Steel box girder web welding device

Abstract

The invention provides a steel box girder web welding device, and belongs to the technical field of steel box girder welding equipment. The clamping assembly comprises a group of longitudinal beams which are arranged in a bidirectional moving mode, two groups of clamping pieces are arranged at the two ends of each longitudinal beam, each group of clamping pieces are arranged in a bidirectional moving mode, each clamping piece comprises a telescopic rod, the movable end of each clamping piece is connected with a mounting base, a supporting plate is arranged on the bottom face of one end of each mounting base, and a telescopic limiting plate is arranged at the other end of each mounting base; the web feeding assembly comprises a conveying belt used for conveying webs and rotating pieces used for bearing the webs and vertically rotating the webs upwards by 90 degrees, and push-out pieces are arranged on the outer sides of the two rotating pieces and used for pushing out the webs on the two rotating pieces; the two welding assemblies comprise six-axis mechanical arms and welding guns and are used for welding the butt joint position of the web and the top plate and the butt joint position of the upper side of the partition plate and the upper side of the web. By means of the scheme, the webs at the two ends can be synchronously fed, the machining time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of steel box girder welding equipment, and particularly relates to a steel box girder welding device. Background Technology

[0002] A steel box girder is a load-bearing structure made of steel plates welded into a box-shaped cross-section, used in bridge engineering. Figure 1 This is a schematic diagram of an inverted steel box girder structure. The steel box girder body 1 includes a top plate 2, with first ribs 3 evenly distributed along the length of the top plate 2. A set of symmetrically arranged partitions 4 are vertically arranged on both sides of the middle of the bottom surface of the top plate 2. The two ends of the partitions 4 need to be connected to the same web plate 6. For ease of operation during assembly and welding, it is usually placed upside down on the workbench. During the welding process, to avoid bending of the partitions 4, the partitions 4 are welded first, followed by the web plates 6 at both ends. Finally, the remaining parts on the outer sides of the two web plates 6 are welded in sequence.

[0003] However, when welding the web plate 6, due to the distance between the first ribs 3, it is not possible to insert it directly from the width direction of the partition plate 4. Instead, the end of the second rib 7 on one side of the web plate 6 can be inserted into the corresponding notch 5 at the same end of the two partition plates 4 along the width direction of the top plate 2. Then, the lower side of the web plate 6 and the top plate 2 are joined together, and the upper side of the web plate 6 and the upper side of the partition plate 4 are joined together for preliminary welding and positioning.

[0004] When the web plate 6 is inserted, hoisting equipment is usually used to lift the web plate 6 vertically in the assembly direction. During hoisting, the lower side of the web plate 6 needs to be supported by lifting components, and at least two contact points need to be set on the lower side of the web plate 6 to keep the web plate 6 balanced during the hoisting process. When the web plate 6 is hoisted to one side of the top plate 2, the second rib 7 on one side of the web plate 6 is slowly inserted into the notch 5, and the lifting components at the contact points are removed one by one. After the lifting components are completely removed, a section of the web plate 6 is still located outside the top plate 2, so it needs to be manually pushed in a second time. Moreover, only one end of the web plate 6 can be operated at a time, so the efficiency needs to be improved. Summary of the Invention

[0005] To address the shortcomings of the existing technology, this invention provides a steel box girder web welding device that can simultaneously feed web plates at both ends, shortening processing time and improving work efficiency.

[0006] In order to achieve the objective of this invention, the following solution is proposed: A welding device for the web of a steel box girder, comprising: The main body conveying assembly includes a first conveying roller for conveying the steel box girder body and a second conveying roller vertically disposed on one side of its conveying direction end. The first conveying roller has a clearance hole at its conveying direction end, and a reversing output component is vertically inserted inside it. A blocking plate is provided at the outer end of the clearance hole. The clamping assembly includes a crossbeam parallel to the end of the first conveying roller in the conveying direction, with its short axis coplanar with the long axis of the second conveying roller. A set of longitudinal beams is provided at both ends of the crossbeam in both directions. Two sets of clamping members are provided at both ends of the longitudinal beams. The clamping members are provided in both directions along the length of the longitudinal beams. The assembly includes a vertically arranged telescopic rod with its movable end facing downward and connected to a mounting base parallel to the conveying direction of the first conveying roller. One end of the mounting base has an L-shaped support plate with its inner right angle facing outward, and the other end has a telescopic limiting plate parallel to the vertical part of the support plate. The web plate feeding assembly is located on the other side of the first conveyor roller and is symmetrically arranged on both sides of the plane where the short axis of the crossbeam and the long axis of the second conveyor roller are located. It includes a conveyor belt for conveying the web plate. The end of the conveying direction is provided with a rotating part that is rotatably connected to the other side of the first conveyor roller for receiving the web plate and rotating the web plate vertically upward by 90°. The two rotating parts are provided with push-out parts on the outside for pushing out the web plate on the two rotating parts. The welding assembly consists of two parts, including a six-axis robotic arm that moves outward along the length of the longitudinal beam. Its output end is equipped with a welding torch for welding the joint between the web and the top plate and the joint between the upper part of the partition and the upper part of the web.

