Large-size high-frequency longitudinal welded pipe equipment

Abstract

The large-size high-frequency longitudinal welded pipe equipment comprises a workbench, a connecting groove is formed in the middle of the workbench, a supporting plate is arranged in the connecting groove in an up-down movable mode, a connecting plate is movably connected to the upper end of the supporting plate in a left-right mode, and a welding head is rotationally connected to the upper end of the connecting plate through a rotating shaft; the inclination angle of the welding head can be adjusted; and a plurality of support connecting rods are arranged. According to the overall structure provided by the embodiment of the invention, due to the arrangement of the balls, displacement of the welded pipeline is more convenient, the welding position of the welded pipeline can be conveniently adjusted through the roller bodies for supporting the rotating wheels, and a first electric telescopic rod is started to drive a pressing plate to move downwards; and therefore, a welded pipeline extrudes a supporting rotating wheel and a supporting connecting rod to move downwards, the lower portion of the welded pipeline is supported at the upper end of an elastic rubber cushion block, and the welded pipeline is placed and positioned more stably.

Description

Technical Field

[0001] The present application relates to the field of welding technology, and in particular to a large-size high-frequency straight seam welded pipe equipment. Background Art

[0002] The welding principle of high-frequency straight seam welded pipes is mainly to use the skin effect and proximity effect of high-frequency current to achieve welding. When high-frequency current passes through the weldment, the energy is mainly concentrated on the surface of the weldment. This characteristic can be used to quickly heat the surface metal of the weldment, thereby achieving welding. Specifically, the high-frequency current produces local heating in the weldment, heating the edge of the tube blank to a molten state, and then pressure welding is performed under the action of the extrusion roller to eventually form a strong weld. The application areas of high-frequency straight seam welded pipes include civil construction, petrochemicals, light industry and other sectors. High-frequency welded steel pipes have the advantages of no need for weld fillers, no welding spatter, narrow welding heat-affected zone, beautiful welding shape, and good welding mechanical properties. Therefore, they are widely used in these fields; When high-frequency straight seam welding is performed on large-sized pipes, it is not convenient to adjust the position of the pipes. The welding position is adjusted by simply using a rolling roller to drive the placed pipes to rotate, but the position in the welding direction is not convenient. At the same time, the pipes are fixed by upper extrusion at the upper end of the rollers. Due to the instability of the rollers, the placement of the pipes is unstable. Therefore, we propose a large-sized high-frequency straight seam pipe welding equipment. Summary of the invention

[0003] The present application provides a large-size high-frequency straight seam welded pipe equipment to solve the above-mentioned problems.

[0004] The present application provides a large-size high-frequency straight seam welded pipe equipment, comprising: A workbench, wherein a connecting groove is provided in the middle of the workbench, a supporting plate is provided inside the connecting groove so as to be movable up and down, a connecting plate is movably connected to the upper end of the supporting plate so as to be movable left and right, a welding head is rotatably connected to the upper end of the connecting plate through a rotating shaft, and the welding head can adjust the inclination angle; A supporting connecting rod, wherein a plurality of the supporting connecting rods are provided, and the supporting connecting rods are equidistantly and movably plugged into the front and rear sides of the workbench, and the upper end of the supporting connecting rod is rotatably connected to a supporting rotating wheel, and the outer side of the supporting rotating wheel is evenly inlaid with a plurality of balls in a circular array; Support rods, at least four of which are provided, fixedly connected to the upper end of the workbench, and located on the opposite side of the support connecting rod, and elastic rubber pads are fixedly connected to the upper ends of the support rods; A connecting frame, wherein at least two connecting frames are provided, and the connecting frames are fixedly connected to the upper end of the workbench at equal distances, and a first electric telescopic rod is fixedly connected to the middle part of the upper end of the connecting frame, and a pressure plate is fixedly connected to the lower end of the transmission rod of the first electric telescopic rod.

[0005] Preferably, second electric telescopic rods are fixedly connected to the left and right sides of the lower end of the support plate, and the lower end of the second electric telescopic rod is fixedly connected to the lower end of the inner cavity of the connecting groove.

