Motor rotor locking structure and motor
By integrated the lock structure of the bearing outer cover, the inner ring of the bearing, and the elastic lock ring in the motor, the problem of the risk and operation complexity during the motor rotor transportation process is solved, and the stable locking and simple operation are realized It improves the safety and reliability of the motor.
Patent Information
- Application Number
- CN202411581047.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-01-28
AI Technical Summary
There is a displacement risk during the transportation of existing motor rotors, resulting in rotor damage and bearing instability, and the existing transportation protection devices are complex in operation and poor in versatility.
Design a rotor locking structure integrated in the motor, including the bearing outer ring cover, the inner ring of the bearing inner ring, and the elastic lock ring. By adjusting the adjustment part, the lock ring contracted the lock tightly, and when the external force is lost Automatic expansion to form a gap.
The stable locking of the motor rotor during transportation, simplifying the operation process, reducing the difficulty and time cost of the operation, and improving the safety and reliability of the motor.
Smart Images
Figure CN119382404A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of motors, and in particular to a motor rotor locking structure and a motor. Background Art
[0002] In modern industry and transportation, motors are core power components, and their stability and safety are of vital importance. The motor rotor is a key component of the motor, and its stability during transportation directly affects the subsequent performance and service life of the motor. Since the rotor may be displaced due to vibration and impact during transportation, this will not only cause damage to the rotor itself, but may also have an adverse effect on the bearings.
[0003] The current technical solutions provide protection for motor rotors to a certain extent, but there are some obvious shortcomings. Existing transportation protection devices often rely on external tooling to limit the movement of the rotor. These solutions are usually complicated to operate and require additional time and resources. In addition, these protection measures are less versatile and difficult to adapt to motor rotors of different types and specifications, resulting in poor results in practical applications. At the same time, since there is still a risk of displacement of the rotor during transportation, the safety and stability of the bearings are affected. Summary of the invention
[0004] The purpose of the present application is to provide a motor rotor locking structure, which is integrated into the motor locking structure and uses the elastic locking ring and the adjusting member to achieve stable locking and simple operation of the motor rotor during transportation, effectively solving the rotor displacement risk and operation complexity problems in the prior art, and improving the transportation safety and reliability of the motor. Another purpose of the present application is to provide a motor.
[0005] To achieve the above-mentioned purpose, the present application provides a motor rotor locking structure, which is integrated in the motor, and the motor is provided with an end cover, a bearing, a rotating shaft and a coupling. The motor rotor locking structure includes a bearing outer ring pressure cover arranged on the end cover and a bearing inner ring retaining ring arranged on the rotating shaft, a locking ring is provided between the bearing outer ring pressure cover and the bearing inner ring retaining ring, the bearing outer ring pressure cover is provided with an adjusting piece, the locking ring is an elastic structure, the end cover is provided with an operating port, the adjusting piece is located in the operating port, the locking ring is contracted by adjusting the adjusting piece to lock the bearing inner ring retaining ring, and the locking ring is used to expand when the external force is lost and form a gap with the bearing inner ring retaining ring.
[0006] In some embodiments, the number of the adjusting member is one, and the operating port is located below the rotating shaft and the coupling; and / or,
[0007] The adjusting member is threadedly connected to the bearing outer ring gland.
[0008] In some embodiments, the bearing outer ring pressure cover is provided with a mounting groove, and the mounting groove is provided with the locking ring; the bearing outer ring pressure cover is provided with a mounting structure, and the mounting structure is provided with the adjusting member, and the mounting structure is connected to the mounting groove.
[0009] In some embodiments, the locking ring is provided with a force transmission boss, and the force transmission boss is used to drive the locking ring to shrink and lock the bearing inner ring retaining ring under the action of the adjusting member.
[0010] In some embodiments, the locking ring is an open elastic ring separated at both ends to form an opening, and the end of the open elastic ring is provided with a guide lug; the bearing outer ring pressure cover is provided with a pair of positioning grooves, and the positioning grooves cooperate with the guide lugs.
