Boiler tube clip rolling mill

Abstract

The present invention discloses a boiler tube clamp rolling mill, which includes a bed body, a driving device, a transmission unit, a rolling unit, and an adjusting unit. The driving device is fixedly connected to the transmission unit. The transmission unit is fixedly connected with an adjusting unit. The rolling unit is rotatably arranged on the adjusting unit. The rolling unit is composed of two parts, and there is a working gap between the two parts. The adjusting unit is used to adjust the working gap between the two parts of the rolling unit. The beneficial effect of the present invention is that through the convex rolling roll and the concave rolling roll for rolling, the flat steel completes the deformation of the longitudinal groove type and the transverse groove type in sequence under the action of the convex rolling roll and the concave rolling roll, rather than completing the deformation of multiple longitudinal and transverse groove types simultaneously like a press, thereby greatly reducing the deformation pressure, and also greatly reducing the power of the equipment motor.

Description

Technical Field

[0001] The present invention relates to the technical field of rolling equipment, especially the rolling mill for boiler pipe clamps. Background Art

[0002] The serpentine pipes of the economizer of large power station boilers are fixed and supported by pipe clamps. To ensure a certain rigidity and a certain expansion space for the serpentine pipes after heating, the pipe clamps must have longitudinal and transverse grooves, as Figure 1 shown. The pipe clamp consists of a clamping part, a fixing part and an expansion groove. When in use, the clamping part is used to support the serpentine pipe, and the fixing part is used to fix with other components. An expansion groove is provided to adapt to the thermal expansion of the serpentine pipe. In the prior art, when processing the pipe clamp, a strip-shaped flat steel is formed at one time on a hydraulic press or an oil press. If it is required to complete the pressing of longitudinal and transverse grooves on the strip-shaped flat steel at one time, the pressure of the press is generally very large, requiring 1600T or 2000T. Such a heavy press can only complete the pressing of one flat steel with a width of 60mm and a length of 2000 - 2500mm each time it presses. And the number of pipe clamps required for a boiler reaches hundreds to thousands. If the processed pipe clamps are to be used for a boiler, the press must work thousands of times, resulting in low production efficiency. At the same time, it is easy to cause serious friction on the oil cylinder and sliding surface of the large oil press. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem that the oil press can only process one short flat steel each time it works, and a rolling mill for boiler pipe clamps is designed.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows: a rolling mill for boiler pipe clamps, including a bed, a driving device, a transmission unit, a rolling unit, and an adjusting unit. The driving device is fixedly connected to the transmission unit, the transmission unit is fixedly connected with an adjusting unit, a rolling unit is rotatably arranged on the adjusting unit. The rolling unit consists of two parts, and there is a working gap between the two parts. The adjusting unit is used to adjust the working gap between the two parts of the rolling unit.

[0005] Further, the transmission unit includes a speed reducer, a driving gear, a driven gear, a first rotating shaft and a second rotating shaft. The input end of the speed reducer is fixedly connected to the driving device, the output end of the speed reducer is fixedly connected with a first rotating shaft, a driving gear is sleeved outside the first rotating shaft, the driving gear meshes with a driven gear, and a second rotating shaft is penetrated inside the driven gear. The driving gear and the driven gear are installed in a gear box fixed on the bed, and a cycloidal pinwheel speed reducer is connected to the distribution gear box.

[0006] Furthermore, the adjusting unit includes a fixed headstock, a movable headstock, a first universal coupling, a second universal coupling, and a pressurizing assembly. The fixed headstock is fixedly connected to the bed body. The movable headstock is slidably arranged on the bed body, and the height of the movable headstock is higher than that of the fixed headstock. The pressurizing assembly is fixed to the bed body and is fixedly connected to the movable headstock. A first universal coupling is fixedly connected between the fixed headstock and the first rotating shaft, and a second universal coupling is fixedly connected between the movable headstock and the second rotating shaft. Specifically, the fixed headstock includes a fixed box body and a third rotating shaft. The fixed box body is fixedly connected to the bed body, and the third rotating shaft is rotatably arranged on the fixed box body. The movable headstock includes a movable box body and a fourth rotating shaft. The movable box body is slidably arranged on the bed body, and the fourth rotating shaft is rotatably arranged on the movable box body. The output shaft of the distribution gearbox is connected to the third main shaft and the fourth rotating shaft respectively through the first universal coupling and the second universal coupling, driving the third rotating shaft and the fourth rotating shaft to rotate towards each other to provide power for rolling. The pressurizing assembly is used to change the height of the movable headstock so that the rolling unit remains in the working position.

[0007] Furthermore, the pressurizing assembly includes a pressurizing device and a fixing member. The pressurizing device is fixed to the bed body, and the telescopic end of the pressurizing device is fixed to the movable headstock. The pressurizing device and the bed body are fixedly connected through the fixing member. The movable headstock can move up and down under the push of the pressurizing device to apply a certain pressure to the flat steel to complete the rolling of the flat steel. The pressurizing device is fixed on the top plate of the vertical seat of the bed body, the piston rod is connected to the movable seat, and the oil cylinder pushes the convex rolling roll down to cause pre-deformation of the flat steel. After reaching the requirements, the 4 fixing members are fixed to prevent the movable headstock from moving up during rolling and ensure correct rolling forming.