[0007] Furthermore, a first side plate is provided on the side of the first conveying roller facing the second conveying roller, and the height of its top surface is greater than the thickness of the top plate of the steel box girder. A second side plate is provided on the other side of the first conveying roller, parallel to the first side plate, and the height of the top surface of the second side plate is the same as the thickness of the top plate of the steel box girder body.

[0008] Furthermore, the top surface of the reversing output component is provided with two sets of parallel and spaced third conveying rollers, whose conveying direction is perpendicular to the conveying direction of the first conveying roller.

[0009] Furthermore, a second cylinder is provided at one end of the mounting base, and its output end passes through the mounting base and is connected to a limiting plate. All mounting bases have a first inclined surface on the side facing the rotating part.

[0010] Furthermore, the vertical part of the pallet is arranged with multiple rows of T-shaped nails on the side facing the limiting plate. The number of rows is the same as the number of notches at both ends of the partition. The vertical part of the T-shaped nail is fitted with a sleeve. When the lower end of the pallet abuts against the top plate, the upper side of each row of sleeves is projected higher than the lower side of the corresponding row of notches in the direction of the notch. The distance of the higher position is less than half of the distance difference between the two sides of the second rib and the upper and lower sides of the notch.

[0011] Furthermore, the bottom surface of the horizontal part of the tray is recessed and has a slot.

[0012] Furthermore, a support platform is provided on the outer side of the two rotating parts, and a mounting plate is provided vertically on one side of the support platform. The rotating part includes a rotating shaft with one end rotatably connected to the other side of the first conveying roller. Circular plates are provided coaxially at both ends of the shaft. U-shaped plates are arranged in a circumferential array along the circumference of the circular plates. The two ends of the U-shaped plates are respectively connected to the circular plates. Two second inclined surfaces are symmetrically provided at the openings of the U-shaped plates. A first motor is provided after the outer end of the rotating shaft passes through the mounting plate.

[0013] Furthermore, the U-shaped plate has a roller rotating in the recessed part. When the opening of the U-shaped plate is vertically upward, the projection of the upper side of the roller in the direction of the first conveying roller is flush with the upward-facing side of the top plate.

[0014] Furthermore, the ejector includes a first cylinder located on the top surface of the mounting plate, with a horizontal plate at its output end. The projection of the horizontal plate in the direction of the U-shaped plate falls outside the distribution trajectory of the U-shaped plate. Push plates are vertically provided at both ends of the horizontal plate, and the width of the push plates is smaller than the opening width of the U-shaped plate.

[0015] Furthermore, a sealing plate is provided at the end of the U-shaped plate away from the first conveying roller, and the height of the sealing plate is less than half the vertical length of the U-shaped plate.

[0016] The beneficial effects of this invention are as follows: A set of rotating parts is used to rotate the two web plates to a vertical position simultaneously, and then push them out using an ejector, thereby enabling the web plates at both ends of the partition to be fed at the same time. This allows the two welding guns to weld synchronously. A set of clamping parts is used to clamp the sides of both ends of the partition to prevent the partition from bending during the web plate feeding process. This not only improves work efficiency but also ensures the perpendicularity of the partition to the top plate, thus ensuring welding quality. Attached Figure Description

[0017] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of the invention.

[0018] Figure 1 A schematic diagram of an inverted steel box girder structure is shown.

[0019] Figure 2 The diagram shows the three-dimensional structure and application scenario of this application.

[0020] Figure 3 This diagram shows a cross-sectional view of the web and the limiting plate of this application, parallel to the axis of rotation.

