Large rotary kiln barrel sectional type machining and assembling device

Abstract

The utility model discloses a large rotary kiln cylinder sectional type processing and assembling device which divides a rotary kiln cylinder into a first cylinder and a second cylinder, supporting assemblies are detachably arranged at the positions, close to the inner portions of the ends, of the two ends of the sectional cylinder, center shafts of the two supporting assemblies are connected with a driving mechanism through bearings, and the driving mechanism drives the sectional cylinder to rotate. A butt-joint assembly is fixedly arranged on the inner wall circumference of the end of the butt-joint position of the two sections of segmented barrel bodies in the circumferential direction, and the first barrel body and the second barrel body are assembled in a butt-joint mode through the butt-joint assembly and welded into the whole rotary kiln barrel body. The device is scientific and reasonable in design, the large rotary kiln barrel is machined in a segmented mode, and multi-directional flexible machining is provided for the large rotary kiln barrel; and meanwhile, the concave flange and the convex flange which are matched with each other are arranged on the inner walls of the butt joint ends of the segmented barrel bodies, so that the centering butt joint positioning accuracy during assembly of the segmented barrel bodies is improved, the overall assembly production efficiency of the large rotary kiln body is improved, and normal and safe operation of the rotary kiln is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of rotary kiln technology, specifically relating to a segmented processing and assembly device for a large rotary kiln cylinder. Background Technology

[0002] With technological advancements, the structural dimensions of rotary equipment used in chemical, metallurgical, cement, mining, and power industries are becoming increasingly larger. For example, rotary kilns, low-speed, heavy-duty rotary thermal equipment, can have a cylinder diameter of up to 4000mm and a length exceeding 16000mm. For such large rotary equipment, the rotation center must be concentric, and the coaxiality of the machined surfaces of the outer circumferential pads of the kiln cylinder must be less than 0.5mm. This cannot be achieved by sheet metal welding alone; large horizontal lathes are required for machining. Currently, the processing capabilities of large horizontal lathes are limited and cannot meet the requirements for large rotary kiln cylinders. Furthermore, from a processing perspective, the extra-long cylinder and its heavy weight cause deflection during machining, making it impossible to guarantee the coaxiality of the pads on both sides of the cylinder, thus failing to meet the overall machining requirements for such extra-large and heavy rotary kiln cylinders.

[0003] For extra-large rotary kiln shells that exceed the machining range of lathes, they need to be manufactured in sections. The required machining surfaces on the rotary kiln shell can also only be machined in sections, and then the sections are assembled and welded into a whole. The motion and stress conditions of the rotary kiln during operation are very complex, and the stress conditions also change greatly under cold and hot conditions. How to ensure the overall coaxiality of the rotary kiln shell after the sections are assembled and welded? If the accuracy cannot meet the requirements, it will affect the overall performance of the rotary kiln.

[0004] In addition, during the machining of each section of the rotary kiln shell, the shell structure needs to be fixed and rotated, which places extremely high demands on the stability of the fixing device. There may be situations where the clamping force is too large, causing deformation of the shell structure, or the clamping force is too small, failing to fix it effectively. Furthermore, maintaining the stability of the shell structure during rotation and choosing the right fixing device to support the shell for machining the rotary kiln shell are also urgent problems to be solved. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a segmented processing and assembly device for large rotary kiln shells. The device segments the large rotary kiln shell, with support components fixed to the inner walls of both ends of each segment. These support components are connected to a rotation drive, causing the segmented shells to rotate, providing flexible processing from multiple angles. Simultaneously, matching concave-convex mating components are fixed to the inner walls of the mating ends of each segment. The mating surfaces of these components are processed synchronously with the circumferential pads of the segmented shells, ensuring the perpendicularity and processing accuracy of the mating surfaces. This improves the precision of the mating positions during segmented shell assembly and solves the processing challenges of large rotary kiln shells.

