High speed combined stretch leveler

Abstract

A high-speed combined tension-bending straightening machine is mainly used for high-speed straightening operation of thin plate strips. The tension-bending straightening machine comprises a rack, a pressing device, an upper bending roller box, a lower lifting device, a lower bending roller box, a lower straightening roller box, an upper lifting device, an upper straightening roller box, an eleven-roller upper roller box, an eleven-roller lower roller box, a turning roller and a roller changing device. The high-speed combined tension-bending straightening machine has simple structure, the eleven-roller roller system is independently supported by special staggered arrangement, and the problems of plate surface scratch, plate strip vibration and abnormal noise caused by the inconsistent rotating speeds of the working roller, the intermediate roller and the supporting roller due to the diameter error of the roller system under the high-speed operation condition can be effectively solved; meanwhile, the eleven-roller lower roller box and the wear-resistant plates on the two sides of the rack are in planar small-gap cooperation, so that the eleven-roller lower roller box can be kept stable under high-speed operation.

Description

Technical Field

[0001] This utility model relates to the field of metal rolling equipment technology, specifically a high-speed tension bending and straightening unit used in steel strip continuous annealing units, galvanizing units, color coating units, tin plating units, degreasing units, tension straightening and rewinding units. Background Technology

[0002] In strip annealing units, galvanizing units, color coating units, tin plating units, degreasing units, and tension leveling and rewinding units, strip shape correction is required to improve the strip shape quality.

[0003] Currently, the linear speed of bending and straightening machines at home and abroad is generally below 500m / min. Once it exceeds 500m / min, problems such as high noise, vibration marks on the plate surface, and short life of components such as rotary joints and support rollers will occur, which will seriously affect the working environment and increase production costs and operation and maintenance intensity. Summary of the Invention

[0004] To overcome the shortcomings of the existing technology, the purpose of this invention is to provide a high-speed bending and straightening machine to improve production efficiency and reduce operating costs.

[0005] To achieve the above-mentioned objectives, the high-speed combined stretch bending and straightening machine of this invention includes a frame, a pressing device, an upper bending roller box, a lower lifting device, a lower bending roller box, a lower straightening roller box, an upper lifting device, an upper straightening roller box, an eleven-roll upper roller box, an eleven-roll lower roller box, a guide roller, and a roller changing device. The upper bending roller box, upper straightening roller box, and eleven-roll upper roller box mounted above the frame, and the lower bending roller box, lower straightening roller box, and eleven-roll lower roller box mounted below the frame, cause the strip to elongate and straighten the strip. Multiple guide rollers for guiding the strip are distributed within the frame.

[0006] Furthermore, the eight sets of support units 1 of the eleven-roller roller box are mounted on the roller box seat 5 by screws 8 and positioning pins. Each set of support units 1 has eleven support rollers 5 mounted on the support roller seat 1. The eleven support rollers 5 are arranged in an odd-even non-equidistant staggered pattern. Ten intermediate rollers 4 are supported on the support rollers 5, and five work rollers 5 are supported on the ten intermediate rollers 4. Rotary joints 5 are installed at both ends of the work rollers 5 and the intermediate rollers 4. The rotary joints 5 are mounted on rotary joint supports 5. The rotary joint supports 5 are fixed to the roller box base 5 by screws 9. The roller box base 5 has both ends Each device is equipped with a suspension frame three and a bogie three. Four sets of rollers five are installed on the suspension frame three and the bogie three. The upper roller box of the eleven rollers is hung upside down on the roller box support plate of the pressing device one through the four rollers five. The bottom surface of the roller box base five abuts against the joint of the pressing device one. One end of the roller box base five is connected to the bogie three through a bearing. The roller box base five can rotate around the rotation center of the bogie three. A tie rod pin three for cooperating with the upper roller box traction device of the roller changing device is installed on the connecting rod five at the other end of the roller box base five. The connecting rod five extends out of the archway on one side of the roller changing device.

[0007] Furthermore, the eight sets of support units 2 of the eleven-roller lower roller box are mounted on the roller box seat 6 by screws 10 and positioning pins. Each set of support units 2 has thirteen support rollers 6 mounted on the support roller seat 2. The thirteen support rollers 6 are arranged in an odd-even row with non-equidistant staggered spacing. Twelve intermediate rollers 5 are supported on the support rollers 6, and six work rollers 6 are supported on the twelve intermediate rollers 5. Rotary joints 6 are installed at both ends of the work rollers 6 and intermediate rollers 5. The rotary joints 6 are mounted on rotary joint supports 6, and the rotary joint supports 6 are fixed to the roller box base 6 by screws 11. On one side of the roller box base 6, two rollers 6 are installed. The eleven-roll lower roller box is placed on the lower roller box track by the two rollers 6 and the support block 3 on the other side of the roller box base 6. The connecting rod 6 at one end of the roller box base 6 is provided with a pin hole 3 for cooperating with the lower roller box traction device of the roller changing device. The connecting rod 6 extends out of the archway on one side of the roller changing device. Two sets of four copper sliding rods are installed on the slider seats at both ends of the lower roller box base 6. The four copper sliding rods are in planar small clearance fit with the wear-resistant plates on both sides of the frame. The small clearance is 0.05-0.1mm.

[0008] Furthermore, the frame consists of two side arches, upper crossbeam one, upper crossbeam two, upper crossbeam three, lower crossbeam one, and lower crossbeam two. The two side arches are connected to the upper crossbeam one, upper crossbeam two, upper crossbeam three, lower crossbeam one, and lower crossbeam two as a whole by screws. The two ends of the lower roller box track are fixed on the two side arches and extend out of the arches on one side of the roller changing device. The lower roller box track consists of eight tracks in four groups, which slide in cooperation with the rollers of two sets of lower bending roller boxes, one set of lower straightening roller boxes, and one set of eleven-roller lower roller boxes, respectively.

[0009] Furthermore, the pressing device comprises three sets, including pressing device two and pressing device three acting on two sets of upper bending roller boxes respectively, and pressing device one acting on one set of eleven roller boxes. The pressing devices one, two, and three have the same structure, and the pressing force of pressing device three is greater than that of pressing devices two and three. Pressing devices one, two, and three are each composed of two pressing cylinders, a roller box support plate, and a connector. The pressing cylinders of pressing devices two and three are respectively fixed to the upper crossbeam one by screw one, and the pressing cylinder of pressing device one is fixed to the upper crossbeam three by screw one. The connector is threadedly connected to the pressing cylinder, and the top of the connector is locked to the roller box support plate with a round nut. The connector extends 1mm-2mm below the roller box support plate.

[0010] Furthermore, the upper bending roller box consists of two sets. The roller shafts of the three rows of support rollers of the upper bending roller box are mounted on the roller box base. The support rollers are connected to the roller shafts via bearings. Two intermediate rollers are supported on the support rollers, and one working roller is supported on the two intermediate rollers. Rotary joints are installed at both ends of the working roller and the intermediate rollers. The rotary joints are mounted on rotary joint supports, which are fixed to the roller box base by screws. Suspension frames and bogies are respectively installed at both ends of the roller box base. Four sets of rollers are installed on the frame 1; two upper bending roller boxes are respectively hung upside down on the roller box support plates of pressing device 2 and pressing device 3 via four rollers 1, and the bottom surface of roller box base 1 abuts against the joints of pressing device 2 and pressing device 3 respectively; one end of roller box base 1 is connected to bogie 1 through a bearing, and roller box base 1 can rotate around the rotation center of bogie 1; a pull rod pin 1 for cooperating with the upper roller box traction device of the roller changing device is installed on the connecting rod 1 at the other end of roller box base 1, and the connecting rod 1 extends out of the archway on one side of the roller changing device.