[0021] Figure 4 This application shows Figure 2 A magnified view of part A in the diagram.

[0022] Figure 5 This diagram shows the state of the tray moving to the top surface of the top plate after the web plate loading assembly is removed.

[0023] Figure 6 A cross-sectional schematic diagram along the length of the conveyor belt is shown.

[0024] Figure 7 This application shows Figure 6 A magnified view of part B in the diagram.

[0025] Figure 8 This application shows Figure 7 A magnified view of part C in the diagram.

[0026] Figure 9 This diagram illustrates the state of the web plate of this application moving past a set of clamping members.

[0027] Figure 10 This application shows Figure 9 A magnified view of part D in the diagram.

[0028] Figure 11 A schematic diagram of the orthographic projection of the rotating component of this application toward the support platform is shown.

[0029] Figure 12 This diagram illustrates the state in which the center of gravity of the web plate of this application is positioned between the two sets of clamping members.

[0030] Figure 13 This diagram shows the state in which the reversing output component of this application vertically lifts the main body of the steel box girder.

[0031] Figure 14 This application shows Figure 7 A magnified view of part E in the diagram.

[0032] Markings in the diagram: Steel box girder body-1, top plate-2, first rib-3, partition plate-4, notch-5, web plate-6, second rib-7, body conveying assembly-10, first conveying roller-11, first side plate-111, second side plate-112, blocking plate-12, second conveying roller-13, reversing output component-14, third conveying roller-141, clamping assembly-20, crossbeam-21, longitudinal beam-22, telescopic rod-23, mounting base-24, second cylinder-241, first inclined plane-2 42. Pallet - 25. T-shaped nail - 251. Sleeve - 252. Slot - 253. Limiting plate - 26. Web plate loading assembly - 30. Conveyor belt - 31. Rotating component - 32. Rotating shaft - 321. U-shaped plate - 322. First motor - 323. Roller - 324. Sealing plate - 325. Pushing component - 33. First cylinder - 331. Horizontal plate - 332. Push plate - 333. Support platform - 34. Mounting plate - 341. Welding assembly - 40. Six-axis robotic arm - 41. Welding gun - 42. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention will be described in detail below with reference to the accompanying drawings. However, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments.

[0034] like Figures 2-14 As shown, this embodiment provides a welding device for the web of a steel box girder, used for welding such as... Figure 1 The steel box girder body 1 shown has two web plates 6. The device includes a body conveying assembly 10, a clamping assembly 20, a web plate loading assembly 30, and a welding assembly 40.

[0035] Specifically, such as Figures 2-3 As shown, the main body conveying assembly 10 includes a first conveying roller 11, a blocking plate 12, a second conveying roller 13, and a reversing output component 14. The first conveying roller 11 is used to convey the steel box girder body 1, and the length direction of the steel box girder body 1 is consistent with the conveying direction of the first conveying roller 11 during conveying. The first conveying roller 11 has a first side plate 111 and a second side plate 112 on both sides of the conveying direction, which are used to limit and guide the conveyed steel box girder body 1 on both sides. The top surface height of the first side plate 111 is greater than the thickness of the top plate 2, and the top surface height of the second side plate 112 is the same as or less than the thickness of the top plate 2.

[0036] The blocking plate 12 is vertically disposed at the end of the conveying direction of the first conveying roller 11, and the two sides of the blocking plate 12 are perpendicular to the ends of the first side plate 111 and the second side plate 112, respectively. The conveying direction of the second conveying roller 13 is perpendicular to the conveying direction of the first conveying roller 11, and the second conveying roller 13 is disposed on the outside of the first side plate 111 and corresponds to the end of the conveying direction of the first conveying roller 11.

[0037] At the intersection of the long axis of the second conveying roller 13 in the conveying direction and the long axis of the first conveying roller 11 in the conveying direction, there is a vertical clearance hole that passes through the first conveying roller 11. The reversing output component 14 is vertically inserted into the clearance hole and is used to lift the welded steel box girder body 1 upward and convey it to the second conveying roller 13 for output.

[0038] The length direction of the reversing output component 14 is consistent with the conveying direction of the first conveying roller 11. Its top surface is provided with two sets of parallel and spaced third conveying rollers 141 to shorten the axial length of the third conveying rollers 141 and ensure output efficiency. The vertical movement of the reversing output component 14 can be achieved by a vertically arranged hydraulic cylinder or electric cylinder.

