WO2024031781A1

WO2024031781A1 - Integrated rotating component

Info

Publication number: WO2024031781A1
Application number: PCT/CN2022/119559
Authority: WO
Inventors: 赵雁; 王雅梦; 戴天任; 谢鹏飞; 张振潮; 郑向凯; 景淯鹏; 柴灵芝
Original assignee: 洛阳轴承研究所有限公司
Priority date: 2022-08-09
Filing date: 2022-09-19
Publication date: 2024-02-15
Also published as: CN115370730A

Abstract

The present invention relates to the technical field of rotary scanning, and aims to provide an integrated rotating component to solve the technical problems in the prior art of a rotating component being heavier in mass and larger in size due to disordered structural arrangement of the rotating component. The integrated rotating component comprises a bearing assembly, an angle solving assembly, an electric motor assembly and a housing assembly, wherein the housing assembly is provided with a fixed disk; the bearing assembly comprises a central rotating shaft and a flange arranged at the left end of the central rotating shaft; the flange serves as a movable disk rotating relative to the fixed disk, the fixed disk and the movable disk are arranged at an interval on the left and right on a central axis and are parallel to each other, and an installation space is formed between the fixed disk and the movable disk; and the electric motor assembly comprises an electric motor stator and an electric motor rotor; the angle solving assembly comprises a stationary member and a rotating member; the electric motor stator, the electric motor rotor, the stationary member and the rotating member are arranged in a stacked manner in a radial extension direction based on the central axis; the rotating member and the electric motor rotor are fixedly connected to the movable disk; and the stationary member and the electric motor stator are fixedly connected to the fixed disk.

Description

an integrated rotating component

Technical field

The invention relates to the technical field of rotation scanning, and in particular to an integrated rotating component.

Background technique

In the fields of satellites, aerospace and other industries, rotating parts are commonly used as connecting components and are used in a variety of equipment equipped with scanners. For example, rotating parts installed in launching satellites can drive the rotation of the scanning lens. The rotating parts can drive the rotation of the scanning lens. The scanning lens connected to it realizes the measurement state of multi-angle changes; the launch of rockets or weapon equipment also requires a radar component that can monitor the real-time position and launch status of weapons, rockets and other equipment after launch. Radar components are also a type of scanner. , the radar assembly is also equipped with high-precision rotating parts. The rotating parts are connected to the fixed signal receiver and the receiving plate to realize the capture and real-time monitoring of the equipment after launch.

In the existing technology, in order to obtain a high-precision and high-reliability scanning mechanism, people not only need to innovate the lens assembly, but also need to continuously improve and advance the performance of the rotating parts. The Chinese utility model patent with the authorization announcement number CN207008187U has been disclosed. A scanning mechanism for an optical remote sensing instrument. The scanning mechanism mentioned in the patent includes a scanning lens assembly and a rotating component connected to the scanning lens assembly. The rotating component includes movable components located on the left and right sides of the scanning lens assembly. The shaft assembly and the drive shaft assembly, the free shaft assembly and the drive shaft assembly are all transmission connected through their respective rotating half shafts and lens assemblies. The driving shaft assembly includes motor assemblies and rotating bearings that are connected to the rotating half shaft and are spaced left and right. , the traveling shaft assembly includes a rotating bearing connected to the rotating half shaft and arranged left and right and an angle resolution assembly. The angle resolution assembly is a circular synchronous sensor, which drives the rotating half shaft in the drive shaft assembly to rotate through the motor, thereby driving The lens assembly rotates, and then cooperates with the traveling shaft assembly on the other side opposite the drive shaft assembly to make the circular synchronization sensor work, realizing the angle and orientation switching of the lens assembly.