[0008] Furthermore, the pressurizing assembly further includes a guide rod. The guide rod passes through the bed body and abuts against the box body of the fixed headstock. When the movable headstock moves, it ensures that the movement trajectory does not deviate.

[0009] Furthermore, the rolling unit includes a convex rolling roll and a concave rolling roll. The convex rolling roll is fixedly connected to the fourth rotating shaft, and the concave rolling roll is fixedly connected to the third rotating shaft. There is a pair of rolling rolls for rolling, namely a convex rolling roll and a concave rolling roll, which are respectively installed on the fixed headstock and the movable headstock. The groove shapes of the rolling rolls are one concave and one convex. When rotating, the concave and convex cooperate with each other to roll the flat steel into the required shape longitudinally and transversely.

[0010] Specifically, first rolling protrusions are radially distributed on the outer surface of the convex rolling roll. Second rolling protrusions are also distributed on the outer surface of the convex rolling roll. The first rolling protrusions and the second rolling protrusions are perpendicular to each other and are arranged in a staggered manner. First rolling grooves adapted to the first rolling protrusions and second rolling grooves adapted to the second rolling protrusions are provided on the outer surface of the concave rolling roll. The groove types of the rolling rolls are one concave and one convex, and the first rolling protrusions and the second rolling protrusions are arranged in a staggered manner, so that the flat steel sequentially completes the deformation of the longitudinal groove type and the transverse groove type under the action of the convex rolling roll and the concave rolling roll, instead of simultaneously completing the deformation of multiple longitudinal and transverse groove types like a press. Thus, the deformation pressure is greatly reduced. In this way, the power of the equipment motor is also greatly reduced.

[0011] Further, the rolling unit further includes an upper fixed disk and a lower fixed disk. The upper fixed disk is fixedly connected to the convex rolling roll, and the lower fixed disk is fixedly connected to the concave rolling roll. The upper fixed disk and the lower fixed disk fix the convex rolling roll and the concave rolling roll to the fourth rotating shaft and the third main shaft respectively, and facilitate installation and disassembly.

[0012] Further, a roll distance adjusting unit is fixed between the fixed machine head and the bed body. The roll distance adjusting unit includes a base, an adjusting screw, a first adjusting block, a second adjusting block, a support seat and a locking member. The support seat is inserted on the base. The support seat is fixedly connected to the first adjusting block. The first adjusting block is adapted to the second adjusting block. The adjusting screw sequentially passes through the base and the second adjusting block. Threads with opposite directions are provided on both sides of the adjusting screw. Locking members are threadedly connected to both ends of the adjusting screw. The locking members abut against the side wall of the base. By connecting the roll distance adjusting unit with variable distance to the bed body, when changing the diameters of the convex rolling roll and the concave rolling roll for processing pipe clamps of different specifications, the distance between the convex pressing roll and the concave pressing roll can be quickly adjusted.

[0013] Further, an elastic member is sleeved outside the adjusting rod. Both ends of the elastic member are respectively fixed to the adjusting block and the adjusting screw.

[0014] An unloading unit is further included. The unloading unit includes an unloading air cylinder, a connecting rod, a movable sleeve, a connecting shaft, a material receiving groove and a blanking box. One end of the unloading air cylinder is fixedly connected to the bed body. The other end of the unloading air cylinder is rotatably connected to the connecting rod. The connecting rod is fixedly connected to the movable sleeve. The movable sleeve is sleeved on the connecting shaft and can rotate along the connecting shaft. A baffle is fixedly connected to the movable sleeve. A discharge chute and a blanking box are fixed on the bed body. The discharge chute is in contact with the baffle. The blanking box is fixed below the discharge chute.

[0015] The beneficial effects achieved by the boiler pipe clamp rolling machine made by using the technical solution of the present invention are as follows:

[0016] 1. By rolling with a convex rolling roll and a concave rolling roll, the flat steel is deformed successively to complete the longitudinal groove type and the transverse groove type under the action of the convex rolling roll and the concave rolling roll, instead of simultaneously completing the deformation of multiple longitudinal and transverse groove types like a press, thus greatly reducing the deformation pressure and also greatly reducing the power of the equipment motor;

[0017] 2. Since the convex rolling roll and the concave rolling roll can rotate continuously, the length of the product that can be manufactured is not limited. Compared with the previous process that could only produce products with a length of 2 - 5 meters, the working efficiency is improved; BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the formed boiler pipe clamp according to the present invention;

[0019] Figure 2 is a front view of the first embodiment of the boiler pipe clamp rolling mill according to the present invention;

[0020] Figure 3 is a top view of the first embodiment of the boiler pipe clamp rolling mill according to the present invention;

[0021] Figure 4 is a side view of the first embodiment of the boiler pipe clamp rolling mill according to the present invention;

[0022] Figure 5 is a schematic rolling state diagram according to the present invention;

[0023] Figure 6 is a front view of the second and third embodiments of the boiler pipe clamp rolling mill according to the present invention;

[0024] Figure 7 is described in the present invention Figure 6 a partial enlarged view of the marked position A;

[0025] Figure 8 is a top view of the second and third embodiments of the boiler pipe clamp rolling mill according to the present invention;

