Dust-proof beam and slab welding equipment for bridge construction

Abstract

The present invention complies with the field of welding technology, and mentions a dustproof beam-slab welding equipment for bridge construction. It includes a support table, the support table is equipped with an electric slide rail 1, the electric slider in the electric slide rail 1 is equipped with a lifting plate, the support table is fixedly connected to a support frame and is equipped with an electric slide rail 2, the electric slider in the electric slide rail 2 is equipped with a connecting plate, the connecting plate is fixedly connected to a fixed rod, the fixed rod is rotatably connected to a rotating frame 1, the rotating frame 1 is slidably connected to a fixed frame, the fixed frame is equipped with a welding head, the fixed frame is equipped with a motor, the output shaft of the motor is equipped with a driving wheel, the fixed rod is fixedly connected to a swivel, and the swivel is equipped with a driven wheel. The present invention speeds up the moving speed of the welding head by changing the rotation ratio between the driving wheel and the driven wheel, so that the distance moved by the welding head in unit time is consistent, thereby evenly distributing the welding points at the connection between the elliptical annular rib and the square support plate.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, in particular to dustproof beam and slab welding equipment for bridge construction. Background Art

[0002] A steel box girder is a box-section beam used in large-span bridges such as suspension bridges and cable-stayed bridges. It is made of welded steel plates. During the welding process of the steel plates, in order to reduce the weight of the steel box girder, through holes are opened in the middle of some steel plates. In order to increase the supporting strength at the through holes, a rib plate with the same cross-sectional shape as the through hole needs to be welded in the through holes.

[0003] In the process of welding steel plates and ribs, in order to speed up the progress of the project, automatic welding devices are used for welding. When welding elliptical annular ribs, most of the existing automatic welding devices weld the welding positions at a uniform speed around the center of a circle, which results in the welding head on the automatic welding device having a consistent angular velocity at each position. However, since the welding head needs to move along the outer side of the elliptical annular rib, the moving trajectory of the welding head is an ellipse. This results in the welding head moving from one end point of the long axis of the elliptical annular rib to one end point on the short axis. The distance traveled by the welding head per unit time becomes shorter and shorter (that is, the linear speed of the welding head becomes slower and slower), resulting in uneven thickness of the welding layer at the connection between the steel plate and the rib. Summary of the invention

[0004] In order to overcome the disadvantage that when welding elliptical annular ribs, the distance traveled by the welding head per unit time becomes shorter and shorter, resulting in uneven thickness of the welding layer at the connection between the steel plate and the rib, the present invention provides a dustproof beam and plate welding device for bridge construction.

[0005] The technical solution is: a dust-proof beam and slab welding equipment for bridge construction, comprising a support platform, an electric slide rail 1 is installed on the upper side of the support platform, an electric slider in the electric slide rail 1 is installed with a lifting plate, a support frame is fixedly connected to the upper side of the support platform and an electric slide rail 2 is installed, the electric slider in the electric slide rail 2 is installed with a connecting plate, a fixing rod is fixedly connected to the lower side of the connecting plate, the fixing rod is rotatably connected to a rotating frame 1, the rotating frame 1 is slidably connected to a fixing frame, and a tension spring is connected between the two, a welding head is installed at the lower part of the fixing frame close to the fixing rod side, a motor is installed at the upper part of the fixing frame close to the fixing rod side, a driving wheel is installed on the output shaft of the motor, a swivel is fixedly connected to the fixing rod, a driven wheel is installed on the lower side of the swivel, and the driving wheel and the driven wheel are frictionally driven.

[0006] Furthermore, a limiting rod one is fixedly connected to the upper part of the electric slide rail two, a limiting rod two is fixedly connected to the upper side of the fixing frame, the limiting rod two is squeezed and fitted with the limiting rod one, a track wheel is slidably connected to a side of the fixing frame close to the fixing rod, the track wheel is located on the upper side of the welding head, and a spring is connected between the track wheel and the fixing frame.

[0007] Furthermore, the fixed rod is rotatably connected to a rotating frame 2, the rotating frame 2 is fixedly connected to a liquid storage shell, a piston rod is slidably connected to the side of the liquid storage shell away from the rotating frame 2, the piston rod is fixedly connected to the fixed frame, the liquid storage shell is fixedly connected to a symmetrically distributed liquid exchange tube 1, the liquid exchange tube 1 is fixedly connected and communicated with a connecting shell, the connecting shell is slidably connected to a sealing block, and the sealing block is used to seal the adjacent liquid exchange tube 1.

[0008] Furthermore, the symmetrically distributed fluid exchange tubes 1 are all connected to the fluid storage shell, and the connecting points between the two ends of the fluid exchange tube 1 and the fluid storage shell are respectively located on both sides of the piston rod.

