An ultra-high temperature bearing-rotor self-aligning system
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HARBIN INST OF TECH
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-21
AI Technical Summary
In ultra-high temperature environments, bearing-rotor systems may jam or experience accelerated wear due to thermal deformation, affecting the stability and lifespan of the equipment. Traditional designs are unlikely to have self-aligning or self-adaptive capabilities in high-temperature environments.
It adopts a combination structure of cylindrical roller bearings and crossed roller bearings, combined with limit sleeves and spring assemblies, to achieve axial adaptive adjustment. Through the coordinated cooperation of self-aligning bearing sliding seat and bearing flange, it automatically compensates for thermal expansion and axial load changes.
It achieves automatic compensation for axial displacement in ultra-high temperature environments, avoids thermal jamming or axial overload, ensures the operational stability and high precision of the bearing-rotor system under extreme load conditions, and extends its service life.
Smart Images
Figure CN121066948B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a bearing self-aligning system, belonging to the technical field of bearing installation methods, fits, and positioning under high-temperature environments. Background Technology
[0002] Bearing-rotor systems operating in ultra-high temperature environments are widely used in aerospace, energy, and metallurgy. As advanced equipment demands increasingly higher performance and reliability, the operating temperatures of bearing-rotor systems are rising (typically requiring the ability to withstand temperatures exceeding 800°C). Under these conditions, the bearing-rotor system bears heavy loads and automatically compensates for thermal deformation of the shaft caused by temperature. Without adaptive control of this thermal deformation, the shaft may seize or experience accelerated wear, severely impacting equipment stability and lifespan.
[0003] Traditional bearing-rotor system designs often focus on mechanical strength and wear resistance at room or medium temperatures. However, in ultra-high temperature environments, the mechanical properties, lubrication conditions, and coefficients of thermal expansion of materials undergo significant changes, rendering conventional structures and technologies inadequate. In particular, when bearings need to operate continuously in high-temperature environments, they must not only possess high-temperature strength and thermal stability but also a certain degree of self-aligning or self-adaptive capability. This allows them to respond in real-time to the thermal deformation of the shaft caused by temperature changes, maintaining dynamic alignment between the bearing and the rotor, thereby reducing friction, decreasing wear, and extending service life.
[0004] Therefore, there is an urgent need to propose an ultra-high temperature bearing-rotor self-aligning system to solve the above-mentioned technical problems. Summary of the Invention
[0005] To address the aforementioned problems, an ultra-high temperature bearing-rotor self-aligning system is provided. A brief overview of the invention is given below to provide a basic understanding of certain aspects of the invention. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention.
[0006] The technical solution of the present invention: A self-aligning bearing-rotor system for ultra-high temperature bearings includes: a left mounting sleeve of a cylindrical roller bearing assembly connected to a main shaft; the left mounting sleeve and a left limiting sleeve connected via a first bearing on the left; a bearing support connected to the outer ring of a second bearing; the left side of the bearing support engaging with the left bearing flange and the left limiting sleeve; two ends of a spring on the left side connected to the left mounting sleeve and the inner ring of the second bearing, respectively; the right side of the bearing support connected to a right bearing flange; the right mounting sleeve connected to the right bearing flange via a first bearing on the right; the right mounting sleeve engaging with the right limiting sleeve; two ends of a spring on the right side connected to the inner ring of the second bearing and the right limiting sleeve, respectively; and a bearing locking nut threadedly connected to the main shaft.
[0007] Preferably, the first bearing is a crossed roller bearing, and the second bearing is a cylindrical roller bearing.
[0008] Preferably, the left mounting sleeve of the cylindrical roller bearing component has a first annular groove opening to the right. The inner ring of the first annular groove of the left mounting sleeve is connected to the main shaft through an transition fit. The left side of the left mounting sleeve is in contact with and pressed against the right positioning surface of the main shaft. The inner wall of the outer ring of the first annular groove of the left mounting sleeve is rotatably connected to the left limiting sleeve located inside the groove through the first bearing on the left side. The right mounting sleeve is rotatably connected to the right bearing flange on its outer side through the first bearing on the right side.
