A bridge expansion joint welding fixing device with a limiting mechanism

Abstract

The present invention belongs to the technical field of bridge expansion joint welding, and in particular to a bridge expansion joint welding fixing device with a limiting mechanism, comprising a welding seat, a processing seat fixed on the surface of the welding seat, and bridge expansion joint steel sections abutting on both sides of the processing seat surface, and a limiting component is installed on the surface of the welding seat. The device is provided with a limiting component, which can effectively limit the position of the bridge expansion joint steel section, ensure that the bridge expansion joint steel section maintains a stable state during the welding process, is beneficial to improving the welding quality, and reduces welding defects caused by the position offset of the bridge expansion joint steel section, and reduces collisions or damages caused by the displacement of the bridge expansion joint steel section. At the same time, the downward pressure limit of the bridge expansion joint steel section by the lower pressure plates at the four corners can apply limiting force to the bridge expansion joint steel section from multiple directions, thereby enhancing the overall limiting effect, so that the steel section can better resist external force interference during the welding process, and ensure smooth welding.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge expansion joint welding, and in particular relates to a bridge expansion joint welding fixing device with a limiting mechanism. Background Art

[0002] Bridge expansion joints refer to expansion joints that are usually set between the two beam ends, between the beam ends and the abutments, or at the hinged positions of the bridge to meet the requirements of bridge deck deformation. The expansion joints are required to be able to freely expand and contract in two directions parallel and perpendicular to the bridge axis, and to be firm and reliable. Vehicles should be smooth, without sudden jumps and noise when driving. In bridge construction and maintenance projects, the welding of bridge expansion joint steel is a key process. High-quality welding is essential to ensure the structural stability and service life of bridge expansion joints. Although the existing welding fixtures in life have met the needs of users to a certain extent, there are still certain defects in the use process. The specific problems are as follows: when welding bridge expansion joints, due to the lack of an effective limiting mechanism, the expansion joint steel is prone to position displacement due to external interference during the welding process. This position displacement will lead to serious welding defects, such as uneven welds and discontinuous welding, which seriously affect the welding quality. The traditional steel limiting method mostly relies on manual adjustment, which is not only inefficient, but also difficult to ensure the consistency of the limiting accuracy of each welding workpiece by manual operation, and is prone to errors, which in turn affects the stability of the welding quality and leads to uneven steel limiting effects.

[0003] In order to solve the above problems, the present application proposes a bridge expansion joint welding fixing device with a limiting mechanism. Summary of the invention

[0004] The present invention provides a bridge expansion joint welding fixing device with a limiting mechanism, which can effectively solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge expansion joint welding fixing device with a limiting mechanism, comprising a welding seat, a processing seat fixed on the surface of the welding seat, and bridge expansion joint steels abutting on both sides of the processing seat surface;

[0006] The surface of the welding seat is installed with a limit assembly, and the limit assembly includes a driving motor connected by screws on both sides of the lower surface of the welding seat, a driving gear fixed at the output end of the driving motor, and an extrusion rack meshingly connected to both sides of the surface of the driving gear. The two groups of extrusion racks are arranged symmetrically about the driving gear, and one end of the two groups of extrusion racks is respectively fixed with a moving seat, the surface of the moving seat is slidably connected with an extrusion plate, the surface of the moving seat is fixed with a positioning rod, the surface of the positioning rod is slidably connected with a lower pressure plate, and both ends of the processing seat are hinged to the limit plates through hinges.

[0007] As a preferred bridge expansion joint welding fixing device with a limiting mechanism of the present invention, a movable rail is fixed to the surface of the welding seat, and the movable seat is slidably connected to the surface of the movable rail, a spring is fixed between the extrusion plate and the movable seat, a pushing rack is fixed to one side of the extrusion plate, a positioning frame is fixed to the surface of the movable seat, and the pushing rack is slidably connected to the inside of the positioning frame, a pushing gear is meshedly connected to the surface of the pushing rack, a transmission shaft is fixed to the inside of the pushing gear, and the transmission shaft is rotatably connected to the surface of the movable seat through a bearing frame.

[0008] As a preferred bridge expansion joint welding fixing device with a limiting mechanism of the present invention, a bevel gear pair 1 is fixed to one end of the transmission shaft, a threaded rod is coaxially fixed inside the bevel gear of the bevel gear pair 1, the threaded rod is rotatably connected to the surface of the movable seat through a bearing frame 2, a threaded block is threadedly connected to the surface of the movable seat, and the threaded block is slidably connected to the surface of the movable seat, and a movable hinge is hinged between the lower pressure plate and the threaded block.