[0011] In some embodiments, the positioning groove is a water drop-shaped groove; a pair of guide lugs are symmetrically arranged on the upper side of the locking ring, and the force transmission boss is arranged on the lower side of the locking ring.
[0012] In some embodiments, the guide lug is provided with a process through hole.
[0013] In some embodiments, the bearing inner ring retaining ring is provided with an annular groove, and the annular groove is used to cooperate with the locking ring after the locking ring is shrunk.
[0014] In some embodiments, the adjusting member is built into the bearing outer ring gland; and / or,
[0015] There are multiple adjusting members, and the multiple adjusting members are distributed along the circumference of the bearing outer ring pressure cover.
[0016] The present application also provides a motor, comprising an end cover, a bearing, a rotating shaft, a coupling and the above-mentioned motor rotor locking structure, wherein in the radial direction, the bearing and the motor rotor locking structure are arranged between the end cover and the rotating shaft, and in the axial direction, the motor rotor locking structure is arranged between the bearing and the coupling.
[0017] Compared with the above-mentioned background technology, the motor rotor locking structure provided in the present application is integrated in the motor, and the motor is provided with an end cover, a bearing, a rotating shaft and a coupling. The motor rotor locking structure mainly includes a bearing outer ring pressure cover arranged on the end cover and a bearing inner ring retaining ring arranged on the rotating shaft. A locking ring is provided between the bearing outer ring pressure cover and the bearing inner ring retaining ring. The bearing outer ring pressure cover is provided with an adjusting piece. The locking ring is an elastic structure. The end cover is provided with an operating port. The adjusting piece is located in the operating port. The locking ring is contracted by adjusting the adjusting piece to lock the bearing inner ring retaining ring. The locking ring is used to expand when the external force is lost and form a gap with the bearing inner ring retaining ring.
[0018] In the existing motor transportation protection technology, external tooling is usually used to limit the movement of the rotor. These methods are not only complicated to operate, but also have poor versatility and are difficult to adapt to motor rotors of different specifications, resulting in poor results in practical applications. In addition, since there is still a risk of displacement of the rotor during transportation, this may not only cause damage to the rotor itself, but also have an adverse effect on the bearings, thereby affecting the safety and stability of the entire motor.
[0019] In view of these technical defects, the motor rotor locking structure provided in this application effectively solves the above problems through an innovative design integrated into the motor. The locking structure mainly includes a bearing outer ring gland, a bearing inner ring retaining ring and an elastic locking ring, as well as an adjusting member for adjusting the locking ring.
[0020] The advantage of this design is that by integrating the locking structure directly into the end cover and shaft of the motor, no additional external tooling is required, the operation process is simplified, and the requirements for operating space are reduced. The application of the elastic locking ring allows the displacement of the rotor to be effectively limited during transportation, thereby protecting the bearing from damage. The adjustment piece is located in the operating port of the end cover, making the contraction operation of the locking ring simple and quick, without the need for complex tools or steps, reducing the difficulty of operation and time cost. When the external force is lost, the elastic locking ring can automatically expand to form a gap with the inner ring retaining ring of the bearing, ensuring that the rotor has appropriate space for movement during normal operation of the motor without affecting the performance of the motor.
