Steel box girder rib plate welding device

Abstract

The utility model provides a steel box girder rib plate welding device, which relates to the technical field of bridge construction equipment and comprises a mounting frame, a welding mechanism is arranged at one end of the mounting frame, the mounting frame is used for fixing the welding mechanism, and the welding mechanism comprises a driving motor. By means of the first guide rod and the second guide rod which penetrate through the guide holes, when a steel box plate is obliquely placed, the welding gun frame can move along the first guide rod and the second guide rod through the guide holes, the moving direction of the welding gun frame is limited, the spray welding position of a welding gun nozzle at the bottom end of the welding gun frame is made to move horizontally, and the welding effect is improved. Meanwhile, by means of the characteristic that the abutting face of the abutting plate corresponds to the initial position spray welding point of the welding gun spray head, after the installation frame and the limiting plate are fixedly installed, the welding gun spray head is just located at the initial welding point of the rib plate, then the position of the initial welding point does not need to be manually adjusted, and the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction equipment, in particular to a steel box girder rib plate welding device. Background Art

[0002] A steel box girder, also called a steel plate box girder, is a common structural form for long-span bridges, generally used in bridges with larger spans. Because its shape is like a box, it is called a steel box girder. During the bridge construction process, the rib plates in the steel box girder usually refer to transverse or longitudinal strengthening members used to improve the local stiffness and overall stability of the steel box girder. It can be a transverse diaphragm or a longitudinal stiffening rib. The rib plates are usually installed on the surface of the steel box plates by welding. Most of the existing rib plate welding is carried out by manually holding a welding torch or by a welding trolley for welding the rib plates. The welding trolley consists of a roller trolley and a welding torch. The roller trolley moves along the rib plate, and the welding torch is used to continuously weld the rib plate and the steel box plates.

[0003] In the prior art, during the continuous welding of rib plates using a welding trolley outdoors, due to the unstable placement of the steel box, the steel box plates are horizontally inclined, which will cause the welding trolley to be affected by its own gravity, resulting in the welding trolley being unable to move in a straight line and deviating from the movement, causing welding defects. Moreover, before the welding operation, it is necessary for workers to adjust the initial welding position manually. Otherwise, there are likely to be missed welds at the edges of both ends of the rib plate during welding, affecting the strength of the rib plate. For this reason, we propose a steel box girder rib plate welding device. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a steel box girder rib plate welding device.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A steel box girder rib plate welding device, including a mounting frame. One end of the mounting frame is provided with a welding mechanism, and the mounting frame is used to fix the welding mechanism. The welding mechanism includes a driving motor. One end of the driving shaft of the driving motor is inserted and installed with a threaded screw rod. A welding torch holder is arranged on the outer wall of the threaded screw rod. The bottom end of the welding torch holder is fixedly connected with a welding torch nozzle, and the welding torch nozzle is used to weld the rib plates. One end of the welding mechanism is provided with a support mechanism, and the support mechanism is used to support and limit the threaded screw rod.

[0006] Preferably, the welding mechanism further includes a first guiding rod and a second guiding rod fixedly installed at one end of the driving motor. The first guiding rod and the second guiding rod are respectively located on both sides of the threaded screw rod. Through holes and threaded holes penetrating each other are formed at both ends of the welding torch holder. The first guiding rod and the second guiding rod both penetrate inside the through holes, and the threaded screw rod penetrates inside the threaded hole and is in threaded engagement with the internal thread of the threaded hole. An air intake pipe is fixedly connected to the top end of the welding torch holder, and one end of the air intake pipe is communicated with the welding torch nozzle.

[0007] Preferably, the supporting mechanism includes a rotating cylinder inserted at one end of the threaded screw rod. A supporting plate is fixedly connected to one end of the rotating cylinder. A pair of inserting cylinders are fixedly connected to the outer wall of the supporting plate, and the pair of inserting cylinders are respectively inserted at one ends of the first guiding rod and the second guiding rod.