[0009] As a preferred bridge expansion joint welding fixing device with a limiting mechanism of the present invention, a fixing plate is fixed to the side of the welding seat surface close to the limiting plate, the surface of the fixing plate is rotatably connected to a flip shaft through a bearing frame, a flip frame is fixed to the surface of the flip shaft, one end of the flip frame is rotatably connected to a pushing wheel, and the surface of the pushing wheel is in contact with the surface of the limiting plate.

[0010] As a preferred bridge expansion joint welding fixing device with a limiting mechanism of the present invention, a driven gear is fixed to the middle part of the surface of the flip shaft, and the surface of the driven gear is meshed and connected with a driving gear, and a driven shaft is fixed inside the driving gear, and the driven shaft is rotatably connected to the surface of the processing seat through a bearing frame four, and bevel gear pairs are symmetrically fixed at both ends of the surface of the driven shaft, and driving shafts are coaxially fixed in the bevel gears of the two groups of bevel gear pairs, and the driving shaft is rotatably connected to the surface of the fixed plate, and the surface of the driving shaft is connected to a synchronous belt through a pulley, and one end of the synchronous belt is connected to a rotating shaft through a pulley, and the rotating shaft is rotatably connected to the surface of the welding seat, and a mobile gear is fixed to the top surface of the rotating shaft, and the surface of the mobile gear is meshed and connected with a mobile rack, and the mobile rack and the mobile seat are fixedly connected.

[0011] As a preferred bridge expansion joint welding fixing device with a limiting mechanism of the present invention, a welding assembly is installed on the surface of the welding seat, and the welding assembly includes a transverse screw slide fixed on the surface of the welding seat, a lifting screw slide fixed on the moving end of the transverse screw slide, and a longitudinal screw slide fixed on the moving end of the lifting screw slide, and a welding machine is fixed on the moving end of the longitudinal screw slide.

[0012] As a preferred bridge expansion joint welding fixing device with a limiting mechanism of the present invention, a clamping seat is fixed on the surface of the welding machine, and two groups of symmetrically arranged clamping arms are hinged inside the clamping seat, and fixing columns are symmetrically fixed on the surfaces of the two groups of clamping arms, a tension spring is fixed between the two groups of fixing columns, and a clamping plate is fixed to the opposite end of the two groups of clamping seats.

[0013] As a preferred bridge expansion joint welding fixing device with a limiting mechanism of the present invention, a replacement component is installed on the surface of the longitudinal moving screw slide, and the replacement component includes a fixing frame fixed to the upper surface of one end of the longitudinal moving screw slide away from the lifting screw slide, a feeding rack fixed on the surface of the fixing frame, and an electric telescopic rod hinged inside the fixing frame, the output end of the electric telescopic rod is hinged with a pushing slider, and the pushing slider is slidably connected to a sliding groove opened inside the feeding rack through a pulley, two groups of push-pull telescopic rods are fixed on the surface of the pushing slider, an electric clamp is fixed between the output ends of the two groups of push-pull telescopic rods, a rotating seat is fixed on the surface of the fixing frame, a replacement material tray is rotatably connected to the surface of the rotating seat, and a plurality of groups of plug-in slots are opened on the surface of the replacement material tray in a ring array.

[0014] As a preferred bridge expansion joint welding fixing device with a limiting mechanism of the present invention, a toggle rod is fixed to the surface of the pushing slider, and a push-pull rack is slidably connected to the surface of the feeding rack through a sliding seat, a blocking rod is fixed to the side of the push-pull rack surface close to the toggle rod, and two tension springs are fixed between the blocking rod and the feeding rack, the surface of the push-pull rack is meshingly connected to a push-pull gear, the interior of the push-pull gear is connected to a rotating shaft, and a plurality of ratchet pawls arranged in a ring are hinged on the surface of the rotating shaft, a ratchet groove matching the ratchet is provided inside the push-pull gear, and two springs are fixed between the ratchet pawl and the rotating shaft.

[0015] As a preferred bridge expansion joint welding fixing device with a limiting mechanism of the present invention, the rotating shaft is rotatably connected to the inside of the feeding rack, and a bevel gear pair three is fixed to the end of the rotating shaft away from the push-pull gear, and a driving shaft is coaxially fixed inside the bevel gear of the bevel gear pair three, the driving shaft is rotatably connected to the inside of the fixing rack, and a rotating disk is fixed to one end of the driving shaft, an eccentric shifting rod is fixed to the surface of the rotating disk, and a plurality of groups of switching shifting grooves in a circular array are opened inside the replacement material tray.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0017] 1. Setting a limit assembly can effectively limit the position of the bridge expansion joint steel, ensure that the bridge expansion joint steel remains in a stable state during the welding process, which is beneficial to improving the welding quality, reducing welding defects caused by the position offset of the bridge expansion joint steel, and reducing the collision or damage to the welding equipment caused by the displacement of the bridge expansion joint steel. At the same time, by limiting the downward pressure of the bridge expansion joint steel at the four corners, the limit force can be applied to the bridge expansion joint steel from multiple directions, thereby enhancing the overall limiting effect, so that the steel can better resist external force interference during welding and ensure smooth welding.