[0039] like Figure 2As shown, the clamping assembly 20 includes a crossbeam 21, a longitudinal beam 22, a telescopic rod 23, and clamping elements. The crossbeam 21 is arranged parallel to the long axis of the first conveying roller 11 and above the end of the first conveying roller 11 in the conveying direction, and the projection of the intersection of the long axis and the short axis of the crossbeam 21 on the first conveying roller 11 coincides with the intersection of the long axis of the second conveying roller 13 in the conveying direction and the long axis of the first conveying roller 11 in the conveying direction.

[0040] The crossbeam 21 has symmetrical first sliding grooves on both sides of its short axis, which are vertically connected to the crossbeam 21. The length direction of the first sliding grooves is consistent with the length direction of the crossbeam 21. The outer ends of the two first sliding grooves are respectively provided with first supports. The crossbeam 21 is provided with a first bidirectional lead screw. The two ends of the first bidirectional lead screw are respectively rotatably connected to the first support. One end of the first bidirectional lead screw is provided with a second motor.

[0041] Two longitudinal beams 22 are provided, and are respectively arranged along the length direction perpendicular to the crossbeam 21. The short axis of the longitudinal beam 22 is parallel to the long axis of the crossbeam 21 and is located below it. The top surface of the longitudinal beam 22 is provided with a first connecting seat vertically corresponding to the short axis. The upper end of the first connecting seat passes through the corresponding first slide groove and is threadedly connected to the threaded section on one side of the first bidirectional lead screw. The first connecting seat is slidably connected to the first slide groove. In use, the first lead screw is driven to rotate by the second motor, thereby adjusting the two longitudinal beams 22 to move closer or further apart, so as to realize the synchronous bidirectional movement of the two longitudinal beams 22.

[0042] The longitudinal beam 22 has symmetrical second sliding grooves on both sides of its short axis, which are vertically connected to the longitudinal beam 22. The length direction of the second sliding grooves is consistent with the length direction of the longitudinal beam 22. The outer ends of the two second sliding grooves are respectively provided with second supports. The longitudinal beam 22 is provided with a second double-acting screw. The two ends of the second double-acting screw are respectively rotatably connected to the second supports. One end of the second double-acting screw is provided with a third motor for driving the second double-acting screw to rotate.

[0043] The second bidirectional lead screw has two sets of bidirectional threads symmetrically arranged at both ends. Each second slide groove has one set of threads on a section of the second bidirectional lead screw. Each set of bidirectional threads has a stepped shaft in the middle, and the outer diameter of the stepped shaft is larger than the outer diameter of the second bidirectional lead screw.

[0044] like Figures 2-5 As shown, the clamping components are provided in four sets, and a set of clamping components is symmetrically provided on each of the two thread segments of a set of bidirectional threads. During welding, a set of clamping components is brought close to each other to limit the two sides of one end of the same partition 4, so that the partition 4 remains vertical during the welding process. The clamping components include a telescopic rod 23, a mounting base 24, a support plate 25, and a limiting plate 26. The upper end of the telescopic rod 23 is provided with a second connecting seat, which is slidably connected to the second slide groove and threadedly connected to one thread segment of the corresponding set of bidirectional threads. The movable end of the telescopic rod 23 is vertically downward. The telescopic rod 23 can be implemented by a hydraulic rod or an electric telescopic rod.

[0045] Mounting base 24 is located at the movable end of telescopic rod 23, and the length direction of mounting base 24 is parallel to the length direction of crossbeam 21. Support plate 25 has an L-shaped structure, and its upper vertical part is connected to the bottom surface of one end of mounting base 24. The horizontal part of support plate 25 on the same side is aligned with the direction of the corresponding end of crossbeam 21. In use, web plate 6 is parallel to the vertical part of support plate 25 and enters between one end of two partitions 4 and one first rib 3 corresponding to one end of two partitions 4 along the front of horizontal part of support plate 25.

[0046] Preferably, in order to avoid the second connecting seat at the upper end of the telescopic rod 23 affecting the distance between the mounting seats 24 when a group of clamping parts are close to each other, so that the vertical part of the support plate 25 cannot be kept close to the two sides of the partition plate 4, thus making it impossible to ensure that the partition plate 4 is in a vertical state during the welding process, a cantilever is provided vertically on the outside of the mounting seat 24 of the same group of clamping parts, so that the movable end of the telescopic rod 23 is vertically connected to the cantilever.

