will be larger, thereby increasing the sensitivity of the detection.

[0020] 4. The welding device used for temporary consolidation of cantilever continuous beams can limit the length of the pull rope when there are two pairs of top blocks, and can also play a role in limiting the position of the steel pipe.

[0021] 5. In the welding device for temporary consolidation of cantilever continuous beams, when the welding stress reduction component is working, the knocking block is lowered to the welding position by the electric push rod, the first motor rotates, the circular ring is rotated by the first gear, and the knocking block rotates around the steel pipe. Under the action of the spring, the knocking block can quickly knock the welding surface of the steel pipe after sliding over the steel bar. After the welding is completed, the present invention uses the steel bar as a convex point to eliminate the welding stress, further reduce the stress deformation, and ensure the verticality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of welding positions when temporary consolidation is performed through a steel tube concrete column in the present invention; Figure 2 It is a schematic diagram of the overall appearance structure of the present invention; Figure 3 It is a schematic diagram of the overall cross-sectional installation structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure at A; Figure 5 For the present invention Figure 4 Schematic diagram of the structure at B; Figure 6It is a schematic diagram of the installation structure inside the clamping assembly of the present invention; Figure 7 It is a schematic diagram of a top cross-sectional structure of a pair of top blocks in the present invention; Figure 8 A schematic diagram of the internal structure of one of the top blocks of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the structure at C in FIG. Fig.10 This is a schematic diagram of the measuring assembly when the steel pipe of the present invention is not tilted; Fig.11 This is a schematic diagram of the measuring assembly when the steel pipe of the present invention is tilted; Fig.12 It is a schematic diagram of the structure of two pairs of top blocks of the present invention; Fig.13 It is a schematic structural diagram of the welding stress reduction assembly of the present invention when it is working.

[0023] In the figure: 1, bearing platform; 2, steel bar; 3, steel pipe; 4, connecting frame; 5, support plate; 6, semicircular ball; 7, lifting ring; 8, electric push rod; 9, support rod; 10, hydraulic rod; 11, first top plate; 12, drive box; 13, counterweight ring; 14, controller; 81. ring; 82. first motor; 83. first gear; 84. connecting block; 85. slide bar; 86. knocking block; 87. spring; 91. top block; 92. rotating ring; 93. gear ring; 94. second motor; 95. second gear; 96. pull rope; 97. fixed shaft; 98. spring; 99. winding shaft; 910. rotation sensor; 121. high-torque motor; 122. screw rod; 123. slide plate; 124. limit rod; 125. second top plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0025] Example 1, please refer to Figure 1-Figure 4 and Figure 6-Figure 12 , the present invention provides a technical solution: A welding device for temporary consolidation of a cantilever continuous beam comprises a connecting frame 4, one end of the connecting frame 4 is fixedly connected to a support plate 5, a lifting ring 7 is arranged on the support plate 5, a semi-circular ball 6 is rotatably connected to the inner side of the support plate 5, the interior of the semi-circular ball 6 is hollow, a counterweight ring 13 for counterweight is arranged on the inner side of the bottom end of the semi-circular ball 6, the counterweight ring 13 can be selected as a continuously distributed storage battery, and is used for power supply while counterweighting, in a static state, the semi-circular ball 6 can be automatically leveled under the action of gravity, so that the top surface of the semi-circular ball 6 is in a horizontal state, a hydraulic rod 10 is fixedly connected to the inner side of the support plate 5, and the movable end of the hydraulic rod 10 is fixedly connected to a first top plate 11, and a rubber layer is arranged on the surface of the first top plate 11, and after the semi-circular ball 6 is leveled, the first top plate 11 can support the semi-circular ball 6 and fix the semi-circular ball 6; A clamping assembly is provided inside the hemispherical ball 6, and the clamping assembly includes a driving box 12, through which the steel pipe 3 placed inside the hemispherical ball 6 can be clamped; A measuring assembly is provided at the top of the hemispherical sphere 6, and the measuring assembly includes a rotating ring 92 rotating inside the top of the hemispherical sphere 6, and the verticality inspection of the steel pipe 3 after being fixed is realized through the measuring assembly; The present invention can greatly ensure the verticality of welding during the welding process. First, the top of the semi-circular sphere 6 is leveled through the automatic leveling effect of the semi-circular sphere 6. After the top of the semi-circular sphere 6 is leveled, the verticality of the subsequent welding of the steel pipe 3 can be greatly guaranteed. After the clamping assembly completes the clamping of the steel pipe 3, the present invention can also realize the verticality inspection of the steel pipe 3 after being fixed through the measuring assembly, and further ensure the verticality of the steel pipe and steel bar welding; Specifically, a slide plate 123 is slidably connected to the inner side of the drive box 12, and one end of the slide plate 123 is fixedly connected to two limit rods 124. The limit rod 124 passes through the inner side of the drive box 12 and is fixedly connected to a second top plate 125. The clamping surface of the second top plate 125 is also fixedly connected to a rubber pad for increasing or decreasing friction and preventing local deformation of the clamping part of the steel pipe 3. The inner side of the drive box 12 is rotatably connected to a screw rod 122, and the outer side of the screw rod 122 is spirally connected to the inner side of the slide plate 123. The second top plate 125 is pushed toward the clamping surface through the rotation of the screw rod 122. A high-torque motor 121 is fixedly connected to the inner side of the drive box 12, and the end of the main shaft of the high-torque motor 121 is fixedly connected to the screw rod 122.

