A high frequency welded pipe correction and repair equipment

Abstract

The present invention relates to the field of welding technology, and specifically to a high-frequency welded pipe correction and repair device, comprising a top plate, a guide mechanism for synchronously guiding the edge positions of both sides of a steel strip is arranged on the right side of the lower part of the top plate, and a pushing and rolling mechanism for rolling and pushing the inner and outer sides of the tubular steel strip is arranged on the left side of the lower part of the top plate. The present invention adopts a plurality of C-shaped parts to guide the edge of the steel strip during the process of rolling the steel strip into a tubular shape, so that the edge positions on both sides of the steel strip can always move synchronously, thereby avoiding the situation of forcibly pushing and guiding the edge of the steel strip in the later stage, and further avoiding the possibility of curling and dislocation of the edge of the steel strip and twisting of the tubular steel strip, ensuring the quality of welding and the quality of the pipe. When the inner rolling assembly and the outer rolling assembly in the present invention roll the tubular steel strip, the positions of the inner rolling assembly and the outer rolling assembly always correspond, thereby avoiding the inner rolling assembly and the outer rolling assembly from abutting and deforming the tubular steel strip.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a high-frequency welded pipe correction and repair device. Background Art

[0002] High-frequency welded pipe is a pipe welding process that utilizes the skin effect and proximity effect of high-frequency current to make the current highly concentrated on the edge to be welded, so that the edge of the tube blank is heated to the welding temperature and the welding is achieved through extrusion. Before welding, the edge of the tube blank must be flat and aligned. Therefore, the edge of the tube blank needs to be corrected to ensure its straightness and alignment.

[0003] At present, when high-frequency welded pipes are being made, the steel strip is usually gradually rolled into a tube through a mold, and then the edges of the tubular steel strip are welded together through high-frequency welding equipment, so that the tubular steel strip is welded into a pipe, and finally the pipe is cut according to demand.

[0004] When the steel strip is gradually rolled into a tube by the existing technology, its edge will be guided when the steel strip is about to be formed, so that the gap formed by the edge of the steel strip can be aligned with the high-frequency welding equipment. However, this method of guiding the edge of the steel strip when it is about to be formed, if the edges on both sides of the steel strip do not move synchronously at the beginning of rolling, it will cause the position of the gap formed by the edge of the steel strip to deviate too much from the high-frequency welding equipment. When the edge of the steel strip is forcibly guided, it is easy to cause the edge of the steel strip to curl, thereby affecting the quality of welding. Even if curling does not occur, the tubular steel strip will be twisted due to the push of the guide structure, thereby reducing the quality of the pipe after welding. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a high-frequency welded pipe correction and repair equipment, including a top plate, a guide mechanism for synchronously guiding the edge positions of both sides of the steel strip is arranged on the right side of the lower part of the top plate, and a pushing and rolling mechanism for rolling and pushing the inner and outer sides of the tubular steel strip is arranged on the left side of the lower part of the top plate.

[0006] The guiding mechanism includes a height frame which is arranged at equal intervals along the left-right direction on the right side of the lower part of the top plate, the height frame is slidably connected to the top plate in the vertical direction, a movable square rod is symmetrically arranged front and back at the lower part of the height frame, the movable square rod is slidably connected to the height frame along the front and back direction, a C-shaped part is rotatably arranged at the lower part of the movable square rod, a limiting component for pulling and limiting the edge of the steel belt is arranged inside the C-shaped component, and an adjusting component for adjusting the position of the C-shaped component is arranged on the height frame.

[0007] The pushing and rolling mechanism includes a fixed tube fixedly installed on the left side of the lower part of the top plate, a vertical member is fixedly installed on the right side inside the fixed tube, the lower part of the vertical member is a tubular structure, a support tube is fixedly installed on the left side of the lower part of the vertical member, a fixed column is fixedly mounted on the left side of the support tube, an inner rolling assembly for rolling and pushing the inner side of the tubular steel belt is arranged on the outer side of the fixed column, an outer rolling assembly for rolling and pushing the outer side of the tubular steel belt is arranged inside the fixed tube, and a shaping assembly for shaping the edge of the tubular steel belt is arranged on the vertical member.

[0008] Preferably, the limiting assembly includes a clamping frame symmetrically arranged inside the C-shaped member relative to the opening of the C-shaped member, the clamping frame is slidably connected to the C-shaped member, and a clamping roller is arranged on the side of the clamping frame close to the opening of the C-shaped member to rotate at equal intervals along the left-right direction, and the clamping roller is arranged to be inclined from right to left gradually away from the opening of the C-shaped member, and a No. 1 bidirectional screw is rotatably arranged inside the C-shaped member, and the No. 1 bidirectional screw is threadedly connected to the two clamping frames at corresponding positions at the same time, and a limiting roller is arranged on the side of the C-shaped member away from its opening to rotate at equal intervals along the left-right direction.

[0009] Preferably, the adjustment assembly includes a No. 1 screw rotatably arranged on the upper part of the height frame, the No. 1 screw is threadedly connected to the top plate, and a No. 2 bidirectional screw is rotatably arranged on the lower side of the height frame, the No. 2 bidirectional screw is threadedly connected to two movable square rods at corresponding positions at the same time, and the movable square rod is fixed to the position of the C-shaped part by a fastening screw at the lower part.