[0006] The technical solution adopted by this utility model is: a segmented processing and assembly device for a large rotary kiln cylinder, which divides the rotary kiln cylinder into two segments, cylinder one and cylinder two. Pads are fixedly arranged in a ring array along the left side of cylinder one and the right side of cylinder two. Support components are detachably installed inside the two ends of the segmented cylinder near the ends. The central shaft of the middle part of the two sets of support components is connected to the drive mechanism through bearings. The drive mechanism drives the segmented cylinder to rotate. A docking component is fixedly installed circumferentially on the inner wall of the joint end of the two segmented cylinders. Cylinder one and cylinder two are assembled and welded into a whole rotary kiln cylinder through the docking component.

[0007] The support assembly includes a transition plate and a central shaft. The bottom surface of the transition plate is a circular base plate, with a reinforcing ring plate and stiffeners fixedly installed at the bottom. A hollow central shaft is located at the upper center of the base plate, with bolt holes around its bottom edge. The central shaft is fixedly mounted on the base plate by bolts. Connecting components are evenly distributed circumferentially near the outer periphery of the base plate, radiating outwards from the transition plate. The center lines of the connecting components pass through the center point of the transition plate. Adjusting components are located on the connecting components away from the center of the base plate, with an inner support component fixedly connected to the upper part of the adjusting component.

[0008] The bottom of the connecting component is a rectangular fixed base plate. The connecting component is fixed to the base plate of the transition plate with bolts through the bolt holes at the four corners of the fixed base plate. A vertical plate is fixedly provided on the front side of the fixed base plate near the center of the base plate. A threaded hole is opened in the middle of the vertical plate. Supporting ribs are fixedly provided on both sides of the threaded hole of the vertical plate and perpendicular to the vertical plate.

[0009] The adjusting component includes an adjusting base plate with symmetrically arranged waist-shaped elongated holes on both sides. A rectangular four-sided adjusting frame is fixed on the adjusting base plate. A threaded hole is provided on the front frame plate of the adjusting frame near the center of the base plate. An adjusting screw is provided between the threaded hole on the vertical plate of the connecting component and the front frame plate of the adjusting frame. An adjusting nut is integrally provided in the middle of the adjusting screw. The threaded holes on the vertical plate and the front frame plate are adapted to the position and size of the adjusting screw. Bolt holes are provided on the rear frame plate of the adjusting frame away from the center of the base plate.

[0010] The inner support component includes a support base plate, a support upright plate is vertically fixed on the upper front side of the support base plate, bolt holes are opened on the support upright plate, and inner support plates are fixed on both sides of the support upright plate and perpendicular to the support base plate. The inner support plates are aligned with the length direction of the cylinder, and the bottom side of the support base plate is provided with reinforcing ribs. The top of the inner support component is in contact with the inner wall of the cylinder, and the support base plate and the inner support plate have an arc that matches the inner wall of the cylinder on the side close to the inner wall of the cylinder.

[0011] The adjusting component is bolted to the fixed base plate of the connecting component through the waist-shaped elongated holes on both sides of its lower part, and the adjusting component is bolted to the support base plate of the inner support component through the waist-shaped elongated holes on both sides of its upper part. The support upright plate of the inner support component and the rear frame plate of the adjusting component are fixedly connected by fastening bolts.

[0012] A convex flange is fixedly provided around the inner wall of the right end face of the cylinder. The outer circumference of the convex flange has an outwardly protruding circular boss. The boss surface of the circular boss is flush with the right end face of the cylinder wall. A recessed stop is provided on the inner side of the convex flange near the circular boss. Bolt holes are evenly distributed along the circumference of the recessed stop.

[0013] A concave flange is fixedly provided on the inner wall of the left end face of the two cylinders. The outer circumference of the concave flange has a circular groove. The groove surface of the circular groove is flush with the left end face of the cylinder wall of the two cylinders. A convex stop is provided on the inner side of the concave flange near the circular groove. Bolt holes are evenly distributed along the circumference of the convex stop.

[0014] The docking assembly is a combination structure of concave flange and convex flange. The structural dimensions of the circular boss and the circular groove are compatible. The cylinder body one and cylinder body two are fixedly assembled by connecting bolts through the bolt holes of the concave and convex flanges.