However, the scanning mechanism in the above-mentioned patent has a separate internal traveling shaft assembly and a driving shaft assembly, and its internal components are arranged at intervals on the left and right, resulting in a large overall volume and size of the scanning mechanism, and the lens assembly needs to be installed during installation. Two sets of components are fixedly installed on both sides of the device. The installation process is relatively cumbersome. At the same time, it is also necessary to ensure that the positions of the two sets of components correspond and the accuracy meets the usage requirements. Since the rotating half-shafts in the two-axis assembly have no direct transmission connection and are only fixedly matched with the lens assembly, the assembly of the scanning mechanism is difficult, and it is easy for the drive shaft and the traveling shaft to fail to operate synchronously, and its The internal structure is relatively complex, so the scanning mechanism is not suitable for satellite components with small diameter, small size systems and lightweight requirements. It can be seen from the working principle and working conditions requirements of high-precision scanning and rotating mechanisms that the rotating components are used to drive the front-end connected scanning lens and other structures to rotate. The orientation and angle of the lens need to achieve key technologies such as precise positioning, flexible rotation and stop, and long-term stability. need. However, other rotating parts and scanning mechanisms in the prior art have the technical problems of being larger in size and having internal driving parts and rotating parts arranged in a disorderly manner, resulting in a heavier total mass of the rotating parts and reduced accuracy. A messy arrangement of rotating parts will also cause the actual operating switching speed of the lens to be low when the rotating parts are running, which will affect the lubrication and sealing effects of the rotating parts and reduce the service life of the rotating parts.

Contents of the invention

The purpose of the present invention is to provide an integrated rotating component to solve the technical problem in the prior art that the rotating component structure is arranged in a messy manner, resulting in the rotating component being heavier and larger in volume.

In order to achieve the above objectives, the technical solution of an integrated rotating component provided by the present invention is:

An integrated rotating component includes a bearing component, an angle resolution component and a motor component. The rotating component also includes a housing component. The housing component has a fixed plate; the bearing component includes a central rotating shaft that can rotate relative to the fixed plate and a device. The flange plate at the left end of the central rotating shaft defines the central axis of the central rotating shaft extending in the left and right directions. The flange plate constitutes a moving plate that rotates relative to the fixed plate. The fixed plate and the moving plate are spaced left and right on the central axis. Parallel to each other, the fixed plate and the moving plate form an installation space for the integrated assembly of the bearing assembly, the angle resolution assembly and the motor assembly; the motor assembly includes a motor stator and a motor rotor, and the angle resolution assembly includes a stationary component and the rotating part. The motor stator, the motor rotor, the stationary part, and the rotating part are arranged in a stacked manner in a set order in the radial extension direction based on the central axis. The rotating part, the motor rotor is fixedly connected to the moving plate at the left end, and the The stationary part, the motor stator and the fixing plate on the right end are fixedly connected.

Beneficial effects: In the present invention, the motor assembly, the angle resolution assembly and the housing assembly are all arranged and assembled at intervals with the bearing assembly as the center in a stacked posture radiating outwards. The motor rotor, motor stator and angle resolution assembly of the motor assembly are assembled and fixed. The rotating parts and stationary parts are stacked in the radial direction of the central rotating shaft, and the radial extension directions of each component are on the same plane. Each component is integrated into a stacked rotating component structure. By arranging this stacked rotating component, It greatly improves the space utilization inside the rotating parts, makes the internal structure of the rotating parts more compact, reduces the volume of the rotating parts, and reduces the total weight of the rotating parts, which is in line with the current development requirements for miniaturization and lightweighting of domestic satellite and other equipment. . Compared with the rotating parts in the prior art that have a messy internal structure that results in larger structural volume, heavier total mass, and lower actual operating speed during use, the rotating parts in the present invention have a compact structure and reduced mass after assembly. The rotational torque of the central rotating shaft is reduced, which can control the rapid rotation of rotating parts and reduce the moment of inertia. When the lens assembly is connected to the moving plate, it can achieve flexible hovering and precise positioning of the lens assembly, which is conducive to precise control of rotating parts and long-term The use solves the technical problem in the prior art that the internal structure of the rotating part is arranged in a disorderly manner, resulting in the rotating part being heavier and larger in volume.

Preferably, the bearing assembly includes a balance bearing fixed on the central rotating shaft. The balance bearing includes an inner ring fixed on the central rotating shaft and an outer ring for fixed connection with the fixed plate; the bearing assembly also includes an outer ring fixed on the balance bearing. The bearing seat extends left and right and covers the outer ring of the bearing. The rotation stability of the central rotating shaft in the installation space is ensured by the balancing bearing. The bearing seat covers and fixes the bearing outer ring, which increases the contact area between the bearing outer ring and the outer end components and facilitates the connection between the outer ring of the balancing bearing and other components. fixed.

Preferably, there are two balance bearings arranged at intervals on the central rotating shaft, and both balance bearings are angular contact ball bearings; the bearing seat fixes the outer rings of the two balance bearings. The fixed intervals between the two angular contact ball bearings increase the adjustable angle and rotation range of the central rotating shaft, which is beneficial to the stability of the lens assembly after connection and arrangement, and expands the rotation range.