[0026] Figure 9 is a front view of the first mounting seat and the guiding structure of the second and third embodiments of the boiler pipe clamp rolling mill according to the present invention;

[0027] Figure 10 is a front view of the convex pressing roll according to the present invention;

[0028] Figure 11 is a three - dimensional view of the convex pressing roll according to the present invention;

[0029] Figure 12 is a front view of the discharging unit in the second and third embodiments of the boiler pipe clamp rolling mill according to the present invention;

[0030] Figure 13 It is a schematic structural diagram of the roll distance adjustment unit in the fourth embodiment of the boiler tube clamp rolling mill according to the present invention;

[0031] In the figure, 1 is the bed; 11 is the vertical seat; 12 is the slide rail;

[0032] 2 is the driving device;

[0033] 3 is the transmission unit; 31 is the reducer; 32 is the driving gear; 33 is the driven gear; 34 is the first rotating shaft; 35 is the second rotating shaft; 36 is the gear box;

[0034] 4 is the rolling unit; 41 is the convex rolling roll; 411 is the first rolling protrusion; 412 is the second rolling protrusion; 413 is the first arrangement area; 414 is the second arrangement area; 415 is the positioning hole; 42 is the concave rolling roll; 421 is the first rolling groove; 422 is the second rolling groove; 43 is the upper fixing plate; 44 is the lower fixing plate; 45 is the adjusting bolt;

[0035] 5 is the adjusting unit; 51 is the fixed machine head; 511 is the fixed box body; 512 is the third rotating shaft; 52 is the movable machine head; 521 is the movable box body; 522 is the fourth rotating shaft; 53 is the first universal coupling; 54 is the second universal coupling; 55 is the pressurizing component; 551 is the pressurizing device; 552 is the fixing part; 553 is the guide rod;

[0036] 6 is the roll distance adjustment unit; 61 is the base; 62 is the adjusting screw; 63 is the first adjusting block; 64 is the second adjusting block; 65 is the support seat; 66 is the locking part; 67 is the first toothed structure; 68 is the second toothed structure; 69 is the T-shaped slider; 610 is the chute;

[0037] 7 is the discharging unit; 71 is the discharging cylinder; 72 is the connecting rod; 73 is the movable sleeve; 74 is the connecting shaft; 75 is the discharging chute; 76 is the baffle; 77 is the sensor;

[0038] 8 is the flat steel; 81 is the clamping part; 82 is the fixing part; 83 is the expansion groove;

[0039] 9 is the feeding unit; 91 is the first mounting seat; 92 is the feeding seat; 93 is the second mounting seat; 94 is the feeding roll; 95 is the driving pulley; 96 is the driven pulley; 97 is the conveyor belt;

[0040] 10 is the guiding structure; 101 is the guiding seat; 102 is the guiding wheel; 103 is the chute; 104 is the locking bolt. Detailed implementation manners

[0041] Embodiment 1:

[0042] The present invention will be specifically described below with reference to the accompanying drawings. A boiler tube clamp rolling mill is used to process tube clamps, such as Figure 1 shown. The tube clamp is composed of a clamping portion 81, a fixing portion 82, and an expansion groove 83. In use, the clamping portion 81 is used to support the serpentine tube, and the fixing portion 82 is used to fix to other components. An expansion groove 83 is provided to accommodate the thermal expansion of the serpentine tube. The boiler tube clamp rolling mill, as Figures 2 - 4 shown, includes a bed 1, a driving device 2, a transmission unit 3, a rolling unit 4, and an adjustment unit 5. The driving device 2 is fixedly connected to the transmission unit 3. The transmission unit 3 is fixedly connected with an adjustment unit 5. The rolling unit 4 is rotatably provided on the adjustment unit 5. The rolling unit 4 is composed of two parts, and there is a working gap between the two parts. The adjustment unit 5 is used to adjust the working gap between the two parts of the rolling unit 4. The bed 1 is made of steel plates welded and then precision machined. The bed 1 has two vertical box body 521 structures for accommodating various components. One is a gear box 36 for accommodating the driving gear 32 and the driven gear 33, and the other is a vertical seat 11 for accommodating the movable head 52 and the fixed head 51. The driving device 2 can be selected as a motor, a motor, etc. First, adjust the adjustment unit 5 so that the working gap between the two parts of the rolling unit 4 can accommodate the steel plate to be processed. After the driving device 2 is started, the transmission unit 3 rotates with the start of the driving device 2. The rolling unit 4 continuously rolls the surface of the steel plate to be processed into a flat steel 8 with a concave-convex structure as Figure 1 shown. Then, the processed flat steel 8 is cut to obtain the tube clamp. After adjusting each component to the working state once and starting the driving device 2, a steel plate with a long length and grooves can be continuously processed.