[0047] A second cylinder 241 is provided at one end of the mounting base 24. Its output end passes through the mounting base 24 along the length direction of the mounting base 24 and is connected to the upper end of the limiting plate 26 facing the vertical part of the support plate 25. The length direction of the limiting plate 26 is parallel to the length direction of the vertical part of the support plate 25. It is used to limit and guide the outer side of the web plate 6 when the web plate 6 enters between one end of the two partitions 4 and one first rib 3 corresponding to one end of the two partitions 4.

[0048] Preferred, such as Figures 6-8 As shown, to prevent the web plate 6 from tilting downwards when one end of the web plate 6 in the forward direction does not contact a set of clamping members that are farther away in the forward direction during the entry process, the projection of the other end of the mounting seat 24 on the horizontal plane is placed within the movement trajectory of the web plate 6, so that the mounting seat 24 limits the upper side of the web plate 6 during the entry process, so as to ensure that the web plate 6 maintains parallel movement during the movement.

[0049] like Figures 8-10 As shown, in order to avoid interference with the mounting base 24 when the upper part of the web plate 6 moves into the space below the mounting base 24, a first inclined surface 242 is provided on the side of the bottom surface of all mounting bases 24 facing the direction of entry of the web plate 6.

[0050] like Figure 8 , Figure 10 , Figure 13As shown, multiple rows of T-shaped nails 251 are vertically arranged inside the vertical part of the support plate 25. The number of rows of T-shaped nails 251 is the same as the number of notches 5 at one end of the partition plate 4, and the center distance between two adjacent T-shaped nails 251 is the same as the center distance between two adjacent notches 5. A sleeve 252 is provided on the outside of the T-shaped nails 251. The sleeve 252 is rotatably connected to the vertical part of the T-shaped nails 251, and the outer diameter of the sleeve 252 is larger than the horizontal diameter of the T-shaped nails 251, while the inner diameter of the sleeve 252 is smaller than the horizontal diameter of the T-shaped nails 251. When the support plate 25 moves vertically to the bottom, the bottom surface of the horizontal part of the support plate 25 abuts against the top plate 2. At this time, the projection of the upper side of each sleeve 252 on the partition plate 4 coincides with the lower side of the notch 5, so that during the entry of the web plate 6, the bottom surface of the second rib 7 on the web plate 6 contacts the sleeve 252, thereby dispersing the pressure of the notch 5.

[0051] Preferably, in order to reduce the friction between the second rib 7 and the notch 5 during the movement of the web 6, when the support plate 25 moves vertically to the lowest point, the projection of the upper side of each sleeve 252 on the partition plate 4 is slightly higher than the lower side of the notch 5, and the distance above is no more than half the difference between the distance between the upper and lower sides of the notch 5 and the distance between the upper and lower sides of the second rib 7.

[0052] Preferred, such as Figure 5 , Figure 7 , Figure 14 As shown, a groove 253 is recessed on the bottom surface of the horizontal part of the tray 25. The width of the groove 253 is greater than the width of the first rib 3. In use, one side of the groove 253 abuts against one side of the outermost first rib 3 below the partition 4 to facilitate accurate positioning of the partition 4.

[0053] like Figures 2-4 As shown, the web plate loading assembly 30 is located outside the second side plate 112, and a set is symmetrically arranged on both sides of the plane where the short axis of the crossbeam 21 and the long axis of the second conveying roller 13 are located. Support platforms 34 are provided on the outside of the two web plate loading assemblies 30, and mounting plates 341 are vertically provided on the side of the support platform 34 facing the web plate loading assembly 30.

[0054] like Figure 2 , Figure 3 As shown, the web plate feeding assembly 30 includes a conveyor belt 31, a rotating component 32, and an ejector component 33. The conveyor belt 31 is arranged parallel to the conveying direction of the first conveyor roller 11, and the conveying direction of the conveyor belt 31 is towards the plane where the short axis of the crossbeam 21 and the long axis of the second conveyor roller 13 are located. It is used to convey the web plate 6. During conveying, the side of the web plate 6 with the second rib 7 is facing upward, and the length direction of the second rib 7 is perpendicular to the conveying direction of the conveyor belt 31.