[0006] Preferably, the front and rear sides of the upper end of the support plate are fixedly connected with slide rails, the upper side of the slide rails is movably provided with a slide rod, and the upper end of the slide rod is fixedly connected to the lower end of the connecting plate.

[0007] Preferably, the inner side surface of the sliding rod is fixedly connected to a motor, the transmission rod of the motor is fixedly sleeved with a gear, the lower end of the gear is meshingly connected to a rack, and the rack is fixedly connected to the upper end of the support plate.

[0008] Preferably, the lower end of the connecting plate is also fixedly connected to a welding host, and the output port of the welding host is connected to a welding head.

[0009] Preferably, an adjustment mechanism is fixedly connected to the middle left side of the upper end of the connecting plate, and the adjustment mechanism includes a connecting ear plate, a connecting column, a block, a first adjusting screw, a connecting plate and a second adjusting screw. The lower end of the connecting ear plate is fixedly connected to the upper end of the connecting plate, the middle part of the connecting ear plate is rotatably connected to the connecting column through a rotating shaft, the upper end of the connecting column is fixedly connected with a block, the left end of the connecting ear plate is fixedly connected to the connecting plate, the middle part of the upper side of the connecting plate is threadedly plugged with the second adjusting screw, and the second adjusting screw is plugged into the lower end of the block, the lower left end of the connecting ear plate is fixedly connected to the connecting plate, and the middle part of the connecting plate is threadedly plugged with the first adjusting screw, and the first adjusting screw is plugged into the lower end of the connecting column.

[0010] Preferably, a welding head is fixedly connected to the upper end of the connecting column.

[0011] Preferably, the middle rotating shafts of the four supporting rotating wheels on the left and right sides are fixedly connected to a driving motor, and the driving motor is fixedly connected to the outer side of the supporting connecting rod.

[0012] Preferably, the lower ends of the supporting connecting rods are fixedly connected to the limiting plates, the middle parts of the lower ends of the limiting plates are fixedly connected to cylindrical rods, the lower parts of the cylindrical rods are movably inserted in the middle parts of the limiting frame plates, the outer sides of the cylindrical rods are sleeved with springs inside the limiting frame plates, and the upper ends of the limiting frame plates are fixedly connected to the lower end of the workbench.

[0013] Preferably, the supporting wheel includes a roller body, a connecting block, a ball and a rotating connecting shaft. The middle part of the roller body is plugged into the connecting shaft, and a number of connecting blocks are evenly inlaid on the outside of the roller body. The connecting cavity opened in the middle of the connecting block is rotatably connected to the ball through the rotating connecting shaft, and the rolling direction of the ball is left and right.

[0014] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: In the overall structure provided by the embodiment of the present application, the spring is always in an extruded state, and the top of the supporting wheel at the upper end of the supporting connecting rod is higher than the upper end of the elastic rubber pad. Then, the pipe to be welded is placed on the upper end of the two supporting wheels on the left or right side, and then the welded pipe is pushed to move to the left or right, so as to move the welded pipe to a suitable position. Due to the setting of the ball, the displacement of the welded pipe is more convenient, and the roller body of the supporting wheel can conveniently adjust the welding position of the welded pipe. Then, the first electric telescopic rod is started to drive the pressure plate, so that the pressure plate squeezes the welded pipe downward, so that the welded pipe squeezes the supporting wheel and the supporting connecting rod to move downward, so that the lower part of the welded pipe is supported on the upper end of the elastic rubber pad, so that the placement and positioning of the welded pipe is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is an overall structural diagram of the support plate of the present invention; Figure 3 This is the overall structural diagram of the support connecting rod of the present invention; Figure 4 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 5 It is a cross-sectional view of the connecting plate of the present invention; Figure 6 It is a cross-sectional view of the supporting wheel of the present invention.