[0009] Preferably, the left end of the left bearing flange, the right end of the left limiting sleeve, the right end of the right mounting sleeve, and the left end of the right limiting sleeve are all equipped with toothed structures. The toothed structures of the left bearing flange and the left limiting sleeve are correspondingly set, and the toothed structures of the right mounting sleeve and the right limiting sleeve are correspondingly set.
[0010] Preferably: the cylindrical roller bearing end cap of the cylindrical roller bearing assembly presses against the right end of the outer ring of the second bearing; the cylindrical roller bearing end cap is connected to the bearing support; the cylindrical roller bearing end cap is connected to the right-side bearing flange; an annular stop and a slot are machined on the inner wall of the outer ring of the first annular groove of the left mounting sleeve; the left side of the outer ring of the first bearing on the left abuts against the annular stop; the right side of the outer ring of the first bearing on the left is held against by the cross roller bearing retaining spring in the slot; an annular retaining edge is machined on the left side of the left limiting sleeve; an external thread is machined on the right side of the left limiting sleeve; the left side of the inner ring of the first bearing on the left abuts against the annular retaining edge; the cross roller bearing locking nut is threadedly connected to the left limiting sleeve through external thread engagement; the left side of the cross roller bearing locking nut abuts against the right side of the inner ring of the first bearing on the left.
[0011] Preferably, it also includes a self-aligning bearing component, which includes: a bearing housing, a spindle fixed end cap, an end cap fastening screw, and a third bearing. The outer ring of the third bearing is connected to the bearing housing, and the inner ring of the third bearing is fitted onto the other end of the spindle. The right side of the inner ring of the third bearing presses against the left side positioning surface of the spindle. A threaded hole is machined on the left end of the spindle. The end cap fastening screw passes through the through hole on the spindle fixed end cap and connects to the threaded hole. The end cap fastening screw presses against the left side of the inner ring of the third bearing.
[0012] Preferably, the third bearing is a self-aligning roller bearing.
[0013] Preferably, the outer ring of the third bearing is connected to the self-aligning bearing sliding seat with a transition fit, the self-aligning bearing support and the self-aligning bearing sliding seat are connected with an interference fit, the self-aligning bearing end cover and the self-aligning bearing support are connected by fastening screws, and the right end of the self-aligning bearing end cover presses against the left side of the outer ring of the third bearing, so that the right side of the outer ring of the third bearing presses against the right end retaining edge of the self-aligning bearing sliding seat.
[0014] The present invention has the following beneficial effects: 1. This invention has axial adaptive adjustment capability: Through the sliding design of the self-aligning bearing sliding seat in the support, combined with the spring assembly and the limiting sleeve structure, the axial displacement caused by thermal expansion or axial load changes of the spindle under ultra-high temperature conditions is automatically compensated, thereby effectively avoiding thermal jamming or axial overload problems.
[0015] 2. This invention achieves reliable bearing and transmission of large axial loads: By setting up a combined structure of crossed roller bearings and cylindrical roller bearings, and with the coordinated cooperation of the limiting sleeve and the bearing flange, this invention enables large axial loads to be effectively transmitted from the main shaft to the fixed support structure, ensuring the operational stability of the bearing-rotor system under extreme load conditions.
[0016] 3. The present invention has a compact structure and is suitable for high temperature and complex working conditions: the main components are closely coordinated and occupy little space, making it suitable for installation in bearing-rotor systems with high temperature, high speed and high precision requirements, and has good engineering application prospects.
[0017] 4. This invention achieves automatic adjustment function under all working conditions: regardless of whether the axial resultant force acts on the left or right side, the system can automatically adjust the position of the main shaft through structural response, realize the adaptive adjustment of bidirectional thermal displacement and load, and significantly improve the reliability and intelligence level of the system. Attached Figure Description
[0018] Figure 1 This is an assembly isometric drawing of an ultra-high temperature bearing-rotor self-aligning system.
[0019] Figure 2 This is a cross-sectional view of the assembly of the ultra-high temperature bearing-rotor self-aligning system.
[0020] Figure 3 This is a schematic diagram of the right-side load-bearing flange connection method.