[0018] By setting the limit plate, the expansion joint steel of the bridge can be further limited from the side, thereby further improving the position stability of the expansion joint steel of the bridge during the welding process. The stable limitation ensures that the relative position between the welding rod and the expansion joint steel of the bridge is always consistent during the welding process, and the weld is more uniform and beautiful. At the same time, it reduces the welding interruption and readjustment caused by the shaking or displacement of the expansion joint steel of the bridge, effectively improves the continuity and quality of welding, and compared with the traditional manual adjustment and limiting methods, the operation is simple and efficient, which greatly saves time and labor costs, improves work efficiency, and also reduces the errors that may be caused by manual operation, thereby ensuring the limiting accuracy of each welding workpiece.

[0019] 2. A welding assembly is provided to clamp the welding materials and prepare for welding operation. Then, the welding machine is started to start welding the expansion joint steel of the bridge. During the welding process, the position of the welding machine is adjusted by controlling the transverse screw slide, the lifting screw slide and the longitudinal screw slide as needed to ensure the welding quality and continuity.

[0020] 3. A replacement component is provided to automatically replace welding materials without manual replacement, so that operators do not need to frequently manually replace materials in a complex welding equipment environment, reducing labor intensity. It not only greatly saves time, but also effectively improves the speed of replacing welding materials, thereby improving overall work efficiency, but also avoids improper installation of welding materials due to human operating errors, thereby ensuring the stability of welding quality, and improving equipment safety, reducing the chance of direct human contact with welding equipment and materials, reducing safety risks such as electric shock and burns caused by misoperation, and ensuring the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 It is a structural schematic diagram of the limiting component in the present invention;

[0025] Figure 4 It is a schematic diagram of the local structure of the limiting component in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the movable seat and the limiting plate in the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the fixed plate and the extrusion and pushing wheel in the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the extrusion plate and the lower pressing plate in the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the welding assembly and the replacement assembly in the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the welding machine and the clamping arm in the present invention;

[0031] Fig.10 The structure diagram of the replacement component in the present invention is shown in FIG. Figure 1 ;

[0032] Fig.11 The structure diagram of the replacement component in the present invention is shown in FIG. Figure 2 ;

[0033] Fig.12 It is a partial structural schematic diagram of a replacement component in the present invention;

[0034] Fig.13 It is a cross-sectional view of the push-pull gear in the present invention;

[0035] Fig.14 It is a cross-sectional view of the rotating seat and the replacement tray in the present invention.

[0036] In the figure: 1. welding seat; 2. processing seat; 3. bridge expansion joint steel; 4. limit assembly; 41. driving motor; 42. driving gear; 43. extrusion rack; 44. moving seat; 45. moving rail; 46. extrusion plate; 47. spring one; 48. extrusion rack; 49. positioning frame; 410. extrusion gear; 411. transmission shaft; 412. bevel gear pair one; 413. threaded rod; 414. threaded block; 415. movable hinge rod; 416. lower pressure plate; 417. positioning rod; 418. moving rack; 419. moving gear; 420. synchronous belt; 421. fixed plate; 422. driving shaft; 423. bevel gear pair two; 424. driven shaft; 425. driving gear; 426. driven gear; 427. flip shaft; 428. flip frame; 429. extrusion wheel; 430, limit plate; 5, welding assembly; 51, horizontal screw slide; 52, lifting screw slide; 53, vertical screw slide; 54, welding machine; 55, clamp seat; 56, clamp arm; 57, fixed column; 58, tension spring 1; 59, clamp plate; 6, replacement assembly; 61, fixed frame; 62, feeding frame; 63, electric telescopic rod; 64, push slider; 65, toggle rod; 66, blocking rod ; 67. Push-pull rack; 68. Push-pull gear; 69. Rotating shaft; 610. Ratchet; 611. Spring 2; 612. Bevel gear pair 3; 613. Driving shaft; 614. Rotating disk; 615. Eccentric lever; 616. Rotating seat; 617. Replacing material tray; 618. Switching slot; 619. Plug-in slot; 620. Push-pull telescopic rod; 621. Electric clamp; 622. Tension spring 2. DETAILED DESCRIPTION

[0037] 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.