[0010] Preferably, the inner roller assembly includes rotating rings rotatably arranged on the left and right sides of the fixed column respectively, a movable plate is arranged on the rotating ring for sliding along its radial direction, an inner roller frame is arranged on the side of the movable plate away from the rotating ring for sliding along the length direction of the movable plate, an inner roller is rotatably arranged on the side of the inner roller frame away from the fixed column, a reciprocating part for pushing and pulling the movable plate back and forth is arranged on the fixed column, a No. 2 screw threadedly connected to the inner roller frame is rotatably arranged inside the movable plate, and a rotating part for driving the two rotating rings to rotate synchronously in opposite directions is arranged on the fixed column.

[0011] Preferably, the reciprocating part includes track grooves respectively opened on the left and right end faces of the fixed column, one side of the track groove is an arc structure close to the cylindrical surface of the fixed column, and the other side of the track groove is an arc structure away from the cylindrical surface of the fixed column. The two track grooves on the fixed column are staggered at 180°, and the movable plate slides inside the track groove at the corresponding position through a raised column fixedly installed on the side close to the axis of the fixed column.

[0012] Preferably, the rotating part includes a No. 1 rotating bevel gear fixedly installed on one side of the rotating ring close to each other, a No. 1 transmission bevel gear is rotatably provided on the upper middle side of the fixed column, and the No. 1 transmission bevel gear is meshed with two No. 1 rotating bevel gears at the same time, an actuator motor is fixedly installed on the right side of the lower part of the vertical member, a transmission rod is provided at the lower part of the vertical member and rotates together with the inside of the support tube, the right end of the transmission rod is fixedly connected to the output shaft of the actuator motor, and the left end of the transmission rod is fixedly connected to the rotating ring on the left.

[0013] Preferably, the shaping component includes concave rollers symmetrically rotated on the front and rear sides of the vertical member, convex rollers symmetrically rotated on the front and rear sides of the vertical member, the concave rollers and the convex rollers at the corresponding positions are arranged up and down, an active roller is symmetrically rotated in the middle of the vertical member, two mutually meshing transmission gears are symmetrically rotated in the front and rear on the vertical member, the transmission gears are connected to the active rollers at the corresponding positions through belts, and the transmission gears on the front side are connected to the transmission rod through belts.

[0014] Preferably, the outer roller assembly includes two rotating rings arranged left and right and rotatably arranged on the left side of the fixed tube, a sliding plate is provided on the rotating ring for sliding along its radial direction, an outer roller frame is provided on the side of the sliding plate close to the center of the rotating ring for sliding along the length direction of the sliding plate, an outer resistance roller is rotatably provided on the side of the outer roller frame close to the center of the rotating ring, a moving part for driving the sliding plate to move back and forth is provided on the fixed tube, a No. 3 screw rod threadedly connected to the outer roller frame is rotatably provided on the sliding plate, and a driving part for driving the two rotating rings to rotate synchronously in opposite directions is provided on the fixed tube.

[0015] Preferably, the moving part includes two track ring plates fixedly installed on the inner side of the fixed tube, the track ring plates are respectively located on the side where the two rotating rings are close to each other, and push-pull grooves are opened on the side where the two track ring plates are away from each other, one side of the push-pull groove is an arc structure close to the axis position of the track ring plate, and the other side of the push-pull groove is an arc structure away from the axis position of the track ring plate, the two track ring plates are staggered at 180°, and the sliding plate slides inside the push-pull groove at the corresponding position through a pillar fixedly installed on the side away from the axis of the track ring plate.

[0016] Preferably, the driving part includes a v-shaped frame fixedly mounted on the left side of the upper part of the fixed tube, and a No. 2 transmission bevel gear is rotatably arranged on the inner sides of the two vertical sections of the v-shaped frame, and a driving motor is fixedly mounted on the lower part of the horizontal section of the v-shaped frame, and an active bevel gear is fixedly mounted on the output shaft of the driving motor, and the active bevel gear is meshed with the two No. 2 transmission bevel gears at the same time, and the No. 2 transmission bevel gear is connected to a rotating ring at a corresponding position through a belt.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention uses an adjustment component to adjust the position of the C-shaped member, so that multiple C-shaped members can guide the edges of the steel strip during the process of rolling it into a tube, so that when the steel strip is first bent, the edge positions on both sides of it can move synchronously, thereby avoiding the situation where the edges of the steel strip are forcibly pushed and guided in the later stage, thereby avoiding the possibility of curling and dislocation of the steel strip edges and twisting of the tubular steel strip, thereby ensuring the quality of welding and the quality of the pipe.

[0018] 2. The present invention adopts a limiting component to continuously pull the edge of the steel strip when the steel strip moves, so that the edge of the steel strip is always limited to a fixed position inside the C-shaped part when moving, thereby further ensuring the uniform position of the edges on both sides of the steel strip, and further ensuring the position of the gap formed by the edge of the steel strip and the corresponding accuracy of the high-frequency welding equipment, further ensuring the welding quality.