[0021] Figure 4 This is a schematic diagram showing the fit and classification of the left-side bearing flange and the left-side crossed roller bearing limiting sleeve.
[0022] Figure 5 This is a partial sectional view of the assembly of the ultra-high temperature bearing-rotor self-aligning system when the axial resultant force is to the right.
[0023] Figure 6 This is a partial sectional view of the assembly of the ultra-high temperature bearing-rotor self-aligning system when the axial resultant force is to the left.
[0024] Figure 7 It is a cylindrical roller bearing. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.
[0026] Specific implementation method one: Combining Figure 1-7 This embodiment describes an ultra-high temperature bearing-rotor self-aligning system, comprising a cylindrical roller bearing component 3, which is installed on one side of the main shaft 2. The cylindrical roller bearing component 3 includes: a left mounting sleeve 31, a spring 32, a left limiting sleeve 33, a first bearing 34, a left bearing flange 37, a bearing support 38, a second bearing 39, a right bearing flange 311, a bearing locking nut 312, a right mounting sleeve 313, and a right limiting sleeve 314. The cylindrical roller bearing assembly 3 consists of the left first mounting sleeve 31, the left limit sleeve 33, the left first bearing 34, the left spring 32, the left bearing flange 37, the bearing support 38, the second bearing 39, the right bearing flange 311, the right mounting sleeve 313, the right first bearing 34, the right spring 32, the right limit sleeve 314, and the bearing locking nut 312, which are coaxially mounted on the main shaft 2 from right to left. The left mounting sleeve 31 of the cylindrical roller bearing component 3 is connected to the main shaft 2. The left mounting sleeve 31 and the left limiting sleeve 33 are connected through the left first bearing 34. The left end of the left bearing flange 37 is engaged with the right end of the left limiting sleeve 33. The bearing support 38 is connected to the outer ring 392 of the second bearing 39 inside it through a transition fit. The left side of the bearing support 38 is connected to the left limiting sleeve 33 via a left bearing flange 37 bolted to it. One end of the left spring 32 presses against the left mounting sleeve 31, and the other end of the left spring 32 passes sequentially through the left limiting sleeve 33 and the left bearing flange 37 to press against the left end of the inner ring 391 of the second bearing 39. The inner ring 391 of the second bearing 39 has a transition fit with the main shaft. Both ends of the left spring 32 are connected to the left mounting sleeve 31 and the inner ring 391 of the second bearing 39, respectively. The right side of the bearing support 38 is bolted to the right bearing flange 311. The right mounting sleeve 313 is connected to the right bearing flange 311 via the right first bearing 34. The right end of the right mounting sleeve 313 is connected to the left end of the right limiting sleeve 314, and one end of the right spring 32 presses against it. The right end of the inner ring 391 of the second bearing 39, and the other end of the spring 32 on the right side, pass sequentially through the bearing support 38, the cylindrical roller bearing end cover 310, the right bearing flange 311, and the right mounting sleeve 313 to press against the right limiting sleeve 314. The two ends of the spring 32 on the right side are respectively connected to the inner ring 391 of the second bearing 39 and the right limiting sleeve 314 to realize the axial displacement compensation function. The bearing locking nut 312 is threadedly connected to the main shaft 2 and presses against the right end face of the right limiting sleeve 314. During the installation of the main shaft 2 or under ultra-high temperature conditions, the self-aligning bearing can generate a certain angle of deflection in the axial direction, thereby realizing adaptive compensation and adjustment of the rotor shaft system deflection, effectively maintaining the operating accuracy and fit stability of the bearing-rotor system in the high temperature environment. This invention relates to a bearing-rotor self-aligning system suitable for ultra-high temperature environments, while also possessing high load-bearing capacity and adaptive thermal deformation compensation. The system's structure is designed, including installation method, fit, and positioning. It maintains proper fit between the bearing and rotor in ultra-high temperature environments and automatically compensates for axial thermal deformation of the shaft caused by temperature. Simultaneously, it can withstand large axial and radial loads, ensuring the system meets actual ultra-high temperature operating conditions while guaranteeing stability and operational efficiency, extending service life. With its high load-bearing capacity and self-aligning function, it is suitable for harsh environments such as space where maintenance is difficult, saving costs and providing a solid foundation for space missions.