[0021] In combination with the above structure and process description, it can be seen that the motor rotor locking structure has at least the following beneficial effects: the motor rotor locking structure is integrated into the locking structure of the motor, and utilizes the cooperation of the elastic locking ring and the adjusting part to achieve stable locking and simple operation of the motor rotor during transportation, effectively solving the rotor displacement risk and operation complexity problems in the prior art, and improving the transportation safety and reliability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0023] FIG1 is a cross-sectional view of a motor rotor locking structure provided in an embodiment of the present application;
[0024] FIG2 is a schematic diagram of a motor rotor locking structure provided in an embodiment of the present application;
[0025] FIG3 is a schematic diagram of AA in FIG1 ;
[0026] FIG4 is a partial view of M of FIG1 ;
[0027] FIG5 is a schematic diagram of a bearing outer ring gland provided in an embodiment of the present application;
[0028] FIG6 is a schematic diagram of HH in FIG5 ;
[0029] FIG7 is a schematic diagram of a bearing inner ring retaining ring provided in an embodiment of the present application;
[0030] FIG8 is a schematic diagram of a locking ring provided in an embodiment of the present application;
[0031] FIG9 is a dimensional diagram of a locking ring provided in an embodiment of the present application;
[0032] FIG10 is a schematic diagram of a motor rotor locking structure provided by another embodiment of the present application;
[0033] FIG11 is a cross-sectional view of a motor rotor locking structure provided in another embodiment of the present application;
[0034] FIG. 12 is a schematic diagram of a locking ring provided in another embodiment of the present application.
[0035] in:
[0036] End cover 1, operating port 11, bearing outer ring pressure cover 2, installation groove 21, installation structure 22, positioning slide groove 23, bearing inner ring retaining ring 3, annular groove 31, rotating shaft 4, locking ring 5, force transmission boss 51, guide lug 52, process through hole 521, adjusting part 6, coupling 7, bearing 8. DETAILED DESCRIPTION
[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0038] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0039] Please refer to Figures 1 to 4, wherein Figure 1 is a cross-sectional view of the motor rotor locking structure provided in an embodiment of the present application, Figure 2 is a schematic diagram of the motor rotor locking structure provided in an embodiment of the present application, Figure 3 is an AA schematic diagram of Figure 1, and Figure 4 is a partial view of M of Figure 1.
[0040] In the first specific embodiment, the motor rotor locking structure provided in the implementation scheme of the present application is integrated into the motor, and the motor is provided with an end cover 1, a bearing 8, a rotating shaft 4 and a coupling 7. The rotating shaft 4 extends out from the end cover 1 and is connected to the coupling 7. The bearing 8 is located in the end cover 1 and is sleeved on the rotating shaft 4. The end cover 1 is a stationary component, and the bearing 8 supports the rotating shaft 4. The rotating shaft 4 and the coupling 7 are rotating components and can be regarded as the rotor of the motor.
[0041] The motor rotor locking structure mainly includes a bearing outer ring pressure cover 2 arranged on the end cover 1 and a bearing inner ring retaining ring 3 arranged on the rotating shaft 4. The bearing outer ring pressure cover 2 is a stationary component, and the bearing inner ring retaining ring 3 is a rotating component.
[0042] A locking ring 5 is provided between the bearing outer ring gland 2 and the bearing inner ring retaining ring 3. The bearing outer ring gland 2 is provided with an adjusting member 6. The locking ring 5 is an elastic structure. The end cover 1 is provided with an operating port 11. The adjusting member 6 is located in the operating port 11. The locking ring 5 is contracted by adjusting the adjusting member 6 to lock the bearing inner ring retaining ring 3, thereby locking the rotor of the motor. The locking ring 5 temporarily replaces the supporting function of the bearing, so that the bearing force is zero, thereby achieving the purpose of protecting the bearing. In addition, by adjusting the adjusting member 6, the locking ring 5 is spontaneously elastically expanded when the external force is lost, and a gap is formed between the locking ring 5 and the bearing inner ring retaining ring 3. The rotor of the motor can work normally without being disturbed by the locking ring 5.
[0043] In the existing motor transportation protection technology, external tooling is usually used to limit the movement of the rotor. These methods are not only complicated to operate, but also have poor versatility and are difficult to adapt to motor rotors of different specifications, resulting in poor results in practical applications. In addition, since there is still a risk of displacement of the rotor during transportation, this may not only cause damage to the rotor itself, but also have an adverse effect on the bearing 8, thereby affecting the safety and stability of the entire motor.
[0044] In view of these technical defects, the motor rotor locking structure provided in the present application effectively solves the above problems through an innovative design integrated into the motor. The locking structure mainly includes a bearing outer ring gland 2, a bearing inner ring retaining ring 3 and an elastic locking ring 5, and an adjusting member 6 for adjusting the locking ring 5.