[0019] 3. The present invention adopts an inner rolling assembly to roll the inner side of the tubular steel strip, and uses an outer rolling assembly to roll the outer side of the tubular steel strip, thereby increasing the cross-sectional roundness of the tubular steel strip and ensuring the quality of the pipe. The inner rolling assembly and the outer rolling assembly can both synchronously and reversely roll the tubular steel strip from the bottom to the edges on both sides thereof in one direction, thereby reducing the size of the gap formed by the edges on both sides of the steel strip by rolling and pushing, making the pipe more firm after welding and further improving the welding quality.

[0020] Fourth, when the inner roller assembly and the outer roller assembly in the present invention roll the tubular steel strip, the positions of the inner roller assembly and the outer roller assembly always correspond to each other, thereby preventing the inner roller assembly and the outer roller assembly from abutting and deforming the tubular steel strip.

[0021] 5. The present invention adopts a shaping component to roll the edge of the steel strip so that the edge of the steel strip is also pressed into an arc shape, thereby ensuring the roundness of the steel pipe after welding and improving the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a partial structural schematic diagram of the top plate and the guide mechanism in the present invention.

[0025] Figure 3 It is a cross-sectional view of the C-shaped member and the limiting assembly in the present invention.

[0026] Figure 4 It is a partial cross-sectional view of the push-roll mechanism in the present invention.

[0027] Figure 5 It is a partial cross-sectional view of the shaping component, vertical member, support tube, actuating motor and transmission rod in the present invention.

[0028] Figure 6 It is a front view of the second transmission bevel gear, drive motor and driving bevel gear in the present invention.

[0029] Figure 7 It is a schematic structural diagram of the support tube, fixed column, inner rolling assembly and outer rolling assembly after removing the driving part in the present invention.

[0030] Figure 8 It is a partial cross-sectional view of the support tube, fixed column, first rotating bevel gear, first transmission bevel gear, rotating ring, track groove and transmission rod in the present invention.

[0031] Fig. 9 It is a cross-sectional view of the fixed column, moving plate and reciprocating part in the present invention.

[0032] Fig.10 It is a schematic partial structure diagram of the rotating ring, sliding plate, outer roller frame, outer pressing roller, third screw rod and support column in the present invention.

[0033] Fig.11 It is a cross-sectional view of the sliding plate and moving part in the present invention.

[0034] In the figure: 1, top plate; 2, guiding mechanism; 3, pushing and rolling mechanism; 21, height frame; 22, moving square rod; 23, C-shaped member; 24, limiting assembly; 25, adjusting assembly; 31, fixed tube; 32, vertical member; 33, support tube; 34, fixed column; 35, inner rolling assembly; 36, outer rolling assembly; 37, shaping component; 241, pressing frame; 242, pressing roller; 243, first bidirectional screw rod; 244, limiting roller; 251, first screw rod; 252, second bidirectional screw rod; 351, rotating ring; 352, moving plate; 353, inner roller frame; 354, inner pressing roller; 355, reciprocating part; 356, second screw rod; 357, rotating part; 361, rotating ring; 362, sliding plate; 363, outer roller frame; 364, outer pressing roller; 365, moving part; 366, third screw rod; 367, driving part; 371, concave roller; 372, convex roller; 373, driving roller; 374, transmission gear; 3551, track groove; 3552, protruding column; 3571, first rotating bevel gear; 3572, first transmission bevel gear; 3573, actuating motor; 3574, transmission rod; 3651, track ring plate; 3652, pushing and pulling groove; 3653, support column; 3671, U-shaped frame; 3672, second transmission bevel gear; 3673, drive motor; 3674, driving bevel gear. Detailed implementation manners

[0035] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product specifications are used.

[0036] See also Figure 1 , Figure 2 and Figure 4 A high-frequency welded pipe correction and repair equipment includes a top plate 1, a guide mechanism 2 for synchronously guiding the edge positions of both sides of the steel strip is arranged on the right side of the lower part of the top plate 1, and a pushing and rolling mechanism 3 for rolling and pushing the inner and outer sides of the tubular steel strip is arranged on the left side of the lower part of the top plate 1.

[0037] When it is necessary to weld the steel strip into a tube by high-frequency welding, firstly, the position of the guide mechanism 2 is adjusted so that in the process of bending into a tube, the guide mechanism 2 can guide the two side edges of the steel strip at different positions, so that the positions of the two side edges of the steel strip always move synchronously, and then the inner and outer sides of the steel strip bent into a tube are rolled and pushed by the pushing and rolling mechanism 3 to improve the cross-sectional roundness of the tubular steel strip and reduce the size of the gap formed by the two side edges of the tubular steel strip.

[0038] See also Figure 1 and Figure 2 The guide mechanism 2 includes a height frame 21 which is arranged at equal intervals along the left-right direction on the right side of the lower part of the top plate 1. The height frame 21 is slidably connected to the top plate 1 along the vertical direction. A movable square rod 22 is symmetrically arranged at the lower part of the height frame 21. The movable square rod 22 is slidably connected to the height frame 21 along the front-back direction. A C-shaped piece 23 is rotatably arranged at the lower part of the movable square rod 22. An adjusting component 25 for adjusting the position of the C-shaped piece 23 is arranged on the height frame 21.