[0027] Specific Implementation Method Two: Combining Figure 1-7This embodiment describes an ultra-high temperature bearing-rotor self-aligning system. The first bearing 34 is a crossed roller bearing, the second bearing 39 is a cylindrical roller bearing, the first sleeve 31 is a left-side crossed roller bearing mounting sleeve, the left-side limiting sleeve 33 is a left-side crossed roller bearing limiting sleeve, the right-side limiting sleeve 313 is a right-side crossed roller bearing mounting sleeve, the right-side limiting sleeve 314 is a right-side crossed roller bearing limiting sleeve, and the bearing support 38 is a cylindrical roller bearing support. A fully constrained fixing method is used to ensure stable support during axial load transmission and the rotation of the main shaft 2.
[0028] Specific implementation method three: Combining Figure 1-7 This embodiment describes an ultra-high temperature bearing-rotor self-aligning system. The left mounting sleeve 31 of the cylindrical roller bearing component 3 has a first annular groove opening to the right. The inner ring of the first annular groove of the left mounting sleeve 31 is connected to the main shaft 2 via a transition fit. The left side of the left mounting sleeve 31 contacts and abuts against the right positioning surface of the main shaft 2's shoulder. The inner wall of the outer ring of the first annular groove of the left mounting sleeve 31 is rotatably connected to the left limiting sleeve 33 located inside the groove via a first bearing 34 on the left side. The right mounting sleeve 313 is rotatably connected to the right bearing flange 311 on its outer side via a first bearing 34 on the right side. This system utilizes limited space for creative design, resulting in a reasonable spatial layout. While ensuring the stability of the device, it further protects the mating positions of the left bearing flange 37 and the left limiting sleeve 33, and the right mounting sleeve 313 and the right limiting sleeve 314, preventing obstruction by foreign objects, deformation damage caused by impacts, etc., and ensuring smooth engagement and disengagement processes.
[0029] Specific implementation method four: Combination Figure 1-7 This embodiment describes an ultra-high temperature bearing-rotor self-aligning system. The left end of the left bearing flange 37, the right end of the left limiting sleeve 33, the right end of the right mounting sleeve 313, and the left end of the right limiting sleeve 314 are all equipped with toothed structures. The toothed structures of the left bearing flange 37 and the left limiting sleeve 33 are correspondingly arranged, as are the toothed structures of the right mounting sleeve 313 and the right limiting sleeve 314. This allows for both separation and engagement, enabling load transfer and rotation along the shaft. The mutual installation, engagement, and positioning of these components constitute the ultra-high temperature heavy-duty bearing-rotor self-aligning system.
[0030] Specific Implementation Method Five: Combining Figure 1-7This embodiment describes an ultra-high temperature bearing-rotor self-aligning system. The cylindrical roller bearing component 3 further includes a crossed roller bearing retaining ring 35, a crossed roller bearing locking nut 36, and a cylindrical roller bearing end cap 310. The left end of the cylindrical roller bearing end cap 310 presses against the right end of the outer ring 392 of the second bearing 39, causing the left end of the outer ring 392 of the second bearing 39 to press against the retaining ring on the left side of the bearing support 38. The left flange structure of the cylindrical roller bearing end cap 310 is connected to the right end of the bearing support 38 by circumferentially arranged bolts. The left flange structure of the cylindrical roller bearing end cap 310 is also bolted to the right bearing flange 311. An annular stop and a slot are machined on the inner wall of the outer ring of the first annular groove of the side mounting sleeve 31. The left side of the outer ring of the first bearing 34 on the left side abuts against the annular stop, and the right side of the outer ring of the first bearing 34 on the left side is abutted by the cross roller bearing retainer 35 in the slot. An annular retaining edge is machined on the left side of the left limiting sleeve 33, and an external thread is machined on the right side of the left limiting sleeve 33. The left side of the inner ring of the first bearing 34 on the left side abuts against the annular retaining edge. The cross roller bearing locking nut 36 is threadedly connected to the left limiting sleeve 33 through external thread engagement. The left side of the cross roller bearing locking nut 36 abuts against the right side of the inner ring of the first bearing 34 on the left side.