[0009] Furthermore, the fixing rod is fixedly connected to two groups of extrusion parts distributed in a cross shape, each group includes two extrusion parts distributed symmetrically around the center, the sealing block is fixedly connected to a pressure-bearing part, the pressure-bearing part is extruded and matched with one of the two groups of extrusion parts, a hydraulic telescopic rod is fixedly connected between the pressure-bearing part and the adjacent connecting shell, and a second fluid exchange pipe is connected between the fixed parts of the symmetrically distributed hydraulic telescopic rods.

[0010] Furthermore, the distances between the outer ends of the two groups of extrusion members and the fixing rod are not consistent, but the distances between the extrusion members and the pressure-bearing members matched therewith and the fixing rod are consistent.

[0011] Furthermore, it also includes a pneumatic telescopic rod 1, which is fixedly connected to the support frame, and the telescopic end of the pneumatic telescopic rod 1 is fixedly connected to the lifting plate, and a cross-distributed pneumatic telescopic rod 2 is fixedly connected to the center of the upper side of the lifting plate, and a ventilation pipe 1 is commonly connected between the fixed part of the cross-distributed pneumatic telescopic rod 2 and the fixed part of the pneumatic telescopic rod 1, the telescopic ends of the cross-distributed pneumatic telescopic rod 2 are far away from each other, and the telescopic end of the pneumatic telescopic rod 2 is fixedly connected to a fixing block.

[0012] Furthermore, the lower part of the fixed rod is slidably connected to a sliding shell, and a spring is connected between the two. The sliding shell is in contact with the lifting plate, and the sliding shell is fixed with circumferentially distributed air bags. The air bags and the side of the sliding shell away from the fixed rod are jointly fixed and connected with ventilation pipe 2.

[0013] Furthermore, the airbag is made of a high temperature resistant material.

[0014] Furthermore, a fixing ring is fixedly connected to the upper part of the support frame, and the inner side of the fixing ring is fixedly connected and connected to a circumferentially evenly distributed nozzle, and an exhaust pipe is fixedly connected and connected between the fixing ring and the fixed part of the pneumatic telescopic rod 1, and the fixed part of the pneumatic telescopic rod 1 is provided with an air inlet hole, and a one-way valve is provided in the air inlet hole.

[0015] Compared with the existing welding devices, the beneficial effects improved by the present invention when welding elliptical annular ribs are as follows: the present invention speeds up the moving speed of the welding head by changing the rotation ratio between the driving wheel and the driven wheel, so that the distance moved by the welding head per unit time is consistent, thereby making the welding points at the connection between the elliptical annular rib and the square support plate evenly distributed, preventing the thickness of the weld at the connection between the elliptical annular rib and the square support plate from gradually increasing due to the distance moved by the welding head per unit time becoming shorter and shorter during the welding process of the elliptical annular rib.

[0016] The present invention uses a one-way valve in the front liquid exchange tube to allow the piston rod to move only into the liquid storage shell (in the process of the welding head moving from the left end point of the long axis of the elliptical annular rib to the rear end point of the short axis), thereby preventing the track wheel from driving the welding head to move away from the axis of the fixed rod when the track wheel contacts hard impurities on the outside of the elliptical annular rib, causing the movement trajectory of the welding head to no longer be elliptical, resulting in the connection portion between the elliptical annular rib and the square support plate not being welded.

[0017] The present invention fixes the elliptical annular rib by moving the telescopic ends of the four pneumatic telescopic rods outward, and when the two ends of the long axis of the elliptical annular rib are not aligned with the adjacent fixing blocks, the balls on the two fixing blocks cause the elliptical annular rib to rotate around the center of the fixing rod, thereby correcting the tilted elliptical annular rib and preventing the elliptical annular rib from being unable to enter the elliptical hole of the support plate.

[0018] The present invention uses the gas ejected by the air jets evenly distributed on the fixing ring to clean the dust impurities on the outer side of the elliptical annular rib plate, thereby preventing the impurities on the outer side of the elliptical annular rib plate from affecting the welding of the welding head during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the support platform, the electric slide rail 1 and the lifting plate of the present invention;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the material lifting plate of the present invention in a material lifting state;

[0022] Figure 4It is a three-dimensional structural schematic diagram of the fixed rod, the rotating frame 1 and the fixed frame of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the motor, the driving wheel and the rotating ring of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the piston rod, the liquid exchange tube 1 and the connecting shell of the present invention;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the pressure-bearing member, the hydraulic telescopic rod and the second fluid exchange pipe of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the pneumatic telescopic rod 1, the pneumatic telescopic rod 2 and the vent pipe 1 of the present invention;

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fixing ring, the nozzle head and the exhaust pipe of the present invention.