[0039] See also Figure 2 The adjustment component 25 includes a No. 1 screw rod 251 rotatably arranged on the upper part of the height frame 21, and the No. 1 screw rod 251 is threadedly connected to the top plate 1. A No. 2 bidirectional screw rod 252 is rotatably arranged on the lower side of the height frame 21, and the No. 2 bidirectional screw rod 252 is threadedly connected to two movable square rods 22 at corresponding positions at the same time. The movable square rod 22 fixes the position of the C-shaped member 23 by the lower fastening screw.

[0040] When it is necessary to guide the edge positions of both sides of the steel belt, the operator manually turns the No. 1 screw 251, so that the No. 1 screw 251 drives the height frame 21 to adjust the position in the vertical direction, and the height frame 21 drives the C-shaped part 23 to adjust synchronously through the movable square rod 22, and then the operator manually turns the No. 2 bidirectional screw 252, so that the No. 2 bidirectional screw 252 drives the two movable square rods 22 on the same height frame 21 to adjust the positions synchronously in the opposite direction, and the movable square rod 22 drives the C-shaped part 23 at the corresponding position to move synchronously, and then the C-shaped part 23 is rotated and fixed together with the movable square rod 22 by tightening the screws, so that the opening of the C-shaped part 23 can correspond to the edge position of the steel belt at different positions.

[0041] It should be noted that by increasing the number of C-shaped members 23 in the horizontal direction, more positions of the edge of the steel strip can be limited and guided, thereby increasing the accuracy of the positions of the two edges of the steel strip.

[0042] See also Figure 1 , Figure 2 and Figure 3 The guide mechanism 2 also includes a limit assembly 24 arranged inside the C-shaped member 23. The limit assembly 24 includes a clamping frame 241 symmetrically arranged inside the C-shaped member 23 relative to the opening of the C-shaped member 23. The clamping frame 241 is slidably connected to the C-shaped member 23. A clamping roller 242 is rotatably arranged on the side of the clamping frame 241 close to the opening of the C-shaped member 23 along the left-right direction. The clamping roller 242 is arranged to be inclined from right to left gradually away from the opening of the C-shaped member 23. A No. 1 bidirectional screw 243 is rotatably arranged inside the C-shaped member 23. The No. 1 bidirectional screw 243 is threadedly connected to the two clamping frames 241 at corresponding positions at the same time. A limit roller 244 is rotatably arranged on the side of the C-shaped member 23 away from its opening along the left-right direction.

[0043] After the position adjustment of the C-shaped part 23 is completed, the edges of the steel belt in different positions during bending are all extended into the interior of the C-shaped part 23 at the corresponding position, and then the operator rotates the No. 1 bidirectional screw 243 with a hexagonal wrench, so that the No. 1 bidirectional screw 243 drives the two clamping frames 241 at the corresponding positions to approach each other, and the clamping frames 241 drive the clamping rollers 242 to clamp on both side surfaces of the edge position of the steel belt, so that during the movement of the steel belt, the inclined clamping rollers 242 can continuously pull the edge of the steel belt toward the limiting roller 244, so that the edge of the steel belt always rests on the outer side of the limiting roller 244, thereby ensuring that the positions of the two edges of the steel belt are always consistent.

[0044] See also Figure 1 , Figure 4 and Figure 5The pushing and rolling mechanism 3 includes a fixed tube 31 fixedly installed on the left side of the lower part of the top plate 1, a vertical member 32 is fixedly installed on the right side inside the fixed tube 31, the lower part of the vertical member 32 is a tubular structure, a support tube 33 is fixedly installed on the left side of the lower part of the vertical member 32, a fixed column 34 is fixedly sleeved on the left side of the support tube 33, a shaping component 37 for shaping the edge of the tubular steel belt is provided on the vertical member 32, an executive motor 3573 is fixedly installed on the right side of the lower part of the vertical member 32, a transmission rod 3574 is provided at the lower part of the vertical member 32 and the inside of the support tube 33 for rotating together, and the right end of the transmission rod 3574 is fixedly connected to the output shaft of the executive motor 3573.

[0045] See also Figure 4 and Figure 5 The shaping component 37 includes a concave roller 371 symmetrically arranged on the front and rear sides of the vertical member 32 for rotation, and a convex roller 372 symmetrically arranged on the front and rear sides of the vertical member 32 for rotation. The concave roller 371 and the convex roller 372 at the corresponding position are arranged up and down, and an active roller 373 is symmetrically arranged on the middle part of the vertical member 32 for rotation. Two mutually meshing transmission gears 374 are symmetrically arranged on the vertical member 32 for rotation, and the transmission gear 374 is connected to the active roller 373 at the corresponding position through a belt, and the front transmission gear 374 is connected to the transmission rod 3574 through a belt.

[0046] When the edge of the steel strip passes through the inside of the leftmost C-shaped part 23, the steel strip is bent into a tube with its opening facing upward. Then the operator inserts the two side edges of the tubular steel strip between the concave roller 371 and the convex roller 372 at corresponding upper and lower positions, so that the concave roller 371 and the convex roller 372 roll the two side edges of the tubular steel strip into an arc, thereby making the cross-section of the tubular steel strip a circular structure.