[0018] In the figure: 1. workbench; 2. connecting groove; 3. support plate; 4. connecting plate; 5. adjustment mechanism; 51. connecting ear plate; 52. connecting column; 53. block; 54. first adjusting screw; 6. support rod; 7. support connecting rod; 8. support rotating wheel; 81. wheel body; 82. connecting block; 83. ball; 84. rotating connecting shaft; 9. connecting frame; 10. first electric telescopic rod; 11. pressure plate; 12. elastic rubber pad; 13. driving motor; 14. limiting frame plate; 15. cylindrical rod; 16. spring; 17. limiting plate; 18. welding host; 19. motor; 20. gear; 21. sliding rod; 22. welding head; 23. second electric telescopic rod; 24. slide rail; 25. rack. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] Various embodiments of the present application may exist in the form of a range. It should be understood that the description in the form of a range is only for convenience and simplicity and should not be understood as a hard limit to the scope of the present application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single values ​​within the range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which are applicable regardless of the range. In addition, whenever a numerical range is indicated in the present application, it is meant to include any quoted numbers (fractions or integers) within the indicated range. Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application, etc., can be purchased from the market or can be prepared by existing equipment.

[0021] In the present application, in the absence of any contrary description, the directional words used, such as "upper" and "lower", are specifically the directions of the drawings in the accompanying drawings. In addition, in the present application, the terms "include", "comprise", etc. refer to "including but not limited to". In the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the present application, "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. Wherein A, B can be singular or plural. In the present application, "at least one" refers to one or more, and "plural" refers to two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of singular items or plural items. For example, "at least one of a, b, or c" or "at least one of a, b and c" can both mean: a, b, c, ab, i.e. a and b, ac, bc, or abc, where a, b, c can be single or plural, respectively.

[0022] like Figure 1-Figure 6 As shown: This embodiment of the application provides a large-size high-frequency straight seam welded pipe equipment, including: A workbench 1, wherein a connecting groove 2 is provided in the middle of the workbench 1, a supporting plate 3 is provided inside the connecting groove 2 so as to be movable up and down, a connecting plate 4 is movably connected to the upper end of the supporting plate 3 so as to be movable left and right, a welding head 22 is rotatably connected to the upper end of the connecting plate 4 through a rotating shaft, and the welding head 22 can adjust the inclination angle; A supporting connecting rod 7, wherein a plurality of supporting connecting rods 7 are provided, and the supporting connecting rods 7 are equidistantly and movably plugged into the front and rear sides of the workbench 1, and the upper end of the supporting connecting rod 7 is rotatably connected to a supporting rotating wheel 8, and the outer side of the supporting rotating wheel 8 is uniformly inlaid with a plurality of balls 83 in a circular array; Support rods 6, at least four of which are provided, fixedly connected to the upper end of the workbench 1, and located on the opposite side of the supporting connecting rod 7, and the upper ends of the support rods 6 are fixedly connected with elastic rubber pads 12; A connecting frame 9, wherein at least two connecting frames 9 are provided, wherein the connecting frames 9 are equidistantly fixedly connected to the upper end of the workbench 1, a first electric telescopic rod 10 is fixedly connected to the middle of the upper end of the connecting frame 9, and a pressing plate 11 is fixedly connected to the lower end of the transmission rod of the first electric telescopic rod 10.

[0023] Specifically, the first electric telescopic rod 10 is started, thereby driving the pressing plate 11, so that the pressing plate 11 presses the welded pipe downward, so that the welded pipe squeezes the support wheel 8 and the support connecting rod 7 to move downward, so that the lower part of the welded pipe is supported on the upper end of the elastic rubber pad, so that the placement and positioning of the welded pipe is more stable. After the welded pipe is stably placed, the second electric telescopic rod 23 is started, and the second electric telescopic rod 23 drives the support plate 3 to move up and down, so as to adjust the position of the support plate 3, and adjust the position of the welding head 22; After adjusting the height position of the welding head 22, the first adjusting screw 54 and the second adjusting screw 56 are manually rotated to adjust the inclination angle of the connecting column 52, thereby adjusting the inclination angle of the welding head 22, so that the welding head 22 is adjusted to a suitable welding angle.

[0024] like Figure 2 As shown: the left and right sides of the lower end of the support plate 3 are fixedly connected with the second electric telescopic rod 23 , and the lower end of the second electric telescopic rod 23 is fixedly connected to the lower end of the inner cavity of the connecting groove 2 .