[0028] Figure numbers: 1-support table, 2-electric slide rail 1, 3-lifting plate, 4-support frame, 5-electric slide rail 2, 6-connecting plate, 7-fixed rod, 8-rotating frame 1, 9-fixed frame, 10-welding head, 11-motor, 12-driving wheel, 13-swivel, 14-driven wheel, 15-limit rod 1, 16-limit rod 2, 17-track wheel, 18-rotating frame 2, 19-liquid storage shell, 20-piston rod, 21-liquid exchange tube 1, 22-connecting shell, 23-sealing block, 24-extrusion piece, 25-pressure piece, 26-hydraulic telescopic rod, 27-liquid exchange tube 2, 28-pneumatic telescopic rod 1, 29-pneumatic telescopic rod 2, 30-ventilation pipe 1, 31-fixed block, 32-sliding shell, 33-air bag, 34-ventilation pipe 2, 35-fixed ring, 36-injection head, 37-exhaust pipe. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] When the existing automatic welding device is used to weld elliptical annular ribs, the moving trajectory of the welding head is elliptical. This results in the welding head moving from one end point of the long axis of the elliptical annular rib to one end point on the short axis. The distance traveled by the welding head per unit time becomes shorter and shorter (that is, the linear speed of the welding head becomes slower and slower), resulting in uneven thickness of the welding layer at the connection between the steel plate and the rib.

[0031] Embodiment 1: A dustproof beam-slab welding device for bridge construction, such as Figure 1-Figure 5As shown, it includes a support platform 1, two electric slide rails 2 symmetrically distributed on the left and right are installed on the upper side of the support platform 1, and the electric sliders in the two electric slide rails 2 symmetrically distributed on the left and right are jointly installed with a lifting plate 3, and the lifting plate 3 is used to lift the elliptical annular rib plate, and a support frame 4 is fixedly connected to the upper side of the support platform 1, and the upper side of the support frame 4 is used to place a square support plate, and an electric slide rail 2 5 is installed on the upper side of the support platform 1, and the electric slider in the electric slide rail 2 5 is installed with a connecting plate 6, and a fixing rod 7 is fixedly connected to the lower side of the connecting plate 6, and the middle and lower parts of the fixing rod 7 are rotatably connected There is a rotating frame 8, the left end of the rotating frame 8 is slidably connected to a fixed frame 9, and a tension spring is connected between the two, a welding head 10 is installed at the lower part of the right side of the fixed frame 9, a motor 11 is installed at the upper part of the right side of the fixed frame 9, and a driving wheel 12 is installed on the output shaft of the motor 11. The driving wheel 12 is set to be truncated. The fixing rod 7 is fixedly connected to a swivel 13, and a driven wheel 14 is installed on the lower side of the swivel 13, and the busbar of the outer side of the driving wheel 12 is parallel to the busbar of the outer side of the driven wheel 14, so that the driving wheel 12 drives the driven wheel 14 to rotate by friction.

[0032] like Figure 3 and Figure 4 As shown, the upper part of the electric slide rail 25 is fixedly connected to a limit rod 15, the left side of the limit rod 15 is set as an inclined surface and the inclined surface on the left side of the limit rod 15 is inclined from top to bottom to the right, the upper side of the fixed frame 9 is fixedly connected to a limit rod 216, the right end of the limit rod 216 is provided with a ball, the ball at the right end of the limit rod 216 contacts the inclined surface on the left side of the limit rod 15, and slides along the inclined surface on the left side of the limit rod 15, the lower right side of the fixed frame 9 is slidably connected with a track wheel 17, the track wheel 17 is located on the upper side of the welding head 10, a spring is connected between the track wheel 17 and the fixed frame 9, the diameters of the upper and lower sides of the track wheel 17 are smaller than the diameter of the middle part, so that the track wheel 17 can avoid hard impurities.

[0033] like Figure 6 and Figure 7 As shown, the upper part of the fixed rod 7 is rotatably connected to a rotating frame 21, and the rotating frame 21 is fixedly connected to a liquid storage shell 19. The left side of the liquid storage shell 19 is slidably connected to a piston rod 20. The left end of the piston rod 20 is fixedly connected to the fixed frame 9. The liquid storage shell 19 is fixedly connected to two liquid exchange tubes 21 symmetrically distributed front and back. Both ends of the two liquid exchange tubes 21 symmetrically distributed front and back are connected to the liquid storage shell 19, and the connecting parts of the two ends of the liquid exchange tube 21 and the liquid storage shell 19 are respectively located on the left and right sides of the piston rod 20. A one-way valve is provided in the front liquid exchange tube 21, and this one-way valve allows the hydraulic oil to move only from right to left. The middle part of the liquid exchange tube 21 is fixedly connected and connected to a connecting shell 22, and the positions of the connecting shells 22 in the middle of the two liquid exchange tubes 21 are not the same. A sealing block 23 for sealing adjacent liquid exchange tubes 21 is slidably connected in the connecting shell 22.