[0055] like Figure 3As shown, the rotating component 32 includes a rotating shaft 321, a U-shaped plate 322, a first motor 323, and a roller 324. The first motor 323 is mounted on the support platform 34. One end of the rotating shaft 321 passes through the mounting plate 341 and is coaxially connected to the output end of the first motor 323. The other end of the rotating shaft 321 is rotatably connected to the outer side of the second side plate 112. Both ends of the rotating shaft 321 are respectively provided with circular plates coaxially. Four U-shaped plates 322 are arranged in a circumferential array along the circumference of the circular plates, and the opening direction of the U-shaped plates 322 faces outward. They are used to receive the web plate 6 at the end of the conveyor belt 31 in the conveying direction. When one end of the web plate 6 abuts against the horizontal part of the U-shaped plate 322, the first motor 323 is started so that the first motor 323 rotates upward by 90°, thereby driving the corresponding web plate 6 to rotate from a horizontal state to a vertical state.

[0056] Preferred, such as Figures 5-6 As shown, in order to facilitate the entry of the web plate 6 into the U-shaped plate 322, the upper ends of the opening of the U-shaped plate 322 are symmetrically provided with second inclined surfaces on both sides, so that the upper end of the opening of the U-shaped plate 322 is flared.

[0057] The roller 324 is located in the recess of the U-shaped plate 322, and its axial direction is parallel to the width direction of the horizontal part of the U-shaped plate 322. The upper side of the roller 324 is projected in the direction of the second side plate 112 and is flush with the top surface of the second side plate 112.

[0058] like Figure 3 As shown, a sealing plate 325 is provided vertically at the end of the U-shaped plate 322 away from the first conveying roller 11 to prevent the web plate 6 from entering the U-shaped plate 322 and then sliding outward along the length of the U-shaped plate 322 to interfere with the mounting plate 341, thus causing feeding failure.

[0059] like Figure 3 As shown, the top surface of the mounting plate 341 is provided with an outwardly extending extension plate, and the bottom surface of the extension plate is provided with a vertical reinforcing rib. The pusher 33 is provided on the extension plate. The pusher 33 includes a first cylinder 331, a horizontal plate 332, and a pusher 333. The output shaft of the first cylinder 331 faces the direction of the second side plate 112, and the axis of the output shaft of the first cylinder 331 corresponds to the plane where the short axis of the crossbeam 21 and the long axis of the second conveying roller 13 are located. The length direction of the horizontal plate 332 is consistent with the length direction of the conveyor belt 31, and the horizontal plate 332 is perpendicular to the output end of the first cylinder 331. The two ends of the horizontal plate 332 are respectively provided with horizontal extension rods, and the pusher 333 is vertically provided at the outer end of the extension rods.

[0060] like Figure 11 As shown, the width of the push plate 333 is smaller than the opening width of the U-shaped plate 322, and the projection of the horizontal plate 332 on the cross section of the distribution trajectory of the U-shaped plate 322 is located outside the distribution trajectory of the U-shaped plate 322, so as to avoid interference between the horizontal plate 332 and the U-shaped plate 322 when the horizontal plate 332 moves along the length direction of the U-shaped plate 322.

[0061] When in use, the first cylinder 331 is activated, causing the horizontal plate 332 to simultaneously push the two push plates 333, which in turn push the two vertical web plates 6 inside the U-shaped plate 322 corresponding to the two rotating parts 32 to the two ends of the partition plate 4.

[0062] like Figure 2 As shown, the welding assembly 40 is provided in two sets, including a six-axis robotic arm 41 that is slidably connected to the outside of the longitudinal beam 22. The outside of the longitudinal beam 22 is provided with a guide rail, and a guide seat is slidably provided on the guide rail. The guide seat is connected to the six-axis robotic arm 41, and a welding torch 42 is provided at its movable end.

[0063] The movement of the guide seat can be achieved by setting a rack along the length of the guide rail, setting a gear inside the guide seat that meshes with the rack, and connecting the gear coaxially to a drive motor.

[0064] The specific usage process is as follows: Based on the length of the partition 4, the second motor is started to adjust the distance between the two longitudinal beams 22 so that the distance between the horizontal portions of the support plates 25 on both sides below the short axis of the crossbeam 21 is consistent with the length of the partition 4.