[0025] Specifically, the second electric telescopic rod 23 adopts an existing telescopic rod on the market, and the second electric telescopic rod 23 can drive the support plate 3 to move up and down.

[0026] like Figure 2 As shown: the front and rear sides of the upper end of the support plate 3 are fixedly connected with a slide rail 24 , the upper side of the slide rail 24 is movably provided with a slide rod 21 , and the upper end of the slide rod 21 is fixedly connected to the lower end of the connecting plate 4 .

[0027] Specifically, the slide rail 24 is the track along which the slide rod 21 moves.

[0028] like Figure 2 As shown: the inner side surface of the sliding rod 21 is fixedly connected with the motor 19, the transmission rod of the motor 19 is fixedly sleeved with a gear 20, the lower end of the gear 20 is meshedly connected with a rack 25, and the rack 25 is fixedly connected to the upper end of the support plate 3.

[0029] Specifically, the motor 19 adopts an existing motor on the market, which is a prior art. The motor 19 drives the gear 20 to rotate, thereby causing the connecting plate 4 to move.

[0030] like Figure 5 As shown, the lower end of the connecting plate 4 is also fixedly connected to a welding host 18 , and the output port of the welding host 18 is connected to a welding head 22 .

[0031] Specifically, the welding host 18 adopts existing equipment on the market, which is the existing technology.

[0032] like Figure 4As shown: an adjusting mechanism 5 is fixedly connected to the middle left portion of the upper end of the connecting plate 4, and the adjusting mechanism 5 comprises a connecting ear plate 51, a connecting column 52, a block 53, a first adjusting screw 54, a connecting plate 55 and a second adjusting screw 56. The lower end of the connecting ear plate 51 is fixedly connected to the upper end of the connecting plate 4, the middle portion of the connecting ear plate 51 is rotatably connected to the connecting column 52 via a rotating shaft, the upper end of the connecting column 52 is fixedly connected to the block 53, the left end of the connecting ear plate 51 is fixedly connected to the connecting plate 55, the middle portion of the upper side of the connecting plate 55 is threadedly plugged with the second adjusting screw 56, and the second adjusting screw 56 is plugged into the lower end of the block 53, the lower left end of the connecting ear plate 51 is fixedly connected to the connecting plate, and the middle portion of the connecting plate is threadedly plugged with the first adjusting screw 54, and the first adjusting screw 54 is plugged into the lower end of the connecting column 52.

[0033] Specifically, the angle of the connecting column 52 can be adjusted by manually adjusting the length of the first adjusting screw 54 and the second adjusting screw 56 , thereby adjusting the inclination angle of the welding head 22 .

[0034] like Figure 4 As shown: the upper end of the connecting column 52 is fixedly connected with the welding head 22.

[0035] Specifically, the welding head 22 adopts the existing welding head on the market, and the welding head is used to weld the pipeline.

[0036] like Figure 3 As shown: the middle rotating shafts of the four supporting rotating wheels 8 on the left and right sides are fixedly connected to the driving motor 13, and the driving motor 13 is fixedly connected to the outer side of the supporting connecting rod 7.

[0037] Specifically, the driving motor 13 adopts an existing motor on the market, and the driving motor 13 is connected to an external power supply through a switch, and the driving motor 13 drives the supporting wheel 8 to rotate.

[0038] like Figure 3 As shown: the lower ends of the supporting connecting rods 7 are fixedly connected to the limiting plates 17, the middle parts of the lower ends of the limiting plates 17 are fixedly connected to the cylindrical rods 15, the lower parts of the cylindrical rods 15 are movably inserted in the middle parts of the limiting frame plates 14, the outer sides of the cylindrical rods 15 are sleeved with springs 16 inside the limiting frame plates 14, and the upper ends of the limiting frame plates 14 are fixedly connected to the lower ends of the workbench 1.

[0039] Specifically, the spring 16 is always in an extruded state. When the supporting connecting rod 7 is extruded downward, the spring 16 is compressed, thereby causing the supporting connecting rod 7 to move downward.