Preferably, the bearing assembly also includes an inner spacer ring and an outer spacer ring located between the two balance bearings and a dynamic sealing assembly located on the periphery of the central rotating shaft. The dynamic sealing assembly includes a sealing gasket and a locking nut, and the sealing gasket and lock nut are included. Tightening nuts are respectively provided at the outer ends of the two balance bearings to dynamically seal the rotation between the left and right ends of the two bearings and the central rotating shaft. The sealing gasket and locking nut of the dynamic seal assembly can ensure the sealing of the internal lubrication of the balanced bearing and prevent the lubricant added to the bearing from flowing out through the rotation of the central shaft.

Preferably, the dynamic seal assembly further includes a gland disposed between the bearing seat and the central rotating shaft. The gland is fixedly connected to the bearing seat. The gland has a zigzag structure and extends to the outer end of the balance bearing to connect with the bearing seat. The sealing gasket and locking nut form a labyrinth sealing fit. The serrated gland can form a labyrinth-shaped matching sealing structure at the outer end of the bearing to improve the tightness of the dynamic seal.

Preferably, the sealing fit of the gland is provided with an anti-spill coating. The anti-spill coating further prevents the lubricant added to the bearing from spilling out.

Preferably, the angle-resolving component is provided between the motor component and the bearing component, and the stationary parts, rotating parts, motor stator, and motor rotor are arranged in sequence from the outer circumference of the rotating shaft outward in the radial direction of the central rotating shaft. The angle resolution component is arranged between the motor component and the bearing component, so that the angle resolution component is located between the output torque of the motor and the transmission position of the central rotating shaft, which is beneficial to the calculation of the angle resolution component and the accuracy of the measurement results, and prevents the angle resolution component from being Calculate the component offset to cause measurement error on one side.

Preferably, the central rotating shaft has a hollow shaft structure, and the flange is provided with a sinking groove corresponding to the center hole of the central rotating shaft, and the sinking groove is used to be fixedly connected to the lens assembly. The hollow structure reduces the weight of the central rotating shaft, which is beneficial to the weight reduction and speed increase of the central rotating shaft.

Preferably, the fixed plate and the moving plate are both provided with bolt holes, and the bolt holes are provided with fixing bolts. The fixing bolts are used to detachably fix and assemble the corresponding connection structures on the moving plate and the fixed plate. Through the insertion of fixing bolts, each connection structure can be quickly installed and disassembled on both the fixed plate and the moving plate, which is beneficial to the quick connection arrangement and subsequent disassembly and maintenance of the rotating components.

Preferably, the housing assembly includes a sealing housing and an annular sealing plate. The sealing housing is a cylindrical structure with an opening facing left. The bottom plate of the cylinder of the sealing housing constitutes the fixed plate. The sealing housing is used to be fixedly connected to the right end of the central rotating shaft. , the inner cavity and the flange of the sealing shell surround the installation space, and the annular sealing plate is fixed at the left end opening of the sealing shell to close the installation space. The sealing shell is provided with a removable sealing cover arranged toward the central rotating shaft. . The cylindrical sealing shell can cover each connecting component in the inner cavity to protect each connecting component. The annular sealing plate can seal the mouth of the sealing shell to ensure the sealing of the installation space; the detachable sealing cover is convenient for setting Connect the bottom assembly and observe the inside of the sealed housing.

Description of drawings

Figure 1 is a schematic structural diagram of the connection between the integrated rotating component and the lens assembly in Embodiment 1 provided by the present invention;

Figure 2 is a schematic structural diagram of the integrated rotating component in Figure 1;

Figure 3 is a left side view of the integrated rotating component in Figure 2.

Explanation of reference symbols:

1. Bearing assembly; 2. Angle resolution assembly; 3. Motor assembly; 4. Housing assembly; 5. Lens assembly; 6. Center shaft; 7. Flange; 8. Sinking groove; 9. Fixing bolts; 10 , balance bearing; 11. inner spacer ring; 12. outer spacer ring; 13. sealing gasket; 14. locking nut; 15. gland; 16. bearing seat; 17. pressure ring; 18. stationary piece; 19. rotation parts; 20. Motor stator; 21. Motor rotor; 22. Sealed housing; 23. Annular sealing plate; 24. Sealing cover; 25. Anti-spill coating; 26. Installation space.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention. That is, the described embodiments are only some embodiments of the present invention, rather than all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the invention provided in the appended drawings is not intended to limit the scope of the claimed invention, but rather to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any creative work fall within the scope of protection of the present invention.