[0008] Preferably, a pressing slider is slidably installed on one side of the supporting plate, and a groove for pressing the welding wire is formed at the bottom end of the pressing slider.

[0009] Preferably, a limiting plate is fixedly connected to one side of the mounting rack. A sliding rack is inserted and installed on the side of the limiting plate close to the welding torch holder. One end of the sliding rack is fixedly connected to an adjusting screw rod. The adjusting screw rod is located on the other side of the limiting plate. A fastening pressing ring is rotatably installed on the outer wall of the adjusting screw rod, and a clamping plate is fixedly connected to one end of the sliding rack.

[0010] Preferably, a abutting plate is fixedly connected to the top end of the limiting plate, and the abutting surface of the abutting plate corresponds to the initial spraying point of the welding torch nozzle.

[0011] Preferably, the mounting rack and the limiting plate are of an integral structure, and the sliding rack, the adjusting screw rod and the clamping plate are of an integral structure.

[0012] Preferably, magnetic bottom plates are fixedly connected to the bottom ends of the mounting rack and the supporting plate.

[0013] Advantageous effects:

[0014] 1. Through the first guiding rod and the second guiding rod penetrating inside the through holes, when the steel box plate is placed obliquely, the welding torch holder can move along the first guiding rod and the second guiding rod by using the through holes, limit the moving direction of the welding torch holder, make the spraying position of the welding torch nozzle at the bottom end of the welding torch holder move horizontally, continuously weld the rib plate, avoid the occurrence of welding detachment, and at the same time, by using the feature that the abutting surface of the abutting plate corresponds to the initial spraying point of the welding torch nozzle, when the fixed installation of the mounting rack and the limiting plate is completed, the welding torch nozzle is accurately positioned at the initial welding point of the rib plate, thus eliminating the need for manual adjustment of the initial welding point position and improving the welding efficiency.

[0015] 2. The utility model can fix the welding wire by the buckle slider fixedly installed on one side of the support plate. The groove for buckling the welding wire is arranged at the bottom end, so as to buckle and fix the welding wire, and avoid the displacement of the welding wire from affecting the welding effect.

[0016] 3. The utility model adsorbs and fixes the mounting rack and the support plate through the magnetic bottom plate fixedly connected to the bottom end of the support plate, improves the mounting firmness of the mounting rack and the support plate, reduces the force intensity of the equipment on the rib plate, and avoids the situation that the rib plate is displaced to affect the welding and the force effect of the rib plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the three-dimensional structural schematic diagram after installation of the utility model;

[0018] Figure 2 is the three-dimensional structural schematic diagram of the utility model;

[0019] Figure 3 is the three-dimensional structural schematic diagram of the welding mechanism;

[0020] Figure 4 is the three-dimensional structural schematic diagram of the mounting rack.

[0021] LEGEND DESCRIPTION:

[0022] 1. Mounting rack; 2. Welding mechanism; 3. Support mechanism; 4. Driving motor; 5. Threaded lead screw; 6. Welding torch holder; 7. Welding torch nozzle; 8. First guide rod; 9. Second guide rod; 10. Gas connection pipe; 11. Insertion cylinder; 12. Rotating cylinder; 13. Support plate; 14. Buckle slider; 15. Limiting plate; 16. Sliding rack; 17. Adjusting screw; 18. Tightening pressure ring; 19. Clamping plate; 20. Abutting plate; 21. Guide hole; 22. Threaded hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the following combines specific embodiments and drawings to further elaborate the utility model. However, the following embodiments are only the preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the utility model.

[0024] The following describes the specific embodiments of the utility model with reference to the drawings.