[0038] Example: Figure 1 - Fig.14 As shown, the present invention provides a technical solution, a bridge expansion joint welding fixing device with a limiting mechanism, comprising a welding seat 1, a processing seat 2 fixed on the surface of the welding seat 1, and a bridge expansion joint steel 3 abutting on both sides of the surface of the processing seat 2;

[0039] The surface of the welding seat 1 is mounted with a limit assembly 4, which includes a driving motor 41, a driving gear 42, an extrusion rack 43, a moving seat 44, a moving rail 45, an extrusion plate 46, a spring 1 47, an extrusion rack 48, a positioning frame 49, an extrusion gear 410, a transmission shaft 411, a bevel gear pair 1 412, a threaded rod 413, a threaded block 414, a movable hinge rod 415, a lower pressure plate 416, a positioning rod 417, a moving rack 418, a moving gear 419, a synchronous belt 420, a fixed plate 421, a driving shaft 422, a bevel gear pair 2 423, a driven shaft 424, a driving gear 425, a driven gear 426, a flip shaft 427, a flip frame 428, an extrusion wheel 429 and a limit plate 430;

[0040] The lower surface of the welding seat 1 is symmetrically screwed with a driving motor 41 on both sides, a driving gear 42 is fixed to the output end of the driving motor 41, and extrusion racks 43 are meshed and connected on both sides of the surface of the driving gear 42. The two groups of extrusion racks 43 are arranged symmetrically about the driving gear 42, and one end of the two groups of extrusion racks 43 is respectively fixed with a moving seat 44, a moving rail 45 is fixed to the surface of the welding seat 1, and the moving seat 44 is slidably connected to the surface of the moving rail 45, and the inside of the moving seat 44 is slidably connected with an extrusion plate 46 through a moving groove, a spring 47 is fixed between the extrusion plate 46 and the moving seat 44, a pushing rack 48 is fixed to one side of the extrusion plate 46, and a positioning frame 4 is fixed on the surface of the moving seat 44 9, and the pushing rack 48 is slidably connected to the inside of the positioning frame 49, the surface of the pushing rack 48 is meshed with the pushing gear 410, the inside of the pushing gear 410 is fixed with a transmission shaft 411, the transmission shaft 411 is rotatably connected to the surface of the moving seat 44 through a bearing frame 1, one end of the transmission shaft 411 is fixed with a bevel gear pair 1 412, the bevel gear of the bevel gear pair 1 412 is coaxially fixed with a threaded rod 413, the threaded rod 413 is rotatably connected to the surface of the moving seat 44 through a bearing frame 2, the surface of the threaded rod 413 is threadedly connected with a threaded block 414, and the threaded block 414 is slidably connected to the surface of the moving seat 44, the surface of the moving seat 44 is fixed with a positioning rod 417, the surface of the positioning rod 417 A lower pressure plate 416 is slidably connected, and a movable hinge 415 is hinged between the lower pressure plate 416 and the threaded block 414. Both ends of the processing seat 2 are hinged to the limit plate 430 through hinges. A fixed plate 421 is fixed to the side of the welding seat 1 surface close to the limit plate 430. The surface of the fixed plate 421 is rotatably connected to a flip shaft 427 through a bearing frame. A flip frame 428 is fixed to the surface of the flip shaft 427. One end of the flip frame 428 is rotatably connected to a pushing wheel 429, and the surface of the pushing wheel 429 is in contact with the surface of the limit plate 430. A driven gear 426 is fixed to the middle of the surface of the flip shaft 427. The surface of the driven gear 426 is meshed with a driving gear 425. The inner surface of the driving gear 425 A driven shaft 424 is fixed to the part, and the driven shaft 424 is rotatably connected to the surface of the processing seat 2 through a bearing frame 4, and bevel gear pairs 423 are symmetrically fixed at both ends of the surface of the driven shaft 424. A driving shaft 422 is coaxially fixed in the bevel gears of the two sets of bevel gear pairs 423, and the driving shaft 422 is rotatably connected to the surface of the fixed plate 421, and the surface of the driving shaft 422 is connected to a synchronous belt 420 through a pulley, and one end of the synchronous belt 420 is connected to a rotating shaft through a pulley, and the rotating shaft is rotatably connected to the surface of the welding seat 1, and a moving gear 419 is fixed to the top surface of the rotating shaft, and a moving rack 418 is meshed and connected to the surface of the moving gear 419, and the moving rack 418 is fixedly connected to the moving seat 44.

[0041] The surface of the welding seat 1 is provided with a welding assembly 5, which includes a transverse screw slide 51, a lifting screw slide 52, a longitudinal screw slide 53, a welding machine 54, a clamp seat 55, a clamp arm 56, a fixing column 57, a tension spring 58 and a clamp plate 59;

[0042] A transverse screw slide 51 is fixed to the surface of the welding seat 1, a lifting screw slide 52 is fixed to the movable end of the transverse screw slide 51, a longitudinal screw slide 53 is fixed to the movable end of the lifting screw slide 52, a welding machine 54 is fixed to the movable end of the longitudinal screw slide 53, a clamping seat 55 is fixed to the surface of the welding machine 54, two groups of symmetrically arranged clamping arms 56 are hinged inside the clamping seat 55, fixed columns 57 are symmetrically fixed to the surfaces of the two groups of clamping arms 56, a tension spring 58 is fixed between the two groups of fixed columns 57, and a clamping plate 59 is fixed to the opposite end of the two groups of clamping seats 55.

