H-shaped steel welding device

Abstract

The invention relates to the technical field of welding devices, and one embodiment of the invention provides an H-shaped steel welding device which comprises two check blocks, an overturning assembly, a pushing plate and a pushing assembly, the two check blocks are arranged on a workpiece plate through two first electric cylinders correspondingly, and the first electric cylinders are installed at the bottom end of a welding table; the number of the overturning assemblies is two, the two overturning assemblies are arranged at the top end of the welding table through the two moving assemblies correspondingly and used for pushing the H-shaped steel to be overturned, the pushing plate is arranged on the two overturning assemblies, and the pushing assembly is arranged at the top end of the welding table and used for pushing the overturned H-shaped steel to the welding position. By means of the technical scheme, the technical problems that in the prior art, when different positions of the H-shaped steel are welded, workers turn over the H-shaped steel repeatedly, troubles are caused, and the workers are prone to being scalded are solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of welding devices, and more particularly, to an H-shaped steel welding device. Background Art

[0002] An H-shaped steel is a steel with a cross-sectional shape of "H", belonging to an efficient and economical cross-sectional profile. In industrial and civil buildings, H-shaped steels are widely used in the construction of factories, warehouses, etc. H-shaped steels can be used as structural members such as columns and beams. In bridge engineering, H-shaped steels can also be used to construct structural members such as main beams and bridge piers of bridges.

[0003] After an H-shaped steel has been used for a period of time, there may be damaged areas on the surface of the H-shaped steel. Therefore, it is necessary to weld reinforcement parts to the damaged areas on the surface of the H-shaped steel to improve its load-bearing capacity. When welding, the H-shaped steel is usually placed on a workbench, and the welding torch above is moved back and forth, left and right. The tip of the welding torch faces downwards, and wire is fed into the welding torch through a wire feeding mechanism to weld the damaged area of the H-shaped steel.

[0004] Since the damaged parts of the H-shaped steel may be distributed on various surfaces, it is necessary to weld different positions of the H-shaped steel during welding and adjust the orientation of the welding torch. The different positions of the H-shaped steel are welded by rotating the angle of the welding torch. When the muzzle of the welding torch is vertically downward for welding, it is downward vertical welding. When performing downward vertical welding, the molten pool easily flows downward under the action of gravity, so that the welding speed is relatively fast and the efficiency is relatively high. If the welding torch is tilted, the molten pool is likely to flow downward along the weld, and when the welding torch is tilted for welding, the reinforcement height on the surface of the weld may be uneven, and the forming effect is not as good as that of downward vertical welding. If the H-shaped steel is manually rotated to change the welding position, although it is rather troublesome to manually flip some H-shaped steels with relatively light weight multiple times, and heat is generated during welding, it is also easy to bring the risk of scalding to the human body. Summary of the Invention

[0005] To overcome the above defects, embodiments of the present disclosure provide an H-shaped steel welding device, which solves the technical problem in the prior art that when welding different positions of an H-shaped steel, it is not only troublesome but also easy to get scalded by the staff when turning the H-shaped steel over multiple times.

[0006] According to one aspect, at least one embodiment of the present disclosure provides an H-shaped steel welding device, including a welding table and a welder. The welder is installed on the welding table. A workpiece plate is fixedly installed at the top of the welding table. Two sliding grooves are formed at the top of the welding table. The device further includes baffle blocks, a flipping assembly, a pushing plate, and a pushing assembly. There are two baffle blocks, and the two baffle blocks are respectively arranged on the workpiece plate through two first electric cylinders, and the first electric cylinders are installed at the bottom end of the welding table. There are two flipping assemblies, and the two flipping assemblies are respectively arranged on the top of the welding table through two moving assemblies, for pushing the H-shaped steel to turn it over. The pushing plate is arranged on the two flipping assemblies. The pushing assembly is arranged at the top of the welding table, for pushing the turned-over H-shaped steel to the welding position.