[0045] The advantage of this design is that by integrating the locking structure directly into the end cover 1 and the rotating shaft 4 of the motor, no additional external tooling is required, the operation process is simplified, and the requirements for operating space are reduced. The application of the elastic locking ring 5 allows the displacement of the rotor to be effectively limited during transportation, thereby protecting the bearing 8 from damage. The adjustment member 6 is located in the operating port 11 of the end cover 1, making the contraction operation of the locking ring 5 simple and quick, without the need for complex tools or steps, reducing the difficulty of operation and time cost. When the external force is lost, the elastic locking ring 5 can automatically expand to form a gap with the inner ring retaining ring 3 of the bearing, ensuring that the rotor has appropriate space for movement during normal operation of the motor without affecting the performance of the motor.
[0046] In combination with the above structure and process description, it can be seen that the motor rotor locking structure has at least the following beneficial effects: the motor rotor locking structure is integrated into the locking structure of the motor, and utilizes the cooperation of the elastic locking ring 5 and the adjusting member 6 to achieve stable locking and simple operation of the motor rotor during transportation, effectively solving the rotor displacement risk and operation complexity problems in the prior art, and improving the transportation safety and reliability of the motor.
[0047] Taking the traction motor as an example, since the motor rotor locking structure is part of the structure of the traction motor product, it not only saves separate transportation protection tooling, but also eliminates the management issues of recycling and reuse, and has a great cost advantage.
[0048] Please continue to refer to FIG. 3 . In some embodiments, the number of the adjusting member 6 is one, and the operating port 11 is located below the rotating shaft 4 and the coupling 7 .
[0049] In this embodiment, the function of locking the rotor and protecting the bearing can be achieved by simply adjusting an adjusting member 6. This design utilizes the direct effect of the adjusting member 6 on the elastic locking ring 5. By adjusting the adjusting member 6, the locking ring 5 can be lifted while the radial tightening of the locking ring 5 is utilized to lock the rotor, thereby achieving stable locking of the rotor. This locking mechanism not only ensures the stability of the rotor during transportation, but also protects the bearing 8 and prevents damage that may be caused by rotor displacement.
[0050] In addition, this design also allows the locking structure to be quickly adjusted through a single operating port 11 without adding additional complexity. This simple operation makes the locking and releasing of the motor rotor fast and efficient, greatly reducing the operation time and improving the efficiency of maintenance work. At the same time, this design also helps to reduce the technical requirements for operators, allowing more people to easily perform the locking operation of the motor rotor, thereby improving the user-friendliness of the entire system.
[0051] In some embodiments, the adjusting member 6 is threadedly connected to the bearing outer ring gland 2 .
[0052] In this embodiment, the adjusting member 6 is in the form of a locking screw and is connected to the bearing outer ring gland 2 by a threaded connection. This threaded connection design allows the adjusting member 6 to adjust the position and state of the locking ring 5 by a screwing action, thereby achieving precise locking of the rotor.
[0053] The threaded adjustment member 6 can provide a stable and predictable locking force. By controlling the torque of the locking screw, the operator can accurately adjust the compression force of the locking ring 5 on the bearing inner ring retaining ring 3 to ensure that the rotor can remain stable under various transportation conditions. In addition, the threaded connection has the advantages of simple structure, high reliability, and easy disassembly and maintenance.
[0054] Please refer to Figures 5 and 6, Figure 5 is a schematic diagram of the bearing outer ring cover provided in an embodiment of the present application, and Figure 6 is a schematic diagram of HH in Figure 5.
[0055] In some embodiments, the bearing outer ring cover 2 is provided with an installation groove 21, and the installation groove 21 is provided with a locking ring 5; the bearing outer ring cover 2 is provided with a mounting structure 22, and the mounting structure 22 is provided with an adjusting member 6, and the mounting structure 22 is connected to the mounting groove 21.