[0025] Refer to Figures 1-4, a steel box girder rib plate welding device, including a mounting frame 1, one end of the mounting frame 1 is provided with a welding mechanism 2, and the mounting frame 1 is used to fix the welding mechanism 2; the welding mechanism 2 includes a driving motor 4, one end of the driving shaft of the driving motor 4 is inserted and installed with a threaded screw rod 5, the outer wall of the threaded screw rod 5 is provided with a welding torch holder 6, the bottom end of the welding torch holder 6 is fixedly connected with a welding torch nozzle 7, and the welding torch nozzle 7 is used to weld the rib plate; one end of the welding mechanism 2 is provided with a support mechanism 3, and the support mechanism 3 is used to support and limit the threaded screw rod 5.

[0026] As Figures 1-3 shown, by setting the mounting frame 1, the welding mechanism 2 can be fixed. By driving the threaded screw rod 5 to rotate through the driving motor 4, the welding torch holder 6 can be moved along the threaded screw rod 5. Furthermore, the welding torch nozzle 7 fixedly connected to the bottom end of the welding torch holder 6 is used to weld the connection between the rib plate and the steel box. By setting the support mechanism 3, one end of the threaded screw rod 5 can be supported, preventing one end of the threaded screw rod 5 from being suspended and stressed, causing it to tilt, resulting in the tilt of the horizontal degree of the threaded screw rod 5 and the tilt of the welding torch holder 6 during movement, causing deviation.

[0027] As Figures 1-3 shown, the welding mechanism 2 further includes a first guide rod 8 and a second guide rod 9 fixedly installed at one end of the driving motor 4. The first guide rod 8 and the second guide rod 9 are respectively located on both sides of the threaded screw rod 5. Through holes 21 and threaded holes 22 that penetrate each other are opened at both ends of the welding torch holder 6. The first guide rod 8 and the second guide rod 9 both penetrate inside the through hole 21, and the threaded screw rod 5 penetrates inside the threaded hole 22 and meshes with the internal thread of the threaded hole 22. The top end of the welding torch holder 6 is fixedly connected with an air intake pipe 10, and one end of the air intake pipe 10 is communicated with the welding torch nozzle 7. The first guide rod 8 and the second guide rod 9 penetrating inside the through hole 21 can enable the welding torch holder 6 to move along the first guide rod 8 and the second guide rod 9 by using the through hole 21, facilitating the limitation of the moving direction of the welding torch holder 6, making the welding area of the welding torch nozzle 7 at the bottom end of the welding torch holder 6 move horizontally, and continuously welding the rib plate. By the rotating threaded screw rod 5, the welding torch holder 6 can be driven to move along the first guide rod 8 and the second guide rod 9 in cooperation with the thread inside the threaded hole 22.

[0028] As Figures 1-3As shown in the figure, the support mechanism 3 includes a rotating cylinder 12 inserted into one end of the threaded screw rod 5. One end of the rotating cylinder 12 is fixedly connected to a support plate 13. A pair of insertion cylinders 11 are fixedly connected to the outer wall of the support plate 13. The pair of insertion cylinders 11 are respectively inserted into one end of the first guide rod 8 and the second guide rod 9. Through the rotating cylinder 12 at one end of the threaded screw rod 5 and the pair of insertion cylinders 11 fixedly connected to the outer wall of the support plate 13, one end of the threaded screw rod 5, the first guide rod 8, and the second guide rod 9 can be inserted, and then the support plate 13 is used to support one end of the threaded screw rod 5, the first guide rod 8, and the second guide rod 9, avoiding the threaded screw rod 5, the first guide rod 8, and the second guide rod 9 from being stressed and causing the rod body to tilt, which affects the movement of the welding torch holder 6.

[0029] As Figures 1-3 shown in the figure, a buckle slider 14 is slidably installed on one side of the support plate 13. A groove for buckling the welding wire is opened at the bottom end of the buckle slider 14. Through the buckle slider 14 fixedly installed on one side of the support plate 13, the welding wire can be buckled and fixed.