[0031] Specific Implementation Method Six: Combination Figure 1-7 This embodiment describes an ultra-high temperature bearing-rotor self-aligning system, which further includes a self-aligning bearing component 1. The self-aligning bearing component 1 includes: a bearing housing, a main shaft fixing end cover 13, an end cover fastening screw 14, and a third bearing 17. The outer ring of the third bearing 17 is connected to the bearing housing with a transition fit, and the inner ring of the third bearing 17 is fitted onto the other end of the main shaft 2 and connected with it with a transition fit. The right side of the inner ring of the third bearing 17 presses against the left side positioning surface of the shaft collar of the main shaft 2. A threaded hole is machined on the left end of the main shaft 2. The end cover fastening screw 14 passes through the through hole on the main shaft fixing end cover 13 and connects to the threaded hole. The end cover fastening screw 14 presses against the left side of the inner ring of the third bearing 17.
[0032] Specific implementation method seven: Combining Figure 1-7 This embodiment describes an ultra-high temperature bearing-rotor self-aligning system, wherein the third bearing 17 is a roller self-aligning bearing.
[0033] Specific implementation method eight: Combination Figure 1-7This embodiment describes an ultra-high temperature bearing-rotor self-aligning system. The self-aligning bearing component 1 further includes: fastening screws 11, a self-aligning bearing end cap 12, a self-aligning bearing support 15, and a self-aligning bearing sliding seat 16. The outer ring of the third bearing 17 is connected to the self-aligning bearing sliding seat 16 via a transition fit. The self-aligning bearing support 15 and the self-aligning bearing sliding seat 16 are also connected via a transition fit. The self-aligning bearing end cap 12 is connected to the self-aligning bearing support 15 by fastening screws 11 arranged evenly in the circumference. The right end of the self-aligning bearing end cap 12 presses against the left side of the outer ring of the third bearing 17, so that the right side of the outer ring of the third bearing 17 presses against the right end retaining edge of the self-aligning bearing sliding seat 16.
[0034] Example 1: Combination Figure 1-7 As shown, an ultra-high temperature bearing-rotor self-aligning system comprises three parts: a self-aligning bearing component 1, a main shaft 2, and a second bearing component 39. The self-aligning bearing component 1 consists of a fastening screw 11, a self-aligning bearing end cap 12, a main shaft 2 fixed end cap 13, an end cap fastening screw 14, a self-aligning bearing support 15, a self-aligning bearing sliding seat 16, and a third bearing 17. The second bearing component 39 consists of a left mounting sleeve 31, a spring 32, a left limiting sleeve 33, a first bearing 34, a crossed roller bearing retaining ring 35, a crossed roller bearing locking nut 36, a left bearing flange 37, a bearing support 38, a second bearing 39 (inner ring and outer ring), a cylindrical roller bearing end cap 310, a right bearing flange 311, a bearing locking nut 312, a left bearing flange 37, and a bearing locking nut 312.
[0035] In the ultra-high temperature bearing-rotor self-aligning system, both the self-aligning bearing support 15 and the bearing support 38 are fixed. The self-aligning bearing is fixedly installed using a fully constrained method. The outer ring of the second bearing 39 is also installed using a fully constrained fixed method, while its inner ring is connected to springs 32 on both sides to achieve axial displacement compensation. The first bearing 34 is also set using a fully constrained fixed method to ensure stable support during axial load transmission and rotation of the spindle 2.
[0036] During the installation of spindle 2 or operation under ultra-high temperature conditions, the self-aligning bearing can generate a certain angle of deflection in the axial direction, thereby realizing adaptive compensation and adjustment of the rotor shaft system deflection, effectively maintaining the operating accuracy and fit stability of the bearing-rotor system in high temperature environment.