[0056] In this embodiment, the bearing outer ring gland 2 is designed with an installation groove 21, which is mainly used to accommodate the locking ring 5. Such a design allows the locking ring 5 to elastically expand and contract freely in the installation groove 21 without interfering with other components, ensuring that the locking ring 5 can smoothly perform its locking and releasing functions.
[0057] At the same time, the bearing outer ring gland 2 is also provided with a mounting structure 22, which is specifically used to mount the adjusting member 6. When the adjusting member 6 adopts a locking screw, the mounting structure 22 includes a mounting sink and a threaded hole corresponding thereto. The mounting sink provides a stable platform, so that the locking screw (adjusting member 6) can be firmly screwed thereon, and the threaded hole is used to guide the locking screw to smoothly enter and be fixed in the correct position.
[0058] The mounting structure 22 is connected to the mounting groove 21, which means that the adjusting member 6 can directly affect the locking ring 5 installed in the mounting groove 21. By rotating the adjusting member 6, the operator can easily compress or release the locking ring 5, thereby locking and unlocking the rotor.
[0059] The advantage of this design is that it provides a simple and effective way to adjust the tension of the locking ring 5, thereby controlling the locking state of the rotor. At the same time, by integrating the mounting positions of the adjusting member 6 and the locking ring 5 on the bearing outer ring gland 2, no additional fixing structure is required, which helps to reduce the number of components, simplify the assembly process, and improve the compactness and reliability of the entire locking structure.
[0060] Please refer to FIG. 7 , which is a schematic diagram of a bearing inner ring retaining ring provided in an embodiment of the present application.
[0061] In some embodiments, the bearing inner ring retaining ring 3 is provided with an annular groove 31, and the annular groove 31 is used to cooperate with the locking ring 5 after the locking ring 5 is shrunk.
[0062] In this embodiment, the bearing inner ring retaining ring 3 is designed to have an annular groove 31. The main function of the annular groove 31 is to cooperate with the locking ring 5 after the locking ring 5 is contracted. The design of the annular groove 31 ensures that the locking ring 5 can contact with the bearing inner ring retaining ring 3 throughout the entire circumference during the contraction process, thereby achieving uniform and stable force.
[0063] This full-circle contact design is critical because it means that the pressure of the locking ring 5 on the bearing inner ring retaining ring 3 is evenly distributed during locking, avoiding damage or deformation caused by excessive local force. Uniform force not only improves the reliability of locking, but also makes the fit between the locking ring 5 and the bearing inner ring retaining ring 3 more stable, reducing the risk of displacement due to vibration or impact during transportation.
[0064] Please refer to Figures 8 and 9, Figure 8 is a schematic diagram of the locking ring provided in an embodiment of the present application, and Figure 9 is a dimensional diagram of the locking ring provided in an embodiment of the present application.
[0065] In some embodiments, the locking ring 5 is provided with a force transmission boss 51 , and the force transmission boss 51 is used to drive the locking ring 5 to contract and lock the bearing inner ring retaining ring 3 under the action of the adjusting member 6 .
[0066] In this embodiment, the locking ring 5 is designed to have a structure with a force transmission boss 51. The core function of the force transmission boss 51 is to provide a direct force transmission point under the action of the adjustment member 6, such as a locking screw, so that the locking ring 5 can shrink evenly and effectively, thereby achieving the locking of the bearing inner ring retaining ring 3.
[0067] The design of the force transmission boss 51 allows the force of the adjustment member 6 to be directly converted into the movement of the locking ring 5, thereby achieving precise control of the contraction degree of the locking ring 5 under the combined action of the installation groove 21. This direct force transmission method improves the response speed and locking accuracy of the locking structure, ensuring that the locking ring 5 can quickly and accurately reach the desired locking state.
[0068] In addition, the presence of the force transmission boss 51 also helps to improve the reliability of the locking structure. During the contraction of the locking ring 5, the force transmission boss 51 can ensure uniform distribution of the locking force, avoid stress concentration, and reduce the risk of damage to the locking ring 5 or the bearing inner ring retaining ring 3.