[0015] The height of the convex stop is greater than the height of the concave stop. When cylinder one and cylinder two are assembled together, the concave stop of cylinder one contacts the convex stop of cylinder two. There is a gap between the boss surface of cylinder one and the groove surface of cylinder two, that is, there is a joint between the cylinder walls of cylinder one and cylinder two.

[0016] The cylinder walls of cylinder one and cylinder two are respectively provided with bevels to facilitate the welding of cylinder one and cylinder two together; the non-connecting side of the concave flange and the convex flange are respectively provided with right-angled triangular reinforcing ribs at intervals with the inner wall of the segmented cylinder.

[0017] The docking assembly is a combination of concave and convex flanges. The circular boss and circular groove are sized to match. Cylinder body one and cylinder body two are bolted together using the bolt holes of the concave and convex flanges. This arrangement aims to provide matching concave and convex flange docking assembly structures on the docking surfaces of cylinder body one and cylinder body two, respectively. The docking surfaces of the assembly are machined synchronously with the machined surfaces of the circumferential pads of the cylinder body segments, ensuring the perpendicularity and machining accuracy of the docking surfaces. When cylinder body one and cylinder body two are assembled... Easy to align; the concave-convex flange has a simple structure, is easy to process, and has small errors. The mating surfaces of the concave-convex flange can fit tightly. This concave-convex flange combination structure has good alignment and accurate positioning when assembling and installing rotary kiln segmented cylinders. The coaxiality of the segmented cylinders is ensured by the processing precision, which facilitates the assembly of the segmented cylinders, improves the accuracy of the docking position during the assembly of the segmented cylinders, ensures the normal and safe operation of the rotary kiln, improves the overall assembly production efficiency of the rotary kiln body, and solves the processing problem of large rotary kiln cylinders.

[0018] In addition, the installation of concave and convex flanges within the segmented cylinder body, along with the strong deformation resistance of the frustum-shaped convex structure of the flanges, results in less welding deformation during the assembly and welding of the segmented cylinder body. This also minimizes deformation caused by environmental conditions during the overall use of the rotary kiln. Furthermore, it improves the accuracy of centering and positioning during the assembly and welding of the segmented cylinder body, meeting the requirements of the kiln body processing technology, enhancing the overall performance and service life of the rotary kiln, and increasing production efficiency.

[0019] The height of the convex stop is greater than the height of the concave stop. When cylinder one and cylinder two are assembled together, the concave stop of cylinder one contacts the convex stop of cylinder two, and a gap is left between the boss surface of cylinder one and the groove surface of cylinder two, that is, a butt joint is provided between the cylinder walls of cylinder one and cylinder two; a bevel is opened at the joint of the cylinder walls of cylinder one and cylinder two respectively. The purpose of this setting is that the height of the convex stop of the concave flange of cylinder two is greater than the height of the concave stop of the convex flange of cylinder one. For example, if the height difference is 4mm, after the concave flange of cylinder two and the convex flange of cylinder one are installed by bolt assembly, the 4mm butt joint gap between the cylinder walls of cylinder one and cylinder two is precisely controlled, and a certain angle bevel is provided on the cylinder wall to the outside, which facilitates the precise assembly and welding of the segmented cylinders, and improves the assembly efficiency and accuracy of welding of large cylinder assemblies.

[0020] The inner walls near the ends of the segmented kiln body are equipped with support components. The adjusting component is bolted to the fixed base plate of the connecting component through the oblong holes on its lower sides, and bolted to the support base plate of the inner support component through the oblong holes on its upper sides. This arrangement aims to process the large rotary kiln body in segments, with support components fixed to the inner walls of each segment. These support components are connected to a rotary drive, causing the segmented kiln body to rotate, providing flexible processing in multiple directions. The adjusting component is bolted to the connecting component of the transition plate and the inner support component through oblong holes. Depending on the diameter of the processed kiln body, the relative position of the inner support component is adjusted by rotating the adjusting screw and adjusting nut of the adjusting component, ensuring that the top of the support component makes arc-shaped contact with the inner wall of the kiln body. This flexible and convenient arrangement meets the adjustment requirements for clamping and fixing the inner supports at both ends of the segmented kiln body. During the rotational processing of the large kiln structure, it also provides support, preventing deformation and improving processing accuracy.