[0040] like Figure 6As shown: the supporting wheel 8 includes a roller body 81, a connecting block 82, a ball 83 and a rotating connecting shaft 84. The middle part of the roller body 81 is plugged into the connecting shaft, and a plurality of connecting blocks 82 are evenly inlaid on the outer side of the roller body 81. The connecting cavity opened in the middle part of the connecting block 82 is rotatably connected to the ball 83 through the rotating connecting shaft 84, and the rolling direction of the ball 83 is left and right.

[0041] Specifically, the roller body 81 supporting the rotating wheel 8 can conveniently adjust the welding position of the welded pipe. When adjusting, the driving motor 13 is started to drive the roller body 81 to rotate, so that the welding pipe placed on the upper end can be rotated to adjust the welding position of the welding pipe. When the welding position of the pipe is adjusted, the pressure plate 11 does not squeeze the welded pipe.

[0042] Principle of use: When the equipment is in use, the spring 16 is always in an extruded state, and the top of the support wheel 8 at the upper end of the support connecting rod 7 is higher than the upper end of the elastic rubber pad 12. Then, the pipe to be welded is placed on the upper end of the two support wheels 8 on the left or right side, and then the welded pipe is pushed to move to the left or right, so as to move the welded pipe to a suitable position. Due to the setting of the ball 83, the displacement of the welded pipe is more convenient. Then, the first electric telescopic rod 10 is started to drive the pressing plate 11, so that the pressing plate 11 squeezes the welded pipe downward, so that the welded pipe squeezes the support wheel 8 and the support connecting rod 7 downward, so that the lower part of the welded pipe is supported on the upper end of the elastic rubber pad, so that the placement and positioning of the welded pipe is more stable. After the welding pipe is placed stably, the second electric telescopic rod 23 is started, and the second electric telescopic rod 23 drives the support plate 3 to move up and down, thereby adjusting the position of the support plate 3 and adjusting the position of the welding head 22; After adjusting the height position of the welding head 22, the first adjusting screw 54 and the second adjusting screw 56 are manually rotated to adjust the inclination angle of the connecting column 52, thereby adjusting the inclination angle of the welding head 22, so that the welding head 22 is adjusted to a suitable welding angle.

[0043] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. It will be apparent to those skilled in the art that various modifications to these embodiments are possible, and the general principles defined in the present application can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown in the present application, but will conform to the widest scope consistent with the principles and novel features applied for by the present application.

Claims

1. A large-size high-frequency straight seam welded pipe equipment, characterized in that: include: A workbench (1), wherein a connecting groove (2) is provided in the middle of the workbench (1), a supporting plate (3) is provided inside the connecting groove (2) so as to be movable up and down, a connecting plate (4) is movably connected to the upper end of the supporting plate (3) so as to be movable left and right, and a welding head (22) is rotatably connected to the upper end of the connecting plate (4) via a rotating shaft, and the welding head (22) can adjust the inclination angle; A supporting connecting rod (7), wherein a plurality of the supporting connecting rods (7) are provided, and the supporting connecting rods (7) are movably plugged into the front and rear sides of the workbench (1) at equal intervals, and the upper end of the supporting connecting rod (7) is rotatably connected to a supporting rotating wheel (8), and the outer side of the supporting rotating wheel (8) is evenly inlaid with a plurality of balls (83) in a circular array; Support rods (6), at least four of which are provided, the support rods (6) being fixedly connected to the upper end of the workbench (1), and the support rods (6) being located on the opposite side of the support connecting rod (7), and the upper ends of the support rods (6) being fixedly connected to elastic rubber pads (12); A connecting frame (9), wherein at least two connecting frames (9) are provided, and the connecting frames (9) are fixedly connected to the upper end of the workbench (1) at equal distances, a first electric telescopic rod (10) is fixedly connected to the middle of the upper end of the connecting frame (9), and a pressing plate (11) is fixedly connected to the lower end of the transmission rod of the first electric telescopic rod (10).