It should be noted that the possible terms such as “first” and “second” and other relational terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is no such actual relationship or sequence between entities or operations. Furthermore, terms such as "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed. or other elements inherent in the process, method, article or equipment. Without further restrictions, elements defined by the statement "includes a..." do not exclude processes and methods that include said elements.

In the description of the present invention, unless otherwise explicitly stipulated and limited, the terms "installation", "connection" and "connection" that may appear should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between the two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

In the description of the present invention, it should be noted that, unless otherwise expressly stipulated and limited, the term "is provided with" that may appear should be understood in a broad sense. For example, the object of "is provided with" can be a part of the ontology, or it can be It is arranged separately from the body and connected to the body. The connection can be a detachable connection or a non-detachable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

The present invention will be described in further detail below with reference to examples.

Specific embodiment 1 of the integrated rotating component provided by the present invention:

As shown in Figures 1 to 3, the integrated rotating component is connected to the lens assembly 5 when in use, so that it can be connected and arranged in application scenarios such as satellites and aerospace. In this embodiment, the integrated rotating component is used in ground-to-ground applications. The rotating component in the scanning mechanism and the lens assembly 5 connected to the rotating component are high-precision scanning lens components for the ground scanning mechanism.

As shown in Figure 1, the integrated rotating component includes a bearing assembly 1, an angle resolution assembly 2, a motor assembly 3 and a housing assembly 4 that are integrated and assembled together. The bearing assembly 1 is rotatably connected to a lens assembly 5, which defines this embodiment. The lens assembly 5 and the rotating part are fixedly connected in the left and right directions. The bearing assembly 1 is located at the center of the rotating part. The radially outer laminated fixed motor assembly 3 of the bearing assembly 1 is mounted on the bearing assembly 1. The angle resolution assembly 2 is assembled on the bearing assembly 1. In the space between the motor assembly 3 and the housing assembly 4, the housing assembly 4 covers the outside of each fixed assembly, forming an integrated rotating component in which the internal components are stacked in the radial direction of the bearing assembly 1.

More specifically, as shown in Figures 1 and 2, the bearing assembly 1 includes a central rotating shaft 6 and a flange 7 located at the left end of the central rotating shaft 6. The central axis of the central rotating shaft 6 extends along the left and right directions, and the flange 7 constitutes The moving plate rotates with the central rotating shaft 6. The central rotating shaft 6 serves as the center of the entire integrated rotating component for connection and assembly. The left end surface of the flange 7 is used for fixed connection with the lens assembly 5. As shown in Figure 2, in order to reduce the weight of the central rotating shaft 6 and facilitate the connection of the lens assembly 5, the shaft body of the central rotating shaft 6 is a hollow structure, and its central perforation penetrates left and right and extends to the flange 7. The left end of the flange 7 There is a sinking groove 8 on the surface. The center of the sinking groove 8 is connected with the through hole of the central rotating shaft 6 . The sinking groove 8 is used to fix and assemble the lens assembly 5 . Among them, the bearing assembly 1 also includes a balance bearing 10 fixed on the central rotating shaft 6. The balance bearing 10 in this embodiment is an angular contact ball bearing. The angular contact ball bearing connects the central rotating shaft 6 to the rotating component in an angle-adjustable manner. .

As shown in Figures 2 and 3, the housing assembly 4 of the rotating component covers the central rotating shaft 6. The housing assembly 4 includes a cylindrical sealing housing 22 with an opening facing left and a radial outer end of the flange 7. The annular sealing plate 23 is used to seal the left end opening of the sealing shell 22. It is surrounded by the flange 7 - the annular sealing plate 23 - the sealing shell 22 to form an integrated assembly for the bearing assembly. 1. Angle solution Considering the enclosed installation space 26 of the assembly 2 and the motor assembly 3, the installation space 26 extends in the radial direction perpendicular to the central axis. Among them, the motor component 3 includes a motor stator 20 and a motor rotor 21. The angle resolution component 2 includes a stationary part 18 and a rotating part 19. The motor stator 20, the motor rotor 21, the stationary part 18, the rotating part 19 and the balance bearing 10 are all installed. The space 26 is stacked in a set order based on the radial direction of the central axis. As shown in Figures 2 and 3, the center of the right end of the sealing housing 22 is also provided with a detachable sealing cover 24 corresponding to the central rotating shaft 6. When the sealing cover 24 is removed, it is convenient to connect and assemble the components in the inner cavity of the sealing housing 22. Maintenance observation.