[0034] like Figure 6and Figure 7 As shown, the fixed rod 7 is fixedly connected to two groups of extrusion pieces 24 distributed in a cross shape, each group includes two extrusion pieces 24 distributed symmetrically by the center, and the side of the extrusion piece 24 away from the fixed rod 7 is set to be semicircular, and a pressure-bearing piece 25 is fixedly connected to the upper side of the sealing block 23, and the pressure-bearing piece 25 is semicircular. The distances between the outer ends of the two groups of extrusion pieces 24 and the fixed rod 7 are inconsistent, and the pressure-bearing piece 25 on the rear side is extruded and matched with the two extrusion pieces 24 distributed symmetrically by the center on the left and right, and the pressure-bearing piece 25 on the front side is extruded and matched with the two extrusion pieces 24 distributed symmetrically by the center on the front and back. A hydraulic telescopic rod 26 is fixedly connected between the pressure-bearing piece 25 and the adjacent connecting shell 22, and a liquid exchange pipe 27 is connected between the fixed parts of the two hydraulic telescopic rods 26 distributed symmetrically by the front and back, and the above three are all filled with hydraulic oil.

[0035] When it is necessary to weld the elliptical annular rib into the elliptical hole of the square support plate, the staff first places the square support plate on the upper side of the support frame 4, and places the elliptical annular rib on the upper side of the lifting plate 3, and aligns the elliptical annular rib with the elliptical hole of the square support plate. Then the staff starts the two electric slide rails 2, and the electric sliders in the two electric slide rails 2 drive the elliptical annular rib to move upward through the lifting plate 3 until the middle part of the elliptical annular rib is flush with the elliptical hole of the square support plate, and then the staff stops the two electric slide rails 2.

[0036] After the staff shuts down the two electric slide rails 1 2 , the staff starts the electric slide rail 2 5 , and the electric slider on the electric slide rail 2 5 drives the fixed rod 7 to move downward through the connecting plate 6 , and the fixed rod 7 drives the parts thereon to move downward synchronously.

[0037] During the downward movement of the fixed rod 7, since the inclined surface on the left side of the limit rod 15 is inclined to the right from top to bottom, the fixed frame 9 drives the limit rod 2 16 to move rightward along the inclined surface on the left side of the limit rod 15 under the action of the tension spring between the rotating frame 1 8 and the fixed frame 9, until the track wheel 17 contacts the outer side surface of the elliptical annular rib, the ball at the right end of the limit rod 2 16 is still in contact with the inclined surface on the left side of the limit rod 15, but since the track wheel 17 is blocked by the outer side surface of the elliptical annular rib, the fixed frame 9 no longer drives the limit rod 2 16 to move rightward.

[0038] During the movement of the fixing frame 9 to the right, the fixing frame 9 drives the motor 11 to move to the right until the track wheel 17 contacts the outer side surface of the elliptical annular rib, and the motor 11 stops moving to the right, but at this time, the end with a smaller diameter of the driving wheel 12 contacts the driven wheel 14, and as the fixing rod 7 moves downward, until the lower end of the welding head 10 reaches the welding position, the ball at the right end of the limit rod 2 16 is no longer in contact with the inclined surface on the left side of the limit rod 15, the staff turns off the electric slide rail 2 5, and starts the motor 11 and the welding head 10, and the output shaft of the motor 11 drives the driving wheel 12 to rotate, and the driving wheel 12 rotates and cooperates with the driven wheel 14, so that the rotating frame 1 8 rotates around the axis of the fixing rod 7, and the rotating frame 1 8 drives the fixing frame 9 and the parts thereon to rotate around the axis of the fixing rod 7, until the welding head 10 moves from the left end point of the major axis of the elliptical annular rib to the rear end point of the minor axis, and the staff turns off the motor 11 and the welding head 10.

[0039] In the above process, under the action of the tension spring between the rotating frame 8 and the fixed frame 9, the track wheel 17 is always in contact with the outer side of the elliptical annular rib, so that the welding head 10 welds the connection between the elliptical annular rib and the square support plate along the elliptical track. At the same time, in this process, as the track wheel 17 slides along the outer side of the elliptical annular rib, under the action of the tension spring between the rotating frame 8 and the fixed frame 9, the fixed frame 9 gradually moves toward the direction close to the axis of the fixed rod 7, and the fixed frame 9 drives the driving wheel 12 through the motor 11 to gradually move toward the direction close to the center of the driven wheel 14, thereby changing the transmission ratio between the driving wheel 12 and the driven wheel 14, that is, accelerating the rotation speed of the driven wheel 14, thereby accelerating the moving speed of the welding head 10, making the distance moved by the welding head 10 per unit time consistent, so that the welding points at the connection between the elliptical annular rib and the square support plate are evenly distributed, preventing the welding head 10 from moving a shorter and shorter distance per unit time during the welding of the elliptical annular rib, resulting in a gradual increase in the welded thickness of the connection between the elliptical annular rib and the square support plate.