[0065] The steel box girder body 1 is placed upside down on the first conveying roller 11 for conveying. When the foremost steel box girder body 1 on the conveying side of the first conveying roller 11 comes into contact with the blocking plate 12, the telescopic rod 23 is activated, causing the telescopic rod 23 to move vertically downwards so that the horizontal part of the support plate 25 comes into contact with the upward-facing side of the top plate 2. Figure 2 , Figure 9 As shown, the third motor is started, which drives the second bidirectional screw to rotate, thereby bringing the clamping parts of the same set of bidirectional threads on the second bidirectional screw closer to each other, so that the vertical parts of the corresponding support plate 25 act on the two sides of the end of the partition plate 4 respectively, so as to avoid the partition plate 4 bending and deforming when the web plate 6 enters, and at the same time improve the rigidity near the notch 5.

[0066] The web plate 6, with the side having the second rib 7 facing upwards, is placed on the conveyor belt 31 for conveying, and the length direction of the second rib 7 is perpendicular to the length direction of the conveyor belt 31. The first motor 323 is started, driving the rotating shaft 321 to rotate so that the opening of one of the U-shaped plates 322 faces the conveying direction of the conveyor belt 31. This allows the foremost web plate 6 in the conveying direction of the conveyor belt 31 to enter the corresponding U-shaped plate 322. When the web plate 6 enters the U-shaped plate 322 and abuts against the roller 324, the first motor 323 is started again, driving the rotating shaft 321 to rotate 90°, thus rotating the web plate 6 from a horizontal state to a vertical state. The next U-shaped plate 322 then corresponds to the conveying direction of the conveyor belt 31, allowing the next web plate 6 to enter the U-shaped plate 322, thereby shortening the interval time and improving efficiency.

[0067] like Figures 9-10As shown, when the web plate 6 is in a vertical position, the first cylinder 331 is activated, causing the first cylinder 331 to push the horizontal plate 332 to move along the top surface of the vertical U-shaped plate 322, thereby causing the push plate 333 to simultaneously push the two web plates 6 to the two ends of the partition plate 4 respectively.

[0068] During the pushing process, the front end of the second rib 7 moves past the sleeve 252 corresponding to the support plate 25 below the same longitudinal beam 22 one by one. When the front end of the web plate 6 moves into contact with the first side plate 111, the first cylinder 331 stops, and then the second cylinder 241 is started, so that the second cylinder 241 pulls the limiting plate 26, so that the limiting plate 26 pushes the outer side of the web plate 6, thereby making the web plate 6 and the end of the partition plate 4 fit tightly.

[0069] The six-axis robotic arm 41 is activated so that the welding torch 42 welds the joint between the web plate 6 and the top plate 2 and the joint between the upper side of the web plate 6 and the upper side of the partition plate 4, so that the web plate 6 is welded and positioned.

[0070] like Figure 13 As shown, after welding is completed, the telescopic rod 23 is retracted, and the first cylinder 331 enters the return stroke. The reversing output component 14 is activated, causing the reversing output component 14 to move vertically upward, thereby lifting the welded steel box girder body 1 vertically upward. The third conveying roller 141 is activated to output the lifted steel box girder body 1 onto the second conveying roller 13.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to be the only or limiting of the invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from its scope are all within the protection scope of the present invention.

Claims

1. A welding device for the web plate of a steel box girder, characterized in that, include: The main body conveying assembly (10) includes a first conveying roller (11) for conveying the steel box girder body (1) and a second conveying roller (13) vertically disposed on one side of the end of its conveying direction. The first conveying roller (11) has a clearance hole at the end of its conveying direction, and a reversing output component (14) is vertically inserted inside it. A blocking plate (12) is provided at the outer end of the clearance hole. The clamping assembly (20) includes a crossbeam (21) parallel to the end of the first conveying roller (11) in the conveying direction, the short axis of which is coplanar with the long axis of the second conveying roller (13). A set of longitudinal beams (22) are provided at both ends of the crossbeam (21) in both directions. Two sets of clamping members are provided at both ends of the longitudinal beams (22). The clamping members are provided in both directions along the length of the longitudinal beams (22). The clamping members include a vertically arranged telescopic rod (23). Its movable end is connected to a mounting base (24) whose length direction is parallel to the conveying direction of the first conveying roller (11). One end of the mounting base (24) has an L-shaped support plate (25) with the inner right angle facing outward. The other end is provided with a limiting plate (26) that is parallel to the vertical part of the support plate (25). The web plate feeding assembly (30) is located on the other side of the first conveyor roller (11) and is symmetrically arranged on both sides of the plane where the short axis of the crossbeam (21) and the long axis of the second conveyor roller (13) are located. It includes a conveyor belt (31) for conveying the web plate (6), and a rotating part (32) is provided at the end of its conveying direction and rotatably connected to the other side of the first conveyor roller (11) for receiving the web plate (6) and rotating the web plate (6) vertically upward by 90°. The two rotating parts (32) are provided with push-out parts (33) on the outside of the two rotating parts (32) for pushing out the web plate (6) on the two rotating parts (32). Welding assembly (40) is provided in two parts, including a six-axis robotic arm (41) that moves outward along the length of the longitudinal beam (22), and a welding gun (42) at its output end, used for welding the joint between the web plate (6) and the top plate (2) and the joint between the upper side of the partition plate (4) and the upper side of the web plate (6).