[0007] Further, the moving assembly includes a support cover, a reciprocating lead screw, a rotating shaft, a lead screw nut, a motor, and a transmission assembly. The support cover is fixedly installed at the top of the welding table. The reciprocating lead screw is rotatably installed in the support cover. The rotating shaft is coaxially connected to the reciprocating lead screw. The lead screw nut is installed on the reciprocating lead screw. There is one motor, and the motor is installed on one of the support covers, and the motor is coaxially connected to one of the rotating shafts. The transmission assembly is arranged on the side of the welding table.

[0008] Further, the transmission assembly includes a transmission shaft, a first driving gear ring, and a first driven gear. The transmission shaft is rotatably installed between the two support covers through a support frame. There are two first driving gear rings, and the two first driving gear rings are respectively fixedly installed on the two rotating shafts. There are two first driven gears, and the two first driven gears are respectively fixedly installed at both ends of the transmission shaft, and the two first driving gear rings are respectively meshed with the two first driven gears.

[0009] Further, the flipping assembly includes a moving frame and a second electric cylinder. There are two moving frames, and the two moving frames are respectively fixedly installed at the top of the two lead screw nuts. The second electric cylinders are respectively installed on the sides of the two moving frames, and the pushing plate is fixedly installed at the output ends of the two second electric cylinders.

[0010] Further, the pushing component includes a sliding rod, a first rack, a rotating shaft, a second driving gear ring, a correction plate and a driving component. There are four sliding rods, and every two of the four sliding rods form a group. The two groups of sliding rods are respectively slidably installed in two chutes of the welding table through sliders. There are two first racks, and the two first racks are respectively fixedly installed on the sides of the two groups of sliding rods. The rotating shaft is rotatably installed on the side of the workpiece plate through two support plates. There are two second driving gear rings, and the two second driving gear rings are both fixedly installed on the rotating shaft, and the two second driving gear rings are respectively engaged with the two first racks. The correction plate is fixedly installed at the tops of the two first racks. The driving component is arranged on the sides of the rotating shaft and the blocking block.

[0011] Further, the driving component includes a connecting rod, a second rack and a second driven gear. There are two connecting rods, and the two connecting rods are respectively fixedly installed on the sides of the two blocking blocks. There are two second racks, and the two second racks are respectively fixedly installed on the sides of the two connecting rods. There are two second driven gears, and the two second driven gears are respectively fixedly installed at both ends of the rotating shaft, and the two second driven gears are respectively engaged with the two second racks.

[0012] Further, the lowermost ends of the correction plate and the pushing plate are at the same horizontal position as the top end of the workpiece plate.

[0013] Further, two through slots are formed in the workpiece plate, and the two blocking blocks respectively penetrate and are slidably installed in the two through slots of the workpiece plate.

[0014] Still further, the connecting rod is located between the workpiece plate and the welding table.

[0015] Furthermore, a chute is formed in the inner bottom end of the support cover, and the lead screw nut is slidably installed in the chute of the support cover through a sliding block.

[0016] The beneficial effects of the embodiments of the present disclosure are as follows: 1. In the present disclosure, when welding different positions of the H-beam, the blocking block moves up and protrudes, and cooperates with the flipping component to push the H-beam. The side of the H-beam contacts the blocking block and thus flips under the pushing action. Compared with manual handling and flipping, it not only saves manpower but also prevents the situation of scalding during manual handling.

[0017] 2. In the present disclosure, when one side is flipped, while the blocking block moves downward, the pushing component can synchronously drive the correction plate to move forward, pushing the H-beam forward, so as to weld it. And if continuous flipping is required, the blocking block can be moved upward again for another flip, enabling it to be flipped multiple times on the workpiece plate without being pushed out of the workpiece plate.

[0018] In summary, through the mutual cooperation among the blocking block, the flipping component, the pushing plate and the pushing component, when welding different positions of the H-beam, the H-beam can be pushed and flipped, so that the H-beam can be welded at different positions without adjusting the welding gun, and manual flipping is not required either, which is both labor-saving and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description in the embodiments of the present disclosure. Obviously, the following-described drawings are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the exemplary embodiments of the present disclosure and these drawings.

