Supporting and positioning device for H-shaped steel column welding

Abstract

The utility model provides a supporting and positioning device for welding an H-shaped steel column, which comprises a base and a console, a fixed L-shaped frame plate is fixedly arranged on one side above the base, a movable L-shaped frame plate is arranged on the other side above the base in a sliding manner, and the movable L-shaped frame plate and the fixed L-shaped frame plate are arranged in a mirror image manner; by means of the overall arrangement, when the H-shaped steel column is welded, the two flange plates and the web of the H-shaped steel column can be supported and limited, the two flange plates are parallel to the ground, the web is perpendicular to the ground, and therefore the joints of the web and the two flange plates can be welded; therefore, the trouble of overturning and adjusting back and forth is avoided, and the device is more convenient, flexible and convenient.

Description

Technical Field

[0001] This utility model relates to the field of H-beam welding, and in particular to a support and positioning device for welding H-beam columns. Background Technology

[0002] H-beams are an economical and efficient structural steel profile with a more optimized cross-sectional area distribution and a more reasonable strength-to-weight ratio. They are named for their cross-section, which resembles the letter "H". During the welding of H-beam columns, two flanges and one web plate need to be joined together. To ensure welding quality and efficiency, specialized support and positioning devices are required.

[0003] However, the existing support and positioning devices for welding H-shaped steel columns require multiple transfers and flips during the welding process to weld at different positions, resulting in cumbersome steps and reduced welding efficiency.

[0004] Therefore, it is essential to invent a support and positioning device for welding H-shaped steel columns. Utility Model Content

[0005] To solve the above technical problems, the present invention provides a support and positioning device for welding H-shaped steel columns. The technical solution adopted is as follows: A support and positioning device for welding H-shaped steel columns includes a base and a control console, wherein: a fixed L-shaped frame plate is fixedly installed on one side above the base, and a movable L-shaped frame plate is slidably installed on the other side above the base, and the movable L-shaped frame plate and the fixed L-shaped frame plate are arranged in mirror positions.

[0006] The upper surfaces of the moving L-frame plate and the fixed L-frame plate are each slidably mounted with a lower flange plate conveyor. One side of the lower flange plate conveyor is slidably connected to the vertical plate corresponding to the moving L-frame plate and the fixed L-frame plate.

[0007] A U-shaped frame is fixedly installed on the inner side of each of the vertical plates of the moving L-shaped frame and the fixed L-shaped frame, and the openings of the two U-shaped frames face each other;

[0008] At least one electric push rod three is fixedly installed on one side inside the opening of each U-shaped frame, and the electric push rod three is arranged parallel to the horizontal plate of the moving L-shaped frame plate and the fixed L-shaped frame plate;

[0009] A web plate conveying platform is slidably installed inside each of the U-shaped frame openings, and the bottom of the web plate conveying platform is fixedly connected to the output end of the electric push rod three.

[0010] An upper flange plate conveyor is slidably installed above each of the U-shaped frames, and one side of the upper flange plate conveyor is slidably connected to the vertical plate corresponding to the moving L-shaped frame plate and the fixed L-shaped frame plate.

[0011] The lower flange plate conveyor and the upper flange plate conveyor have the same structure.

[0012] The control console controls the operation of the support and positioning device for welding the entire H-shaped steel column.

[0013] At least one guide rail is fixedly installed on one side of the upper surface of the base, and the guide rail is slidably connected to the bottom surface of the moving L-frame plate.

[0014] At least one electric push rod four is fixedly installed between the fixed L-frame plate and the horizontal plate of the movable L-frame plate. The housing part of the electric push rod four is fixedly installed in the horizontal plate of the fixed L-frame plate. The output end of the electric push rod four is fixedly connected to the horizontal plate of the movable L-frame plate. The electric push rod four is electrically connected to the control console.

[0015] At least one guide rail and one guide rail are installed on the inner side of the vertical plate of the fixed L-shaped frame plate and the movable L-shaped frame plate, respectively. The guide rail and the guide rail are located on the upper and lower sides of the corresponding U-shaped frame.

[0016] The guide rail is slidably connected to the corresponding lower flange plate conveyor table;

[0017] The second guide rail is slidably connected to the corresponding upper flange plate conveyor platform.