2. A large-size high-frequency straight seam welded pipe equipment according to claim 1, characterized in that: Second electric telescopic rods (23) are fixedly connected to the left and right sides of the lower end of the support plate (3), and the lower end of the second electric telescopic rod (23) is fixedly connected to the lower end of the inner cavity of the connecting groove (2).

3. The large-size high-frequency straight seam welded pipe equipment according to claim 1 is characterized in that: The front and rear sides of the upper end of the support plate (3) are fixedly connected with a slide rail (24), the upper side of the slide rail (24) is movably provided with a slide rod (21), and the upper end of the slide rod (21) is fixedly connected to the lower end of the connecting plate (4).

4. The large-size high-frequency straight seam welded pipe equipment according to claim 3 is characterized in that: The inner side surface of the sliding rod (21) is fixedly connected to a motor (19), a transmission rod of the motor (19) is fixedly sleeved with a gear (20), the lower end of the gear (20) is meshingly connected to a rack (25), and the rack (25) is fixedly connected to the upper end of the support plate (3).

5. The large-size high-frequency straight seam welded pipe equipment according to claim 3 is characterized in that: The lower end of the connecting plate (4) is also fixedly connected to a welding main machine (18), and the output port of the welding main machine (18) is connected to a welding head (22).

6. The large-size high-frequency straight seam welded pipe equipment according to claim 1 is characterized in that: An adjustment mechanism (5) is fixedly connected to the middle of the left upper end of the connecting plate (4), and the adjustment mechanism (5) comprises a connecting ear plate (51), a connecting column (52), a clamping block (53), a first adjustment screw (54), a connecting plate (55) and a second adjustment screw (56). The lower end of the connecting ear plate (51) is fixedly connected to the upper end of the connecting plate (4), the middle part of the connecting ear plate (51) is rotatably connected to the connecting column (52) via a rotating shaft, and the upper end of the connecting column (52) is fixedly connected to the connecting column (52). A clamping block (53) is fixedly connected to the connecting ear plate (51); a connecting plate (55) is fixedly connected to the left end of the connecting ear plate (51); a second adjusting screw (56) is inserted into the middle part of the upper side of the connecting plate (55) through a thread, and the second adjusting screw (56) is inserted into the lower end of the clamping block (53); a connecting plate is fixedly connected to the lower part of the left end of the connecting ear plate (51); a first adjusting screw (54) is inserted into the middle part of the connecting plate through a thread, and the first adjusting screw (54) is inserted into the lower end of the connecting column (52).

7. The large-size high-frequency straight seam welded pipe equipment according to claim 6 is characterized in that: The upper end of the connecting column (52) is fixedly connected to a welding head (22).

8. The large-size high-frequency straight seam welded pipe equipment according to claim 1 is characterized in that: The central rotating shafts of the four supporting rotating wheels (8) on the left and right sides are fixedly connected to a driving motor (13), and the driving motor (13) is fixedly connected to the outside of the supporting connecting rod (7).

9. The large-size high-frequency straight seam welded pipe equipment according to claim 1 is characterized in that: The lower ends of the supporting connecting rods (7) are fixedly connected to the limiting plates (17), the middle parts of the lower ends of the limiting plates (17) are fixedly connected to the cylindrical rods (15), the lower parts of the cylindrical rods (15) are movably plugged into the middle parts of the limiting frame plates (14), the outer sides of the cylindrical rods (15) are sleeved with springs (16) inside the limiting frame plates (14), and the upper ends of the limiting frame plates (14) are fixedly connected to the lower ends of the workbench (1).

10. The large-size high-frequency straight seam welded pipe equipment according to claim 1 is characterized in that: The supporting rotating wheel comprises a roller body (81), a connecting block (82), a ball (83) and a rotating connecting shaft (84); the middle of the roller body (81) is plugged into the connecting rotating shaft; a plurality of connecting blocks (82) are evenly inlaid on the outer side of the roller body (81); a connecting cavity provided in the middle of the connecting block (82) is rotatably connected to the ball (83) via the rotating connecting shaft (84); and the rolling direction of the ball (83) is left-right rotation.

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