[0043] A replacement assembly 6 is installed on the surface of the longitudinal screw slide 53, and the replacement assembly 6 includes a fixed frame 61, a feeding frame 62, an electric telescopic rod 63, a push slider 64, a toggle rod 65, a blocking rod 66, a push-pull rack 67, a push-pull gear 68, a rotating shaft 69, a ratchet 610, a second spring 611, a third bevel gear pair 612, a driving shaft 613, a rotating disk 614, an eccentric toggle rod 615, a rotating seat 616, a replacement material tray 617, a switching toggle slot 618, a plug-in slot 619, a push-pull telescopic rod 620, an electric clamp 621 and a second tension spring 622;

[0044] A fixing frame 61 is fixed on the upper surface of one end of the longitudinal screw slide 53 away from the lifting screw slide 52, a feeding rack 62 is fixed on the surface of the fixing frame 61, an electric telescopic rod 63 is hinged inside the fixing frame 61, a push slider 64 is hinged on the output end of the electric telescopic rod 63, and the push slider 64 is slidably connected to the sliding groove opened inside the feeding rack 62 through a pulley, a toggle rod 65 is fixed on the surface of the push slider 64, and a push-pull rack 67 is slidably connected to the surface of the feeding rack 62 through a slide seat. A blocking rod 66 is fixed on the side of the rack 67 near the toggle rod 65, and a tension spring 622 is fixed between the blocking rod 66 and the feeding rack 62. The surface of the push-pull rack 67 is meshed with a push-pull gear 68, and the inside of the push-pull gear 68 is connected to a rotating shaft 69. The surface of the rotating shaft 69 is hinged with a plurality of ratchet pawls 610 arranged in a ring. The inside of the push-pull gear 68 is provided with a ratchet groove adapted to the ratchet pawl 610, and a spring 611 is fixed between the ratchet pawl 610 and the rotating shaft 69. 9 is rotatably connected to the inside of the feeding frame 62, and a bevel gear pair 3 612 is fixed to the end of the rotating shaft 69 away from the push-pull gear 68, a driving shaft 613 is coaxially fixed inside the bevel gear of the bevel gear pair 3 612, the driving shaft 613 is rotatably connected to the inside of the fixed frame 61, and a rotating disk 614 is fixed to one end of the driving shaft 613, a rotating seat 616 is fixed to the side of the surface of the fixed frame 61 close to the rotating disk 614, and the driving shaft 613 is rotatably connected to the rotating seat 616, and the surface of the rotating seat 616 is rotated. A replacement material tray 617 is connected, an eccentric lever 615 is fixed on the surface of the rotating disk 614, and a plurality of switching slots 618 in a circular array are provided inside the replacement material tray 617, the switching slots 618 are matched with the eccentric lever 615, and a ring-shaped array is provided on the surface of the replacement material tray 617 with the same number of plug-in slots 619 as the switching slots 618, and two groups of push-pull telescopic rods 620 are fixed on the surface of the pushing slider 64, and an electric clamp 621 is fixed between the output ends of the two groups of push-pull telescopic rods 620.

[0045] When welding processing is required for the bridge expansion joint steel 3, firstly, two groups of bridge expansion joint steel 3 are placed against the two sides of the surface of the processing seat 2, and the drive motor 41 is started. The output end of the drive motor 41 drives the drive gear 42 to rotate. Since the drive gear 42 is meshed and connected with the extrusion racks 43 on both sides, and the two groups of extrusion racks 43 are arranged symmetrically about the drive gear 42, the rotation of the drive gear 42 will cause the two groups of extrusion racks 43 to move in opposite directions, thereby driving the two groups of moving seats 44 to slide on the surface of the moving rail 45 respectively, and approach the surface of the bridge expansion joint steel 3. As the moving seat 44 moves, when the surface of the extrusion plate 46 contacts the surface of the bridge expansion joint steel 3, it can squeeze the spring 47 to deform and generate elastic force, and make the extrusion rack 48 slide in the positioning frame 49 (such as Figure 7As shown), the pushing gear 410 and the transmission shaft 411 can be driven to rotate on the surface of the moving seat 44, and then the threaded rod 413 can be driven to rotate on the surface of the moving seat 44 with the cooperation of the bevel gear pair 412, so that the threaded block 414 can move on the threaded rod 413, and then the movement of the threaded block 414 drives the lower pressure plate 416 to slide along the positioning rod 417 through the movable hinge rod 415, so as to limit the downward pressure of the bridge expansion joint steel 3 (as shown in FIG. Figure 4 As shown), by the extrusion limit of the extrusion plate 46 on both sides of the bridge expansion joint steel 3, the accuracy of the position of the bridge expansion joint steel 3 can be effectively limited, ensuring that the bridge expansion joint steel 3 maintains a stable state during the welding process, which is beneficial to improving the welding quality, reducing welding defects caused by the position offset of the bridge expansion joint steel 3, and reducing the collision or damage to the welding equipment caused by the displacement of the bridge expansion joint steel 3. At the same time, by the downward pressure limit of the lower pressure plate 416 at the four corners on the bridge expansion joint steel 3, a limiting force can be applied to the bridge expansion joint steel 3 from multiple directions, thereby enhancing the overall limiting effect, so that the steel can better resist external force interference during welding, and ensure smooth welding.