[0011] Furthermore, the lower lifting device comprises five sets, including lower lifting device one, lower lifting device two, lower lifting device three, lower lifting device four, and lower lifting device five, which respectively act on two sets of lower bending roller boxes, one set of lower straightening roller boxes, and one set of eleven-roll lower roller boxes. Lower lifting devices one, two, three, four, and five have identical structures. The top pressure of lower lifting devices four and five acting on the eleven-roll lower roller box is greater than the top pressure of lower lifting devices one, two, and three. Lower lifting devices one, two, three, four, and five are each driven by a reduction motor one mounted on the transmission side archway via a ball cage coupling. The tail of the lifting machine 1 and the geared motor 1 is equipped with an encoder 1 for displaying the lifting amount of the lifting machine 1. The lifting machine 1 is equipped with a top head 1, and a wear-resistant plate and a transition plate are installed on the top head 1. The transition plate is pressed onto the top head 1 by a disc spring and screw 2. A joint bearing is installed between the top head 1 and the transition plate. When the lower lifting device 4 and the lower lifting device 5 lift asynchronously, the eleven-roller lower roller box can automatically align itself to improve the stress state. The lifting machines 1 of the lower lifting device 1, lower lifting device 2, and lower lifting device 3 are fixed to the lower crossbeam 1 by screws. The lifting machines 1 of the lower lifting device 4 and lower lifting device 5 are fixed to the lower crossbeam 2 by screws. The top head 1 abuts against the bottom surface of the corresponding roller box base of the two sets of lower bending roller boxes, one set of lower straightening roller boxes, and one set of eleven-roller lower roller boxes.

[0012] Furthermore, the lower bending roller box consists of two sets. The roller shafts of the three rows of support rollers 2 of the lower bending roller box are mounted on the roller box base 2. The rollers of the support rollers 2 are connected to the roller shafts via bearings. Two intermediate rollers 2 are supported on the support rollers 2, and one working roller 2 is supported on the two intermediate rollers 2. Rotary joints 2 are installed at both ends of the working roller 2 and the intermediate rollers 2. The rotary joints 2 are mounted on rotary joint supports 2. The rotary joint supports 2 are fixed to the roller box base 2 by screws 4. Two rollers 2 are installed on one side of the roller box base 2. The lower bending roller box is placed on the lower roller box track by the two rollers 2 and the support block 1 on the other side of the roller box base 2. A pin hole 1 is provided on the connecting rod 2 at one end of the roller box base 2 for cooperating with the lower roller box traction device of the roller changing device. The connecting rod 2 extends out of the archway on one side of the roller changing device.

[0013] Furthermore, the lower straightening roller box is a set. The roller shafts of the three rows of support rollers 3 of the lower straightening roller box are mounted on the roller box base 3. The rollers of the support rollers 3 are connected to the roller shafts through bearings. Two intermediate rollers 3 are supported on the support rollers 3, and one working roller 3 is supported on the two intermediate rollers 3. Rotary joints 3 are installed at both ends of the working roller 3 and the intermediate rollers 3. The rotary joints 3 are mounted on rotary joint supports 3. The rotary joint supports 3 are fixed to the roller box base 3 by screws 5. Two rollers 3 are installed on one side of the roller box base 3. The lower straightening roller box is placed on the lower roller box track through the two rollers 3 and the support block 2 on the other side of the roller box base 3. The connecting rod 3 installed at one end of the roller box base 3 is provided with pin holes 2 for cooperating with the lower roller box traction device of the roller changing device. The connecting rod 3 extends out of the archway on one side of the roller changing device.

[0014] Furthermore, the upper lifting device is a set that drives the upper straightening roller box to rise and fall. The upper lifting device is driven by a geared motor 2 installed on the transmission side of the archway, which drives two lifting machines 2 through a ball cage coupling 2. The tail of the geared motor 2 is equipped with an encoder 2 for displaying the lifting amount of the lifting machine 2. The lifting machine 2 is equipped with a top head 2. One end of the top head 2 is threadedly connected to the lifting machine 2, and the other end of the top head 2 is connected and fixed to the upper lifting device support plate. The top head 2 extends 1mm-2mm below the upper lifting device support plate. The top head 2 abuts against the bottom surface of the roller box base 4 of the upper straightening roller box. The lifting machine 2 of the upper lifting device is fixed to the upper crossbeam 2 by screws 6.

[0015] Furthermore, the upper straightening roller box is a set. The roller shafts of the two rows of support rollers 4 of the upper straightening roller box are mounted on the roller box base 4. The rollers of the support rollers 4 are connected to the roller shafts via bearings. One working roller 4 is supported on the two rows of support rollers 4. Rotary joints 4 are installed at both ends of the working roller 4. The rotary joints 4 are mounted on rotary joint supports 4. The rotary joint supports 4 are fixed to the roller box base 4 by screws 7. Suspension frames 2 and bogie frames 2 are respectively installed at both ends of the roller box base 4. Four sets of rollers are installed, and the upper straightening roller box is inverted on the upper lifting device support plate of the upper lifting device through the four rollers. The bottom surface of the roller box base four abuts against the top head two of the upper lifting device. One end of the roller box base four is connected to the bogie two through a bearing, and the roller box base four can rotate around the rotation center of the bogie two. The connecting rod four installed at the other end of the roller box base four is equipped with a pull rod pin two for cooperating with the upper roller box traction device of the roller changing device. The connecting rod four extends out of the archway on one side of the roller changing device.

[0016] Furthermore, the steering rollers are in multiple sets, and positioning sleeves are installed at both ends of the steering rollers. The positioning sleeves are installed in the corresponding holes of the two side archways by screws.

[0017] Furthermore, the roller changing trolley base of the roller changing device is driven by a hydraulic cylinder. The roller changing trolley base is connected to the piston rod end of the hydraulic cylinder by a pin. The cylinder barrel end of the hydraulic cylinder is installed on the hydraulic cylinder base, which is fixed to the ground. The roller changing trolley base is equipped with two sets of flat rollers and two sets of V-shaped rollers that can effectively prevent the roller changing trolley base from derailing. The two sets of flat rollers and two sets of V-shaped rollers are placed on two tracks, which are fixed to the ground. The roller changing trolley base is equipped with a roller changing frame, and the roller changing frame is equipped with four sets of upper roller box traction devices and four sets of lower roller box traction devices. After the four sets of upper roller box traction devices and four sets of lower roller box traction devices are connected to the pull rod pins or pin holes of the corresponding roller boxes, all roller boxes can be pulled out simultaneously under the driving force of the hydraulic cylinder.