[0030] As Figure 2 and Figure 4 shown in the figure, a limiting plate 15 is fixedly connected to one side of the mounting frame 1. A sliding frame 16 is inserted and installed on the side of the limiting plate 15 close to the welding torch holder 6. One end of the sliding frame 16 is fixedly connected to an adjusting screw rod 17. The adjusting screw rod 17 is located on the other side of the limiting plate 15. A fastening pressure ring 18 is rotatably installed on the outer wall of the adjusting screw rod 17. One end of the sliding frame 16 is fixedly connected to a clamping plate 19. By rotating the fastening pressure ring 18 on the outer wall of the adjusting screw rod 17, the sliding frame 16 can be driven to move towards the side of the limiting plate 15, and then the clamping plate 19 fixedly connected to one end of the sliding frame 16 is used to cooperate with the limiting plate 15 to clamp the rib plate, thereby completing the fixation of the entire device.

[0031] As Figure 2 and Figure 4 shown in the figure, a abutting plate 20 is fixedly connected to the top end of the limiting plate 15, and the abutting surface of the abutting plate 20 corresponds to the initial spraying point of the welding torch nozzle 7. Through the abutting plate 20 fixedly connected to the top end of the limiting plate 15, the side of the rib plate can be abutted, thereby quickly limiting the installation positions of the mounting frame 1 and the limiting plate 15. At the same time, by using the characteristic that the abutting surface of the abutting plate 20 corresponds to the initial spraying point of the welding torch nozzle 7, when the fixed installation of the mounting frame 1 and the limiting plate 15 is completed, the welding torch nozzle 7 is just located at the initial welding point of the rib plate, so that it is not necessary to manually adjust the position of the initial welding point, improving the welding efficiency.

[0032] As Figure 3 and Figure 4As shown, the mounting bracket 1 and the limiting plate 15 are of an integral structure, and the sliding bracket 16, the adjusting screw 17 and the clamping plate 19 are of an integral structure, enhancing the strength of the entire device and preventing the device from deforming or breaking during the installation and use of the entire equipment, which may affect the welding operation.

[0033] As Figures 1-2 shown, magnetic bottom plates are fixedly connected to the bottom ends of both the mounting bracket 1 and the support plate 13. The magnetic bottom plates can adsorb and fix the mounting bracket 1 and the support plate 13, improving the mounting firmness of the mounting bracket 1 and the support plate 13, reducing the force exerted by the equipment on the rib plate, and preventing the rib plate from shifting, which may affect the welding and the force-bearing effect of the rib plate.

[0034] The working principle of the present utility model is as follows: Fix the steel box rib plate on the surface of the steel box plate using a supporting device or a pressing device, make the abutting plate 20 abut against one end of the rib plate, then bring the side of the limiting plate 15 close to the clamping plate 19 into contact with one side of the rib plate, and then rotate the fastening collar 18. Utilize the threaded fit between the outer wall of the adjusting screw 17 and the fastening collar 18 to pull the sliding bracket 16 to move, so that the clamping plate 19 fits against the other side of the rib plate, and cooperate with the limiting plate 15 to clamp the rib plate. Moreover, when the steel box plate is in a horizontal state, there is no need to use an additional supporting or pressing device to limit the rib plate. After clamping the rib plate with the limiting plate 15 and the clamping plate 19, it can be supported and fixed, making the rib plate perpendicular to the steel box plate. After the installation of the equipment is completed, connect the gas supply pipe for welding to the gas connection pipe 10, lay the welding wire along the welding joint of the rib plate and the steel box plate, use the pressing slider 14 on one side of the support plate 13 to press and limit the welding wire, and then turn on the gas supply equipment to make the welding gun nozzle 7 spray-weld the welding joint of the rib plate and the steel box plate. During the spray-welding process, turn on the driving motor 4, drive the threaded lead screw 5 to rotate by the driving motor 4, and push the welding gun holder 6 to move uniformly along the first guide rod 8 and the second guide rod 9, thereby moving the welding gun nozzle 7 to complete the welding of the rib plate and the steel box plate. When the welding of one side of the rib plate is completed, disassemble the equipment and fix the equipment again at the other end of the rib plate to complete the welding operation on the other side of the rib plate. At the same time, through the plug-in installation of the threaded lead screw 5, the first guide rod 8 and the second guide rod 9, when welding rib plates of different lengths, replace the threaded lead screw 5, the first guide rod 8 and the second guide rod 9 that match their lengths to meet the welding requirements of the rib plates.