In this embodiment, the sealing housing 22 remains stationary after being assembled and fixed outside the central rotating shaft 6, and the flange 7 rotates with the central rotating shaft 6. Therefore, the bottom plate of the right end cylinder of the sealing housing 22 constitutes a fixed plate, and the flange 7 It constitutes a moving plate that rotates relative to the fixed plate. The fixed plate and the moving plate are spaced left and right on the central axis and parallel to each other. The inner ring of the rotating part 19, the motor rotor 21 and the balance bearing 10 is fixedly connected to the moving plate at the left end. The stationary part 18, the motor stator 20 and the outer ring of the balance bearing 10 are fixedly connected to the fixed plate at the right end.

As shown in Figure 2, there are two balance bearings 10. The two balance bearings 10 are angular contact ball bearings of the same model. The two balance bearings are spaced apart on the central rotating shaft 6 and installed back to back. The balance bearing 10 at the left end is close to the flange. The disk 7 is assembled and arranged, and the balance bearing 10 at the right end is arranged close to the bottom of the sealed housing 22. Among them, the bearing assembly 1 also includes a spacer ring located between the two balance bearings 10, a dynamic sealing structure located outside the left and right ends of the two balance bearings 10, and a radially outer ring fixed on the outer ring of the bearing, surrounding the outer rings of the two bearings. Fixed bearing housing 16. As shown in Figure 2, the spacer ring includes an inner spacer ring 11 fixed on the outer circumference of the central rotating shaft 6 and an outer spacer ring 12 spaced apart from the inner spacer ring 11. The inner spacer ring 11 is supported and fixed on the inner rings of the two balance bearings 10. Between them, the outer spacer ring 12 is supported and fixed between the outer rings of the two balance bearings 10, and the spacer ring ensures that the two balance bearings 10 are spaced apart from each other.

As shown in Figure 2, the dynamic seal assembly includes a sealing gasket 13, a locking nut 14 and a gland 15. The sealing gasket 13 and the locking nut 14 are respectively located at the left and right outer ends of the two balance bearings 10 to connect the left and right sides of the two bearings. Both ends are dynamically sealed. The sealing gasket 13 is fixed between the flange 7 and the balance bearing 10 at the left end. The locking nut 14 is screwed and fixed on the right end of the central shaft 6 to pre-tighten the bearing from the right side; the bearing seat 16 The left and right ends extend to the left and right outer ends of the two bearings. One end of the gland 15 is fixed on the bearing seat 16, and the other end extends downward and seals with the sealing gasket 13 and the locking nut 14. The gland 15 is serrated. structure, the sealing gasket 13 and the locking nut 14 are both provided with sealing structures that match the zigzag structure, so that the gland 15, the sealing gasket 13, and the locking nut 14 form a labyrinth-shaped sealing fit. The gland 15 and the bearing seat 16 are fixedly matched by bolts, and the labyrinth-shaped sealing mating surface of the gland 15 is also provided with an anti-spill coating 25.

As shown in Figure 2, the rotating part 19 and the stationary part 18 of the angle resolver assembly 2 both belong to the structure of the precision angle resolver. The stationary part 18 is fixed on the outer periphery of the bearing seat 16, and the right end of the stationary part 18 is fixed by a fixing bolt. 9 is fixed on the fixed plate. In order to ensure that the stationary part is firmly assembled, a pressure ring 17 is also provided on the radial outer circumference of the left end of the bearing seat 16. The pressure ring 17 and the fixing bolt 9 cooperate to fix the stationary part 18. The rotating part 19 is located radially outside the stationary part 18. The left end of the rotating part 19 is fixed on the moving plate through the fixing bolt 9 so as to follow the rotating plate. The stationary part 18 can be calculated in cooperation with the rotating rotating part 19, so that the flange plate 7 calculates the rotation angle and rotation orientation of the central axis 6 and the lens assembly 5 when rotating.