[0018] Furthermore, the rotating handle 2 of the upper roller box traction device is connected to one end of the connecting plate via a connecting shaft, and the other end of the connecting plate is connected to the bracket. The bracket is slidably connected to the support 1. The support 1 is fixed to the roller changing car frame by screw 13. The bracket is provided with pin holes that cooperate with the pull rod pin 1 on the roller box base 1 of the two sets of upper bending roller boxes, the pull rod pin 2 on the roller box base 4 of the upper straightening roller box, and the pull rod pin 3 on the roller box base 5 of the eleventh roller box. The rotating handle 1 is installed at one end of the stop pin, and the other end of the stop pin passes into the hole of the bracket. The stop pin fitted in the hole of the bracket is slidably connected to the inner hole of the bracket. The side of the bracket is provided with a hole that cooperates with the stop pin.

[0019] Furthermore, the support 2 of the lower roller box traction device is provided with pin holes. When changing rollers, the pins are inserted into the pin holes 1 on the roller box base 2 of the two sets of lower bending roller boxes, the pin holes 2 on the roller box base 3 of the lower straightening roller box, the pin holes 3 on the roller box base 6 of the eleventh roller box, and the pin holes on the support 2, so that the lower bending roller box, the lower straightening roller box, the eleventh roller box and the lower roller box traction device are connected together.

[0020] Compared with the prior art, this utility model has a simple structure. The eleven-roll system adopts a special staggered arrangement, which can realize independent support of the working rolls. It can effectively solve the problems of uneven speed of working rolls, intermediate rolls and support rolls caused by the diameter error of the roll system when the strip is running at high speed, resulting in scratches on the strip surface, strip vibration and abnormal noise. At the same time, the lower roll box of the eleven rolls and the wear-resistant plates on both sides of the frame are in planar small clearance fit, which can ensure that the lower roll box of the eleven rolls remains stable under high speed operation. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0022] Figure 1 This is a simplified structural diagram of the present invention.

[0023] Figure 2 for Figure 1 Side view.

[0024] Figure 3 for Figure 1 A simplified structural diagram of the machine frame.

[0025] Figure 4 for Figure 3 Side view.

[0026] Figure 5 for Figure 1 A simplified structural diagram of the pressing device.

[0027] Figure 6 for Figure 1 A simplified structural diagram of the lowering and lifting device.

[0028] Figure 7 for Figure 6 AA sectional view.

[0029] Figure 8 for Figure 1 A simplified structural diagram of the upper bending roller box.

[0030] Figure 9 for Figure 1 A simplified structural diagram of the lower bending roller box.

[0031] Figure 10 for Figure 1 A simplified structural diagram of the lower straightening roller box.

[0032] Figure 11 for Figure 1 A simplified structural diagram of the lifting device.

[0033] Figure 12 for Figure 1 A simplified structural diagram of the upper straightening roller box.

[0034] Figure 13 for Figure 1 A simplified structural diagram of the eleven-roller upper roller box.

[0035] Figure 14 for Figure 1 A simplified structural diagram of the eleven-roller lower roller box.

[0036] Figure 15 for Figure 1 A simplified structural diagram of the steering roller.

[0037] Figure 16 for Figure 2 A simplified structural diagram of the roller changing device.

[0038] Figure 17 for Figure 16 A simplified three-dimensional structural diagram of the roller changing device.

[0039] Figure 18 for Figure 16 A simplified structural diagram of the upper roller box traction device.

[0040] Figure 19 for Figure 18 Side view.

[0041] Figure 20 for Figure 16 A simplified structural diagram of the lower roller box traction device.

[0042] Figure 21 for Figure 13 A simplified structural diagram of the supporting single unit.

[0043] Figure 22 for Figure 14 A simplified structural diagram of the supporting single unit.

[0044] In the diagram: 1. Frame; 2. Pressing device; 3. Upper bending roller box; 4. Lower lifting device; 4-1. Lower lifting device one; 4-2. Lower lifting device two; 4-3. Lower lifting device three; 4-4. Lower lifting device four; 4-5. Lower lifting device five; 5. Lower bending roller box; 6. Lower straightening roller box; 7. Upper lifting device; 8. Upper straightening roller box; 9. Eleven-roller upper roller box; 10. Eleven-roller lower roller box; 11. Steering roller; 12. Roller changing device; 13. Archway; 14. Upper crossbeam one; 15. Upper crossbeam two; 16. Upper crossbeam three; 17. Lower crossbeam one; 18. Lower crossbeam two; 19. Lower roller box track; 20. Pressing cylinder; 21. Roller box support plate; 22. Joint; 23. Screw one; 24. Round nut; 101. Gear motor 102. Ball cage coupling; 103. Elevator; 105. Encoder; 104. Top head; 106. Wear-resistant plate; 107. Transition plate; 108. Disc spring; 109. Screw 2; 110. Spherical plain bearing; 25. Roller box base; 25-1. Connecting rod; 25-2. Tie rod pin; 26. Support roller; 27. Intermediate roller; 28. Working roller; 29. ​​Rotary joint; 30. Bogie; 31. Roller; 32. Suspension frame; 33. Rotary joint support; 34. Screw 3; 35. Roller box base 2; 35-1. Connecting rod 2; 35-2. Pin hole 1; 36. Support roller 2; 37. Intermediate roller 2; 38. Working roller 2; 39. Rotary joint 2; 40. Rotary joint 41. Head support 2; 42. Screw 4; 43. Roller 2; 44. Support block 1; 45. Roller box base 3; 46. Connecting rod 3; 47. Pin hole 2; 48. Support roller 3; 49. Intermediate roller 3; 50. Working roller 3; 51. Rotary joint 3; 52. Rotary joint support 3; 53. Screw 5; 54. Roller 3; 55. Support block 2; 56. Gear motor 2; 57. Elevator 2; 58. Ball cage coupling 2; 59. Encoder 2; 50. Upper lifting device support plate; 51. Top head 2; 52. Screw 6; 60. Roller box base 4; 60. Connecting rod 4; 60. Tie rod pin 2; 61. Support roller 4; 62. Working roller 4; 63. Rotary joint 4; 64. Rotary joint support 4; 65. Screw 7; 66. Bogie II; 67. Roller IV; 68. Suspension II; 69. Roller Box Base V; 69-1. Connecting Rod V; 69-2. Tie Rod Pin III; 70. Support Unit I; 70-1. Support Roller V; 70-2. Support Roller Seat I; 70-3. Screw V; 70-4. Positioning Pin; 71. Intermediate Roller IV; 72. Working Roller V; 73. Rotary Joint V; 74. Rotary Joint Support V; 75. Screw IX; 76. Bogie III; 77. Roller V; 78. Suspension III; 85. Roller Box Base VI; 85-1. Connecting Rod VI; 85-2. Pin Hole III; 86. Support Unit II; 86-1. Support Roller VI; 86-2. Support Roller Seat II; 86-3. Positioning Pin; 86-4. Screw X; 87. Intermediate Roller V;88. Working roller six; 89. Rotary joint six; 90. Rotary joint support six; 91. Screw eleven; 92. Roller six; 93. Support block three; 94. Slider seat; 95. Copper rod; 98. Steering roller; 99. Positioning sleeve; 100. Screw twelve; 111. Track; 112. V-roller; 113. Roller changing trolley base; 114. Roller changing trolley frame; 115. Lower roller box traction device; 116. Upper roller box traction device; 117. Hydraulic cylinder base; 118. Hydraulic cylinder; 119. Pin shaft; 120. Flat roller; 121. Bracket; 122. Support one; 123. Screw thirteen; 124. Rotating handle two; 125. Connecting shaft; 126. Connecting plate; 127. Stop pin; 128. Rotating handle one; 129. Pin; 130. Support two. Detailed Implementation