[0020] Figure 1 It is a schematic structural diagram of the whole invention; Figure 2 It is a schematic structural diagram of the welding table, workpiece plate, blocking block and the first electric cylinder of the present invention in cooperation; Figure 3 It is a schematic structural diagram of the moving component of the present invention; Figure 4 It is a schematic structural diagram of the flipping component of the present invention; Figure 5 It is a schematic structural diagram of the first electric cylinder, blocking block and the pushing component of the present invention in cooperation; Figure 6 It is a schematic structural diagram of the welding table, workpiece plate, blocking block, first electric cylinder and connecting rod of the present invention in cooperation; Figure 7 It is a schematic structural diagram of the support cover and the lead screw nut of the present invention in cooperation.

[0021] In the figure: 1, welding table; 2, welder; 3, workpiece plate; 4, blocking block; 5, first electric cylinder; 6, pushing plate; 7, support cover; 8, reciprocating lead screw; 9, rotating shaft; 10, lead screw nut; 11, motor; 12, transmission shaft; 13, driving gear ring one; 14, driven gear one; 15, moving frame; 16, second electric cylinder; 17, sliding rod; 18, rack one; 19, rotating shaft; 20, driving gear ring two; 21, correction plate; 22, connecting rod; 23, rack two; 24, driven gear two. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present disclosure and not for limiting the present disclosure.

[0023] For the sake of simplicity of the drawings, only the parts related to the disclosure are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, for the sake of simplicity and easy understanding of the drawings, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0024] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0025] In the present disclosure, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact of the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is at a lower horizontal height than the second feature.

[0026] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left" and "right" are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present disclosure.

[0027] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0028] Such as Figures 1 to 7As shown, it shows an H-shaped steel welding device in an embodiment of the present disclosure, including a welding table 1 and a welder 2. The welder 2 is installed on the welding table 1. A workpiece plate 3 is fixedly installed at the top of the welding table 1. Two chutes are opened at the top of the welding table 1. When welding, the H-shaped steel is placed on the workpiece plate 3 and fixed on the workpiece plate 3 through fixing devices such as clamps. A welding gun is installed on the welder 2, and the muzzle of the welding gun is vertically downward and aligned with the H-shaped frame. Moreover, the welder 2 can move left and right on the welding table 1 numerically controlled, so as to drive the welding gun to weld different positions on the same side of the H-shaped steel.

[0029] It further includes baffle blocks 4, a flipping assembly, a push plate 6 and a pushing assembly. There are two baffle blocks 4, and the two baffle blocks 4 are respectively arranged on the workpiece plate 3 through two first electric cylinders 5, and the first electric cylinders 5 are installed at the bottom end of the welding table 1. There are two flipping assemblies, and the two flipping assemblies are respectively arranged at the top end of the welding table 1 through two moving assemblies for pushing the H-shaped steel to turn it over. The push plate 6 is arranged on the two flipping assemblies. The pushing assembly is arranged at the top end of the welding table 1 for pushing the turned-over H-shaped steel to the welding position.

[0030] After welding one side, when the H-shaped steel needs to be turned over, because two through slots are opened on the workpiece plate 3, the two baffle blocks 4 are respectively slidably installed through the two through slots of the workpiece plate 3. As Figure 2 shown, first, the first electric cylinder 5 is started, and the output end of the first electric cylinder 5 drives the baffle block 4 to move up and protrude through the through slot of the workpiece plate 3. Then, the moving assembly drives the flipping assembly and the push plate 6 to move forward. As Figure 3 and Figure 7 shown, the moving assembly includes a support cover 7, a reciprocating lead screw 8, a rotating shaft 9, a lead screw nut 10, a motor 11 and a transmission assembly. The support cover 7 is fixedly installed at the top end of the welding table 1. The reciprocating lead screw 8 is rotatably installed in the support cover 7. The rotating shaft 9 is coaxially connected with the reciprocating lead screw 8. The lead screw nut 10 is installed on the reciprocating lead screw 8. There is one motor 11, and the motor 11 is installed on one of the support covers 7 and is coaxially connected with one of the rotating shafts 9. The transmission assembly is arranged on the side of the welding table 1. The transmission assembly includes a transmission shaft 12, a driving gear ring 13 and a driven gear 14. The transmission shaft 12 is rotatably installed between the two support covers 7 through a support frame. There are two driving gear rings 13, and the two driving gear rings 13 are respectively fixedly installed on the two rotating shafts 9. There are two driven gears 14, and the two driven gears 14 are respectively fixedly installed at both ends of the transmission shaft 12, and the two driving gear rings 13 are respectively meshed with the two driven gears 14.