[0037] Under ultra-high temperature conditions, and with the axial resultant force acting to the right, the self-aligning bearing sliding seat 16 slides from left to right inside the self-aligning bearing support 15, causing the main shaft 2 to move to the right as a whole. As the main shaft 2 moves, the spring 32, connected to the left mounting sleeve 31 and the inner ring of the second bearing 39, is compressed, pushing the inner ring of the second bearing 39 to displace axially from left to right. When this axial displacement reaches the preset limit position of the inner ring of the second bearing 39, the left limiting sleeve 33 and the left bearing flange 37 contact each other and enter a mating state. The left bearing flange 37 is fixedly mounted on the bearing support 38, thereby limiting further axial movement of the inner ring of the second bearing 39 and transferring the axial load in this direction to the bearing support 38 and the first bearing 34, achieving effective transmission of a large axial load. Furthermore, the first bearing 34 not only bears the axial load of the main shaft 2 but also, through its structural characteristics, can rotate with the main shaft 2, thereby reducing the frictional force when the main shaft 2 rotates under large axial load conditions. Meanwhile, in the right-side structure of the second bearing 39 component 3, the spring 32, connected to the mounting sleeve of the right-side first bearing 34, is compressed and pushes the inner ring of the second bearing 39 to the right, thereby separating the load-bearing locking nut 312 from the right-side load-bearing flange 311 and releasing the axial restraint effect of the right-side structure. The ultra-high temperature bearing-rotor system of this invention can achieve automatic compensation for axial load and axial displacement caused by thermal expansion in ultra-high temperature environments with a resultant axial force acting to the right, ensuring the stability and reliability of system operation.
[0038] Under ultra-high temperature conditions, and with the axial resultant force acting to the left, the self-aligning bearing sliding seat 16 slides from right to left within the self-aligning bearing support 15, causing the main shaft 2 to move to the left as a whole. As the main shaft 2 moves, the spring 32, connected to the mounting sleeve of the first bearing 34 on the right and the inner ring of the second bearing 39, is compressed, pushing the inner ring of the second bearing 39 to displace axially from right to left. When this displacement reaches the design limit, the load-bearing locking nut 312 engages with the right-side load-bearing flange 311, preventing axial displacement from right to left. Simultaneously, the self-aligning bearing sliding seat 16 contacts the self-aligning bearing end cover 12, completing the final positioning of the main shaft 2's movement. Axial thermal deformation caused by thermal expansion of the main shaft 2 can still be compensated axially. The right-side load-bearing flange 311 is fixedly mounted on the bearing support 38, effectively limiting axial displacement and transferring the axial load to the bearing support 38 and the first bearing 34, achieving stable bearing of large axial loads. Furthermore, the first bearing 34 rotates with the main shaft 2 while bearing the load, thereby effectively reducing the frictional resistance of the main shaft 2 during rotation under large axial load conditions. Correspondingly, in the left-side structure of the second bearing 39 component 3, the spring 32 connecting the inner ring of the second bearing 39 and the left-side mounting sleeve 31 is compressed, pushing the left-side limiting sleeve 33 to separate from the left-side bearing flange 37, releasing its axial constraint on the main shaft 2. Through the above structural design, the ultra-high temperature bearing-rotor system of the present invention can still achieve automatic compensation functions for axial thermal displacement and axial load under ultra-high temperature conditions with the axial resultant force acting to the left, ensuring the stability and accuracy of system operation.
[0039] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, the present invention will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present invention.
[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A self-aligning system for an ultra-high temperature bearing-rotor, characterized in that: include: The left mounting sleeve (31) of the cylindrical roller bearing assembly (3) is connected to the main shaft (2), the left mounting sleeve (31) and the left limiting sleeve (33) are connected through the left first bearing (34), and the bearing support (38) is connected to the outer ring (392) of the second bearing (39). The left side of the bearing support (38) is connected to the left bearing flange (37) and the left limiting sleeve (33). The two ends of the left spring (32) are connected to the left mounting sleeve (31) and the inner ring (391) of the second bearing (39), respectively. The right side of the bearing support (38) is connected to the right bearing flange (311). The right mounting sleeve (313) is connected to the right bearing flange (311) through the right first bearing (34). The right mounting sleeve (313) is connected to the right limiting sleeve (314). The two ends of the right spring (32) are connected to the inner ring (391) of the second bearing (39) and the right limiting sleeve (314), respectively. The bearing locking nut (312) is threadedly connected to the main shaft (2). The left end of the left bearing flange (37), the right end of the left limiting sleeve (33), the right end of the right mounting sleeve (313), and the left end of the right limiting sleeve (314) are all equipped with toothed structures. The toothed structure of the left bearing flange (37) is set in correspondence with the toothed structure of the left limiting sleeve (33), and the toothed structure of the right mounting sleeve (313) and the toothed structure of the right limiting sleeve (314) are set in correspondence.