[0045] To make the invention's objectives, technical solutions, and advantages clearer, the present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of protection of the present invention.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 As shown, the high-speed combined bending and straightening machine of this utility model is mainly used for high-speed straightening of thin plates. It includes a frame 1, a pressing device 2, an upper bending roller box 3, a lower lifting device 4, a lower bending roller box 5, a lower straightening roller box 6, an upper lifting device 7, an upper straightening roller box 8, an eleven-roll upper roller box 9, an eleven-roll lower roller box 10, a guide roller 11, and a roller changing device 12. The upper bending roller box 3, the upper straightening roller box 8, and the eleven-roll upper roller box 9 mounted above the frame 1, and the lower bending roller box 5, the lower straightening roller box 6, and the eleven-roll lower roller box 10 mounted below the frame 1, cause the strip to elongate and straighten the strip. Multiple guide rollers 11 for guiding the strip are distributed within the frame 1.

[0047] The frame 1 consists of two side arches 13, an upper crossbeam 14, an upper crossbeam 2 15, an upper crossbeam 3 16, a lower crossbeam 17, and a lower crossbeam 2 18. The two side arches 13 are connected to the upper crossbeam 14, upper crossbeam 2 15, upper crossbeam 3 16, lower crossbeam 17, and lower crossbeam 2 18 as a whole by screws. The two ends of the lower roller box track 19 are fixed on the two side arches 13 and extend out of the arches 13 on one side of the roller changing device 12, so that the upper roller box traction device 116 and the lower roller box traction device 115 of the roller changing device 12 can be connected to the pull rod pins or pin holes of the corresponding roller boxes, serving as a sliding track for pulling out all roller boxes under the driving force of the hydraulic cylinder 118. The lower roller box track 19 consists of eight tracks in four groups, which are respectively slidably engaged with the rollers of two sets of lower bending roller boxes 5, one set of lower straightening roller boxes 6, and one set of eleven-roller lower roller boxes 10.

[0048] The pressing device 2 consists of three sets, including pressing device 2-2 and pressing device 2-3 acting on two sets of upper bending roller boxes 3 respectively, and pressing device 2-1 acting on one set of eleven-roll upper roller box 9. The pressing devices 2-1, 2-2, and 2-3 have the same structure. The pressing force of pressing device 2-1 is greater than that of pressing devices 2-2 and 2-3. The pressing devices 2-1, 2-2, and 2-3 are respectively composed of two... The device consists of a pressing cylinder 20, a roller box support plate 21, and a connector 22. The pressing cylinders 20 of pressing device 2-2 and pressing device 3-3 are fixed to the upper crossbeam 14 by screws 23, and the pressing cylinder 20 of pressing device 2-1 is fixed to the upper crossbeam 16 by screws 23. The connector 22 is threaded to the pressing cylinder 20, and the top of the connector 22 is locked to the roller box support plate 21 by a round nut 24. The connector 22 extends 1mm-2mm below the roller box support plate 21. During operation, the piston rods of the pressing cylinders 20 of pressing device 2-1, pressing device 2-2, and pressing device 3-3 extend, which can drive the two sets of upper bending roller boxes 3 and one set of eleven-roll upper roller boxes 9 to move downward, so that the strip is appropriately bent and the tensile tension is applied to produce the required elongation. When the tension leveler is not needed, the piston rods of the pressing cylinders 20 retract.

[0049] There are two sets of upper bending roller boxes 3. The roller shafts of the three rows of support rollers 26 of the upper bending roller box 3 are mounted on the roller box base 25. The rollers of the support rollers 26 are connected to the roller shafts through bearings. Two intermediate rollers 27 are supported on the support rollers 26, and one working roller 28 is supported on the two intermediate rollers 27. Rotary joints 29 are installed at both ends of the working roller 28 and the intermediate rollers 27. The rotary joints 29 are mounted on rotary joint supports 33. The rotary joint supports 33 are fixed to the roller box base 25 by screws 34. Suspension frames 32 and bogies 30 are installed at both ends of the roller box base 25, respectively. Four sets of rollers 31 are installed on the suspension frames 32 and the bogies 30. The two upper bending roller boxes 3 are respectively hung upside down on the roller box support plates 21 of the pressing device 2-2 and the pressing device 3-3 by the four rollers 31. The bottom surface of the roller box base 25 abuts against the joints 22 of the pressing device 2-2 and the pressing device 3-3, respectively. One end of the roller box base 25 is connected to the bogie 30 through a bearing. The roller box base 25 can rotate around the rotation center of the bogie 30, so that after the upper roller box traction device 116 of the roller changing device 12 pulls it out, it can be flipped so that the support roller 26, intermediate roller 27 and working roller 28 of the upper curved roller box 3 face upwards, which is convenient for replacement and maintenance. The connecting rod 25-1 at the other end of the roller box base 25 is equipped with a pull rod pin 25-2 for cooperating with the upper roller box traction device 116 of the roller changing device 12. The connecting rod 25-1 extends out of the archway 13 on one side of the roller changing device 12 so that the upper roller box traction device 113 of the roller changing device 12 can be connected to the pull rod pin 25-2.

[0050] The lower lifting device 4 consists of five sets, including lower lifting device 1 4-1, lower lifting device 2 4-2, lower lifting device 3 4-3, lower lifting device 4-4, and lower lifting device 5 4-5, which respectively act on two sets of lower bending roller boxes 5, one set of lower straightening roller boxes 6, and one set of eleven-roll lower roller boxes 10. The lower lifting devices 1 4-1, 2 4-2, 3 4-3, 4 4-4, and 5 4-5 have the same structure and act on the eleven-roll lower roller. The top pressure of the lower lifting devices 4-4 and 4-5 on box 10 is greater than the top pressure of the lower lifting devices 4-1, 4-2, and 4-3. The lower lifting devices 4-1, 4-2, 4-3, 4-4, and 4-5 are driven by a geared motor 101 mounted on the transmission side of the gate 13, which drives two lifting machines 103 via a ball cage coupling 102. The tail of machine 101 is equipped with an encoder 105 for displaying the lifting amount of elevator 103. Elevator 103 is equipped with a top head 104. Wear-resistant plate 106 and transition plate 107 are mounted on the top head 104. The transition plate 107 is pressed onto the top head 104 by a disc spring 108 and screw 109. A spherical bearing 110 is installed between the top head 104 and the transition plate 107. When the lower lifting device 4-4 and the lower lifting device 5-5 lift asynchronously, the eleventh roller... The lower roller box 10 can automatically align itself to improve the stress state. The lifting mechanism 103 of the lower lifting device 1 4-1, lower lifting device 2 4-2, and lower lifting device 3 4-3 is fixed to the lower crossbeam 1 17 with screws. The lifting mechanism 103 of the lower lifting device 4-4 and lower lifting device 5 4-5 is fixed to the lower crossbeam 2 18 with screws. The top head 104 abuts against the bottom surface of the corresponding roller box base of the two sets of lower bending roller boxes 5, one set of lower straightening roller boxes 6, and one set of eleven-roller lower roller boxes 10. During operation, the lifting mechanism 103 of the lower lifting devices 4-1, 4-2, 4-3, 4-4, and 4-5 drives the top head 104 upward, which in turn drives the two sets of lower bending roller boxes 5, one set of lower straightening roller boxes 6, and one set of eleven-roller lower roller boxes 10 to move upward, causing the strip to bend appropriately and produce the required elongation in conjunction with the tensile tension. When the straightening machine is not needed, the lifting mechanism 103 drives the top head 104 downward.