[0043] The transmission unit 3 includes a speed reducer 31, a driving gear 32, a driven gear 33, a first rotating shaft 34 and a second rotating shaft 35. The input end of the speed reducer 31 is fixedly connected to the driving device 2, and the output end of the speed reducer 31 is fixedly connected to a first rotating shaft 34. A driving gear 32 is sleeved outside the first rotating shaft 34. The driving gear 32 meshes with a driven gear 33, and a second rotating shaft 35 is inserted into the driven gear 33. The speed reducer 31 can be selected as a cycloidal pinwheel speed reducer 31, which functions to adjust the rotation speed of the output shaft of the driving device 2 and further adjust the rotation speeds transmitted to the first rotating shaft 34 and the second rotating shaft 35. The driving gear 32 and the driven gear 33 are accommodated in a gear box 36. The gear box 36 is fixed to the bed body 1. The driving gear 32 and the driven gear 33 are arranged longitudinally. Among them, the output shafts of the main gear box 36 are respectively the first rotating shaft 34 and the second rotating shaft 35. The first rotating shaft 34 and the second rotating shaft 35 are connected to a third rotating shaft 512 in the fixed head 51 and a fourth rotating shaft 522 in the movable head 52 of the adjusting unit 5 through a first universal coupling 53 and a second universal coupling 54. The first rotating shaft 34 and the second rotating shaft 35 drive the third rotating shaft 512 and the fourth rotating shaft 522 to rotate towards each other, providing power for rolling. The way of gear meshing is selected to provide relatively stable output power.

[0044] The adjusting unit 5 includes a fixed head 51, a movable head 52, a first universal coupling 53, a second universal coupling 54 and a pressing assembly 55. The fixed head 51 is fixedly connected to the bed body 1. The movable head 52 is slidably arranged on the bed body 1. The height of the movable head 52 is higher than that of the fixed head 51. The pressing assembly 55 is fixed to the bed body 1 and the pressing assembly 55 is fixedly connected to the movable head 52. A first universal coupling 53 is fixedly connected between the fixed head 51 and the first rotating shaft 34. A second universal coupling 54 is fixedly connected between the movable head 52 and the second rotating shaft 35. The fixed head 51 includes a fixed box body 511 and a third rotating shaft 512. The fixed box body 511 is fixedly connected to the bed body 1. The third rotating shaft 512 is rotatably arranged on the fixed box body 511. The movable head 52 includes a movable box body 521 and a fourth rotating shaft 522. The movable box body 521 is slidably arranged on the bed body 1. The fourth rotating shaft 522 is rotatably arranged on the movable box body 521. The third rotating shaft 512 is fixedly connected to the first universal coupling 53, and the fourth rotating shaft 522 is fixedly connected to the second universal coupling 54.

[0045] Specifically, a vertical seat 11 protrudes from the bed body 1. A fixed box body 511 is fixedly installed at the inner bottom of the vertical seat 11, and a third rotating shaft 512 passes through the fixed box body 511. Slide rails 12 are also fixed on both sides of the vertical seat 11. At the same time, a movable box body 521 passes through the upper part of the vertical seat 11, and a fourth rotating shaft 522 is rotatably arranged in the movable box body 521. The movable machine head 52 can longitudinally move along the vertical seat 11 under the action of the pressurizing assembly 55. The pressurizing assembly 55 presses the movable machine head 52 downward. While the movable machine head 52 moves along the vertical seat 11, the working gap between the two parts of the rolling unit 4 is changed. The first universal coupling 53 is used to connect the third rotating shaft 512 and the first rotating shaft 34, playing a connecting role for the third rotating shaft 512 and the first rotating shaft 34. At the same time, since the first universal coupling 53 can realize multi-angle automatic adjustment, after adjusting the distance between the movable machine head 52 and the fixed machine head 51, the first universal coupling 53 can automatically adapt to the changes brought by the height difference between the first rotating shaft 34 and the third rotating shaft 512 due to this distance change. The second universal coupling 54 is used to connect the fourth rotating shaft 522 and the second rotating shaft 35. When the pressurizing assembly 55 pushes the movable machine head 52 towards the fixed machine head 51, the fourth rotating shaft 522 and the second rotating shaft 35 are not on the same straight line. The second universal coupling 54 connects the two together, so that the normal operation of the rolling mill will not be affected by the height change of the movable machine head 52 within a certain range.

[0046] The pressurizing assembly 55 includes a pressurizing device 551 and a fixing member 552. The pressurizing device 551 is fixed to the bed body 1, and the telescopic end of the pressurizing device 551 is fixed to the movable machine head 52. The pressurizing device 551 and the bed body 1 are fixedly connected through the fixing member 552. The pressurizing device 551 can be selected as an oil cylinder or a cylinder. The cylinder barrel end of the pressurizing device 551 is fixed to the top of the vertical seat of the bed body 1. The telescopic end of the pressurizing device 551 extends into the vertical seat and is fixedly connected with the movable box body 521. After the pressurizing device 551 is started, it can drive the movable machine head 52 to move in the vertical seat 11 along the slide rail 12. The fixing member 552 can be selected as a fixing bolt, and multiple groups can be set as needed. The pressurizing assembly 55 further includes a guide rod 553. The guide rod 553 passes through the bed body 1 and abuts against the movable box body 521. Multiple guide rods 553 can be provided. During the movement of the pressurizing device 551, the guide rods 553 are distributed around the telescopic rod of the pressurizing device 551, playing a guiding role during the movement of the movable machine head 52, making the movement stable and the movable machine head 52 not prone to skew.