[0040] In the process of the welding head 10 moving from the left end point of the long axis of the elliptical annular rib to the rear end point of the short axis, the front fluid exchange tube 21 is in a connected state, and the rear fluid exchange tube 21 is in a blocked state. Therefore, under the action of the one-way valve in the front fluid exchange tube 21, the hydraulic oil can only move from the end away from the piston rod 20 to the end close to it, so that the piston rod 20 can only move into the liquid storage shell 19, thereby avoiding that during the movement of the track wheel 17, there are some hard impurities on the outer side of the elliptical annular rib that are difficult to remove (such as iron beads formed when cutting the elliptical annular rib) located on the moving track of the track wheel 17, resulting in that when the track wheel 17 contacts the hard impurities on the outside of the elliptical annular rib, under the squeezing effect of the hard impurities, the track wheel 17 drives the welding head 10 to move in a direction away from the axis of the fixed rod 7, causing the moving track of the welding head 10 to no longer be elliptical, resulting in the connection between the elliptical annular rib and the square support plate not being welded.

[0041] In the process of the welding head 10 moving from the left end point of the long axis of the elliptical annular rib to the rear end point of the short axis, when the track wheel 17 contacts the hard impurities on the outside of the elliptical annular rib, since the piston rod 20 can only move into the liquid storage shell 19, the track wheel 17 moves downward under the extrusion of the hard impurities and squeezes the adjacent spring, so that the track wheel 17 avoids the hard impurities, thereby preventing the hard impurities from affecting the movement of the track wheel 17.

[0042] In the process of the welding head 10 moving from the left end point of the long axis of the elliptical annular rib to the rear end point of the short axis, when the front pressure-bearing member 25 contacts the rear extrusion member 24, under the extrusion of the rear extrusion member 24, the front pressure-bearing member 25 drives the adjacent sealing block 23 to move downward, and the sealing block 23 moves downward to block the front fluid exchange pipe 1 21. In the process of the front pressure-bearing member 25 moving downward, the pressure-bearing member 25 drives the telescopic end of the adjacent hydraulic telescopic rod 26 to move downward, and transports the hydraulic oil therein to the rear hydraulic telescopic rod 26 through the fluid exchange pipe 27, so that the rear hydraulic telescopic rod 26 The telescopic end drives the adjacent pressure-bearing member 25 to move upward, and the pressure-bearing member 25 drives the adjacent sealing block 23 to move upward. The sealing block 23 moves upward to release the blockage of the rear fluid exchange tube 21. At this time, the staff starts the motor 11, and the output shaft of the motor 11 rotates in the opposite direction, thereby the transmission welding head 10 is reset from the rear end point of the short axis of the elliptical annular rib to the left end point of the long axis. In this process, since the rear fluid exchange tube 21 is in a connected state and the front fluid exchange tube 21 is in a disconnected state, the hydraulic oil in the liquid storage shell 19 can be freely connected front and back, so that the piston rod 20 can extend freely outward.

[0043] In the process of the welding head 10 moving from the rear end point of the short axis of the elliptical annular rib to the left end point of the long axis, when the rear pressure-bearing part 25 contacts the left extrusion part 24, under the extrusion of the left extrusion part 24, the rear pressure-bearing part 25 drives the adjacent sealing block 23 to move downward, and the sealing block 23 moves downward to block the rear fluid exchange tube 1 21. In the process of the rear pressure-bearing part 25 moving downward, the pressure-bearing part 25 drives the telescopic end of the adjacent hydraulic telescopic rod 26 to move downward, and transports the hydraulic oil therein to the front hydraulic telescopic rod 26 through the fluid exchange tube 27, so that the telescopic end of the front hydraulic telescopic rod 26 drives the adjacent pressure-bearing part 25 to move upward, and the pressure-bearing part 25 drives the adjacent sealing block 23 Move upward, the sealing block 23 moves up to release the blockage of the front fluid exchange tube 21. At this time, the front fluid exchange tube 21 is in a connected state, and the rear fluid exchange tube 21 is in a blocked state. At this time, the output shaft of the motor 11 continues to rotate, and the staff starts the welding head 10 until the welding head 10 moves to the front end point of the short axis of the elliptical annular rib. The front fluid exchange tube 21 is in a blocked state again, and the rear fluid exchange tube 21 is in a connected state again. At this time, the staff turns off the motor 11 and the welding head 10, and thus half of the elliptical annular rib is welded. Then, the above process is repeated, starting from the end point on the right side of the long axis of the elliptical annular rib, and the other half of the elliptical annular rib is welded.