[0051] The lower bending roller box 5 consists of two sets. The roller shafts of the three rows of support rollers 36 of the lower bending roller box 5 are mounted on the roller box base 35. The rollers of the support rollers 36 are connected to the roller shafts via bearings. Two intermediate rollers 37 are supported on the support rollers 36, and one working roller 38 is supported on the two intermediate rollers 37. Rotary joints 39 are installed at both ends of the working roller 38 and the intermediate rollers 37. The rotary joints 39 are mounted on rotary joint supports 40, and the rotary joint supports 40 are fixed to the roller box base 35 by screws 41. Two rollers 42 are mounted on one side of the roller box base 35. The lower curved roller box 5 is placed on the lower roller box track 19 via the two rollers 42 and the support block 43 on the other side of the roller box base 35. A pin hole 35-2 is provided on the connecting rod 35-1 at one end of the roller box base 35 for cooperating with the lower roller box traction device 115 of the roller changing device 12. The connecting rod 35-1 extends out of the archway 13 on one side of the roller changing device 12 so that the lower roller box traction device 115 of the roller changing device 12 can be connected to the pin hole 35-2.

[0052] The lower straightening roller box 6 is a set. The roller shafts of the three rows of support rollers 3 45 of the lower straightening roller box 6 are mounted on the roller box base 3 44. The rollers of the support rollers 3 45 are connected to the roller shafts through bearings. Two intermediate rollers 3 46 are supported on the support rollers 3 45, and one working roller 3 47 is supported on the two intermediate rollers 3 46. Rotary joints 3 48 are installed at both ends of the working roller 3 47 and the intermediate roller 3 46. The rotary joints 3 48 are mounted on rotary joint supports 3 49. The rotary joint supports 3 49 are fixed to the roller box base 3 44 by screws 5 50. Two rollers 51 are mounted on one side of the roller box base 3 44. The lower straightening roller box 6 is placed on the lower roller box track 19 via the two rollers 51 and the support block 52 on the other side of the roller box base 3 44. A pin hole 44-2 is provided on the connecting rod 44-1 at one end of the roller box base 3 44 for cooperating with the lower roller box traction device 115 of the roller changing device 12. The connecting rod 44-1 extends out of the archway 13 on one side of the roller changing device 12 so that the lower roller box traction device 115 of the roller changing device 12 can be connected to the pin hole 44-2.

[0053] The upper lifting device 7 is a set, which drives the upper straightening roller box 8 to rise and fall. The upper lifting device 7 is driven by a geared motor 253 installed on the transmission side archway 13, which drives two lifting machines 254 through a ball cage coupling 255. The tail of the geared motor 253 is equipped with an encoder 256 for displaying the lifting amount of the lifting machine 254. The lifting machine 254 is equipped with a top head 258. One end of the top head 258 is threadedly connected to the lifting machine 254, and the other end of the top head 258 is connected and fixed to the upper lifting device support plate 57. The top head 258 extends 1mm-2mm below the upper lifting device support plate 57. The top head 258 abuts against the bottom surface of the roller box base 460 of the upper straightening roller box 8. The lifting machines 254 of the upper lifting device 7 are fixed to the upper crossbeam 215 by screws 659. During operation, the lifting device 7's second lifting platform 54 drives the second top head 58 to push downwards, which can drive the upper straightening roller box 8 to move downwards to straighten the strip. When the straightening machine does not need to be put into operation, the lifting platform 54 drives the second top head 58 to move upwards.

[0054] The upper straightening roller box 8 is a set. The roller shafts of the two rows of support rollers 461 of the upper straightening roller box 8 are mounted on the roller box base 460. The rollers of the support rollers 461 are connected to the roller shafts through bearings. A working roller 462 is supported on the two rows of support rollers 461. Rotary joints 463 are installed at both ends of the working roller 462. The rotary joints 463 are mounted on rotary joint supports 464. The rotary joint supports 464 are fixed to the roller box base 460 by screws 765. Suspension frames 268 and bogie frames 266 are respectively installed at both ends of the roller box base 460. Four sets of rollers 467 are installed on the suspension frames 268 and bogie frames 266. The upper straightening roller box 8 is connected by four rollers. The roller box base 460 is inverted and hung on the upper lifting device support plate 57 of the upper lifting device 7; the bottom surface of the roller box base 460 abuts against the top head 2 58 of the upper lifting device 7; one end of the roller box base 460 is connected to the bogie 2 66 through a bearing, and the roller box base 460 can rotate around the rotation center of the bogie 2 66; the connecting rod 460-1 at the other end of the roller box base 460 is equipped with a pull rod pin 2 60-2 for cooperating with the upper roller box traction device 116 of the roller changing device 12, and the connecting rod 460-1 extends out of the archway 1 on one side of the roller changing device 12 so that the upper roller box traction device 116 of the roller changing device 12 can be connected to the pull rod pin 2 60-2.

[0055] The eight sets of support units 70 of the eleven-roll upper roller box 9 are mounted on the roller seat 69 of the roller box by screws 70-3 and positioning pins 70-4. Each set of support units 70 has eleven support rollers 70-1 mounted on the support roller seat 70-2. The eleven support rollers 70-1 are arranged in an odd-even row with non-equidistant staggered spacing. Ten intermediate rollers 71 are supported on the support rollers 70-1, and five work rollers 72 are supported on the ten intermediate rollers 71. This structure allows the five work rollers 72 to be independently supported and rotated. Rotary joints 73 are installed at both ends of the work rollers 72 and the intermediate rollers 71. The rotary joints 73 are mounted on rotary joint supports 74, and the rotary joint supports 74 are fixed to the roller box base 69 by screws 75. The two ends of the base 569 are respectively equipped with a suspension frame 378 and a bogie 376. Four sets of rollers 577 are installed on the suspension frame 378 and the bogie 376. The upper roller box 9 of the eleventh roller is hung upside down on the roller box support plate 21 of the pressing device 12-1 through the four rollers 577. The bottom surface of the roller box base 569 abuts against the joint 22 of the pressing device 12-1. One end of the roller box base 569 is connected to the bogie 376 through a bearing. The roller box base 569 can rotate around the rotation center of the bogie 376. The connecting rod 569-1 at the other end of the roller box base 569 is equipped with a pull rod pin 369-2 for cooperating with the upper roller box traction device 116 of the roller changing device 12. The connecting rod 569-1 extends out of the archway 13 on one side of the roller changing device 12.