[0047] Such as Figure 5As shown, the rolling unit 4 includes a convex rolling roll 41 and a concave rolling roll 42. The convex rolling roll 41 is fixedly connected to the fourth rotating shaft 522, and the concave rolling roll 42 is fixedly connected to the third rotating shaft 512. The convex rolling roll 41 and the concave rolling roll 42 cooperate with each other to roll the steel plate. The plate to be processed is pre-placed in the working gap formed by the convex rolling roll 41 and the concave rolling roll 42. The movable head 52 drives it to move in the vertical direction, adjusts the size of the working gap until the convex rolling roll 41 and the concave rolling roll 42 mesh with each other. During the continuous relative movement of the convex rolling roll 41 and the concave rolling roll 42, feeding of the plate is realized. The feeding length is not limited. The length of one rotation of the convex rolling roll 41 is exactly equal to the length of a pipe clamp, and one rotation of the convex pressing roll 41 realizes the processing of one pipe clamp.

[0048] On the outer surface of the convex rolling roll 41, first rolling protrusions 411 are distributed along its radial direction. On the outer surface of the convex rolling roll 41, second rolling protrusions 412 are also distributed. The first rolling protrusions 411 and the second rolling protrusions 412 are perpendicular to each other. On the outer surface of the concave rolling roll 42, first rolling grooves 421 adapted to the first rolling protrusions 411 and second rolling grooves 422 adapted to the second rolling protrusions 412 are provided. When the convex rolling roll 41 and the concave rolling roll 42 rotate continuously, the cooperation between the first rolling protrusions 411 and the first rolling grooves 421 makes the grooves arranged transversely with uniformly distributed intervals on the plate to be processed, and these grooves serve as the mechanism for clamping the pipe fittings in the pipe clamp. At the same time, the cooperation between the second rolling protrusions 412 and the second rolling grooves 422 makes the integral grooves distributed longitudinally on the plate to be processed, and these grooves serve as the grooves made to adapt to the expansion of the pipe fittings when the pipe clamp clamps the pipe fittings. Two formations can be realized simultaneously in one rolling process, saving processes. At the same time, since both the first rolling protrusions 411 and the second rolling protrusions 412 are pre-formed, the shape and structure processed on the plate will not change, and the single structure of each pipe clamp formed by rolling has high similarity and small error.

[0049] As Figure 2As shown, the rolling unit 4 further includes an upper fixed disk 43 and a lower fixed disk 44. The upper fixed disk 43 is fixedly connected to the convex rolling roll 41, and the lower fixed disk 44 is fixedly connected to the concave rolling roll 42. The upper fixed disk 43 and the lower fixed disk 44 can be selected as flanges. The upper fixed disk 43 is sleeved on the fourth rotating shaft 522 and fixedly connected to the convex rolling roll 41 through an adjusting bolt 45. The lower fixed disk 44 is sleeved on the third rotating shaft 512 and fixedly connected to the concave rolling roll 42 through the adjusting bolt 45. The upper fixed disk 43 and the lower fixed disk 44 respectively play the role of fixing the convex rolling roll 41 and the concave rolling roll 42. By changing the length of the adjusting bolt 45 screwed in, the end faces of the convex rolling roll 41 and the concave rolling roll 42 are stabilized on the same plane, so that the rolling part meshes stably. At the same time, when using this solution to replace the convex rolling roll 41 and the concave rolling roll 42 with different diameters when processing pipe clamps of different specifications, the upper fixed disk 43 and the lower fixed disk 44 can be removed only by adjusting the bolt 45, and then the convex rolling roll 41 and the concave rolling roll 42 can be replaced, which is convenient for disassembly.

[0050] Embodiment 2:

[0051] Compared with Embodiment 1, this embodiment further includes a roll pitch adjusting unit 66, as Figure 6 and Figure 7As shown in the figure, a roll distance adjusting unit 6 is fixed between the fixed headstock and the bed body. The roll distance adjusting unit 6 includes a base 61, an adjusting screw 62, a first adjusting block 63, a second adjusting block 64, a support seat 65 and a locking member. A support seat 65 is inserted on the base 61. The support seat 65 is fixedly connected to a first adjusting block 63. The first adjusting block 63 is adapted to the second adjusting block 64. The two sides of the adjusting screw 62 have threads with opposite directions. The two ends of the adjusting screw 62 are threadedly connected with locking members. The locking member 66 abuts against the side wall of the base 61. The adjusting screw 62 sequentially passes through the base 61, the support seat 65, the first adjusting block 63 and the second adjusting block 64. The side wall of the first adjusting block 63 has a first toothed structure 67. A second adjusting block 64 is arranged beside the first adjusting block 63. The second adjusting block 64 has a second toothed structure 68. The first toothed structure 67 is adapted to the second toothed structure 68. When the specification of the pipe clamp to be processed changes and the convex rolling roll 41 and the concave rolling roll 42 with different diameters are replaced, in order to ensure that the center distance between the replaced convex rolling roll 41 and the concave rolling roll 42 is adapted to the replaced convex rolling roll 41 and concave rolling roll 42, it can be achieved by adjusting the height of the fixed headstock 51 through the roll distance adjusting unit 66. Specifically, when adjusting the roll distance, first separate the first adjusting block 63 and the second adjusting block 64 by rotating the adjusting screw 62. Under the action of an external force, raise or lower the support seat 65 and the first adjusting block 63 simultaneously. After adjusting to the preset position, adjust the adjusting screw 62 to gradually reduce the distance between the first adjusting block 63 and the second adjusting block 64 until the first toothed structure 67 is adapted to the second toothed structure 68. The setting of the toothed structure can increase the friction force between the first adjusting block 63 and the second adjusting block 64. The meshing of the first toothed structure 67 and the second toothed structure 68 can bear the vertical load of the fixed headstock 51 without slipping. Compared with the prior art, taking one of the rolls of the roll pair as the reference roll and moving the other roll for comparison, the operation required for adjusting the distance in this way is relatively simple.