[0047] When the steel belt moves between the concave roller 371 and the convex roller 372, the execution motor 3573 is started, so that the execution motor 3573 drives the transmission rod 3574 to rotate, and the transmission rod 3574 drives the front transmission gear 374 to rotate, and the front transmission gear 374 drives the rear transmission gear 374 to rotate synchronously in the opposite direction, so that the two transmission gears 374 drive the two active rollers 373 to rotate synchronously in the opposite direction, so that the active roller 373 continuously pulls the edge position of the steel belt toward the direction close to the vertical member 32, thereby ensuring that the edge of the steel belt is attached to the side of the vertical member 32, ensuring that the concave roller 371 and the convex roller 372 roll the edge of the steel belt at the same position, avoiding the change of the rolling position, resulting in the problem of different roundness of the cross section of the steel belt at different positions.

[0048] See also Figure 4 , Figure 7 and Figure 8The push-roll mechanism 3 also includes an inner roller assembly 35 arranged on the outside of the fixed column 34. The inner roller assembly 35 includes a rotating ring 351 rotatably arranged on the left and right sides of the fixed column 34 respectively. A movable plate 352 is provided on the rotating ring 351 to slide along its radial direction. An inner roller frame 353 is provided on the movable plate 352 on the side away from the rotating ring 351 to slide along the length direction of the movable plate 352. An inner roller 354 is rotatably provided on the side of the inner roller frame 353 away from the fixed column 34. A No. 2 screw 356 threadedly connected to the inner roller frame 353 is rotatably provided inside the movable plate 352.

[0049] See also Figure 4 , Figure 7 and Fig. 9 The inner roller assembly 35 also includes a reciprocating portion 355 arranged on the fixed column 34, and the reciprocating portion 355 includes track grooves 3551 respectively opened on the left and right end faces of the fixed column 34, one side of the track groove 3551 is an arc structure close to the cylindrical surface of the fixed column 34, and the other side of the track groove 3551 is an arc structure away from the cylindrical surface of the fixed column 34. The two track grooves 3551 on the fixed column 34 are staggered by 180°, and the movable plate 352 slides inside the track groove 3551 at the corresponding position through a raised column 3552 fixedly installed on the side close to the axis of the fixed column 34.

[0050] See also Figure 4 , Figure 7 and Figure 8 The inner roller assembly 35 also includes a rotating part 357 arranged on the fixed column 34, and the rotating part 357 includes a No. 1 rotating bevel gear 3571 fixedly installed on the side close to the rotating ring 351. A No. 1 transmission bevel gear 3572 is rotatably arranged on the upper middle side of the fixed column 34. The No. 1 transmission bevel gear 3572 is meshed with the two No. 1 rotating bevel gears 3571 at the same time, and the left end of the transmission rod 3574 is fixedly connected to the rotating ring 351 on the left side.

[0051] See also Figure 1 , Figure 4 and Fig.10 The push-roll mechanism 3 also includes an outer roller assembly 36 arranged inside the fixed tube 31. The outer roller assembly 36 includes two rotating rings 361 arranged left and right and rotatably arranged on the left side of the fixed tube 31. A sliding plate 362 is provided on the rotating ring 361 to slide along its radial direction. An outer roller frame 363 is provided on the sliding plate 362 on the side close to the center of the rotating ring 361 to slide along the length direction of the sliding plate 362. An outer resistance roller 364 is rotatably provided on the side of the outer roller frame 363 close to the center of the rotating ring 361. A No. 3 screw 366 threadedly connected to the outer roller frame 363 is rotatably provided on the sliding plate 362.

[0052] See also Figure 4 , Fig.10 and Fig.11, the outer rolling assembly 36 further includes a moving part 365 arranged on the fixed tube 31. The moving part 365 includes two track ring plates 3651 fixedly installed inside the fixed tube 31. The track ring plates 3651 are respectively located on the side where the two rotating rings 361 are close to each other. On the side where the two track ring plates 3651 are away from each other, a push-pull groove 3652 is formed. One side of the push-pull groove 3652 is an arc structure close to the axis position of the track ring plate 3651, and the other side of the push-pull groove 3652 is an arc structure away from the axis position of the track ring plate 3651. The two track ring plates 3651 are staggered by 180° in angle. The sliding plate 362 slides inside the corresponding push-pull groove 3652 through a support column 3653 fixedly installed on the side away from the axis of the track ring plate 3651.

[0053] Refer to Figure 1 , Figure 4 , Figure 6 and Figure 7 , the outer rolling assembly 36 further includes a driving part 367 arranged on the fixed tube 31. The driving part 367 includes a U-shaped frame 3671 fixedly installed on the upper left side of the fixed tube 31. On the inner sides of the two vertical sections of the U-shaped frame 3671, second transmission bevel gears 3672 are rotatably arranged. At the lower part of the horizontal section of the U-shaped frame 3671, a driving motor 3673 is fixedly installed. A driving bevel gear 3674 is fixedly installed on the output shaft of the driving motor 3673. The driving bevel gear 3674 meshes with the two second transmission bevel gears 3672 at the same time. The second transmission bevel gears 3672 are connected to the corresponding rotating rings 361 through belts.