[0031] Specifically, start the motor 11. The motor 11 drives one of the rotating shafts 9 to rotate. The rotating shaft 9 drives one of the reciprocating lead screws 8 to rotate within the support cover 7. Since the inner bottom end of the support cover 7 is provided with a chute, and the lead screw nut 10 is slidably installed in the chute of the support cover 7 through a slider, the lead screw nut 10 can slide back and forth on the support cover 7 and the reciprocating lead screw 8, and can also be limited so that it does not rotate. It should be added that the lead screw nut 10 and the reciprocating lead screw 8 are in rolling thread transmission, which is a well-known technology. At the same time, one of the rotating shafts 9 drives one of the driving gear rings 13. The driving gear ring 13 drives the driven gear 14 to rotate. The driven gear drives the transmission shaft 12 to rotate, and then drives the other driven gear 14 to rotate. And under the rotation of the driven gear 14, it drives the other driving gear ring 13 engaged with it to rotate, drives the other rotating shaft 9 and the reciprocating lead screw 8 to rotate, makes the other lead screw nut 10 move, and further makes the two moving frames 15 move synchronously. And only one motor 11 is needed to drive the two moving frames 15 to move synchronously, so that they move forward to the side of the workpiece plate 3. After the movement is completed, the H-shaped steel is flipped again through the flipping assembly.

[0032] Among them, as Figure 4 shown, the flipping assembly includes the moving frames 15 and the second electric cylinders 16. There are two moving frames 15, and the two moving frames 15 are respectively fixedly installed at the tops of the two lead screw nuts 10. The second electric cylinders 16 are respectively installed on the sides of the two moving frames 15, and the push plate 6 is fixedly installed at the output ends of the two second electric cylinders 16. Specifically, start the second electric cylinder 16. The output end of the second electric cylinder 16 drives the moving frame 15 to move forward. Since the bottom end of the push plate 6 is at the same horizontal position as the top end of the workpiece plate 3, the push frame moves to the top of the workpiece plate 3 and contacts the side of the H-shaped steel, and further pushes it. When pushing it, since there is a blocking block 4 on the side of the H-shaped steel to block, the H-shaped steel will be flipped by 90°.

[0033] After flipping one side, the position of the H-shaped steel will shift relative to its original position. Then, the pushing assembly can be used to drive the correction plate 21 to move forward to push the H-shaped steel, as Figure 5As shown in the figure, the pushing component includes a sliding rod 17, a first rack 18, a rotating shaft 19, a second driving gear ring 20, a correction plate 21 and a driving component. There are four sliding rods 17. Every two of the four sliding rods 17 form a group. The two groups of sliding rods 17 are respectively slidably installed in two chutes of the welding table 1 through sliders. There are two first racks 18, and the two first racks 18 are respectively fixedly installed on the sides of the two groups of sliding rods 17. The rotating shaft 19 is rotatably installed on the side of the workpiece plate 3 through two support plates. There are two second driving gear rings 20, and the two second driving gear rings 20 are both fixedly installed on the rotating shaft 19, and the two second driving gear rings 20 are respectively engaged with the two first racks 18. The correction plate 21 is fixedly installed at the tops of the two first racks 18. The driving component is arranged on the sides of the rotating shaft 19 and the blocking block 4. The driving component includes a connecting rod 22, a second rack 23 and a second driven gear 24. There are two connecting rods 22, and the two connecting rods 22 are respectively fixedly installed on the sides of the two blocking blocks 4. There are two second racks 23, and the two second racks 23 are respectively fixedly installed on the sides of the two connecting rods 22. There are two second driven gears 24, and the two second driven gears 24 are respectively fixedly installed at both ends of the rotating shaft 19, and the two second driven gears 24 are respectively engaged with the two second racks 23.