[0026] The working mode of the clamping assembly is as follows: the high-torque motor 121 rotates to drive the screw 122 to rotate, and the rotation of the screw 122 drives the slide plate 123 to move left and right, and the slide plate 123 drives the second top plate 125 to synchronously press the surface of the steel pipe 3 through the limit rod 124, thereby fixing the steel pipe 3 and maintaining it vertically; Specifically, both sides of the top of the rotating ring 92 are fixedly connected to support rods 9, and the top of each support rod 9 is fixedly connected to a top block 91, two symmetrical top blocks 91 form a pair, and a pair or two pairs of top blocks 91 are provided on the rotating ring 92; Each pair of two top blocks 91 is connected by a pull rope 96, and the pull rope 96 is in a state of being able to pull and retract. Each pair of top blocks 91 can rotate around the steel pipe 3. After one rotation, the verticality of the steel pipe 3 is detected by obtaining the maximum difference between the retraction amount and the pulling amount of the pull rope 96.

[0027] Specifically, when a pair of top blocks 91 are provided on the swivel 92 , the connection line of the two top blocks 91 is on the diameter of the swivel 92 ; when two pairs of top blocks 91 are provided on the swivel 92 , the connection line of each pair of top blocks 91 is close to the diameter of the swivel 92 .

[0028] Specifically, one of the top blocks 91 of each pair is fixedly connected to a fixed shaft 97, the top outer side of the fixed shaft 97 is rotatably connected to a winding shaft 99, a spring 98 is fixedly connected between the outer side of the fixed shaft 97 and the inner side of the winding shaft 99, one end of the pull rope 96 is fixed to the outer side of the winding shaft 99, the pull rope 96 is entangled on the outer side of the winding shaft 99, and the other end of the pull rope 96 passes through the inner side of the top block 91 and is fixedly connected to the surface of the other top block 91 in the pair.

[0029] Specifically, the top of the winding shaft 99 is fixedly connected to the input end of the rotation sensor 910 through the shaft, and the rotation sensor 910 is fixed on the inner side of the top block 91. When the pull rope 96 is retracted or pulled, the winding shaft 99 rotates accordingly, and the rotation sensor 910 collects the number of rotations and direction thereof and transmits them to the controller 14. The rotation sensor 910 may be a rotation angle sensor, which can obtain the rotation angle and rotation direction of the winding shaft 99, thereby calculating the extension and contraction amount of the pull rope 96. This is a prior art and will not be elaborated on here.

[0030] Specifically, a gear ring 93 is fixedly connected to the inner side of the bottom end of the rotating ring 92, a second motor 94 is fixedly connected to the top of the semicircular ball 6, a second gear 95 is fixedly connected to the top of the second motor 94, and the second gear 95 is meshed with the gear ring 93. The rotation of the rotating ring 92 and the top block 91 is achieved by the rotation of the second motor 94.