[0056] The eight sets of support units 286 of the eleven-roll lower roller box 10 are mounted on the roller seat 685 of the roller box by screws 1086-4 and positioning pins 86-3. Each set of support units 286 has thirteen support rollers 686-1 mounted on the support roller seat 286-2. The thirteen support rollers 686-1 are arranged in an odd-even row with non-equidistant staggered spacing. Twelve intermediate rollers 587 are supported on the support rollers 686-1, and six work rollers 688 are supported on the twelve intermediate rollers 587. This structure allows the six work rollers 688 to be independently supported and rotated. Rotary joints 689 are installed at both ends of the work rollers 688 and the intermediate rollers 587. The rotary joints 689 are mounted on rotary joint supports 690, and the rotary joint supports 690 are fixed to the roller box base by screws 1191. On roller base 685, two rollers 692 are installed on one side. The eleven-roll lower roller box 10 is placed on the lower roller box track 19 via the two rollers 692 and the support block 393 on the other side of roller base 685. The connecting rod 685-1 at one end of roller base 685 is provided with a pin hole 385-2 for cooperating with the lower roller box traction device 115 of roller changing device 12. The connecting rod 685-1 extends out of the archway 13 on one side of roller changing device 12. Two sets of four copper sliding rods 95 are installed on the slider seats 94 at both ends of the lower roller box roller base 685. The four copper sliding rods 95 are in plane with the wear-resistant plates 131 on both sides of the frame with a small gap (0.05-0.1mm), which can ensure that the eleven-roll lower roller box 10 remains stable under high speed.

[0057] The steering rollers 11 are in multiple sets, and the two ends of the steering rollers 98 are equipped with positioning sleeves 99. The positioning sleeves 99 are installed in the corresponding holes of the two side archways 13 by screws 12 100.

[0058] The roller changing device 12's roller changing trolley base 113 is driven by a hydraulic cylinder 118. The roller changing trolley base 113 and the piston rod end of the hydraulic cylinder 118 are connected by a pin 119. The cylinder end of the hydraulic cylinder 118 is mounted on a hydraulic cylinder base 117, which is fixed to the ground. The roller changing trolley base 113 is equipped with two sets of flat rollers 120 and two sets of V-shaped rollers 112 to effectively prevent the roller changing trolley base 113 from derailing. Roller 112 is placed on two tracks 111, which are fixed to the ground. Roller changing trolley base 113 is equipped with roller changing frame 114. Roller changing frame 114 is equipped with four sets of upper roller box traction devices 116 and four sets of lower roller box traction devices 115. After the four sets of upper roller box traction devices 116 and four sets of lower roller box traction devices 115 are connected to the corresponding roller box pull rod pins or pin holes, all roller boxes can be pulled out simultaneously under the driving force of hydraulic cylinder 118.

[0059] The rotating handle 124 of the upper roller box traction device 116 is connected to one end of the connecting plate 126 via the connecting shaft 125. The other end of the connecting plate 126 is connected to the bracket 121. The bracket 121 is slidably connected to the support 122. The support 122 is fixed to the roller changing car frame 114 by screws 13 123. The bracket 121 is provided with a pull rod pin 25-2 on the roller box base 25 of the two sets of upper bending roller boxes 3 and the upper straightening roller box. The pull rod pin 2 60-2 on the roller box base 4 60 of roller box 8 and the pull rod pin 3 69-2 on the roller box base 5 69 of roller box 9 of roller box 11 have matching pin holes. The rotating handle 128 is installed on one end of the stop pin 127. The other end of the stop pin 127 is inserted into the hole of the bracket 121. The stop pin 127, which is fitted into the hole of the bracket 121, is slidably connected to the inner hole of the bracket 121. The side of the bracket 121 has a hole that matches the stop pin 127. When replacing the upper bending roller box 3, the upper straightening roller box 8, and the eleventh roller upper roller box 9, rotate the rotating handle 124. Under the action of the connecting plate 126, the bracket 121 is lifted, and the first tie rod pin 25-2, the second tie rod pin 60-2, and the third tie rod pin 69-2 are smoothly inserted into the pin holes on the bracket 121. Manually lift the rotating handle 128 to move the stop pin 127 to the right, thereby completing the stable connection between the upper bending roller box 3, the upper straightening roller box 8, the eleventh roller upper roller box 9 and the upper roller box traction device 116.

[0060] The support 130 of the lower roller box traction device 115 is provided with pin holes. When changing rollers, the pin 129 is inserted into the pin hole 35-2 on the roller box base 35 of the two sets of lower bending roller boxes 5, the pin hole 44-2 on the roller box base 34 of the lower straightening roller box 6, the pin hole 85-2 on the roller box base 6 of the eleventh roller box 10, and the pin hole on the support 130, so that the lower bending roller box 5, the lower straightening roller box 6, the eleventh roller box 10 and the lower roller box traction device 115 are connected together.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-speed combined bending and straightening machine, characterized in that: The high-speed combined bending and straightening machine includes a frame (1), a pressing device (2), an upper bending roller box (3), a lower lifting device (4), a lower bending roller box (5), a lower straightening roller box (6), an upper lifting device (7), an upper straightening roller box (8), an eleven-roll upper roller box (9), an eleven-roll lower roller box (10), a guide roller (11), and a roller changing device (12). The upper bending roller box (3), the upper straightening roller box (8), the eleven-roll upper roller box (9) mounted above the frame (1) and the lower bending roller box (5), the lower straightening roller box (6), and the eleven-roll lower roller box (10) mounted below the frame (1) cause the strip to elongate and straighten the strip. Multiple guide rollers (11) for guiding the strip are distributed inside the frame (1). The eight sets of support units 1 (70) of the eleven-roll upper roller box (9) are installed on the roller seat 5 (69) of the roller box by screws 8 (70-3) and positioning pins (70-4). Each set of support units 1 (70) has eleven support rollers 5 (70-1) installed on the support roller seat 1 (70-2). The eleven support rollers 5 (70-1) are arranged in an odd-even column with non-equidistant staggered arrangement. Ten intermediate rollers 4 (71) are supported on the support rollers 5 (70-1), and five work rollers 5 (72) are supported on the ten intermediate rollers 4 (71). The work rollers 5 (72) and intermediate rollers 4 (71) are supported on the support rollers 5 (70-1). (71) has a rotary joint five (73) installed at both ends. The rotary joint five (73) is installed on the rotary joint support five (74). The rotary joint support five (74) is fixed to the roller box base five (69) by screw nine (75). The roller box base five (69) has a suspension frame three (78) and a bogie three (76) installed at both ends respectively. Four sets of roller five (77) are installed on the suspension frame three (78) and the bogie three (76). The roller box (9) on the eleventh roller is hung upside down on the roller box support plate (21) of the pressing device one (2-1) by four roller five (77). The bottom surface of the roller box base five (69) abuts against the joint (22) of the pressing device one (2-1); one end of the roller box base five (69) is connected to the bogie three (76) by a bearing, and the roller box base five (69) can rotate around the rotation center of the bogie three (76). The connecting rod five (69-1) mounted on the other end of the roller box base five (69) is equipped with a pull rod pin three (69-2) for cooperating with the upper roller box traction device (116) of the roller changing device (12). The connecting rod five (69-1) extends out of the archway (13) on one side of the roller changing device (12). The eight sets of support units 2 (86) of the eleven-roll lower roller box (10) are installed on the roller box base 6 (85) by screw 10 (86-4) and positioning pin (86-3). Each set of support units 2 (86) has thirteen support rollers 6 (86-1) installed on the support roller base 2 (86-2). The thirteen support rollers 6 (86-1) are arranged in an odd-even row with non-equidistant staggered arrangement. Twelve intermediate rollers 5 (87) are supported on the support rollers 6 (86-1), and six work rollers 6 (88) are supported on the twelve intermediate rollers 5 (87). Rotary joints 6 (89) are installed at both ends of the work rollers 6 (88) and intermediate rollers 5 (87). The rotary joints 6 (89) are installed on the rotary joint support 6 (90), and the rotary joint support 6 (90) is fixed to the roller box base 6 (85) by screw 11 (91). On the roller box base six (85), two rollers six (92) are installed on one side. The eleven-roller lower roller box (10) is placed on the lower roller box track (19) through the two rollers six (92) and the support block three (93) on the other side of the roller box base six (85). The connecting rod six (85-1) installed at one end of the roller box base six (85) is provided with a pin hole three (85-2) for cooperating with the lower roller box traction device (115) of the roller changing device (12). The connecting rod six (85-1) extends out of the archway (13) on one side of the roller changing device (12). Two sets of four copper sliding rods (95) are installed on the slider seats (94) installed at both ends of the lower roller box base six (85). The four copper sliding rods (95) are in planar small clearance fit with the wear-resistant plates (131) on both sides of the frame. The small clearance is 0.05-0.1mm.