[0018] At least one electric push rod is fixedly installed on the upper surface of each of the fixed L-frame plate and the moving L-frame plate cross plate, and the output end of the electric push rod is fixedly connected to the bottom surface of the corresponding lower flange plate conveyor table.

[0019] The electric push rod is electrically connected to the control console.

[0020] At least one guide rail three is fixedly installed on the upper and lower sides inside the opening of each U-shaped frame, and the guide rail three is slidably connected to the web plate conveyor table.

[0021] At least one electric push rod 2 is fixedly installed above each of the U-shaped frames, and the output end of the electric push rod 2 is fixedly connected to the bottom surface of the corresponding upper flange plate conveyor table;

[0022] The second electric push rod is electrically connected to the control console.

[0023] The lower flange plate conveyor includes a support plate, a side plate, a first rotating roller, a connecting plate, and a second sliding groove. The side plate is fixedly installed on one side above the support plate, and the connecting plate is fixedly installed on the other side of the support plate. Several first rotating rollers are evenly rotated between the connecting plate and the side plate. The upper surface of the side plate is higher than the first rotating roller, and the first rotating roller is higher than the upper surface of the connecting plate.

[0024] The other side of the side plate is provided with a sliding groove two corresponding to the guide rail one, and the side plate is slidably connected to the guide rail one through the sliding groove two.

[0025] The bottom surface of the support plate is fixedly connected to the output end of the corresponding electric push rod.

[0026] One end of each of the rollers is connected to the side plate via a synchronous belt, which is connected to the output end of a motor installed inside the side plate.

[0027] The motor is electrically connected to the control console for communication.

[0028] The web plate conveying table includes a U-shaped plate, a three-way chute, and two rotating rollers. Several rotating rollers are evenly rotatably installed in the opening of the U-shaped plate. A three-way chute corresponding to the guide rail is opened on the outer side of both sides of the opening of the U-shaped plate. The U-shaped plate is slidably connected to the corresponding guide rail through the three-way chute.

[0029] The end of each of the rotating rollers two connected to the U-shaped plate is engaged with the synchronous belt two, and the synchronous belt two is engaged with the output end of the motor two installed inside the U-shaped plate;

[0030] The second motor is electrically connected to the control console for communication.

[0031] The bottom surface of the moving L-shaped frame plate is provided with a sliding groove corresponding to the guide rail four, and the moving L-shaped frame plate is slidably connected to the guide rail four through the sliding groove one.

[0032] Compared with the prior art, the advantages of this utility model are:

[0033] The overall design of this utility model allows for the separate support and positioning of the two flange plates and the web plate of the H-shaped steel column during welding. It ensures that the two flange plates are parallel to the ground and the web plate is perpendicular to the ground, facilitating welding at the connection between the web plate and the two flange plates. This avoids the hassle of repeated flipping and adjustment, making the process more convenient, flexible, and efficient. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall support structure for the H-shaped steel column of this utility model.

[0035] Figure 2 This is a schematic diagram of the overall structure of the present invention without support for the H-shaped steel column.

[0036] Figure 3 This is a schematic diagram of the moving L-shaped frame structure of this utility model.

[0037] Figure 4 This is a schematic diagram of the lower flange plate conveyor structure of this utility model.

[0038] Figure 5 This is a schematic diagram of the web plate conveyor structure of this utility model.

[0039] In the picture:

[0040] 1. Base, 2. Fixed L-shaped frame plate, 3. Moving L-shaped frame plate, 4. U-shaped frame, 5. Lower flange plate conveyor, 51. Support plate, 52. Side plate, 53. Rotary roller 1, 54. Connecting plate, 55. Slide 2, 6. Web plate conveyor, 61. U-shaped plate, 62. Slide 3, 63. Rotary roller 2, 7. Upper flange plate conveyor, 8. Slide 1, 9. Guide rail 1, 10. Electric push rod 1, 11. Electric push rod 2, 12. Electric push rod 3, 13. Guide rail 3, 14. Guide rail 4, 15. Control console, 16. Electric push rod 4, 17. H-shaped steel column, 18. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0042] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0043] The present invention will be further described below with reference to the accompanying drawings: Example