[0031] After the steel pipe 3 is fixed by the clamping assembly, the working mode of the detection assembly is that the second motor 94 rotates, and after being transmitted through the second gear 95 and the gear ring 93, the swivel 92 rotates, and the swivel 92 drives the top block 91 on the support rod 9 to rotate. After each pair of top blocks 91 rotates one circle, if the steel pipe 3 is tilted or not centered in the hemispherical ball 6, the pull rope 96 will be pulled and retracted within one circle of rotation, and will be pulled in the tilting direction, and retracted on the back side of the tilting direction by the spring 98, so as to obtain the maximum difference between the retraction amount and the pulling amount of the pull rope 96, and the maximum pulling amount position is the tilting direction. The larger the difference, the worse the verticality of the steel pipe 3, thereby realizing the detection of the verticality of the steel pipe 3. When the above situation occurs, it is considered that the rubber pad on the second top plate 125 is worn or unevenly deformed, and the rubber pad needs to be reinstalled and the steel pipe 3 needs to be refixed; In the verticality detection method of the present invention, during the detection process, a portion of the pull rope 96 will fit on the outer surface of the steel pipe 3. When the steel pipe 3 is tilted, more pull ropes 96 fit on the outer surface of the steel pipe 3 in the tilting direction, and less pull ropes 96 fit on the outer surface of the steel pipe 3 in the reverse tilting direction. When the verticality detection is performed in this way, the extension and contraction amount of the pull rope 96 will be larger, thereby increasing the sensitivity of the detection. When there are two pairs of top blocks 91 , the length of the pull rope 96 is limited, which can also play a role in limiting the position of the steel pipe 3 .

[0032] Example 2: This example is a further improvement of Example 1. Figure 1-Figure 12 The bottom end of the hemispherical ball 6 is fixedly connected with a welding stress reduction component, and the welding stress reduction component includes an electric push rod 8 fixedly connected to the bottom end of the hemispherical ball 6. A knocking block 86 is slidably provided at the bottom end of the electric push rod 8. The knocking block 86 can rotate counterclockwise. The knocking block 86 is arranged in a right-angle trapezoid shape. After the knocking block 86 slides over the steel bar 2, it can quickly knock on the welding surface of the steel pipe 3, thereby eliminating stress.

[0033] There are two electric push rods 8, which are symmetrically fixed at the bottom end of the semicircular sphere 6. The bottom ends of the movable ends of the two electric push rods 8 are rotatably connected to the same circular ring 81. The bottom end of the circular ring 81 is fixedly connected to a connecting block 84. The inner side of the connecting block 84 is slidably connected to a sliding rod 85. The side of the sliding rod 85 close to the center of the circular ring 81 is fixedly connected to a knocking block 86. A spring 87 is arranged on the outer side of the sliding rod 85. The two ends of the spring 87 are respectively fixedly connected to one end of the connecting block 84 and one end of the knocking block 86.

[0034] Specifically, the outer surface of the ring 81 is in the shape of a toothed ring, and a first motor 82 is fixedly connected to the lower side of the movable end of the electric push rod 8, and a first gear 83 is fixedly connected to the bottom end of the first motor 82. The outer side of the first gear 83 is meshed with the outer surface of the ring 81, and the rotation of the ring 81 is realized by the rotation of the first motor 82.

[0035] Under the above settings, when the welding stress reduction component is working, the knocking block 86 is lowered to the welding position through the electric push rod 8, the first motor 82 rotates, and the ring 81 is rotated through the first gear 83, and the knocking block 86 rotates around the steel pipe 3. Under the action of the spring 87, after the knocking block 86 slides over the steel bar 2, it can quickly knock the welding surface of the steel pipe 3. After the welding is completed, the present invention uses the steel bar as a convex point to eliminate the welding stress, further reduce stress deformation, and ensure verticality.