2. The high-speed combined bending and straightening machine according to claim 1, characterized in that: The frame (1) consists of two side archways (13), upper crossbeam one (14), upper crossbeam two (15), upper crossbeam three (16), lower crossbeam one (17), and lower crossbeam two (18). The two side archways (13) are connected to the upper crossbeam one (14), upper crossbeam two (15), upper crossbeam three (16), lower crossbeam one (17), and lower crossbeam two (18) by screws. The two ends of the lower roller box track (19) are fixed on the two side archways (13) and extend out of the archway (13) on one side of the roller changing device (12). The lower roller box track (19) consists of eight tracks in four groups, which are respectively slidably engaged with the rollers of two sets of lower bending roller boxes (5), one set of lower straightening roller boxes (6), and one set of eleven-roller lower roller boxes (10).

3. The high-speed combined bending and straightening machine according to claim 1, characterized in that: The pressing device (2) consists of three sets, including pressing device two (2-2) and pressing device three (2-3) acting on two sets of upper bending roller boxes (3), and pressing device one (2-1) acting on one set of eleven roller upper roller box (9). The pressing device one (2-1), pressing device two (2-2), and pressing device three (2-3) have the same structure. The pressing force of pressing device three (2-1) is greater than that of pressing device two (2-2) and pressing device three (2-3). Pressing device one (2-1), pressing device two (2-2), and pressing device three (2-3) are each composed of two pressing devices. The device consists of a hydraulic cylinder (20), a roller box support plate (21), and a connector (22). The hydraulic cylinders (20) of the second pressing device (2-2) and the third pressing device (2-3) are fixed to the upper crossbeam (14) by screws (23). The hydraulic cylinders (20) of the first pressing device (2-1) are fixed to the upper crossbeam (16) by screws (23). The connector (22) is threadedly connected to the hydraulic cylinder (20). The top of the connector (22) is locked to the roller box support plate (21) by a round nut (24). The connector (22) extends 1mm-2mm below the roller box support plate (21).

4. The high-speed combined bending and straightening machine according to claim 1, characterized in that: The upper bending roller box (3) consists of two sets. The roller shafts of the three rows of support rollers (26) of the upper bending roller box (3) are mounted on the roller box base (25). The rollers of the support rollers (26) are connected to the roller shafts by bearings. Two intermediate rollers (27) are supported on the support rollers (26), and one working roller (28) is supported on the two intermediate rollers (27). Rotary joints (29) are installed at both ends of the working rollers (28) and the intermediate rollers (27). The rotary joints (29) are mounted on the rotary joint support (33). The rotary joint support (33) is fixed to the roller box base (25) by screws (34). The two ends of the roller box base (25) are respectively equipped with a suspension frame (32) and a bogie (30). Four sets of suspension frames (32) and bogies (30) are installed on the suspension frame (32) and the bogie (30). Roller 1 (31); two upper curved roller boxes (3) are respectively hung upside down on the roller box support plate (21) of pressing device 2 (2-2) and pressing device 3 (2-3) by four rollers 1 (31). The bottom surface of roller box base 1 (25) abuts against the joint (22) of pressing device 2 (2-2) and pressing device 3 (2-3); one end of roller box base 1 (25) is connected to bogie 1 (30) by bearing. Roller box base 1 (25) can rotate around the rotation center of bogie 1 (30); a pull rod pin 1 (25-2) for cooperating with the upper roller box traction device (116) of roller changing device (12) is installed on the connecting rod 1 (25-1) at the other end of roller box base 1 (25). The connecting rod 1 (25-1) extends out of the archway (13) on one side of roller changing device (12).

5. The high-speed combined tension bending straightening machine according to claim 1, characterized in that: The lower lifting device (4) consists of five sets, including lower lifting device one (4-1), lower lifting device two (4-2), lower lifting device three (4-3), lower lifting device four (4-4), and lower lifting device five (4-5) that act on two sets of lower bending roller boxes (5), one set of lower straightening roller boxes (6), and one set of eleven-roll lower roller boxes (10), respectively. The structures of lower lifting device one (4-1), lower lifting device two (4-2), lower lifting device three (4-3), lower lifting device four (4-4), and lower lifting device five (4-5) are the same, and they act on the eleven-roll lower roller. The top pressure of the lower lifting device four (4-4) and lower lifting device five (4-5) on the box (10) is greater than the top pressure of the lower lifting device one (4-1), lower lifting device two (4-2), and lower lifting device three (4-3); the lower lifting device one (4-1), lower lifting device two (4-2), lower lifting device three (4-3), lower lifting device four (4-4), and lower lifting device five (4-5) are driven by the geared motor one (101) installed on the transmission side archway (13) through the ball cage coupling one (102) to drive the two lifting machines one (103). The tail of the first (101) is equipped with an encoder (105) for displaying the lifting amount of the first (103) elevator. The first (103) elevator has a top head (104) installed on it. A wear plate (106) and a transition plate (107) are installed on the top head (104). The transition plate (107) is pressed onto the top head (104) by a disc spring (108) and a screw (109). A spherical bearing (110) is installed between the top head (104) and the transition plate (107). When the lower lifting device four (4-4) and the lower lifting device five (4-5) lift asynchronously, the ten The lower roller box (10) can automatically align itself to improve the stress state. The lifting mechanism (103) of the lower lifting device 1 (4-1), the lower lifting device 2 (4-2), and the lower lifting device 3 (4-3) is fixed to the lower crossbeam 1 (17) by screws. The lifting mechanism (103) of the lower lifting device 4 (4-4) and the lower lifting device 5 (4-5) is fixed to the lower crossbeam 2 (18) by screws. The top head 1 (104) abuts against the bottom surface of the corresponding roller box base of the two sets of lower bending roller boxes (5), one set of lower straightening roller boxes (6), and one set of eleven-roller lower roller boxes (10).