2. The steel box girder web welding device according to claim 1, characterized in that, The first conveying roller (11) has a first side plate (111) on the side facing the second conveying roller (13), and its top surface height is greater than the thickness of the top plate (2) of the steel box girder body (1). The other side of the first conveying roller (11) has a second side plate (112) parallel to the first side plate (111), and the top surface height of the second side plate (112) is consistent with the thickness of the top plate (2) of the steel box girder body (1).

3. The steel box girder web welding device according to claim 1, characterized in that, The top surface of the reversing output component (14) is provided with two sets of parallel and spaced third conveying rollers (141), whose conveying direction is perpendicular to the conveying direction of the first conveying roller (11).

4. The steel box girder web welding device according to claim 1, characterized in that, One end of the mounting base (24) is provided with a second cylinder (241), the output end of which passes through the mounting base (24) and is connected to the limiting plate (26). All mounting bases (24) have a first inclined surface (242) on the side of their bottom surface facing the rotating part (32).

5. The steel box girder web welding device according to claim 1, characterized in that, The vertical part of the support plate (25) facing the limiting plate (26) is provided with multiple rows of T-shaped nails (251), the number of rows is the same as the number of notches (5) at both ends of the partition plate (4). The vertical part of the T-shaped nails (251) is fitted with sleeves (252). When the lower end of the support plate (25) abuts against the top plate (2), the upper side of each row of sleeves (252) is projected higher than the lower side of the corresponding row of notches (5) in the direction of the notch (5). The distance of the higher side is less than half the distance difference between the two sides of the second rib (7) on one side of the web plate (6) and the upper and lower sides of the notch (5).

6. The steel box girder web welding device according to claim 5, characterized in that, The bottom surface of the horizontal part of the tray (25) is recessed and has a slot (253).

7. The steel box girder web welding device according to claim 1, characterized in that, The two rotating parts (32) are provided with a support platform (34) on the outside. A mounting plate (341) is provided vertically on one side of the support platform (34). The rotating part (32) includes a rotating shaft (321) with one end rotatably connected to the other side of the first conveying roller (11). Circular plates are provided at both ends of the shaft. U-shaped plates (322) are arranged in a circumferential array along the circumference of the circular plates. The two ends of the U-shaped plates (322) are respectively connected to the circular plates. The two sides of the opening of the U-shaped plates (322) are respectively provided with second inclined surfaces. The outer end of the rotating shaft (321) passes through the mounting plate (341) and is provided with a first motor (323).

8. The steel box girder web welding device according to claim 7, characterized in that, The U-shaped plate (322) has a roller (324) rotating in the recess. When the opening of the U-shaped plate (322) is vertically upward, the projection of the upper side of the roller (324) in the direction of the first conveying roller (11) is flush with the upward-facing side of the top plate (2).

9. The steel box girder web welding device according to claim 7, characterized in that, The ejector (33) includes a first cylinder (331) located on the top surface of the mounting plate (341), and a horizontal plate (332) is provided at its output end. The projection of the horizontal plate (332) in the direction of the U-shaped plate (322) falls outside the distribution trajectory of the U-shaped plate (322). Push plates (333) are provided vertically at both ends of the horizontal plate (332), and the width of the push plate (333) is smaller than the opening width of the U-shaped plate (322).

10. The steel box girder web welding device according to claim 7, characterized in that, A sealing plate (325) is provided at one end of the U-shaped plate (322) away from the first conveying roller (11), and the height of the sealing plate (325) is less than half the length of the vertical part of the U-shaped plate (322).

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