[0044] Reference Figure 1-5A support and positioning device for welding H-shaped steel columns includes a base 1 and a control console 16. A fixed L-shaped support plate 2 is fixedly installed on one side above the base 1, and a movable L-shaped support plate 3 is slidably installed on the other side above the base 1. The distance between the fixed L-shaped support plate 2 and the movable L-shaped support plate 3 can be adjusted by moving the movable L-shaped support plate 3, so as to support the web of H-shaped steel columns 18 with different thicknesses and flanges with different widths. The movable L-shaped support plate 3 and the fixed L-shaped support plate 2 are set in mirror positions. With this structure, the contact between the web and flange of the H-shaped steel column 18 will not be affected when supporting the web and flange.

[0045] The upper surfaces of the horizontal plates of the moving L-frame plate 3 and the fixed L-frame plate 2 are each slidably mounted with a lower flange plate conveying table 5 so as to support and convey the lower flange plate of the H-shaped steel column 18 through the lower flange plate conveying table 5. One side of the lower flange plate conveying table 5 is slidably connected to the vertical plate of the corresponding moving L-frame plate 3 and the fixed L-frame plate 2 so as to adjust the position of the lower flange plate conveying table 5.

[0046] U-shaped frames 4 are fixedly installed on the inner side of the vertical plates of the moving L-shaped frame plate 3 and the fixed L-shaped frame plate 2, with the openings of the two U-shaped frames 4 facing each other, so as to support the web plate conveyor table 6 through the U-shaped frames 4.

[0047] At least one electric push rod 13 is fixedly installed on one side inside the opening of each U-shaped frame 4. The electric push rod 13 is arranged parallel to the horizontal plate of the moving L-shaped frame plate 3 and the fixed L-shaped frame plate 2. A web plate conveying platform 6 is slidably installed inside the opening of each U-shaped frame 4. The bottom of the web plate conveying platform 6 is fixedly connected to the output end of the electric push rod 13. The distance between the two web plate conveying platforms 6 can be adjusted by the electric push rod 13 so as to support and convey the web plates of H-shaped steel columns 18 with different thicknesses.

[0048] Each U-shaped frame 4 has an upper flange plate conveying platform 7 slidably installed above it so as to support and convey the upper flange plate of the H-shaped steel column 18. One side of the upper flange plate conveying platform 7 is slidably connected to the vertical plate of the corresponding moving L-shaped frame plate 3 and fixed L-shaped frame plate 2 so as to adjust the position of the upper flange plate conveying platform 7.

[0049] The lower flange plate conveyor 5 and the upper flange plate conveyor 7 have the same composition and structure.

[0050] The control console 16 controls the operation of the support and positioning device for welding the entire H-shaped steel column;

[0051] Specifically, the controller inside the console 16 uses existing technology such as a PLC controller. Since the PLC controller is a very mature technology, it will not be discussed in detail here.

[0052] In this embodiment, at least one guide rail 15 is fixedly installed on one side of the upper surface of the base 1. The guide rail 15 is slidably connected to the bottom surface of the horizontal plate of the moving L-shaped frame plate 3 so as to limit the moving L-shaped frame plate 3 through the guide rail 15, ensure the stability of the moving L-shaped frame plate 3 when it moves, and prevent the trajectory from changing when it moves.

[0053] In this embodiment, at least one electric push rod 17 is fixedly installed between the fixed L-shaped frame plate 2 and the horizontal plate of the movable L-shaped frame plate 3. The housing part of the electric push rod 17 is fixedly installed in the horizontal plate of the fixed L-shaped frame plate 2, and the output end of the electric push rod 17 is fixedly connected to the horizontal plate of the movable L-shaped frame plate 3 so that the distance between the fixed L-shaped frame plate 2 and the movable L-shaped frame plate 3 can be adjusted according to the specifications of the H-shaped steel column 18. The electric push rod 17 is electrically connected to the control console 16.

[0054] In this embodiment, at least one guide rail 9 and one guide rail 10 are installed on the inner side of the vertical plate of the fixed L-frame plate 2 and the movable L-frame plate 3, respectively. The guide rail 9 and the guide rail 10 are located on the upper and lower sides of the corresponding U-shaped frame 4.