[0052] Embodiment 3:

[0053] Compared with Embodiment 1 and Embodiment 2, this embodiment further includes a feeding unit 9 and a discharging unit 7. Specifically, as Figures 8 - 11As shown, the feeding unit 9 includes a first mounting seat 91, a feeding seat 92, a second mounting seat 93 and a feeding roller 94. The first mounting seat 91 is fixedly mounted on the upper part of the bed 1, the feeding seat 92 is fixedly connected to the first mounting seat 91, and the second mounting seat 93 is also fixed on the bed 1. The feeding roller 94 passes through the second mounting seat 93 and is rotatably arranged with the second mounting seat 93. The first mounting seat 91 and the second mounting seat 93 are arranged in parallel, and the feeding seat 92 and the feeding roller 94 form a feeding channel. The feeding roller 94 and the feeding seat 92 jointly feed the plate flat steel 8 to be processed. A guide structure 10 is slidably arranged on the feeding seat 92, and the guide structure 10 includes a guide seat 101 and a guide wheel 102. A slide groove is opened on the side wall of the feeding seat 92, and the guide seat 101 passes through the slide groove and can move along the slide groove. The locking bolt passes through the guide seat 101 and the slide groove to fix the guide seat 101 and the feeding seat 92 together. There are two symmetrical guide seats 101, and guide wheels 102 are rotatably arranged on the guide seats 101. The channel formed between the two guide wheels 102 is used to convey the flat steel 8. The flat steel 8 to be processed is fed through the cooperation of the first feeding mounting seat 91, the feeding seat 92, the second mounting seat 93 and the feeding roller 94, wherein the first mounting seat 91 is used to provide mounting support for the feeding seat 92, and the feeding seat 92 is used to guide the flat steel 8 to be processed. If the specifications of the flat steel 8 to be processed are changed, the position of the guide seat 101 on the feeding seat 92 can be changed, and the two guide wheels 102 play a limiting role in the feeding process of the flat steel 8.

[0054] A driving pulley 95 is fixed on the third rotating shaft 512, and a driven pulley 96 is fixed on the end of the feeding roller 94. The driving pulley 95 and the driven pulley 96 are connected by a transmission belt 97. During installation, the driving pulley 95 is first installed on the third rotating shaft 512, and then the concave rolling roller 42 is installed, which does not affect the installation and removal of the concave rolling roller 42. The feeding roller 94 is driven by the third rotating shaft 512 to realize rotation, thereby realizing feeding. In this embodiment, only one driving device is provided, and the rolling operation and the feeding operation are realized at the same time, ensuring that the rolling speed is the same as the feeding rate, avoiding the phenomenon of errors in the processing and forming of the flat steel 8 caused by the inconsistency between the feeding rate and the rolling processing rate.

[0055] like Figure 10 and Figure 11As shown in the figure, on the side wall of the convex rolling roll 41, a first arrangement area 413 and a second arrangement area 414 are distributed along the circumference. A plurality of first rolling protrusions 411 and first rolling protrusions 412 are evenly distributed in the first arrangement area 413. Only the first rolling protrusion 412 is provided in the second distribution area. The length of one rotation of the first rolling protrusion 411 of the convex rolling roll 41 and the concave rolling roll 42 is exactly equal to the length of a pipe clamp. The first rolling protrusion 411 is used for processing the clamping part, the first rolling protrusion 412 is used for processing the expansion groove, and the part without the first rolling protrusion 411 in the second arrangement area 414 is used for processing the fixing part. Only the first arrangement area 413 on the convex rolling roll 41 has the first rolling protrusion 411 while the second arrangement area 414 does not have the first rolling protrusion 411, which is convenient for processing the pipe clamp in one rolling process. Specifically, an infrared emitter is installed inside the convex rolling roll 41. Positioning holes 415 are opened on the second arrangement area 414 of the convex rolling roll 41. The positioning holes 415 are distributed on both sides of the first rolling protrusion 412. There are two positioning holes 415, and the infrared rays emitted by the infrared emitter can extend outward along the positioning holes 415. The position of the positioning holes 415 is set at the central position of the second arrangement area 414. As Figure 11 shown, mark the second arrangement area 414 as the minor arc between A and B. The midpoint of the line AB is at C, and the positioning holes 415 are arranged at the position C. Before the rolling operation, the flat steel 8 is sent into the space above the concave rolling roll 42 by the feeding unit 9. The infrared emitter emits infrared rays towards the flat steel 8. The infrared rays emitted from the two positioning holes 415 form a positioning trajectory. When the flat steel 8 is pre-positioned, the end of the flat steel 8 is positioned along the infrared ray trajectory emitted from the positioning holes 415. By positioning in this way, it is ensured that when processing the flat steel 8 with a relatively large length, its starting part is the fixing part of the pipe clamp, avoiding waste during the processing of the longer flat steel 8. For example, the unit length of the pipe clamp is 20 cm and the length of the flat steel 8 is 1 m. If the starting position is randomly determined during the first rolling, there will inevitably be a part of wasted material in the starting processing part of the flat steel 8, which will affect the processing efficiency and cost. By adopting the method of determining the starting position in this embodiment, this kind of waste can be avoided and the error value between each pipe clamp can be reduced.