[0034] Specifically, after flipping one side is completed, the first electric cylinder 5 is started again. The output end of the first electric cylinder 5 drives the blocking block 4 to move downward. As Figure 6 shown in the figure, since the connecting rod 22 is located between the workpiece plate 3 and the welding table 1, the blocking block 4 drives the connecting rod 22 to move downward between the workpiece plate 3 and the welding table 1. The connecting rod 22 drives the second rack 23 to move downward. The second rack 23 drives the second driven gear 24 engaged with it to rotate. The second driven gear 24 drives the rotating shaft 19 and the second driving gear ring 20 on the rotating shaft 19 to rotate. The second driving gear ring 20 drives the first rack 18 to move forward. The first rack 18 drives the correction plate 21 to move forward. Since the bottom end of the correction plate 21 and the top end of the workpiece plate 3 are at the same horizontal position, the correction plate 21 pushes the H-shaped steel on the workpiece plate 3 to move forward by one end to the original position, so as to perform welding again. And if multiple flips are required, the H-shaped steel will not be pushed outside the workpiece plate 3 when pushing the H-shaped steel. When performing subsequent welding, the first electric cylinder 5 is started again to make the blocking block 4 move upward and protrude a part. At this time, the correction plate 21 moves backward and disengages from the workpiece plate 3.

[0035] Working principle: When welding different positions of the H-beam, first start the first electric cylinder 5. The first electric cylinder 5 drives the blocking block 4 to move upward through the workpiece plate 3 so that a part of it protrudes. Then start the motor 11. The motor 11 drives one of the rotating shafts 9 to rotate. The rotating shaft 9 drives one of the reciprocating lead screws 8 to rotate in the support cover 7. At the same time, one of the rotating shafts 9 drives one of the driving gear rings 13. The driving gear ring 13 drives the driven gear 14 to rotate. The driven gear drives the transmission shaft 12 to rotate, and then drives the other driven gear 14 to rotate. And under the rotation of the driven gear 14, it drives the other driving gear ring 13 engaged with it to rotate, driving the other rotating shaft 9 and the reciprocating lead screw 8 to rotate, so that the other lead screw nut 10 moves, and then makes the two moving frames 15 move synchronously. And only one motor 11 can drive the two moving frames 15 to move synchronously, making them move forward to the side of the workpiece plate 3. After the movement is completed, start the second electric cylinder 16. The output end of the second electric cylinder 16 drives the moving frame 15 to move forward, and the pushing frame moves to the top of the workpiece plate 3 and contacts the side of the H-beam, further pushing it. When pushing it, because there is a blocking block 4 on the side of the H-beam to block, the H-beam will be flipped 90°. After the flipping is completed, start the first electric cylinder 5 again. The output end of the first electric cylinder 5 drives the blocking block 4 to move downward. The connecting rod 22 drives the rack 23 to move downward. The rack 23 drives the driven gear 24 engaged with it to rotate. The driven gear 24 drives the rotating shaft 19 and the driving gear ring 20 on the rotating shaft 19 to rotate. The driving gear ring 20 drives the rack 18 to move forward. The rack 18 drives the correction plate 21 to move forward. Then the correction plate 21 pushes the H-beam on the workpiece plate 3 to move forward by one end to the original position, so as to perform welding again. It should be added that a protective cover can be detachably installed above the driving gear ring 13, the driven gear 14, the rack 18, the driving gear ring 20, the rack 23 and the driven gear 24 during welding, so as to ensure meshing during welding and the protective cover can be removed again after welding is completed.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them. Although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present disclosure can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present disclosure, and they should all be covered within the scope of the claims of the present disclosure.

Claims

1. A welding device for H-shaped steel, comprising a welding table (1) and a welder (2), the welder (2) is installed on the welding table (1), and a workpiece plate (3) is fixedly installed at the top of the welding table (1), characterized in that, The top of the welding table (1) is provided with two sliding grooves, and further includes: Blocking blocks (4), there are two blocking blocks (4), and the two blocking blocks (4) are respectively arranged on the workpiece plate (3) through two first electric cylinders (5), and the first electric cylinders (5) are installed at the bottom end of the welding table (1); Turning components, there are two turning components, and the two turning components are respectively arranged on the top of the welding table (1) through two moving components for pushing the H-shaped steel to turn it over; Pushing plates (6), the pushing plates (6) are arranged on the two turning components; Pushing components, the pushing components are arranged on the top of the welding table (1) for pushing the turned-over H-shaped steel to the welding position.