[0021] The beneficial effects of this utility model are as follows: The device is scientifically and rationally designed with a simple structure. It processes the large rotary kiln shell into sections, with support components fixed to the inner walls of each section. These support components are connected to a rotary drive, causing the section to rotate and providing flexible processing for the large rotary kiln shell from multiple directions. Simultaneously, matching concave-convex flange mating components are fixed to the inner walls of the mating ends of the section shells. The mating surfaces of these components are processed synchronously with the circumferential pad surfaces of the section shells. This concave-convex flange combination structure ensures good alignment and accurate positioning during the installation of the rotary kiln sections. Furthermore, the frustum-shaped protrusion of the flanges has strong resistance to deformation, resulting in minimal welding deformation during the assembly and welding of the section shells. This ensures the perpendicularity and processing accuracy of the mating surfaces of the section shells, improves the accuracy of alignment and positioning during assembly, meets the requirements of the kiln body processing technology, increases the overall assembly efficiency of the rotary kiln body, ensures the normal and safe operation of the rotary kiln, and enhances the overall performance and service life of the rotary kiln body. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the segmented cylindrical body with support components and docking components of this utility model;

[0023] Figure 2 This is a schematic diagram of the planar structure of the support component of this utility model;

[0024] Figure 3 This utility model Figure 2 A partially enlarged schematic diagram of the support component at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the segmented cylinder assembly structure of this utility model;

[0026] Figure 5 This utility model Figure 4 A partial cross-sectional view of the docking assembly at point B.

[0027] The diagram shows the following markings: 1. Cylinder body one; 2. Pad plate; 3. Cylinder body two; 4. Support assembly; 5. Butt joint assembly; 6. Raised face flange; 7. Concave face flange; 8. Raised stop; 9. Concave stop; 10. Connecting bolt; 11. Reinforcing rib plate; 12. Transition plate; 13. Base plate; 14. Central shaft; 15. Connecting component; 1501. Fixed base plate; 1502. Vertical plate; 1503. Supporting rib plate; 16. Adjusting component; 1601. Adjusting base plate; 1602. Waist-shaped elongated hole; 1603. Front frame plate; 1604. Rear frame plate; 17. Internal support component; 1701. Support base plate; 1702. Supporting vertical plate; 1703. Internal support plate; 18. Adjusting screw; 19. Adjusting nut; 20. Fastening bolt; 21. Bevel; 22. Butt joint. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0029] like Figure 1-5 As shown, a segmented processing and assembly device for a large rotary kiln cylinder is provided. The rotary kiln cylinder is divided into two segments: cylinder 1 and cylinder 2. Pads 2 are fixedly arranged in a ring array along the left side of cylinder 1 and the right side of cylinder 2. Support components 4 are detachably installed at both ends of the segmented cylinder near the end. The central shaft 14 in the middle of the two sets of support components 4 is connected to the drive mechanism through bearings. The drive mechanism drives the segmented cylinder to rotate. A docking component 5 is fixedly arranged circumferentially on the inner wall of the joint end of the two segmented cylinders. Cylinder 1 and cylinder 2 are assembled and welded into a whole rotary kiln cylinder through the docking component.

[0030] The support assembly 4 includes a transition plate 12 and a central shaft 14. The bottom surface of the transition plate 12 is a circular base plate 13. A reinforcing ring plate and a stiffener plate are fixedly provided at the bottom of the base plate 13. A hollow central shaft 14 is provided at the upper middle position of the base plate. Bolt holes are provided on the bottom circumference of the central shaft 14. The central shaft 14 is fixedly installed on the base plate 13 by bolts. Connecting members 15 are evenly distributed on the base plate 13 near the outer periphery and along the circumference. The connecting members 15 are arranged radially on the transition plate 12, and the number is at least 8. The center line of the connecting members 15 passes through the center point of the transition plate 12. An adjusting member 16 is provided on the connecting member 15 away from the center of the base plate 13. An inner support member 17 is fixedly connected to the upper part of the adjusting member 16.