[0056] As Figure 8 and Figure 12As shown in the figure, it further includes a discharging unit 7. The discharging unit 7 includes a discharging cylinder 71, a connecting rod 72, a movable sleeve 73, a connecting shaft 74, a discharging groove 75 and a blanking box. One end of the discharging cylinder 71 is fixedly connected to the bed body 1, the other end of the discharging cylinder 71 is rotatably connected to a connecting rod 72, the connecting rod 72 is fixedly connected with a movable sleeve 73, the movable sleeve 73 is sleeved on the connecting shaft 74 and can rotate along the connecting shaft 74. A baffle plate 76 is fixedly connected to the movable sleeve 73. The bed body 1 is fixed with a discharging groove 75 and a blanking box. The discharging groove 75 is in contact with the baffle plate 76, and a blanking box is fixed below the discharging groove 75. The connecting shaft 74 is fixed to the bed body 1 through a support seat. The connecting shaft 74 is fixedly connected with the support seat, and the movable sleeve 73 can rotate along the connecting shaft 74. During discharging, automatic blanking is required and then it is further transported to the next process for cutting to obtain pipe clamps.

[0057] Specifically, the processed flat steel 8 enters the discharging groove 75 along its movement track. A sensor 77 is installed between the discharging cylinder 71 and the rolling unit 4. The sensor 77 is used to sense whether there is a formed plate in its path. Once the signal of the formed plate is not detected, it means that all the plates of this piece have been processed. At this time, the discharging cylinder 71 is started. The discharging cylinder 71 drives the connecting rod 72 to rotate. The movable sleeve 73 fixed to the connecting rod 72 rotates along the connecting rod 72. At the same time, the baffle plate 76 fixed to the movable sleeve 73 also rotates. The formed plates in the receiving groove fall into the blanking box for storage under the action of gravity along the baffle plate 76. Among them, the discharging groove 75 is fixedly connected to the bed body, and there is a blanking channel between the discharging groove 75 and the blanking box.

[0058] Embodiment 4:

[0059] Different from Embodiment 2, the structure of the roll pitch adjusting unit 6 in this embodiment is different. For example Figure 13As shown, a roll distance adjustment unit 6 is fixed between the fixed machine head and the bed body. The roll distance adjustment unit 6 includes a base 61, an adjustment screw 62, a first adjustment block 63, a second adjustment block 64, a support seat 65 and a locking member. The support seat 65 is inserted on the base 61. The support seat 65 is fixedly connected to the first adjustment block 63. The first adjustment block 63 is adapted to the second adjustment block 64. The two sides of the adjustment screw 62 have threads with opposite directions. The adjustment screw 62 sequentially passes through the base 61 and the second adjustment block 64. The two ends of the adjustment screw 62 are threadedly connected with locking members. The locking member 66 abuts against the side wall of the base 61. The cross section of the first adjustment block 63 is an isosceles trapezoid. Another first adjustment block 63 is also fixed on the base 61. The second adjustment blocks 64 are arranged on both sides of the bottom of the first adjustment block 63. The first adjustment block 63 is in contact with the second adjustment block 64. The two first adjustment blocks 63 clamp the second adjustment block 64. And T-shaped sliders 69 are fixed on both sides of the first adjustment block 63. Sliding grooves 610 are arranged on both sides of the second adjustment block 64 to enable the T-shaped sliders 69 to slide therein. When the specifications of the pipe clamps to be processed change and different-diameter convex rolling rolls 41 and concave rolling rolls 42 are replaced, to ensure that the center distance between the replaced convex rolling roll 41 and the concave rolling roll 42 is adapted to the replaced convex rolling roll 41 and concave rolling roll 42, the height of the fixed machine head 51 can be adjusted through the roll distance adjustment unit 66. Specifically, when adjusting the roll distance, loosen the locking member 66 and rotate the adjustment screw 62 to make the two second adjustment blocks 64 move towards each other or in opposite directions. If the two first adjustment blocks 63 move towards each other, the height of the first adjustment block 63 increases, and the height of the fixed machine head also increases accordingly. If the two first adjustment blocks 63 move in opposite directions, the height of the first adjustment block 63 decreases, and the height of the fixed machine head also decreases accordingly. When the relative position relationship between the first adjustment block 63 and the second adjustment block 64 changes, the T-shaped sliders 69 move along the sliding grooves 610 to prevent the first adjustment block 63 from disengaging from the second adjustment block 64. The size of the sliding groove is larger than that of the T-shaped slider 68. A buffer member is arranged between the sliding groove 610 and the T-shaped slider 69 to adapt to the displacement between the two.