[0035] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will also have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed for the present utility model is defined by the appended claims and their equivalents.

Claims

1. A steel box girder rib plate welding device, characterized in that: It includes a mounting frame (1), one end of the mounting frame (1) is provided with a welding mechanism (2), and the mounting frame (1) is used to fix the welding mechanism (2); the welding mechanism (2) includes a driving motor (4), one end of the driving shaft of the driving motor (4) is inserted and installed with a threaded screw rod (5), the outer wall of the threaded screw rod (5) is provided with a welding torch holder (6), the bottom end of the welding torch holder (6) is fixedly connected with a welding torch nozzle (7), and the welding torch nozzle (7) is used to weld the rib plate; one end of the welding mechanism (2) is provided with a support mechanism (3), and the support mechanism (3) is used to support and limit the threaded screw rod (5).

2. The steel box girder rib plate welding device according to claim 1, characterized in that: The welding mechanism (2) further includes a first guide rod (8) and a second guide rod (9) fixedly installed at one end of the driving motor (4), the first guide rod (8) and the second guide rod (9) are respectively located on both sides of the threaded screw rod (5), through holes (21) and threaded holes (22) that penetrate each other are opened at both ends of the welding torch holder (6), the first guide rod (8) and the second guide rod (9) both penetrate inside the through hole (21), the threaded screw rod (5) penetrates inside the threaded hole (22) and is in threaded engagement with the internal thread of the threaded hole (22), the top end of the welding torch holder (6) is fixedly connected with an air intake pipe (10), and one end of the air intake pipe (10) is communicated with the welding torch nozzle (7).

3. The steel box girder rib plate welding device according to claim 2, characterized in that: The support mechanism (3) includes a rotating cylinder (12) inserted at one end of the threaded screw rod (5), one end of the rotating cylinder (12) is fixedly connected with a support plate (13), a pair of insertion cylinders (11) are fixedly connected to the outer wall of the support plate (13), and the pair of insertion cylinders (11) are respectively inserted at one ends of the first guide rod (8) and the second guide rod (9).

4. The steel box girder rib plate welding device according to claim 3, characterized in that: A clamping slider (14) is slidably installed on one side of the support plate (13), and a groove for clamping the welding wire is opened at the bottom end of the clamping slider (14).

5. A steel box girder rib plate welding device according to claim 1, characterized in that: A limiting plate (15) is fixedly connected to one side of the mounting frame (1), a sliding frame (16) is inserted and installed on the side of the limiting plate (15) close to the welding torch holder (6), one end of the sliding frame (16) is fixedly connected with an adjusting screw rod (17), the adjusting screw rod (17) is located on the other side of the limiting plate (15), a fastening compression ring (18) is rotatably installed on the outer wall of the adjusting screw rod (17), and one end of the sliding frame (16) is fixedly connected with a clamping plate (19).

6. The steel box girder rib plate welding device according to claim 5, characterized in that: A abutting plate (20) is fixedly connected to the top end of the limiting plate (15), and the abutting surface of the abutting plate (20) corresponds to the initial spraying point of the welding torch nozzle (7).

7. A steel box girder rib plate welding device according to claim 5, characterized in that: The mounting frame (1) and the limiting plate (15) are of an integral structure, and the sliding frame (16), the adjusting screw rod (17) and the clamping plate (19) are of an integral structure.

8. A steel box girder rib plate welding device according to claim 4, characterized in that: Magnetic bottom plates are fixedly connected to the bottom ends of the mounting frame (1) and the support plate (13).

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