[0046] Furthermore, as the moving seat 44 moves on the surface of the moving rail 45, it can drive the moving rack 418 to move synchronously, and then drive the moving gear 419 to rotate on the surface of the welding seat 1 through the rotating shaft, and then, with the cooperation of the synchronous belt 420, it can drive the driving shaft 422 and the bevel gear pair 2 423 to operate on the surface of the fixed plate 421, and then drive the driven shaft 424 and the driving gear 425 to rotate on one side of the processing seat 2, and then the rotation of the driving gear 425 can drive the driven gear 426 and the flip shaft 427 to rotate on the surface of the fixed plate 421, and then drive the flip frame 428 and the pushing wheel 429 to push the limiting plate 430 to flip on the surface of the processing seat 2, and approach the side of the bridge expansion joint profile steel 3 until it fits on the side of the bridge expansion joint profile steel 3, so that the bridge expansion joint profile steel 3 can be further limited from the side (such as Figure 4 As shown in the figure), the position stability of the bridge expansion joint steel 3 during the welding process is further improved. The stable limiting process ensures that the relative position between the welding rod and the bridge expansion joint steel 3 is always consistent during the welding process, and the weld is more evenly formed and beautiful. At the same time, the welding interruption and readjustment caused by the shaking or displacement of the bridge expansion joint steel 3 are reduced, which effectively improves the continuity and quality of welding. Compared with the traditional manual adjustment and limiting methods, the operation is simple and efficient, which greatly saves time and labor costs, improves work efficiency, and also reduces the errors that may be caused by manual operation, ensuring the limiting accuracy of each welding workpiece.

[0047] After completing the limiting and fixing of the bridge expansion joint steel 3, by starting the transverse screw slide 51, the lifting screw slide 52 and the longitudinal screw slide 53, the welding machine 54 can be driven to move, so that the welding machine 54 is adjusted to a suitable welding starting point, and the clamping arm 56 in the clamping seat 55 on the surface of the welding machine 54 clamps the welding material through the clamping plate 59 under the action of the tension spring 58, and prepares for the welding operation. Then start the welding machine 54 to start welding the bridge expansion joint steel 3. During the welding process, the transverse screw slide 51, the lifting screw slide 52 and the longitudinal screw slide 53 are controlled to adjust the position of the welding machine 54 as needed to ensure the welding quality and continuity.

[0048] Furthermore, as the welding operation proceeds, the welding material will be continuously consumed. When the welding material needs to be replaced, the push-pull telescopic rod 620 is started to extend, and the push-pull telescopic rod 620 drives the electric clamp 621 to approach the surface of the replacement material tray 617. When the electric clamp 621 moves to the surface position of the welding material, the electric clamp 621 is started to clamp the new welding material by itself, and then the push-pull telescopic rod 620 is started to contract, so that the electric clamp 621 can be driven to drive the welding material out of the plug-in slot 619 opened on the surface of the replacement material tray 617 to complete the extraction of the welding material, and then the electric telescopic rod 63 is started, and the output end of the electric telescopic rod 63 pushes the push slider 64 to slide in the sliding slot opened inside the feeding rack 62 until the push slider 64 is pushed to one end of the feeding rack 62, thereby completing the transfer of the welding material (such as Fig.11 As shown), then by starting the longitudinal screw slide 53 to drive the welding machine 54 to drive the clamp seat 55 and the clamp arm 56 to move to the top of the welding material, by controlling the push-pull telescopic rod 620 to shrink, the electric clamp 621 and the welding material clamped by it can be driven to move upward. When the welding material clamped by the electric clamp 621 contacts the welding material clamped by the clamp 59, the welding material clamped by the clamp 59 can be pushed out, thereby ejecting it from the inside of the clamp 59 and clamping itself between the two groups of clamps 59, so that the automatic replacement of the welding material can be completed without manual replacement, so that the operator does not need to frequently manually replace the material in a complex welding equipment environment, reducing the labor intensity, not only greatly saving time, but also effectively improving the speed of replacing welding materials, thereby improving the overall work efficiency, but also avoiding improper installation of welding materials due to human operation errors, thereby ensuring the stability of welding quality, and improving equipment safety, reducing the opportunity of direct human contact with welding equipment and materials, reducing the safety risks such as electric shock and burns caused by misoperation, and ensuring the safety of operators.