[0044] During the welding process, when the welding head 10 welds the elliptical annular rib to the square support plate and the welding head 10 is located at the left end point of the long axis of the elliptical annular rib, the staff turns off the motor 11 and the welding head 10, and then starts the electric slide rail 2 5. The electric slider on the electric slide rail 2 5 drives the fixed rod 7 to move upward through the connecting plate 6, and the fixed rod 7 drives the parts thereon to move upward synchronously.

[0045] During the process of the fixing rod 7 moving upward and resetting, when the welding head 10 is reset to the initial position, the staff starts the two electric slide rails 2, and the electric sliders in the two electric slide rails 2 drive the lifting plate 3 to move downward and reset. After the lifting plate 3 completes the reset, the staff turns off the two electric slide rails 2, and removes the welded elliptical annular ribs and square support plates, and then repeats the above process to weld a new set of elliptical annular ribs and square support plates.

[0046] Embodiment 2: Based on embodiment 1, Figure 8 and Fig. 9As shown, it also includes two pneumatic telescopic rods 28 symmetrically distributed on the left and right, and the two pneumatic telescopic rods 28 symmetrically distributed on the left and right are both fixed to the support frame 4. The telescopic ends of the two pneumatic telescopic rods 28 symmetrically distributed on the left and right are both fixed to the lifting plate 3. Four pneumatic telescopic rods 29 distributed in a cross are fixed at the center of the upper side of the lifting plate 3. The fixed parts of the four pneumatic telescopic rods 29 distributed in a cross are commonly connected to the fixed parts of the pneumatic telescopic rods 28 by a ventilation pipe 30. The telescopic ends of the four pneumatic telescopic rods 29 distributed in a cross are far away from each other, and the telescopic ends of the pneumatic telescopic rods 29 are fixed to fixed blocks 31. Balls are provided on the sides of the four fixed blocks 31 that are far away from each other, which are used to correct the inclined elliptical annular ribs.

[0047] like Figure 8 and Fig. 9 As shown, the lower part of the fixed rod 7 is slidably connected to a sliding shell 32, and a spring is connected between the two. The sliding shell 32 is in contact with the lifting plate 3. The sliding shell 32 is fixed with four circumferentially distributed air bags 33. The air bags 33 are made of high-temperature resistant material to withstand high temperatures during welding. The four air bags 33 and the lower side of the sliding shell 32 are fixed together and connected with a ventilation pipe 2 34.

[0048] like Figure 8 and Fig. 9 As shown, a fixing ring 35 is fixedly connected to the upper part of the support frame 4, and the inner side of the fixing ring 35 is fixedly connected and connected to the circumferentially evenly distributed nozzles 36, and the fixed parts of the two pneumatic telescopic rods 28 are fixedly connected to the fixing ring 35 and connected to the exhaust pipe 37. The fixed part of the pneumatic telescopic rod 28 is provided with an air inlet hole, and a one-way valve is provided in the air inlet hole. This one-way valve is only used for gas to enter the fixed part of the pneumatic telescopic rod 28 from the outside through the air inlet hole.

[0049] When the staff places the elliptical annular rib to be welded on the lifting plate 3, the staff needs to ensure that the four fixing blocks 31 are all located in the elliptical annular rib. Then, when the lifting plate 3 moves upward, the lifting plate 3 drives the telescopic ends of the two pneumatic telescopic rods 28 to move upward. The telescopic end of the pneumatic telescopic rod 1 28 moves upward to transport the gas in its fixed part through the ventilation pipe 1 30 to the four pneumatic telescopic rods 29, so that the telescopic ends of the four pneumatic telescopic rods 29 all move outward, and the telescopic ends of the pneumatic telescopic rods 29 drive the adjacent fixing blocks 31 to move until the two vertical fixing blocks 31 contact the two ends of the short axis on the elliptical annular rib, the telescopic ends of the two vertical pneumatic telescopic rods 29 no longer move outward, and the telescopic ends of the two horizontal pneumatic telescopic rods 29 continue to move outward until the four fixing blocks 31 all contact the inner side of the elliptical annular rib, the telescopic ends of the four pneumatic telescopic rods 29 no longer move outward, and the elliptical annular rib is fixed in this way.