As shown in Figure 2, the motor stator 20 is located on the radial outside of the rotating member 19, and the motor rotor 21 is located on the radial outside of the motor stator 20. Both the motor stator 20 and the motor rotor 21 are fixed to the corresponding disk through fixing bolts 9. superior. In this embodiment, the rotation of the central rotating shaft 6 is driven by the motor component 3. The rotating components are centered on the central rotating shaft 6 and are integrated into each component in a layer-by-layer coating manner. When the motor rotor 21 rotates relative to the motor stator 20, The moving plate rotates synchronously, and the central rotating shaft 6 drives the inner ring of the balance bearing 10 and the rotating member 19 on the moving plate to rotate. The rotating components in this embodiment are centered on the central rotating shaft 6 and are arranged at intervals in the radial direction based on the central axis as a balance bearing 10 , a bearing seat 16 , a stationary part 18 , a rotating part 19 , a motor stator 20 and a motor rotor 21 , each component has a clearance fit and is arranged in a stack, and the moving plate and the fixed plate are provided with bolt holes for the fixing bolts 9 to penetrate.

In this embodiment, a mixed lubrication method of oil-containing cage-lubricating oil-grease can be used inside the angular contact bearing. Such combined grease lubrication can greatly improve the wear and consumption of the bearing under low-speed operation conditions for many years. To achieve the long life requirement of the product, a dynamic sealing structure is adopted to effectively prevent grease from spilling along the central rotating shaft 6. The motor assembly 3 in this embodiment uses a brushless DC motor to provide the bearing assembly 1 with the stable torque it requires and drive the bearing assembly 1 to run smoothly. The precision angle solver in this embodiment is a type of absolute angular displacement sensor. It can detect the scanning angle, position and speed of the lens during the operation of the rotating parts, and realize the connection between the angular displacement signal and the electrical signal. conversion to achieve precise positioning of the scanning angle. During assembly, tighten the locking nut 14 and the central rotating shaft 6 with a certain torque to apply a certain preload to the bearing. In this embodiment, the mating surfaces of the bearing seat 16 and the central rotating shaft 6 are precision ground, while the gland 15, locking nut 14, inner spacer 11, outer spacer 12 and sealing gasket 13 are all precision ground. , so that the parts have high dimensional accuracy and ensure the assembly accuracy of the rotating parts and the lens assembly 5. In this embodiment, the housing component 4 is made of aluminum material to meet the demand for lightweight products. The surfaces of the sealing housing 22, the sealing cover 24, and the annular sealing plate 23 all adopt a conductive oxidation surface treatment method to treat the internal motor components. 3. The angle resolution component 2 and the bearing component 1 play a role in sealing and protection, and achieve the function of stabilizing resistance on the surface of the shell.

In this embodiment, the motor component 3, the angle calculation component 2 and the housing component 4 are all arranged and assembled and fixed at intervals with the bearing component 1 as the center in a stacked posture radiating outwards. The motor component 3 is wrapped and fixed on the bearing component 1 On the radial outside, an angle resolution component 2 is provided in the gap between the motor component 3 and the bearing component 1. The housing component 4 covers the outside of the fixed bearing component 1 and motor component 3. The radial extension of each component The directions are all on the same plane, and each component is arranged in a stack and integrated into a rotating component structure. Through this stacked rotating component, the component structure inside the rotating component is made more compact, which greatly reduces the volume of the rotating component and increases the space. The utilization rate reduces the total weight of rotating parts, which is in line with the current development requirements for miniaturization and lightweighting of domestic satellite and other equipment; compared with the existing technology, the structural volume is larger and the total mass is heavier, resulting in components such as bearings and rotating shafts. The actual operating speed of the rotating component is relatively low during operation. Due to the reduced mass and reduced torque of the rotating component in this embodiment after connection, the rotating component can be controlled to rotate rapidly, reducing the moment of inertia, and enabling the front lens to hover flexibly. Precise positioning is beneficial to the precise control and long-term use of rotating parts, and solves the technical problem in the prior art that the internal structure of the rotating parts is arranged in a messy manner, resulting in the rotating parts being heavier and larger in size.