6. The high-speed combined bending and straightening machine according to claim 1, characterized in that: The lower bending roller box (5) consists of two sets. The roller shafts of the three rows of support rollers (36) of the lower bending roller box (5) are mounted on the roller box base (35). The rollers of the support rollers (36) are connected to the roller shafts by bearings. Two intermediate rollers (37) are supported on the support rollers (36), and one working roller (38) is supported on the two intermediate rollers (37). Rotary joints (39) are installed at both ends of the working roller (38) and the intermediate rollers (37). The rotary joints (39) are mounted on the rotary joint support (40), and the rotary joint support (40) is secured by screws. (41) Fixed on roller box base two (35), two rollers two (42) are installed on one side of roller box base two (35), and the lower bending roller box (5) is placed on the lower roller box track (19) through the two rollers two (42) and the support block one (43) on the other side of roller box base two (35); the connecting rod two (35-1) installed at one end of roller box base two (35) is provided with a pin hole one (35-2) for cooperating with the lower roller box traction device (115) of the roller changing device (12), and the connecting rod two (35-1) extends out of the archway (13) on one side of the roller changing device (12).

7. The high-speed combined bending and straightening machine according to claim 1, characterized in that: The lower straightening roller box (6) is a set. The roller shafts of the three rows of support rollers (45) of the lower straightening roller box (6) are installed on the roller box base (44). The rollers of the support rollers (45) are connected to the roller shafts by bearings. Two intermediate rollers (46) are supported on the support rollers (45). One working roller (47) is supported on the two intermediate rollers (46). Rotary joints (48) are installed at both ends of the working roller (47) and the intermediate rollers (46). The rotary joints (48) are installed on the rotary joint supports (49). The rotary joint supports (49) are secured by screws. Five (50) is fixed on roller box base three (44). Two rollers three (51) are installed on one side of roller box base three (44). The lower straightening roller box (6) is placed on the lower roller box track (19) through the two rollers three (51) and the support block two (52) on the other side of roller box base three (44). The connecting rod three (44-1) installed at one end of roller box base three (44) is provided with a pin hole two (44-2) for cooperating with the lower roller box traction device (115) of the roller changing device (12). The connecting rod three (44-1) extends out of the archway (13) on one side of the roller changing device (12).

8. The high-speed combined bending and straightening machine according to claim 1, characterized in that: The upper lifting device (7) is a set that drives the upper straightening roller box (8) to rise and fall. The upper lifting device (7) is driven by a geared motor (53) installed on the transmission side archway (13) through a ball cage coupling (55) to drive two lifting machines (54). The tail of the geared motor (53) is equipped with an encoder (56) for displaying the lifting amount of the lifting machine (54). The lifting machine (54) is equipped with a top head (58). One end of the top head (58) is threadedly connected to the lifting machine (54), and the other end of the top head (58) is connected and fixed to the upper lifting device support plate (57). The top head (58) extends 1mm-2mm below the upper lifting device support plate (57). The top head (58) abuts against the bottom surface of the roller box base (60) of the upper straightening roller box (8). The lifting machine (54) of the upper lifting device (7) is fixed to the upper crossbeam (15) by screws (59).

9. The high-speed combined bending and straightening machine according to claim 1, characterized in that: The upper straightening roller box (8) is a set. The roller shafts of the two rows of support rollers (61) of the upper straightening roller box (8) are installed on the roller box base (60). The rollers of the support rollers (61) are connected to the roller shafts by bearings. A working roller (62) is supported on the two rows of support rollers (61). Rotary joints (63) are installed at both ends of the working roller (62). The rotary joints (63) are installed on the rotary joint supports (64). The rotary joint supports (64) are fixed to the roller box base (60) by screws (65). The two ends of the roller box base (60) are respectively equipped with suspension frames (68) and bogie frames (66). Four sets of rollers are installed on the suspension frames (68) and bogie frames (66). The upper straightening roller box (8) is inverted on the upper lifting device support plate (57) of the upper lifting device (7) by four rollers (67); the bottom surface of the roller box base (60) abuts against the top head (58) of the upper lifting device (7); one end of the roller box base (60) is connected to the bogie (66) by a bearing, and the roller box base (60) can rotate around the rotation center of the bogie (66); the connecting rod (60-1) at the other end of the roller box base (60) is equipped with a pull rod pin (60-2) for cooperating with the upper roller box traction device (116) of the roller changing device (12), and the connecting rod (60-1) extends out of the archway (13) on one side of the roller changing device (12).

10. The high-speed combined tension bending and straightening machine according to claim 1, characterized in that: The steering rollers (11) are in multiple sets, and positioning sleeves (99) are installed at both ends of the steering rollers (98). The positioning sleeves (99) are installed in the corresponding holes of the two side archways (13) by screw twelve (100).

11. The high-speed combined bending and straightening machine according to claim 1, characterized in that: The roller changing device (12) has a roller changing trolley base (113) driven by a hydraulic cylinder (118). The roller changing trolley base (113) and the piston rod end of the hydraulic cylinder (118) are connected by a pin (119). The cylinder end of the hydraulic cylinder (118) is mounted on a hydraulic cylinder base (117), which is fixed to the ground. The roller changing trolley base (113) is equipped with two sets of flat rollers (120) and two sets of V-shaped rollers (112) that can effectively prevent the roller changing trolley base (113) from derailing. Two sets of V-shaped rollers (112) are placed on two tracks (111), which are fixed to the ground. A roller changing trolley frame (114) is installed on the roller changing trolley base (113). Four sets of upper roller box traction devices (116) and four sets of lower roller box traction devices (115) are installed on the roller changing trolley frame (114). After the four sets of upper roller box traction devices (116) and four sets of lower roller box traction devices (115) are connected to the corresponding roller box pull rod pins or pin holes, all roller boxes can be pulled out simultaneously under the driving force of the oil cylinder (118).

12. The high-speed combined bending and straightening machine according to claim 1, characterized in that: The rotating handle 2 (124) of the upper roller box traction device (116) is connected to one end of the connecting plate (126) via the connecting shaft (125). The other end of the connecting plate (126) is connected to the bracket (121). The bracket (121) is slidably connected to the support 1 (122). The support 1 (122) is fixed to the roller changing car frame (114) by screw 13 (123). The bracket (121) is provided with a pull rod pin 1 (25-2) on the roller box base 1 (25) of the two sets of upper bending roller boxes (3) and the upper straightening roller. The pull rod pin 2 (60-2) on the roller box base 4 (60) of the box (8) and the pull rod pin 3 (69-2) on the roller box base 5 (69) of the eleventh roller (9) have matching pin holes. The rotating handle 1 (128) is installed on one end of the stop pin (127). The other end of the stop pin (127) is inserted into the hole of the bracket (121). The stop pin (127) fitted in the hole of the bracket (121) is slidably connected to the inner hole of the bracket (121). The side of the bracket (121) is provided with a hole that matches the stop pin (127).

13. The high-speed combined tension bending and straightening machine according to claim 1, characterized in that: The support two (130) of the lower roller box traction device (115) is provided with pin holes. When changing rollers, the pin (129) is inserted into the pin hole one (35-2) on the roller box base two (35) of the two sets of lower bending roller boxes (5), the pin hole two (44-2) on the roller box base three (44) of the lower straightening roller box (6), the pin hole three (85-2) on the roller box base six (85) of the eleventh roller lower roller box (10), and the pin hole on the support two (130), so that the lower bending roller box (5), the lower straightening roller box (6), the eleventh roller lower roller box (10) are connected to the lower roller box traction device (115).

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