[0060] Working principle:

[0061] The movable machine head 52 is in the two vertical seats 11 of the bed body 1 and can move up and down under the push of the pressurizing device 551. The speed reducer 31 driven by the driving device 2 is connected to the gear box 36. The first rotating shaft 34 and the second rotating shaft 35 are connected to the third main shafts of the fixed machine head 51 and the movable machine head 52 through the first universal coupling 53 and the second universal coupling 54. Driving the third main shafts of the two machine heads to rotate towards each other. Convex rolling rolls 41 and concave rolling rolls 42 are installed at the two ends of the two third rotating shafts 522. The flat steel 8 used for the boiler pipe clamps is rolled into a shape with longitudinal and transverse grooves between the rolling rolls.

[0062] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that those skilled in the art of this technology may make to some parts thereof all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. Boiler tube clip rolling mill, characterized in that, It includes a bed body (1), a driving device (2), a transmission unit (3), a rolling unit (4), and an adjusting unit (5). The driving device (2) is fixedly connected to the transmission unit (3). The transmission unit (3) is fixedly connected to the adjusting unit (5). A rolling unit (4) is rotatably arranged on the adjusting unit (5). The rolling unit (4) consists of two parts, and there is a working gap between the two parts. The adjusting unit (5) is used to adjust the working gap between the two parts of the rolling unit (4). The adjusting unit (5) includes a fixed headstock (51), a movable headstock (52), a first universal coupling (53), a second universal coupling (54), and a pressurizing component (55). The fixed headstock (51) is fixedly connected to the bed body (1). The movable headstock (52) is slidably arranged on the bed body (1). The height of the movable headstock (52) is higher than that of the fixed headstock (51). The pressurizing component (55) is fixed to the bed body (1) and is fixedly connected to the movable headstock (52). A first universal coupling (53) is fixedly connected between the fixed headstock (51) and a first rotating shaft (34). A second universal coupling (54) is fixedly connected between the movable headstock (52) and a second rotating shaft (35). The rolling unit (4) includes a convex rolling roll (41) and a concave rolling roll (42). The convex rolling roll (41) is fixedly connected to a fourth rotating shaft (522). The concave rolling roll (42) is fixedly connected to a third rotating shaft (512). On the outer surface of the convex rolling roll (41), first rolling protrusions (411) are distributed along its radial direction. Second rolling protrusions (412) are also distributed on the outer surface of the convex rolling roll (41). The first rolling protrusions (411) and the second rolling protrusions (412) are perpendicular to each other and are arranged in an alternating manner. On the outer surface of the concave rolling roll (42), there are first rolling grooves (421) adapted to the first rolling protrusions (411) and second rolling grooves (422) adapted to the second rolling protrusions (412).

2. The boiler tube clamp rolling mill according to claim 1, wherein The transmission unit (3) includes a speed reducer (31), a driving gear (32), a driven gear (33), a first rotating shaft (34), and a second rotating shaft (35). The input end of the speed reducer (31) is fixedly connected to the driving device (2). The output end of the speed reducer (31) is fixedly connected to a first rotating shaft (34). A driving gear (32) is sleeved on the first rotating shaft (34). The driving gear (32) meshes with a driven gear (33). A second rotating shaft (35) passes through the driven gear (33).

3. The boiler tube clamp rolling mill according to claim 1, characterized in that, The fixed headstock (51) includes a fixed box body (511) and a third rotating shaft (512). The fixed box body (511) is fixedly connected to the bed body (1). A third rotating shaft (512) is rotatably arranged on the fixed box body (511). The movable headstock (52) includes a movable box body (521) and a fourth rotating shaft (522). The movable box body (521) is slidably arranged on the bed body (1). A fourth rotating shaft (522) is rotatably arranged on the movable box body (521).

4. The boiler tube clip rolling mill according to claim 1, characterized in that, The pressing assembly (55) includes a pressing device (551) and a fixing member (552). The pressing device (551) is fixed to the bed body (1). The telescopic end of the pressing device (551) is fixed to the movable headstock (52). The pressing device (551) and the bed body (1) are fixedly connected through the fixing member (552).

5. The boiler tube clip rolling mill according to claim 4, wherein, The pressing assembly (55) further includes a guide rod (553). The guide rod (553) passes through the bed body (1) and abuts against the movable box body (521) of the fixed headstock (51).

6. The boiler tube clamp rolling mill according to claim 1, characterized in that, The rolling unit (4) further includes an upper fixed disk (43) and a lower fixed disk (44). The upper fixed disk (43) is fixedly connected to the convex rolling roll (41). The lower fixed disk (44) is fixedly connected to the concave rolling roll (42).

7. The boiler tube clip rolling mill according to claim 1, characterized in that, A roll pitch adjusting unit (6) is fixed between the fixed headstock (51) and the bed body (1). The roll pitch adjusting unit (6) includes a base (61), an adjusting screw (62), a first adjusting block (63), a second adjusting block (64), a support seat (65) and a locking member (66). A support seat (65) is inserted into the base (61). The support seat (65) is fixedly connected to a first adjusting block (63). The first adjusting block (63) is adapted to the second adjusting block (64). The adjusting screw (62) sequentially passes through the base (61) and the second adjusting block (64). Threads with opposite directions are provided on both sides of the adjusting screw (62). Locking members (66) are threadedly connected to both ends of the adjusting screw (62). The locking members (66) abut against the side wall of the base (61).

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