In this embodiment, the flange plate 7 is integrally provided at the left end of the central rotating shaft 6. The flange plate 7 constitutes the moving plate, and the bottom plate of the right end cylinder of the sealed housing 22 constitutes the fixed plate. Of course, in other embodiments, separate moving plate and fixed plate structures can be additionally provided at the left and right ends of the central rotating shaft. For example, one end of the central rotating shaft can rotate through the fixed plate, and the central rotating shaft passes through the fixed plate and can rotate relative to the fixed plate. , the other end of the central rotating shaft is welded with a moving plate spaced parallel to the fixed plate. The moving plate rotates following the central rotating shaft. The moving plate and the fixed plate form an installation space in the radial direction of the central axis.

Specific embodiment 2 of the integrated rotating component provided by the present invention:

The difference from Embodiment 1 is that in Embodiment 1, the bearing assembly 1 includes a balance bearing 10 and a bearing seat 16 fixed on the outer ring of the bearing. In this embodiment 2, the bearing seat is eliminated, and the stationary part of the angle resolution assembly is directly fixedly connected to the bearing outer ring or the retaining ring between the bearings. In other embodiments, the bearing seat can also be replaced by an arc-shaped fixing plate, a connecting plate or other connecting and fixing structures.

Specific embodiment 3 of the integrated rotating component provided by the present invention:

The difference from Embodiment 1 is that in Embodiment 1, two balance bearings 10 are arranged at intervals on the central rotating shaft 6 , and both balance bearings 10 are angular contact ball bearings. In this embodiment 3, more than two balance bearings are provided. For example, two balance bearings are provided at the left end of the central rotating shaft, and two balance bearings are provided at the right end. A total of four balance bearings are used together. In other embodiments, the balance bearing may also be a deep groove ball bearing.

Specific embodiment 4 of the integrated rotating component provided by the present invention:

The difference from Embodiment 1 is that in this Embodiment 4, the fixing parts of the balance bearing 10 in the bearing assembly 1 can be replaced, for example, the spacer ring can be replaced with a retaining ring or a retaining ring, or the outer ends of the two bearings can be replaced. They are all equipped with sealing gaskets or locking nuts, and an oil groove can also be installed on the gland to facilitate lubrication and dynamic sealing. In the same way, the structural form of the dynamic sealing component can also be changed, for example, sealing gaskets or labyrinth-shaped bearings are provided at both ends of the bearing. sealing accessories.

Specific embodiment 5 of the integrated rotating component provided by the present invention:

The difference from Embodiment 1 is that in Embodiment 1, the components fixed on the moving plate and the fixed plate are all completed by fixing bolts 9 . In this embodiment 5, receiving grooves or fixing holes are provided on the moving plate and the fixed plate for the rotating parts, motor rotor and other components to be embedded and fixed in the corresponding plate bodies. In this case, the fixing bolts and bolt holes can be eliminated. In other embodiments, gluing may also be used to connect and fix the moving plate and the fixed plate with corresponding components.

Specific embodiment 6 of the integrated rotating component provided by the present invention:

The difference from Embodiment 1 is that in Embodiment 1, the central rotating shaft 6 has a hollow shaft structure, and the flange 7 is provided with a sinking groove 8 . In this embodiment 6, the central rotating shaft is a solid structure. At this time, the material of the central rotating shaft can be made of lightweight materials. The sinking groove on the flange can also be omitted, and connecting parts such as clamps and threaded parts are used to connect the central rotating shaft. Connected and fixed to the lens assembly.

Specific embodiment 7 of the integrated rotating component provided by the present invention:

The difference from Embodiment 1 is that in Embodiment 1, the housing assembly 4 includes a separately arranged sealing housing 22 and an annular sealing plate 23 for blocking the left end opening of the sealing housing 22. The sealing housing 22 faces the central axis of rotation. A removable sealing cover 24 is provided at position 6. In this Embodiment 7, the structure of the sealed housing is a cylindrical casing made of two separate and spliced parts. The two cylindrical shells are spliced together to cover each component. In other embodiments, the structural shape of the housing component can also be changed, as long as each component can be covered for protection. For example, the housing component is an integrated cylindrical structure with a supply flange or a center on it. The escape hole through which the rotating shaft passes.

Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still The technical solutions described in the foregoing embodiments may be modified without any creative effort, or some of the technical features may be equivalently replaced. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

An integrated rotating component includes a bearing component (1), an angle resolution component (2) and a motor component (3). It is characterized in that the rotating component also includes a housing component (4), and the housing component (4) has Fixed plate; the bearing assembly (1) includes a central rotating shaft (6) that can rotate relative to the fixed plate and a flange (7) located at the left end of the central rotating shaft (6). The central axis of the central rotating shaft (6) is defined along the Extending in the left and right directions, the flange plate (7) constitutes a moving plate that rotates relative to the fixed plate. The fixed plate and the moving plate are spaced left and right on the central axis and parallel to each other. The fixed plate and the moving plate form a moving plate. The installation space (26) for integrating the bearing assembly (1), the angle resolution assembly (2) and the motor assembly (3); the motor assembly (3) includes a motor stator (20) and a motor rotor (21) , the angle solution component (2) includes a stationary part (18) and a rotating part (19). The motor stator (20), the motor rotor (21), the stationary part (18), and the rotating part (19) are arranged on the diameter based on the central axis. They are stacked in a set order in the extending direction. The rotating part (19) and the motor rotor (21) are fixedly connected to the moving plate at the left end. The stationary part (18) and the motor stator (20) are connected to the stator at the right end. Disk fixed connection.
The integrated rotating component according to claim 1, characterized in that the bearing assembly (1) includes a balancing bearing (10) fixed on the central rotating shaft (6), and the balancing bearing (10) includes a balancing bearing fixed on the central rotating shaft (6). 6) and an outer ring for fixed connection with the fixed plate; the bearing assembly (1) also includes a bearing seat (16) fixed on the outer ring of the balance bearing (10), the bearing seat (16) extends left and right and Cover the outer ring of the bearing.
The integrated rotating component according to claim 2, characterized in that there are two balance bearings (10) arranged at intervals on the central rotating shaft (6), and both balance bearings (10) are angular contact ball bearings; The bearing seat (16) fixes the outer rings of the two balance bearings (10).
The integrated rotating component according to claim 3, characterized in that the bearing assembly (1) further includes an inner spacer ring (11) and an outer spacer ring (12) located between the two balance bearings (10); A dynamic seal assembly is provided on the outer periphery of the central rotating shaft (6). The dynamic seal assembly includes a sealing gasket (13) and a locking nut (14). The sealing gasket (13) and the locking nut (14) are respectively located on the two balance bearings (10). ) to dynamically seal the rotation between the left and right ends of the two bearings and the central rotating shaft (6).
The integrated rotating component according to claim 4, characterized in that the dynamic seal assembly further includes a gland (15) located between the bearing seat (16) and the central rotating shaft (6), and the gland (15) Fixedly connected to the bearing seat, the gland (15) has a zigzag structure. The gland (15) extends to the outer end of the balance bearing (10), thereby forming a labyrinth shape with the sealing gasket (13) and the locking nut (14). Sealing fit.
The integrated rotating part according to claim 5, characterized in that the sealing fit of the gland (15) is provided with an anti-spill coating (25).
The integrated rotating component according to any one of claims 1-6, characterized in that the angle resolution component (2) is provided between the motor component (3) and the bearing component (1), and the center In the radial direction of the rotating shaft (6), the stationary part (18), the rotating part (19), the motor stator (20), and the motor rotor (21) are arranged in sequence from the outer circumference of the rotating shaft outward.
The integrated rotating component according to any one of claims 1-6, characterized in that the central rotating shaft (6) is a hollow shaft structure, and the flange (7) is provided with a sinking groove (8) ), the sinking groove (8) corresponds to the center hole of the central rotating shaft (6), and the sinking groove (8) is used for fixed connection with the lens assembly (5).
The integrated rotating part according to claim 8, characterized in that the fixed plate and the moving plate are both provided with bolt holes, and the bolt holes are equipped with fixing bolts (9), and the fixing bolts (9) are used for Each connecting structure corresponding to the moving plate and the fixed plate is detachably fixed and assembled.
The integrated rotating part according to any one of claims 1-6, characterized in that the housing assembly (4) includes a sealing housing (22) and an annular sealing plate (23), and the sealing housing (22) is A cylindrical structure with an opening facing left, the bottom plate of the sealing housing (22) constitutes the fixed plate, the sealing housing (22) is used to be fixedly connected to the right end of the central rotating shaft (6), and the inner cavity and flange of the sealing housing are (7) encloses the installation space (26), and the annular sealing plate (23) is fixed at the left end opening of the sealing housing (22) to close the installation space (26). The sealing housing (22) is provided with a direction facing A removable sealing cover (24) arranged on the central rotating shaft (6).