[0054] In the initial state, the convex column 3552 on the moving plate 352 is located at the position of the corresponding track groove 3551 close to the cylindrical surface of the fixed column 34. At the same time, the support column 3653 on the sliding plate 362 is located at the position of the push-pull groove 3652 of the corresponding track ring plate 3651 close to the axis of the track ring plate 3651, so that the track groove 3551 pushes the moving plate 352 to be away from the fixed column 34 through the convex column 3552. At the same time, the push-pull groove 3652 pushes the sliding plate 362 to be close to the axis of the track ring plate 3651 through the support column 3653, and the sliding plate 362 and the moving plate 352 at the corresponding positions are in parallel positions close to each other.

[0055] Subsequently, the operator manually rotates the second screw 356 and the third screw 366. The second screw 356 drives the inner roller frame 353 to move away from the fixed column 34, so that the inner roller frame 353 drives the inner pressing roller 354 to abut against the inner side surface of the tubular steel belt. Similarly, the third screw 366 drives the outer pressing roller 364 to abut against the outer side surface of the tubular steel belt. And the inner pressing roller 354 and the outer pressing roller 364 abut against both sides of the same position of the tubular steel belt, so as to prevent the tubular steel belt from being pushed out of round through the mutual pushing of the inner pressing roller 354 and the outer pressing roller 364.

[0056] When the transmission rod 3574 starts to rotate, the driving motor 3673 is started synchronously, and the transmission rod 3574 drives the rotating ring 351 on the left to rotate synchronously, and the rotating ring 351 on the left drives the No. 1 rotating bevel gear 3571 on the left to rotate, and the No. 1 rotating bevel gear 3571 on the left drives the No. 1 rotating bevel gear 3571 on the right to rotate synchronously in the opposite direction through the No. 1 transmission bevel gear 3572, and the No. 1 rotating bevel gear 3571 on the right drives the rotating ring 351 on the right to rotate synchronously, so that the rotating rings 351 on both sides rotate synchronously in the opposite direction.

[0057] The driving motor 3673 drives the two No. 2 transmission bevel gears 3672 to rotate synchronously in the opposite direction through the active bevel gear 3674. The two No. 2 transmission bevel gears 3672 drive the two rotating rings 361 to rotate synchronously in the opposite direction through the belt, and make the rotating ring 361 and the rotating ring 351 at the corresponding position rotate in the same direction, and at the same time make the rotating ring 361 and the rotating ring 351 rotate at the same angular velocity. The rotating ring 351 drives the inner resistance roller 354 to rotate synchronously through the moving plate 352 and the inner roller frame 353. The rotating ring 361 drives the outer resistance roller 364 to rotate synchronously through the sliding plate 362 and the outer roller frame 363, so that the positions of the inner resistance roller 354 and the outer resistance roller 364 always correspond.

[0058] When the two inner rollers 354 rotate upward from the bottom of the tubular steel belt at the same time, the track groove 3551 pushes the inner roller 354 against the inner side surface of the tubular steel belt through the protruding column 3552, so that the inner roller 354 rolls and pushes the inner side surface of the tubular steel belt, thereby increasing the roundness of the tubular steel belt and reducing the size of the gap formed by the two edges of the tubular steel belt. In addition, by the synchronous and opposite rolling and pushing of the two inner rollers 354, both sides of the tubular steel belt can be subjected to force at the same time, thereby preventing the gap formed by the two edges of the tubular steel belt from offset.

[0059] Similarly, when the two inner rollers 354 rotate upward from the bottom of the tubular steel strip at the same time, the two outer rollers 364 rotate upward from the bottom of the tubular steel strip synchronously, so that the outer rollers 364 roll and push the outer side surface of the tubular steel strip.

[0060] When the two inner rollers 354 rotate to the top gap of the tubular steel belt, the rotating ring 351 drives the movable plate 352 to rotate until the raised column 3552 thereon moves to a position where the track groove 3551 is away from the cylindrical surface of the fixed column 34, so that the track groove 3551 pulls the inner roller 354 toward the fixed column 34, so that the inner roller 354 no longer contacts the tubular steel belt, and further makes the inner roller 354 not contact the tubular steel belt when rotating from top to bottom, thereby avoiding enlarging the gap formed by the two edges of the tubular steel belt.

[0061] Similarly, when the two inner rollers 354 rotate to the top gap of the tubular steel belt, the push-pull groove 3652 pulls the outer roller 364 away from the axis of the track ring plate 3651 through the support 3653, so that the outer roller 364 no longer contacts the outer side of the tubular steel belt, thereby preventing the outer roller 364 from widening the gap formed by the two edges of the tubular steel belt when rotating from top to bottom.

[0062] When correcting a steel strip that needs to be high-frequency welded into a steel pipe, the present invention also includes the following steps: In the first step, the operator manually rotates the No. 1 screw 251 and the No. 2 bidirectional screw 252, and rotates the C-shaped part 23, so that the opening of the C-shaped part 23 can correspond to the edge position of the steel strip at different positions, and then the edges of the steel strip at different positions in the bending are extended into the interior of the C-shaped part 23 at the corresponding positions.