[0036] The present invention also discloses a welding device for temporary consolidation of a cantilever continuous beam, the steps of which are: Step 1: The steel pipe 3 at the storage place is placed in a vertical state through the limit frame, and the connecting frame 4 is connected and fixed to the forklift through the connecting assembly. After the connection, the support plate 5 is kept stationary, and the semicircular ball 6 is automatically leveled under the action of gravity, so that the top surface of the semicircular ball 6 is in a horizontal state, and the hydraulic rod 10 is pushed to fix the horizontal state of the semicircular ball 6; Step 2: Use a forklift to move and lift the support plate 5, put the semicircular ball 6 in the support plate 5 on the outside of the steel pipe 3, and use the clamping assembly to clamp and fix the steel pipe 3. When the steel pipe 3 to be used is too high, a lifting device is required to assist in moving the steel pipe 3, such as setting up a simple gantry. The clamping assembly can also be clamped by a hydraulic rod. The screw 122 is used to reduce the setting of the oil circuit, save the counterweight link, and ensure that the top of the semicircular ball 6 is level when it is static. Step 3: Move the steel pipe 3 to the welding position, and use the detection component to detect the verticality of the steel pipe 3 again. After confirming that the verticality of the steel pipe 3 meets the standard, the steel pipe and the steel bar are welded by gas shielded welding. During welding, welding is performed simultaneously in the symmetrical direction to offset the welding stress. If the verticality of the steel pipe 3 does not meet the standard, it is considered that the rubber pad on the second top plate 125 is worn or unevenly deformed, and it is necessary to reinstall the rubber pad and re-fix the steel pipe 3; Step 4: After each weld is completed, stress reduction is performed by welding stress reduction components to further reduce stress deformation and ensure verticality.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for temporary consolidation of a cantilever continuous beam, comprising a connecting frame (4), characterized in that: One end of the connecting frame (4) is fixedly connected to a support plate (5), and a lifting ring (7) is provided on the support plate (5). A semi-circular ball (6) is rotatably connected to the inner side of the support plate (5). The interior of the semi-circular ball (6) is hollow, and a counterweight ring (13) for counterweight is provided on the inner side of the bottom end of the semi-circular ball (6). In a static state, the semi-circular ball (6) can be automatically leveled under the action of gravity so that the top surface of the semi-circular ball (6) is in a horizontal state. A hydraulic rod (10) is fixedly connected to the inner side of the support plate (5), and the movable end of the hydraulic rod (10) is fixedly connected to a first top plate (11). The surface of the first top plate (11) is provided with a rubber layer. After the semi-circular ball (6) is leveled, the first top plate (11) can support the semi-circular ball (6) and fix the semi-circular ball (6); A clamping assembly is arranged inside the hemispherical ball (6), and the clamping assembly includes a drive box (12). The steel pipe (3) placed inside the hemispherical ball (6) can be clamped by the clamping assembly; A measuring assembly is provided at the top of the hemispherical sphere (6), the measuring assembly comprising a rotating ring (92) rotating inside the top of the hemispherical sphere (6), and the verticality inspection of the steel pipe (3) after being fixed is realized through the measuring assembly; The bottom end of the hemispherical ball (6) is fixedly connected to a welding stress reduction component, and the welding stress reduction component comprises an electric push rod (8) fixedly connected to the bottom end of the hemispherical ball (6), and a knocking block (86) is slidably arranged at the bottom end of the electric push rod (8), and the knocking block (86) can rotate counterclockwise. The knocking block (86) is arranged in a right-angled trapezoid shape. After the knocking block (86) slides over the steel bar (2), it can quickly knock the welding surface of the steel pipe (3), thereby eliminating stress.

2. The welding device for temporary consolidation of cantilever continuous beams according to claim 1, characterized in that: The inner side of the drive box (12) is slidably connected to a slide plate (123), one end of which is fixedly connected to two limit rods (124), the limit rods (124) passing through the inner side of the drive box (12) and being fixedly connected to a second top plate (125), the pressing surface of the second top plate (125) is also fixedly connected to a rubber pad for increasing or decreasing friction and preventing local deformation of the clamping portion of the steel pipe (3), the inner side of the drive box (12) is rotatably connected to a screw rod (122), the outer side of the screw rod (122) is spirally connected to the inner side of the slide plate (123), and the second top plate (125) is pushed toward the pressing surface by the rotation of the screw rod (122), the inner side of the drive box (12) is fixedly connected to a high-torque motor (121), the main shaft end of the high-torque motor (121) is fixedly connected to the screw rod (122).

3. The welding device for temporary consolidation of cantilever continuous beams according to claim 2, characterized in that: Both sides of the top of the rotating ring (92) are fixedly connected to support rods (9), and the top of each support rod (9) is fixedly connected to a top block (91), two symmetrical top blocks (91) form a pair, and the rotating ring (92) is provided with a pair or two pairs of top blocks (91); The two top blocks (91) of each pair are connected by a pull rope (96), and the pull rope (96) is in a state capable of pulling and retracting. Each pair of top blocks (91) can rotate around the steel pipe (3). After one rotation, the verticality of the steel pipe (3) is detected by obtaining the maximum difference between the retraction amount and the pulling amount of the pull rope (96).