[0055] The guide rail 9 is slidably connected to the corresponding lower flange plate conveyor 5 so as to limit the lower flange plate conveyor 5 through the guide rail 9, ensure the stability of the lower flange plate conveyor 5 when it moves, and prevent the trajectory from changing during the movement.

[0056] The guide rail 2 10 is slidably connected to the corresponding upper flange plate conveyor 7 so as to limit the upper flange plate conveyor 7 through the guide rail 2 10, ensure the stability of the upper flange plate conveyor 7 when it moves, and prevent the trajectory from changing during movement.

[0057] In this embodiment, at least one electric push rod 11 is fixedly installed on the upper surface of the fixed L-frame plate 2 and the moving L-frame plate 3. The output end of the electric push rod 11 is fixedly connected to the bottom surface of the corresponding lower flange plate conveyor 5 so that the distance between the lower flange plate conveyor 5 and the web plate conveyor 6 can be adjusted by the electric push rod 11 according to the specifications of the H-shaped steel column 18.

[0058] The electric actuator 11 is electrically connected to the control console 16.

[0059] In this embodiment, at least one guide rail 3 14 is fixedly installed on the upper and lower sides inside the opening of each U-shaped frame 4. The guide rail 3 14 is slidably connected to the web plate conveyor 6 so as to limit the web plate conveyor 6 through the guide rail 3 14, ensure the stability of the web plate conveyor 6 when it moves, and prevent the trajectory from changing during movement.

[0060] In this embodiment, at least one electric push rod 12 is fixedly installed above each U-shaped frame 4. The output end of the electric push rod 12 is fixedly connected to the bottom surface of the corresponding upper flange plate conveyor table 7 so that the distance between the upper flange plate conveyor table 7 and the web plate conveyor table 6 can be adjusted by the electric push rod 12 according to the specifications of the H-shaped steel column 18.

[0061] The electric push rod 12 is electrically connected to the control console 16.

[0062] In this embodiment, the lower flange plate conveying table 5 includes a support plate 51, a side plate 52, a first rotating roller 53, a connecting plate 54, and a second sliding groove 55. The side plate 52 is fixedly installed on one side above the support plate 51, and the connecting plate 54 is fixedly installed on the other side of the support plate 51. Several first rotating rollers 53 are evenly rotatably installed between the connecting plate 54 and the side plate 52, so that the support plate 51, the side plate 52, and the connecting plate 54 can support the first rotating rollers 53 and ensure the stability of the rotation of each first rotating roller 53. The upper surface of the side plate 52 is higher than the first rotating roller 53, and the first rotating roller 53 is higher than the upper surface of the connecting plate 54, so that when the first rotating roller 53 supports the flange plate of the H-shaped steel column 18, it can be limited by the side plate 52 and the side of the flange plate, and at the same time, it can prevent the connecting plate from contacting the flange plate.

[0063] The other side of the side plate 52 is provided with a second groove 55 corresponding to the first guide rail 9. The side plate 52 is slidably connected to the corresponding first guide rail 9 through the second groove 55 to ensure stability and smoothness during the sliding process.

[0064] The bottom surface of the support plate 51 is fixedly connected to the output end of the corresponding electric push rod 11;

[0065] Each roller 53 is connected to the side plate 52 at one end by a synchronous belt. The synchronous belt is connected to the output end of a motor installed inside the side plate 52 so that each roller 53 can be driven to rotate simultaneously by the motor and the synchronous belt, thereby conveying the flange plate.

[0066] The motor is electrically connected to the control console 16.

[0067] In this embodiment, the web plate conveying table 6 includes a U-shaped plate 61, a sliding groove 62, and a rotating roller 63. Several rotating rollers 63 are evenly rotatably installed in the opening of the U-shaped plate 61. Part of the rotating rollers 63 protrudes from the opening of the U-shaped plate 61 so that only the rotating rollers 63 contact the web of the H-shaped steel column 18. Sliding grooves 62 corresponding to guide rails 14 are opened on the outside of both sides of the opening of the U-shaped plate 61. The U-shaped plate 61 is slidably connected to the corresponding guide rails 14 through the sliding grooves 62 to ensure the stability and smoothness of the sliding process.