[0063] In the second step, the operator rotates the No. 1 bidirectional screw 243 so that the No. 1 bidirectional screw 243 drives the clamping rollers 242 to clamp on both side surfaces of the edge of the steel strip, thereby the edge of the steel strip is continuously pulled toward the direction close to the limiting roller 244 through the inclined clamping rollers 242, so that the edge of the steel strip is always against the outer side surface of the limiting roller 244, thereby ensuring that the positions of the two edges of the steel strip are always consistent.

[0064] In the third step, the operator inserts the two side edges of the tubular steel strip between the concave roller 371 and the convex roller 372 at the corresponding upper and lower positions, so that the concave roller 371 and the convex roller 372 roll the two side edges of the tubular steel strip into an arc shape, and at the same time starts the execution motor 3573, so that the active roller 373 continuously pulls the edge position of the steel strip toward the direction close to the vertical member 32, ensuring that the concave roller 371 and the convex roller 372 roll the edge of the steel strip at the same position.

[0065] In the fourth step, the operator rotates the second screw 356 and the third screw 366 so that the inner roller 354 and the outer roller 364 abut against both sides of the same position of the tubular steel belt, thereby preventing the tubular steel belt from being pushed out of round through the mutual push of the inner roller 354 and the outer roller 364.

[0066] The fifth step is to start the driving motor 3673, so that the transmission rod 3574 drives the inner roller 354 to rotate, and the driving motor 3673 drives the outer roller 364 to rotate, and through the push-pull of the track groove 3551 and the push-pull groove 3652, the inner roller 354 and the outer roller 364 can roll and push the tubular steel belt only when they rotate upward from the bottom of the tubular steel belt, thereby reducing the size of the gap formed by the two edges of the tubular steel belt.

[0067] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A high-frequency welded pipe correction and repair device, comprising a top plate (1), characterized in that: A guide mechanism (2) for synchronously guiding the edge positions of both sides of the steel strip is arranged on the right side of the lower part of the top plate (1), and a rolling mechanism (3) for rolling and pushing the inner and outer sides of the tubular steel strip is arranged on the left side of the lower part of the top plate (1); The guide mechanism (2) comprises a height frame (21) arranged at equal intervals along the left-right direction on the right side of the lower part of the top plate (1); the height frame (21) is slidably connected to the top plate (1) along the vertical direction; a movable square rod (22) is symmetrically arranged at the lower part of the height frame (21); the movable square rod (22) is slidably connected to the height frame (21) along the front-back direction; a C-shaped member (23) is rotatably arranged at the lower part of the movable square rod (22); a limiting component (24) for pulling and limiting the edge of the steel strip is arranged inside the C-shaped member (23); and an adjusting component (25) for adjusting the position of the C-shaped member (23) is arranged on the height frame (21); The pushing and rolling mechanism (3) comprises a fixed tube (31) fixedly mounted on the left side of the lower part of the top plate (1); a vertical member (32) is fixedly mounted on the right side of the fixed tube (31); the lower part of the vertical member (32) is a tubular structure; a support tube (33) is fixedly mounted on the left side of the lower part of the vertical member (32); a fixed column (34) is fixedly mounted on the left side of the support tube (33); an inner rolling assembly (35) for rolling and pushing the inner side of the tubular steel strip is arranged on the outer side of the fixed column (34); an outer rolling assembly (36) for rolling and pushing the outer side of the tubular steel strip is arranged inside the fixed tube (31); and a shaping assembly (37) for shaping the edge of the tubular steel strip is arranged on the vertical member (32).

2. The high-frequency welded pipe correction and repair equipment according to claim 1 is characterized in that: The limiting assembly (24) comprises a clamping frame (241) symmetrically arranged inside the C-shaped member (23) relative to the opening thereof, the clamping frame (241) being slidably connected to the C-shaped member (23), a clamping roller (242) being rotatably arranged at equal intervals along the left-right direction on the side of the clamping frame (241) close to the opening of the C-shaped member (23), the clamping roller (242) being arranged to be inclined from right to left gradually away from the opening of the C-shaped member (23), a No. 1 bidirectional screw (243) being rotatably arranged inside the C-shaped member (23), the No. 1 bidirectional screw (243) being threadedly connected to two clamping frames (241) at corresponding positions at the same time, and a limiting roller (244) being rotatably arranged at equal intervals along the left-right direction on the side of the C-shaped member (23) away from its opening.

3. The high-frequency welded pipe correction and repair equipment according to claim 1 is characterized in that: The adjustment assembly (25) comprises a No. 1 screw rod (251) rotatably arranged on the upper part of the height frame (21), the No. 1 screw rod (251) being threadedly connected to the top plate (1), a No. 2 bidirectional screw rod (252) being rotatably arranged on the lower side of the height frame (21), the No. 2 bidirectional screw rod (252) being threadedly connected to two movable square rods (22) at corresponding positions at the same time, and the movable square rods (22) are fixed to the position of the C-shaped member (23) by means of a fixing screw at the lower part.