4. The welding device for temporary consolidation of cantilever continuous beams according to claim 3 is characterized in that: When a pair of top blocks (91) are provided on the rotating ring (92), a line connecting the two top blocks (91) is on the diameter of the rotating ring (92); when two pairs of top blocks (91) are provided on the rotating ring (92), a line connecting each pair of top blocks (91) is close to the diameter of the rotating ring (92).

5. The welding device for temporary consolidation of cantilever continuous beams according to claim 4, characterized in that: A fixed shaft (97) is fixedly connected to one of the top blocks (91) of each pair, a winding shaft (99) is rotatably connected to the outer side of the top end of the fixed shaft (97), a spring (98) is fixedly connected between the outer side of the fixed shaft (97) and the inner side of the winding shaft (99), one end of a pull rope (96) is fixed to the outer side of the winding shaft (99), the pull rope (96) is wound around the outer side of the winding shaft (99), and the other end of the pull rope (96) passes through the inner side of the top block (91) and is fixedly connected to the surface of the other top block (91) in the pair.

6. The welding device for temporary consolidation of cantilever continuous beams according to claim 5, characterized in that: The top end of the winding shaft (99) is fixedly connected to the input end of the rotation sensor (910) via a shaft. The rotation sensor (910) is fixed on the inner side of the top block (91). When the pull rope (96) is retracted or pulled, the winding shaft (99) rotates accordingly. The rotation sensor (910) collects the number of rotations and direction and transmits them to the controller (14).

7. The welding device for temporary consolidation of cantilever continuous beams according to claim 6, characterized in that: A gear ring (93) is fixedly connected to the inner side of the bottom end of the rotating ring (92), a second motor (94) is fixedly connected to the top end of the semicircular ball (6), a second gear (95) is fixedly connected to the top end of the second motor (94), the second gear (95) is meshed with the gear ring (93), and the rotation of the rotating ring (92) and the top block (91) is achieved by the rotation of the second motor (94).

8. The welding device for temporary consolidation of cantilever continuous beams according to claim 7, characterized in that: The number of the electric push rods (8) is two, and the two electric push rods (8) are symmetrically fixed at the bottom end of the semicircular ball (6). The bottom ends of the movable ends of the two electric push rods (8) are rotatably connected to the same circular ring (81). The bottom end of the circular ring (81) is fixedly connected to a connecting block (84). The inner side of the connecting block (84) is slidably connected to a sliding rod (85). The side of the sliding rod (85) close to the center of the circular ring (81) is fixedly connected to a knocking block (86). A spring (87) is arranged on the outer side of the sliding rod (85), and the two ends of the spring (87) are respectively fixedly connected to one end of the connecting block (84) and one end of the knocking block (86).

9. The welding device for temporary consolidation of cantilever continuous beams according to claim 8, characterized in that: The outer surface of the circular ring (81) is in the shape of a toothed ring. A first motor (82) is fixedly connected to the lower side of the movable end of the electric push rod (8). A first gear (83) is fixedly connected to the bottom end of the first motor (82). The outer side of the first gear (83) is meshed with the outer surface of the circular ring (81). The rotation of the circular ring (81) is achieved by the rotation of the first motor (82).

10. A welding device for temporary consolidation of a cantilever continuous beam, using the welding device according to claim 9, characterized in that: The steps are: Step 1: The steel pipe (3) at the storage place is placed in a vertical position by means of a limit frame, and the connecting frame (4) is connected and fixed to the forklift by means of a connecting assembly. After the connection, the support plate (5) is kept stationary, and the semicircular ball (6) is automatically leveled under the action of gravity so that the top surface of the semicircular ball (6) is in a horizontal state, and the hydraulic rod (10) is pushed to fix the horizontal state of the semicircular ball (6); Step 2: Using a forklift to move and lift the support plate (5), sleeve the semicircular ball (6) inside the support plate (5) outside the steel pipe (3), and clamp and fix the steel pipe (3) using a clamping assembly; Step 3: Move the steel pipe (3) to the welding position, and use the detection component to detect the verticality of the steel pipe (3) again. After confirming that the verticality of the steel pipe (3) meets the standard, the steel pipe and the steel bar are welded by gas shielded welding. During welding, welding is performed simultaneously in symmetrical directions to offset welding stress. Step 4: After each weld is completed, stress reduction is performed by welding stress reduction components to reduce stress deformation and ensure verticality.

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