[0050] In the process that the telescopic ends of the four pneumatic telescopic rods 29 are moving outward, if the elliptical annular rib is tilted, that is, the two ends of the long axis of the elliptical annular rib are not aligned with the adjacent fixed blocks 31, at this time, when the two horizontal fixed blocks 31 are in contact with the inner side of the elliptical annular rib, under the squeezing action of the two horizontal fixed blocks 31, the elliptical annular rib rotates around the center of the circle of the fixed rod 7 until the balls on the two horizontal fixed blocks 31 are in contact with the two ends of the long axis of the elliptical annular rib respectively, and the elliptical annular rib stops rotating, so as to correct the tilted elliptical annular rib and prevent the elliptical annular rib from being unable to enter the elliptical hole of the support plate.

[0051] In the process of the fixed rod 7 driving the sliding shell 32 to move downward, when the sliding shell 32 contacts the lifting plate 3, the sliding shell 32 stops moving downward, and then under the squeezing action of the downward movement of the fixed rod 7, the spring in the sliding shell 32 is compressed, and at the same time, the gas in the sliding shell 32 enters the four air bags 33 through the four ventilation pipes 234, causing the four air bags 33 to expand and deform, and contact the inner side of the connection between the elliptical annular rib and the square support plate, so that during the welding process, the four air bags 33 support the inner side of the connection between the elliptical annular rib and the square support plate.

[0052] During the downward movement of the fixing rod 7, part of the gas in the fixing parts of the two pneumatic telescopic rods 28 enters the fixing ring 35 through the exhaust pipe 37, and is ejected from the nozzles 36 evenly distributed on the fixing ring 35 to clean the dust-type impurities on the outside of the elliptical annular rib, thereby preventing the impurities on the outside of the elliptical annular rib from affecting the welding of the welding head 10 during the welding process.

[0053] During the process of the lifting plate 3 moving downward and resetting, the lifting plate 3 drives the telescopic ends of the two pneumatic telescopic rods 28 to move downward. The telescopic ends of the pneumatic telescopic rods 28 move downward to extract the gas in the four pneumatic telescopic rods 29 through the ventilation pipe 30, so that the telescopic ends of the four pneumatic telescopic rods 29 shrink and reset. At this time, under the action of the balls on the fixed block 31, the fixed block 31 does not drive the elliptical annular rib to move downward.

[0054] During the downward movement and restoration of the lifting plate 3, as the lifting plate 3 moves downward, under the action of the spring between the fixed rod 7 and the sliding shell 32, the sliding shell 32 moves downward and restores, and extracts the gas in the four air bags 33 through the four ventilation pipes 234, causing the four air bags 33 to shrink and restore. Until the lifting plate 3 stops moving downward, the sliding shell 32 stops moving downward, and the four air bags 33 restore to their initial state. During the downward movement of the telescopic end of the pneumatic telescopic rod 28, the pneumatic telescopic rod 28 extracts outside air through the air inlet hole on its fixed part to supplement the gas ejected from the nozzle 36.

[0055] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art may make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments.

Claims

1. A dustproof beam-slab welding device for bridge construction, comprising a support platform (1), wherein two electric slide rails (2) symmetrically distributed on the left and right are installed on the upper side of the support platform (1), and the electric sliders in the two electric slide rails (2) symmetrically distributed on the left and right are jointly installed with a lifting plate (3), and the lifting plate (3) is used to lift the elliptical annular rib plate, and the upper side of the support platform (1) is fixedly connected with a support frame (4), and the upper side of the support frame (4) is used to place a square support plate, and the upper side of the support platform (1) is installed with an electric slide rail (5), and the electric slider in the electric slide rail (5) is installed with a connecting plate (6), and the lower side of the connecting plate (6) is fixedly connected with a fixing rod (7), and the middle and lower part of the fixing rod (7) is rotatably connected with a rotating frame (8), and the left end of the rotating frame (8) is slidably connected with a fixed The fixing frame (9) is provided with a tension spring therebetween; a welding head (10) is mounted on the lower part of the right side of the fixing frame (9); a motor (11) is mounted on the upper part of the right side of the fixing frame (9); a driving wheel (12) is mounted on the output shaft of the motor (11); the driving wheel (12) is arranged in a truncated cone shape; the driving wheel (12) is provided with an end with a small diameter; a rotating ring (13) is fixedly connected to the fixing rod (7); a driven wheel (14) is mounted on the lower side of the rotating ring (13); a generatrix on the outer side surface of the driving wheel (12) is parallel to a generatrix on the outer side surface of the driven wheel (14); the driving wheel (12) drives the driven wheel (14) to rotate by friction; and by changing the rotation ratio between the driving wheel (12) and the driven wheel (14), the distance moved by the welding head in a unit time is made consistent; The upper part of the electric slide rail 2 (5) is fixedly connected to a limit rod 1 (15), the left side of the limit rod 1 (15) is arranged as an inclined surface and the inclined surface on the left side of the limit rod 1 (15) is inclined rightward from top to bottom, the upper side of the fixed frame (9) is fixedly connected to a limit rod 2 (16), the right end of the limit rod 2 (16) is arranged with a ball, the ball at the right end of the limit rod 2 (16) contacts the inclined surface on the left side of the limit rod 1 (15) and slides along the inclined surface on the left side of the limit rod 1 (15), the lower part of the right side of the fixed frame (9) is slidably connected to a track wheel (17), the track wheel (17) is located on the upper side of the welding head (10), a spring is connected between the track wheel (17) and the fixed frame (9), and the diameters of the upper and lower sides of the track wheel (17) are both smaller than the diameter of the middle part.