[0031] The bottom of the connecting member 15 is a rectangular fixed base plate 1501. The connecting member 15 is fixed to the base plate 13 of the transition plate 12 by bolts through the bolt holes at the four corners of the fixed base plate 1501. A vertical plate 1502 is fixedly provided on the front side of the fixed base plate 1501 near the center of the base plate 13. A threaded hole is opened in the middle of the vertical plate 1502. Supporting ribs 1503 are fixedly provided on both sides of the threaded hole of the vertical plate 1502 and perpendicular to the vertical plate 1502.

[0032] The adjusting component 16 includes an adjusting base plate 1601. The adjusting base plate 1601 has symmetrically arranged waist-shaped elongated holes 1602 on both sides. A rectangular four-sided adjusting frame is fixed on the adjusting base plate 1601. A threaded hole is provided on the front frame plate 1603 of the adjusting frame near the center of the base plate 13. An adjusting screw 18 passes through the threaded hole between the upright plate 1502 of the connecting component 15 and the front frame plate 1603 of the adjusting frame. An adjusting nut 19 is integrally provided in the middle of the adjusting screw 18. The threaded holes on the upright plate 1502 and the front frame plate 1603 are adapted to the position and size of the adjusting screw 18. Bolt holes are provided on the rear frame plate 1604 of the adjusting frame away from the center of the base plate 13.

[0033] The inner support component 17 includes a support base plate 1701, a support upright plate 1702 is vertically fixed on the upper front side of the support base plate 1701, bolt holes are opened on the support upright plate 1702, and inner support plates 1703 are fixed on both sides of the support upright plate 1702 and perpendicular to the support base plate 1702. The inner support plates 1703 are aligned with the length direction of the cylinder. The bottom side of the support base plate 1701 is provided with reinforcing ribs. The top of the inner support component 17 is in contact with the inner wall of the cylinder. The side of the support base plate 1701 and the inner support plate 1703 near the inner wall of the cylinder has an arc that matches the inner wall of the cylinder.

[0034] The adjusting component 16 is bolted to the fixed base plate 1501 of the connecting component 15 through the waist-shaped elongated holes 1602 on both sides of its lower part. The adjusting component 16 is bolted to the support base plate 1701 of the inner support component 17 through the waist-shaped elongated holes 1602 on both sides of its upper part. The support upright plate 1702 of the inner support component 17 is fixedly connected to the rear frame plate 1604 of the adjusting component 16 through fastening bolts 20.

[0035] A convex flange 6 is fixedly provided around the inner wall of the right end face of the cylinder 1. The outer circumference of the convex flange 6 has an outwardly protruding circular boss. The boss surface of the circular boss is flush with the right end face of the cylinder wall of the cylinder 1. The inner side of the convex flange 6 near the circular boss is provided with a recessed stop 9. Bolt holes are evenly distributed along the circumference of the recessed stop 9.

[0036] The inner wall of the left end face of the second cylinder 3 is circumferentially fixed with a concave flange 7. The outer circumferential side of the concave flange 7 has a circular groove. The groove surface of the circular groove is flush with the left end face of the second cylinder wall. The inner side of the concave flange 7 near the circular groove has a convex stop 8. Bolt holes are evenly distributed along the circumference of the convex stop 8.

[0037] The docking assembly is a combination structure of concave flange 7 and convex flange 6. The structural dimensions of the circular boss and the circular groove are compatible. The cylinder body 1 and cylinder body 2 3 are fixedly assembled by connecting bolts 10 through the bolt holes of the concave and convex flanges.

[0038] The height of the convex stop 8 is greater than the height of the concave stop 9. When the cylinder body 1 and the cylinder body 2 3 are assembled together, the concave stop 9 of the cylinder body 1 contacts the convex stop 8 of the cylinder body 2 3. There is a gap between the boss surface of the cylinder body 1 and the groove surface of the cylinder body 2 3, that is, there is a 4mm butt joint between the cylinder walls of the cylinder body 1 and the cylinder body 2 3.

[0039] The cylinder walls of cylinder 1 and cylinder 2 are respectively provided with a 20° bevel 21 to facilitate the assembly and welding of cylinder 1 and cylinder 2; the non-connecting side of concave flange 7 and convex flange 6 are respectively provided with right-angled triangular reinforcing ribs 11 at intervals from the inner wall of the segmented cylinder.