4. The high-frequency welded pipe correction and repair equipment according to claim 1 is characterized in that: The inner roller assembly (35) comprises rotating rings (351) rotatably arranged on the left and right sides of the fixed column (34), a movable plate (352) is slidably arranged on the rotating ring (351) along its radial direction, an inner roller frame (353) is slidably arranged on the side of the movable plate (352) away from the rotating ring (351) along the length direction of the movable plate (352), an inner roller (354) is rotatably arranged on the side of the inner roller frame (353) away from the fixed column (34), a reciprocating part (355) for pushing and pulling the movable plate (352) back and forth is arranged on the fixed column (34), a No. 2 screw (356) threadedly connected to the inner roller frame (353) is rotatably arranged inside the movable plate (352), and a rotating part (357) for driving the two rotating rings (351) to rotate synchronously in opposite directions is arranged on the fixed column (34).

5. The high-frequency welded pipe correction and repair equipment according to claim 4 is characterized in that: The reciprocating portion (355) comprises track grooves (3551) respectively provided on the left and right end surfaces of the fixed column (34); one side of the track groove (3551) is an arc-shaped structure close to the cylindrical surface of the fixed column (34); the other side of the track groove (3551) is an arc-shaped structure away from the cylindrical surface of the fixed column (34); the two track grooves (3551) on the fixed column (34) are staggered by 180°; the movable plate (352) slides inside the track groove (3551) at the corresponding position via a protruding column (3552) fixedly mounted on the side of the movable plate (352) close to the axis of the fixed column (34).

6. The high-frequency welded pipe correction and repair equipment according to claim 4 is characterized in that: The rotating part (357) includes a number one rotating bevel gear (3571) fixedly mounted on one side of the rotating ring (351) close to each other, a number one transmission bevel gear (3572) is rotatably mounted on the upper middle side of the fixed column (34), and the number one transmission bevel gear (3572) is simultaneously meshed with the two number one rotating bevel gears (3571), an actuator motor (3573) is fixedly mounted on the right side of the lower part of the vertical member (32), a transmission rod (3574) is rotatably mounted on the lower part of the vertical member (32) and inside the support tube (33), the right end of the transmission rod (3574) is fixedly connected to the output shaft of the actuator motor (3573), and the left end of the transmission rod (3574) is fixedly connected to the rotating ring (351) on the left side.

7. The high-frequency welded pipe correction and repair equipment according to claim 6 is characterized in that: The shaping assembly (37) comprises concave rollers (371) symmetrically arranged on the front and rear sides of the vertical member (32) for rotation, convex rollers (372) symmetrically arranged on the front and rear sides of the vertical member (32) for rotation, the concave rollers (371) and the convex rollers (372) at corresponding positions are arranged up and down, a driving roller (373) symmetrically arranged on the middle part of the vertical member (32) for rotation, two mutually meshing transmission gears (374) symmetrically arranged on the vertical member (32), the transmission gears (374) are connected to the driving rollers (373) at corresponding positions through belts, and the transmission gear (374) on the front side is connected to the transmission rod (3574) through belts.

8. The high-frequency welded pipe correction and repair equipment according to claim 1 is characterized in that: The outer roller assembly (36) comprises two rotating rings (361) rotatably arranged on the left side of the interior of the fixed tube (31), the rotating ring (361) is provided with a sliding plate (362) which slides along its radial direction, the sliding plate (362) is provided with an outer roller frame (363) which slides along the length direction of the sliding plate (362) on the side close to the center of the rotating ring (361), the outer roller frame (363) is rotatably provided with an outer contact roller (364) on the side close to the center of the rotating ring (361), the fixed tube (31) is provided with a moving part (365) which drives the sliding plate (362) to move back and forth, the sliding plate (362) is rotatably provided with a No. 3 screw (366) which is threadedly connected to the outer roller frame (363), and the fixed tube (31) is provided with a driving part (367) which drives the two rotating rings (361) to rotate synchronously in opposite directions.

9. The high-frequency welded pipe correction and repair equipment according to claim 8 is characterized in that: The moving part (365) includes two track ring plates (3651) fixedly mounted on the inner side of the fixed tube (31), the track ring plates (3651) are respectively located on the side where the two rotating rings (361) are close to each other, and push-pull grooves (3652) are provided on the side where the two track ring plates (3651) are away from each other, one side of the push-pull groove (3652) is an arc-shaped structure close to the axis position of the track ring plate (3651), and the other side of the push-pull groove (3652) is an arc-shaped structure away from the axis position of the track ring plate (3651), the two track ring plates (3651) are staggered at an angle of 180°, and the sliding plate (362) slides inside the push-pull groove (3652) at the corresponding position through a pillar (3653) fixedly mounted on the side away from the axis of the track ring plate (3651).

10. The high-frequency welded pipe correction and repair equipment according to claim 8, characterized in that: The driving part (367) comprises a cam frame (3671) fixedly mounted on the left side of the upper part of the fixed tube (31); two vertical sections of the cam frame (3671) are both rotatably provided with a second transmission bevel gear (3672); a driving motor (3673) is fixedly mounted on the lower part of the horizontal section of the cam frame (3671); an active bevel gear (3674) is fixedly mounted on the output shaft of the driving motor (3673); the active bevel gear (3674) is meshed with the two second transmission bevel gears (3672) at the same time; and the second transmission bevel gear (3672) is connected to a rotating ring (361) at a corresponding position via a belt.

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