[0068] The end of each of the two rotating rollers 63 connected to the U-shaped plate 61 is connected by a synchronous belt 2. The synchronous belt 2 is connected to the output end of the motor 2 installed inside the U-shaped plate 61, so that the motor 2 and the synchronous belt 2 can drive each of the two rotating rollers 63 to rotate simultaneously, thereby conveying the flange plate.

[0069] Motor 2 is electrically connected to console 16 for communication.

[0070] In this embodiment, the bottom surface of the horizontal plate of the movable L-frame plate 3 is provided with a sliding groove 8 corresponding to the guide rail 4 15. The movable L-frame plate 3 is slidably connected to the guide rail 4 15 through the sliding groove 8 to ensure the stability and smoothness of their sliding process.

[0071] Specifically, when welding the H-shaped steel column 18, the distance between the fixed L-frame plate 2 and the movable L-frame plate 3 is adjusted by electric push rod 4 17 according to the width of the flange plate of the H-shaped steel column 18, so that the distance between them corresponds to the width of the flange plate of the H-shaped steel column 18.

[0072] Based on the thickness of the web of the H-shaped steel column 18, the distance between the two web conveying platforms 6 is adjusted by electric push rod 3 13 so that the distance between them corresponds to the thickness of the web.

[0073] Based on the height of the web plate, the distances between the corresponding lower flange plate conveyor platform 5 and upper flange plate conveyor platform 7 and web plate conveyor platform 6 are adjusted by electric push rod 11 and electric push rod 22 respectively, so that the distances between them correspond to the height of the web plate.

[0074] After adjustment, place the upper flange plate of the H-beam steel column 18 on the upper flange plate conveyor table 7 between the L-frame plate 2 and the moving L-frame plate 3. Then place the lower flange plate of the H-beam steel column 18 on the lower flange plate conveyor table 5 between the L-frame plate 2 and the moving L-frame plate 3. Finally, place the web plate of the H-beam steel column 18 between the two web plate conveyor tables 6, ensuring that one end of the upper flange plate, lower flange plate, and web plate are flush, thus forming an H-beam steel column 18. Figure 1 As shown;

[0075] The H-shaped steel column 18 can be conveyed simultaneously through the lower flange plate conveyor 5, the web plate conveyor 6, and the upper flange plate conveyor 7, so that one end of the H-shaped steel column 18 can protrude from between the lower flange plate conveyor 5, the web plate conveyor 6, and the upper flange plate conveyor 7. In this way, the upper flange plate and the connection between the lower flange plate and the web plate can be welded while conveying, thus avoiding the trouble of flipping back and forth.

[0076] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A support and positioning device for welding H-shaped steel columns, characterized in that: Includes a base (1) and a control console (16), wherein: a fixed L-shaped frame plate (2) is fixedly installed on one side above the base (1), and a movable L-shaped frame plate (3) is slidably installed on the other side above the base (1), and the movable L-shaped frame plate (3) and the fixed L-shaped frame plate (2) are positioned in a mirror image. The upper surfaces of the horizontal plates of the moving L-frame plate (3) and the fixed L-frame plate (2) are each slidably equipped with a lower flange plate conveyor (5), and one side of the lower flange plate conveyor (5) is slidably connected to the vertical plate corresponding to the moving L-frame plate (3) and the fixed L-frame plate (2). A U-shaped frame (4) is fixedly installed on the inner side of the vertical plate of the moving L-shaped frame plate (3) and the fixed L-shaped frame plate (2), and the openings of the two U-shaped frames (4) face each other; At least one electric push rod (13) is fixedly installed on one side inside the opening of each U-shaped frame (4); A web plate conveyor (6) is slidably installed inside the opening of each U-shaped frame (4), and the bottom of the web plate conveyor (6) is fixedly connected to the output end of the electric push rod three (13). Each of the U-shaped frames (4) is slidably mounted with an upper flange plate conveyor (7) above it. One side of the upper flange plate conveyor (7) is slidably connected to the vertical plate corresponding to the moving L-frame plate (3) and the fixed L-frame plate (2). The lower flange plate conveyor (5) and the upper flange plate conveyor (7) have the same composition structure; The control console (16) controls the operation of the support and positioning device for welding the entire H-shaped steel column.