[0040] In this embodiment, the rotary kiln cylinder has a diameter of 4.4m and a length of 16.6m. The cylinder is required to be machined into the outer circumference of the pad plate in a single setup, with a coaxiality requirement of 0.5mm and Ra1.6. The cylinder itself weighs 110 tons, and the machining fixture weighs 55 tons, bringing the total weight of the cylinder and fixture to approximately 165 tons. The total length of the cylinder and fixture is approximately 23m. Such an ultra-long and ultra-heavy rotary kiln cylinder cannot be machined as a whole using a large horizontal lathe for the outer circumference of the pad plate 2. Firstly, the machining capabilities of large horizontal lathes are limited and cannot meet the requirements. Secondly, the ultra-long cylinder and its heavy weight will cause deflection deformation during machining, making it impossible to guarantee the coaxiality of the pad plates 2 on both sides, thus failing to meet the overall machining requirements for this extra-large and ultra-heavy rotary kiln cylinder.

[0041] In this case, the cylinder is divided into two sections, cylinder 1 and cylinder 2, which are processed separately. Raised face flanges 6 and concave face flanges 7 are welded to the joints of the two sections. The two ends of the sections to be processed are fixed by the internal clamps of the support assembly 4. The support assembly 4, according to the diameter of the cylinder, rotates the adjusting nut 19, which drives the adjusting screw 18 to rotate, adjusting the inner support plate 1703 and the support base plate 1701 at the top of the inner support component 17 to contact the inner wall of the cylinder, adapting to cylinders of different diameters. During turning, the transverse and longitudinal moving platforms drive the tool holder to move in two degrees of freedom, changing the processing position according to the working conditions. Simultaneously, the rotation drive drives the cylinder to rotate, completing the processing of the outer surface of the cylinder pad 2. Each section of the cylinder is clamped once, and the cylinder pad 2 and the flange end face at the joint are processed separately. The flange at the joint is processed into a raised stop 8 and a concave stop 9, with tolerance fit. After the two sections of the cylinder are processed, they are positioned by the butt joint convex stop 8 and concave stop 9 on the flanges of the two sections of the cylinder. The fit clearance is within 0.3mm. A butt joint of 4mm is provided between the cylinder walls of cylinder 1 and cylinder 2. A 20° bevel 21 is opened at the cylinder butt joint. After the two sections of the cylinder are connected and assembled by bolts, they are welded into a whole rotary kiln cylinder.

[0042] The parts of this invention not described in detail are prior art. Besides the embodiments described above, this utility model may have other implementations, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A segmented processing and assembly device for a large rotary kiln shell, characterized in that: The rotary kiln shell is divided into two sections: Shell 1 and Shell 2. Pads are fixedly arranged in a ring array along the left side of Shell 1 and the right side of Shell 2. Support components are detachably installed inside the two ends of the section shell near the ends. The central shaft of the middle part of the two sets of support components is connected to the drive mechanism through bearings. The drive mechanism drives the section shell to rotate. A docking component is fixedly installed circumferentially on the inner wall of the joint end of the two section shells. Shell 1 and Shell 2 are assembled and welded into a whole rotary kiln shell through the docking component.

2. The segmented processing and assembly device for a large rotary kiln shell according to claim 1, characterized in that: The support assembly includes a transition plate and a central shaft. The bottom surface of the transition plate is a circular base plate. A reinforcing ring plate and a stiffener plate are fixedly installed at the bottom of the base plate. A hollow central shaft is located at the upper center of the base plate. Bolt holes are provided around the bottom edge of the central shaft. The central shaft is fixedly installed on the base plate by bolts. Connecting components are evenly distributed around the outer periphery of the base plate. The connecting components are arranged radially on the transition plate. The center line of the connecting components passes through the center point of the transition plate. An adjusting component is provided on the connecting component away from the center of the base plate. An inner support component is fixedly connected to the upper part of the adjusting component.