[0049] During this period, by pushing the slider 64 to slide inside the feed rack 62, the toggle rod 65 can be driven to move accordingly. When the toggle rod 65 contacts the blocking rod 66, the tension spring 2 622 can be stretched to deform and generate elastic force, thereby pushing the push-pull rack 67 to move along the slide seat on the surface of the feed rack 62, thereby driving the push-pull gear 68 to rotate. At this time, the ratchet 610 on the rotating shaft 69 connected to the push-pull gear 68 cooperates with the ratchet groove in the push-pull gear 68 under the action of the spring 2 611 to ensure the uniqueness of the rotation direction, so that the push-pull gear 68 can drive the rotating shaft 69 to rotate inside the fixed frame 61, and then the rotating shaft 69 drives the drive shaft 613 through the bevel gear pair 3 612 to rotate between the fixed frame 61 and the rotating seat 61. 6, thereby driving the rotating disk 614 to rotate on one side of the replacement material tray 617. The eccentric lever 615 on the rotating disk 614 cooperates with the switching lever slot 618 inside the replacement material tray 617 during the rotation, so that the replacement material tray 617 rotates on the surface of the rotating seat 616, and the plug-in slot 619 for extracting the welding material can be moved to one station, and the plug-in slot 619 loaded with the welding material at the back can be rotated to this position, waiting for the subsequent clamping and replacement by the electric clamp 621, ensuring the continuous replacement of the welding material without manual intervention, which can effectively reduce the time delay and errors caused by manual operation, ensure the continuity of the production process, greatly shorten the replacement cycle of each welding material, and thus improve the production speed.

[0050] As the push slider 64 continues to slide, when the push slider 64 moves to one end of the feed rack 62, the toggle rod 65 will disengage from the surface of the blocking rod 66. At this time, the blocking rod 66 and the push-pull rack 67 move in the opposite direction on the surface of the feed rack 62 under the elastic force of the tension spring 2 622, thereby driving the push-pull gear 68 to rotate in the opposite direction. Because the push-pull gear 68 and the rotating shaft 69 are a unidirectional rotation mechanism, as the push-pull gear 68 rotates, the ratchet 610 will slide along the ratchet groove surface opened inside the push-pull gear 68, and will not transmit power to the surface of the rotating shaft 69, so the rotating shaft 69 will be guaranteed to be stationary.

[0051] It is worth noting that before the welding operation begins, the welding material to be replaced is placed inside the plug-in slot 619 opened on the surface of the replacement tray 617, and when the welding material is transferred to one end of the feeding rack 62, the push-pull telescopic rod 620 will be started again, thereby driving the electric clamp 621 and the welding material clamped by it to move downward, waiting for the welding machine 54 and the clamp 59 to work.