2. The ultra-high temperature bearing-rotor self-aligning system according to claim 1, characterized in that: The first bearing (34) is a crossed roller bearing, and the second bearing (39) is a cylindrical roller bearing.
3. The ultra-high temperature bearing-rotor self-aligning system according to claim 1, characterized in that: The left mounting sleeve (31) of the cylindrical roller bearing component (3) has a first annular groove with an opening to the right. The inner ring of the first annular groove of the left mounting sleeve (31) is connected to the main shaft (2) through an transition fit. The left side of the left mounting sleeve (31) is in contact with the right positioning surface of the main shaft (2) and is pressed tightly. The inner wall of the outer ring of the first annular groove of the left mounting sleeve (31) is rotatably connected to the left limiting sleeve (33) set inside the groove through the first bearing (34) on the left side. The right mounting sleeve (313) is rotatably connected to the right bearing flange (311) on the outside of it through the first bearing (34) on the right side.
4. The ultra-high temperature bearing-rotor self-aligning system according to claim 3, characterized in that: The cylindrical roller bearing end cap (310) of the cylindrical roller bearing assembly (3) presses against the right end of the outer ring (392) of the second bearing (39). The cylindrical roller bearing end cap (310) is connected to the bearing support (38) and the cylindrical roller bearing end cap (310) is connected to the right bearing flange (311). The inner wall of the outer ring of the first annular groove of the left mounting sleeve (31) is machined with an annular stop and a groove. The left side of the outer ring of the first bearing (34) on the left side abuts against the annular stop. The outer ring of the first bearing (34) is held in place by the cross roller bearing retainer (35) in the slot. The left side of the left limiting sleeve (33) is machined with an annular retaining edge, and the right side of the left limiting sleeve (33) is machined with an external thread. The left side of the inner ring of the first bearing (34) on the left side is held against the annular retaining edge. The cross roller bearing locking nut (36) is threadedly connected to the left limiting sleeve (33) through external thread engagement. The left side of the cross roller bearing locking nut (36) is held against the right side of the inner ring of the first bearing (34) on the left side.
5. A self-aligning system for an ultra-high temperature bearing-rotor according to claim 1 or 2, characterized in that: It also includes a self-aligning bearing component (1), the outer ring of the third bearing (17) of the self-aligning bearing component (1) is connected to the bearing housing, the inner ring of the third bearing (17) is fitted on the other end of the spindle (2), the right side of the inner ring of the third bearing (17) is pressed against the left side positioning surface of the spindle (2), the left end of the spindle (2) is machined with a threaded hole, the end cap fastening screw (14) passes through the through hole on the spindle fixed end cap (13) and connects with the threaded hole, and the end cap fastening screw (14) presses the left side of the inner ring of the third bearing (17).
6. The ultra-high temperature bearing-rotor self-aligning system according to claim 5, characterized in that: The third bearing (17) is a self-aligning roller bearing.
7. The ultra-high temperature bearing-rotor self-aligning system according to claim 6, characterized in that: The outer ring of the third bearing (17) is connected to the self-aligning bearing slide seat (16) with a transition fit. The self-aligning bearing support (15) and the self-aligning bearing slide seat (16) are connected with a transition fit. The self-aligning bearing end cap (12) is connected to the self-aligning bearing support (15) by fastening screws (11). The right end of the self-aligning bearing end cap (12) presses against the left side of the outer ring of the third bearing (17), so that the right side of the outer ring of the third bearing (17) presses against the right end flange of the self-aligning bearing slide seat (16).