3. The segmented processing and assembly device for a large rotary kiln shell according to claim 2, characterized in that: The bottom of the connecting component is a rectangular fixed base plate. The connecting component is fixed to the base plate of the transition plate by bolts through the bolt holes at the four corners of the fixed base plate. A vertical plate is fixed on the front side of the fixed base plate near the center of the base plate. A threaded hole is opened in the middle of the vertical plate. Supporting ribs are fixed on both sides of the threaded hole of the vertical plate and perpendicular to the vertical plate.

4. The segmented processing and assembly device for a large rotary kiln shell according to claim 2, characterized in that: The adjusting component includes an adjusting base plate with symmetrically arranged waist-shaped elongated holes on both sides. A rectangular four-sided adjusting frame is fixed on the adjusting base plate. A threaded hole is opened on the front frame plate of the adjusting frame near the center of the base plate. An adjusting screw is inserted between the threaded hole on the vertical plate of the connecting component and the front frame plate of the adjusting frame. An adjusting nut is integrally provided in the middle of the adjusting screw. The threaded holes on the vertical plate and the front frame plate are adapted to the position and size of the adjusting screw. Bolt holes are provided on the rear frame plate of the adjusting frame away from the center of the base plate.

5. A segmented processing and assembly device for a large rotary kiln shell according to claim 2, characterized in that: The internal support component includes a support base plate, a support upright plate is vertically fixed on the upper front side of the support base plate, bolt holes are opened on the support upright plate, and inner support plates are fixed on both sides of the support upright plate and perpendicular to the support base plate. The inner support plates are aligned with the length direction of the cylinder, and the bottom side of the support base plate is provided with reinforcing ribs. The top of the internal support component is in contact with the inner wall of the cylinder, and the support base plate and the inner support plate have an arc that matches the inner wall of the cylinder on the side close to the inner wall of the cylinder.

6. The segmented processing and assembly device for a large rotary kiln shell according to claim 2, characterized in that: The adjusting component is bolted to the fixed base plate of the connecting component through the waist-shaped elongated holes on both sides of its lower part, and the adjusting component is bolted to the support base plate of the inner support component through the waist-shaped elongated holes on both sides of its upper part. The support upright plate of the inner support component is fixedly connected to the rear frame plate of the adjusting component by fastening bolts.

7. The segmented processing and assembly device for a large rotary kiln shell according to claim 1, characterized in that: A convex flange is fixedly installed circumferentially on the inner wall of the right end face of cylinder one. The outer circumference of the convex flange has an outwardly protruding circular boss. The boss surface of the circular boss is flush with the right end face of the cylinder one wall. The inner side of the convex flange near the circular boss has a recessed stop, and bolt holes are evenly distributed along the circumference of the recessed stop. A concave flange is fixedly installed circumferentially on the inner wall of the left end face of cylinder two. The outer circumference of the concave flange has a circular groove. The groove surface of the circular groove is flush with the left end face of the cylinder two wall. The inner side of the concave flange near the circular groove has a convex stop, and bolt holes are evenly distributed along the circumference of the convex stop.

8. A segmented processing and assembly device for a large rotary kiln shell according to claim 7, characterized in that: The height of the convex stop is greater than the height of the concave stop. When cylinder one and cylinder two are assembled together, the concave stop of cylinder one contacts the convex stop of cylinder two. There is a gap between the boss surface of cylinder one and the groove surface of cylinder two, that is, there is a joint between the cylinder walls of cylinder one and cylinder two.

9. A segmented processing and assembly device for a large rotary kiln shell according to claim 1, characterized in that: The docking assembly consists of a concave flange and a convex flange. The circular boss and the circular groove are sized to match. The cylinder body one and cylinder body two are fixed together by connecting bolts through the bolt holes of the concave and convex flanges.

10. A segmented processing and assembly device for a large rotary kiln shell according to claim 1, characterized in that: The joint between the cylinder walls of cylinder one and cylinder two is provided with bevels to facilitate the butt welding of cylinder one and cylinder two; the non-connecting sides of the concave flange and the convex flange are respectively provided with right-angled triangular reinforcing ribs at intervals with the inner walls of the segmented cylinders.

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