2. A dustproof beam-slab welding device for bridge construction according to claim 1, Its characteristics are: The fixed rod (7) is rotatably connected to a rotating frame 2 (18), the rotating frame 2 (18) is fixedly connected to a liquid storage shell (19), a piston rod (20) is slidably connected to a side of the liquid storage shell (19) away from the rotating frame 2 (18), the piston rod (20) is fixedly connected to the fixed frame (9), the liquid storage shell (19) is fixedly connected to symmetrically distributed liquid exchange tubes 1 (21), the liquid exchange tubes 1 (21) are fixedly connected to and communicated with a connecting shell (22), the connecting shell (22) is slidably connected to a sealing block (23), the sealing block (23) is used to seal the adjacent liquid exchange tubes 1 (21).

3. A dustproof beam-slab welding device for bridge construction according to claim 2, Its characteristics are: The symmetrically distributed fluid exchange tubes 1 (21) are both connected to the fluid storage shell (19), and the connecting points between the two ends of the fluid exchange tube 1 (21) and the fluid storage shell (19) are located on both sides of the piston rod (20).

4. A dustproof beam-slab welding device for bridge construction according to claim 2, Its characteristics are: The fixing rod (7) is fixedly connected to two groups of extrusion members (24) distributed in a cross shape, each group comprising two extrusion members (24) distributed symmetrically around the center; the sealing block (23) is fixedly connected to a pressure-bearing member (25), the pressure-bearing member (25) is extruded and matched with one of the two groups of extrusion members (24); a hydraulic telescopic rod (26) is fixedly connected between the pressure-bearing member (25) and the adjacent connecting shell (22); and a second fluid exchange pipe (27) is connected between the fixed parts of the symmetrically distributed hydraulic telescopic rods (26).

5. A dustproof beam-slab welding device for bridge construction according to claim 4, Its characteristics are: The distances between the outer ends of the two groups of extrusion pieces (24) and the fixing rod (7) are not consistent, but the distances between the extrusion pieces (24) and the pressure-bearing pieces (25) matched therewith and the fixing rod (7) are consistent.

6. The dustproof beam-slab welding equipment for bridge construction according to claim 1, Its characteristics are: It also includes a pneumatic telescopic rod (28), the pneumatic telescopic rod (28) being fixedly connected to the support frame (4), the telescopic end of the pneumatic telescopic rod (28) being fixedly connected to the lifting plate (3), a pneumatic telescopic rod (29) being cross-distributed and fixedly connected to the center of the upper side of the lifting plate (3), a vent pipe (30) being commonly connected between the fixed part of the pneumatic telescopic rod (29) being cross-distributed and the fixed part of the pneumatic telescopic rod (28), the telescopic ends of the pneumatic telescopic rod (29) being cross-distributed and being separated from each other, and a fixing block (31) being fixedly connected to the telescopic end of the pneumatic telescopic rod (29).

7. A dustproof beam-slab welding device for bridge construction according to claim 6, Its characteristics are: The lower part of the fixed rod (7) is slidably connected to a sliding shell (32), and a spring is connected between the two. The sliding shell (32) is in contact with the lifting plate (3). The sliding shell (32) is fixedly connected to a circumferentially distributed air bag (33). The air bag (33) and the side of the sliding shell (32) away from the fixed rod (7) are fixedly connected and communicated with a second ventilation pipe (34).

8. The dustproof beam-slab welding equipment for bridge construction according to claim 7, Its characteristics are: The airbag (33) is made of a high temperature resistant material.

9. The dustproof beam-slab welding equipment for bridge construction according to claim 6, Its characteristics are: A fixing ring (35) is fixedly connected to the upper part of the support frame (4), and the inner side of the fixing ring (35) is fixedly connected to and communicated with circumferentially evenly distributed nozzles (36). An exhaust pipe (37) is fixedly connected to and communicated with the fixing part of the pneumatic telescopic rod (28). The fixing part of the pneumatic telescopic rod (28) is provided with an air inlet hole, and a one-way valve is provided in the air inlet hole.

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