2. The H-shaped steel welding device according to claim 1, characterized in that The moving component includes: Support covers (7), the support covers (7) are fixedly installed on the top of the welding table (1); Reciprocating lead screws (8), the reciprocating lead screws (8) are rotatably installed in the support covers (7); Rotating shafts (9), the rotating shafts (9) are coaxially connected to the reciprocating lead screws (8); Lead screw nuts (10), the lead screw nuts (10) are installed on the reciprocating lead screws (8); Motors (11), there is one motor (11), the motor (11) is installed on one of the support covers (7), and the motor (11) is coaxially connected to one of the rotating shafts (9); Transmission components, the transmission components are arranged on the side of the welding table (1).

3. The H-beam welding device according to claim 2, characterized in that, The transmission component includes: Drive shafts (12), the drive shafts (12) are rotatably installed between the two support covers (7) through support frames; Drive gear rings I (13), there are two drive gear rings I (13), and the two drive gear rings I (13) are respectively fixedly installed on the two rotating shafts (9); Driven gears I (14), there are two driven gears I (14), and the two driven gears I (14) are respectively fixedly installed at both ends of the drive shaft (12), and the two drive gear rings I (13) are respectively meshed with the two driven gears I (14).

4. The H-shaped steel welding device according to claim 3, characterized in that, The turning component includes: Moving frames (15), there are two moving frames (15), and the two moving frames (15) are respectively fixedly installed on the tops of the two lead screw nuts (10); Second electric cylinders (16), the second electric cylinders (16) are respectively installed on the sides of the two moving frames (15), and the pushing plates (6) are fixedly installed on the output ends of the two second electric cylinders (16).

5. A welding device for H-shaped steel according to claim 4, characterized in that, The pushing component includes: Sliding rods (17), there are four sliding rods (17), and every two of the four sliding rods (17) form a group. The two groups of sliding rods (17) are respectively slidably installed in the two sliding grooves of the welding table (1) through sliders; Rack I (18), there are two rack I (18), and the two rack I (18) are respectively fixedly installed on the sides of the two groups of sliding rods (17); Rotating shaft (19), the rotating shaft (19) is rotatably mounted on the side of the workpiece plate (3) through two support plates; Second driving gear ring (20), there are two second driving gear rings (20), both of the two second driving gear rings (20) are fixedly mounted on the rotating shaft (19), and the two second driving gear rings (20) are respectively engaged with the two first racks (18); Straightening plate (21), the straightening plate (21) is fixedly mounted on the tops of the two first racks (18); Driving assembly, the driving assembly is arranged on the sides of the rotating shaft (19) and the blocking block (4).

6. The H-beam welding device according to claim 5, wherein, The driving assembly includes: Connecting rods (22), there are two connecting rods (22), the two connecting rods (22) are respectively fixedly mounted on the sides of the two blocking blocks (4); Second racks (23), there are two second racks (23), the two second racks (23) are respectively fixedly mounted on the sides of the two connecting rods (22); Second driven gears (24), there are two second driven gears (24), the two second driven gears (24) are respectively fixedly mounted at both ends of the rotating shaft (19), and the two second driven gears (24) are respectively engaged with the two second racks (23).

7. A welding device for H-shaped steel according to claim 6, characterized in that, The lowermost ends of the straightening plate (21) and the pushing plate (6) are at the same horizontal position as the top end of the workpiece plate (3).

8. The H-beam welding device according to claim 7, characterized in that, Two through slots are formed in the workpiece plate (3), and the two blocking blocks (4) are respectively installed in the two through slots of the workpiece plate (3) in a penetrating and sliding manner.

9. The H-shaped steel welding device according to claim 8, characterized in that The connecting rod (22) is located between the workpiece plate (3) and the welding table (1).

10. A welding device for H-shaped steel according to claim 9, characterized in that, A chute is formed in the inner bottom end of the support cover (7), and the lead screw nut (10) is slidably mounted in the chute of the support cover (7) through a sliding block.

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