[0052] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bridge expansion joint welding fixing device with a limiting mechanism, comprising a welding seat, a processing seat fixed on the surface of the welding seat, and bridge expansion joint steels abutting on both sides of the surface of the processing seat; Features: The surface of the welding seat is mounted with a limit assembly, which includes a driving motor connected to both sides of the lower surface of the welding seat by screws, a driving gear fixed to the output end of the driving motor, and an extrusion rack meshingly connected to both sides of the surface of the driving gear. The two groups of extrusion racks are arranged symmetrically about the driving gear, and one end of the two groups of extrusion racks is respectively fixed with a moving seat, the surface of the moving seat is slidably connected with an extrusion plate, the surface of the moving seat is fixed with a positioning rod, the surface of the positioning rod is slidably connected with a lower pressure plate, and both ends of the processing seat are hinged to the limit plate through hinges; A moving rail is fixed on the surface of the welding seat, and the moving seat is slidably connected to the surface of the moving rail, a spring is fixed between the extrusion plate and the moving seat, an extrusion rack is fixed on one side of the extrusion plate, a positioning frame is fixed on the surface of the moving seat, and the extrusion rack is slidably connected to the inside of the positioning frame, a pushing gear is meshedly connected to the surface of the pushing rack, a transmission shaft is fixed inside the pushing gear, and the transmission shaft is rotatably connected to the surface of the moving seat through a bearing frame; A bevel gear pair 1 is fixed at one end of the transmission shaft, a threaded rod is coaxially fixed inside the bevel gear of the bevel gear pair 1, the threaded rod is rotatably connected to the surface of the moving seat through a bearing frame 2, a threaded block is threadedly connected to the surface of the moving seat, and the threaded block is slidably connected to the surface of the moving seat, and a movable hinge is hinged between the lower pressure plate and the threaded block; A fixed plate is fixed on one side of the welding seat surface close to the limit plate, the surface of the fixed plate is rotatably connected to a flip shaft through a bearing frame, a flip frame is fixed to the surface of the flip shaft, one end of the flip frame is rotatably connected to a pushing wheel, and the surface of the pushing wheel is in contact with the surface of the limit plate; A driven gear is fixed to the middle part of the surface of the flip shaft, and a driving gear is meshedly connected to the surface of the driven gear. A driven shaft is fixed inside the driving gear, and the driven shaft is rotatably connected to the surface of the processing seat through a bearing frame four. Bevel gear pairs two are symmetrically fixed at both ends of the surface of the driven shaft, and driving shafts are coaxially fixed in the bevel gears of the two sets of bevel gear pairs two, and the driving shaft is rotatably connected to the surface of the fixed plate, and the surface of the driving shaft is connected to a synchronous belt through a pulley, and one end of the synchronous belt is connected to a rotating shaft through a pulley, and the rotating shaft is rotatably connected to the surface of the welding seat, and a moving gear is fixed to the top surface of the rotating shaft, and a moving rack is meshedly connected to the surface of the moving gear, and the moving rack and the moving seat are fixedly connected.

2. The bridge expansion joint welding and fixing device with a limiting mechanism according to claim 1 is characterized in that: A welding assembly is installed on the surface of the welding seat, and the welding assembly includes a transverse screw slide fixed on the surface of the welding seat, a lifting screw slide fixed on the moving end of the transverse screw slide, and a longitudinal screw slide fixed on the moving end of the lifting screw slide. A welding machine is fixed on the moving end of the longitudinal screw slide.

3. The bridge expansion joint welding and fixing device with a limiting mechanism according to claim 2 is characterized in that: A clamp seat is fixed on the surface of the welding machine, and two groups of symmetrically arranged clamp arms are hinged inside the clamp seat. Fixed columns are symmetrically fixed on the surfaces of the two groups of clamp arms, a tension spring is fixed between the two groups of fixed columns, and clamp plates are fixed to the opposite ends of the two groups of clamp seats.

4. The bridge expansion joint welding and fixing device with a limiting mechanism according to claim 2 is characterized in that: A replacement component is installed on the surface of the longitudinal moving screw slide, and the replacement component includes a fixed frame fixed on the upper surface of the end of the longitudinal moving screw slide away from the lifting screw slide, a feeding frame fixed on the surface of the fixed frame, and an electric telescopic rod hinged inside the fixed frame, the output end of the electric telescopic rod is hinged with a push slider, and the push slider is slidably connected to a sliding groove opened in the feeding frame through a pulley, two groups of push-pull telescopic rods are fixed on the surface of the push slider, an electric clamp is fixed between the output ends of the two groups of push-pull telescopic rods, a rotating seat is fixed on the surface of the fixed frame, a replacement material tray is rotatably connected to the surface of the rotating seat, and a plurality of groups of plug-in slots are opened in a circular array on the surface of the replacement material tray.

5. The bridge expansion joint welding and fixing device with a limiting mechanism according to claim 4 is characterized in that: A toggle rod is fixed on the surface of the pushing slider, and a push-pull rack is slidably connected to the surface of the feeding rack through a sliding seat, a blocking rod is fixed to the side of the push-pull rack surface close to the toggle rod, and two tension springs are fixed between the blocking rod and the feeding rack, and a push-pull gear is meshingly connected to the surface of the push-pull rack, a rotating shaft is connected to the inside of the push-pull gear, and a plurality of ratchet pawls arranged in a ring are hinged on the surface of the rotating shaft, a ratchet groove matching the ratchet pawl is provided inside the push-pull gear, and two springs are fixed between the ratchet pawl and the rotating shaft.

6. The bridge expansion joint welding and fixing device with a limiting mechanism according to claim 5 is characterized in that: The rotating shaft is rotatably connected to the inside of the feeding rack, and a bevel gear pair three is fixed to the end of the rotating shaft away from the push-pull gear, a driving shaft is coaxially fixed inside the bevel gear of the bevel gear pair three, the driving shaft is rotatably connected to the inside of the fixed rack, and a rotating disk is fixed to one end of the driving shaft, an eccentric shifting rod is fixed to the surface of the rotating disk, and a plurality of groups of switching shifting grooves in a circular array are opened inside the material replacement disk.

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