2. The support and positioning device for welding H-shaped steel columns as described in claim 1, characterized in that: At least one guide rail (15) is fixedly installed on one side of the upper surface of the base (1), and the guide rail (15) is slidably connected to the bottom surface of the horizontal plate of the moving L frame plate (3).

3. The support and positioning device for welding H-shaped steel columns as described in claim 2, characterized in that: At least one electric push rod four (17) is fixedly installed between the fixed L-frame plate (2) and the horizontal plate of the movable L-frame plate (3), and the electric push rod four (17) is electrically connected to the control console (16).

4. The support and positioning device for welding H-shaped steel columns as described in claim 3, characterized in that: At least one guide rail (9) and one guide rail (10) are installed on the inner side of the vertical plate of the fixed L-shaped frame plate (2) and the movable L-shaped frame plate (3), respectively. The guide rail (9) and the guide rail (10) are located on the upper and lower sides of the corresponding U-shaped frame (4). The guide rail (9) is slidably connected to the corresponding lower flange plate conveyor (5); The guide rail 2 (10) is slidably connected to the corresponding upper flange plate conveyor (7).

5. The support and positioning device for welding H-shaped steel columns as described in claim 4, characterized in that: At least one electric push rod (11) is fixedly installed on the upper surface of the horizontal plate of the fixed L-frame plate (2) and the moving L-frame plate (3), and the output end of the electric push rod (11) is fixedly connected to the bottom surface of the corresponding lower flange plate conveyor (5). The electric push rod (11) is electrically connected to the control console (16).

6. The support and positioning device for welding H-shaped steel columns as described in claim 4, characterized in that: At least one guide rail (14) is fixedly installed on the upper and lower sides inside the opening of each U-shaped frame (4), and the guide rail (14) is slidably connected to the web plate conveyor (6).

7. The support and positioning device for welding H-shaped steel columns as described in claim 6, characterized in that: At least one electric push rod (12) is fixedly installed above each of the U-shaped frames (4), and the output end of the electric push rod (12) is fixedly connected to the bottom surface of the corresponding upper flange plate conveyor (7). The electric push rod 2 (12) is electrically connected to the control console (16).

8. The support and positioning device for welding H-shaped steel columns as described in claim 5, characterized in that: The lower flange plate conveyor (5) includes a support plate (51), a side plate (52), a first rotating roller (53), a connecting plate (54), and a second sliding groove (55). The side plate (52) is fixedly installed on one side above the support plate (51), and the connecting plate (54) is fixedly installed on the other side of the support plate (51). Several first rotating rollers (53) are evenly rotated between the connecting plate (54) and the side plate (52). The upper surface of the side plate (52) is higher than the first rotating roller (53), and the first rotating roller (53) is higher than the upper surface of the connecting plate (54). The other side of the side plate (52) is provided with a second groove (55) corresponding to the first guide rail (9), and the side plate (52) is slidably connected to the first guide rail (9) through the second groove (55); The bottom surface of the support plate (51) is fixedly connected to the output end of the corresponding electric push rod (11); The end of each of the rollers (53) connected to the side plate (52) is engaged with a synchronous belt, which is engaged with the output end of a motor installed inside the side plate (52); The motor is electrically connected to the control console (16).

9. The support and positioning device for welding H-shaped steel columns as described in claim 6, characterized in that: The web plate conveying table (6) includes a U-shaped plate (61), a sliding groove three (62) and a rotating roller two (63). Several rotating roller two (63) are evenly installed in the opening of the U-shaped plate (61). Sliding groove three (62) corresponding to the guide rail three (14) is opened on the outside of both sides of the opening of the U-shaped plate (61). The U-shaped plate (61) is slidably connected to the corresponding guide rail three (14) through the sliding groove three (62). The end of each of the rollers (63) connected to the U-shaped plate (61) is connected by a synchronous belt, which is connected to the output end of the motor installed inside the U-shaped plate (61). The second motor is electrically connected to the control console (16).

10. The support and positioning device for welding H-shaped steel columns as described in claim 5, characterized in that: The bottom surface of the horizontal plate of the moving L-shaped frame plate (3) is provided with a sliding groove (8) corresponding to the guide rail (15). The moving L-shaped frame plate (3) is slidably connected to the guide rail (15) through the sliding groove (8).

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