[0069] Please continue to refer to Figures 8 and 9. In some embodiments, the locking ring 5 is an open elastic ring separated at both ends to form an opening, and a guide lug 52 is provided at the end of the open elastic ring; the bearing outer ring cover 2 is provided with a pair of positioning grooves 23, and the positioning grooves 23 cooperate with the guide lugs 52.
[0070] In this embodiment, the locking ring 5 is designed as an open elastic ring with two ends separated and having an opening. This design makes the locking ring 5 easy to install and adjust, and at the same time provides the necessary elasticity so that it can adapt to different working environments and conditions. The ends of the open elastic ring are provided with guide lugs 52, which play a key role in the installation and adjustment process of the locking ring 5.
[0071] The bearing outer ring gland 2 is correspondingly provided with a pair of positioning grooves 23, which are used in conjunction with the guide lugs 52. The design of the positioning grooves 23 ensures that the guide lugs 52 can be accurately positioned at a predetermined position, thereby ensuring the correct installation and stable operation of the locking ring 5. This matching relationship not only improves the accuracy of the installation of the locking ring 5, but also helps to ensure that the locking ring 5 can evenly contact the bearing inner ring retaining ring 3 when subjected to force, thereby achieving effective locking.
[0072] In addition, the cooperation between the positioning slot 23 and the guide lug 52 also helps to simplify the assembly process, because this design allows the locking ring 5 to slide freely to the correct position on the bearing outer ring cover 2 without the need for complex alignment or adjustment steps. This design also helps to improve the reliability and durability of the entire locking structure, because it reduces the possible deviation or misalignment of the locking ring 5 during operation.
[0073] In some embodiments, the positioning groove 23 is a teardrop-shaped groove; a pair of guide lugs 52 are symmetrically arranged on the upper side of the locking ring 5 , and the force transmission boss 51 is arranged on the lower side of the locking ring 5 .
[0074] In this embodiment, the positioning groove 23 is designed as a water drop-shaped groove, which helps the guide lugs 52 to slide smoothly and perform contraction movement therein. A pair of guide lugs 52 of the locking ring 5 are symmetrically arranged on its upper side, and cooperate with the positioning grooves 23 in the bearing outer ring gland 2 to ensure that the locking ring 5 can stably move along a predetermined trajectory. The force transmission boss 51 is located on the lower side of the locking ring 5. When the adjustment member 6, such as a locking screw, acts on the force transmission boss 51, the locking ring 5 can be uniformly contracted, thereby effectively locking the bearing inner ring retaining ring 3.
[0075] This design allows the locking ring 5 to slide smoothly in the positioning slot 23 during operation while maintaining symmetrical balance, ensuring uniform distribution of the locking force. The synergistic effect of the force transmission boss 51 and the guide lug 52 makes the adjustment of the locking ring 5 more precise and controllable, improving the stability and reliability of the entire locking structure. In addition, since the locking ring 5 can slide freely in the positioning slot 23, it can automatically expand when the external force is lost, forming the necessary gap with the bearing inner ring retaining ring 3 to ensure the normal operation of the motor rotor.
[0076] In some embodiments, the guide lug 52 is provided with a process through hole 521 .
[0077] In this embodiment, considering the convenience of maintenance and replacement, the design of the process through hole 521 allows the locking ring 5 to be easily installed and removed from the installation groove 21 by tools such as circlip pliers. This design significantly improves the efficiency of maintenance operations, because the circlip pliers can firmly grasp the locking ring 5, allowing operators to quickly and safely complete the installation or removal process without complicated tools or multiple steps.
[0078] Optionally, the annular groove 31 is a V-shaped groove.
[0079] Please refer to Figures 10 to 12, Figure 10 is a schematic diagram of a motor rotor locking structure provided in another embodiment of the present application, Figure 11 is a cross-sectional view of a motor rotor locking structure provided in another embodiment of the present application, and Figure 12 is a schematic diagram of a locking ring provided in another embodiment of the present application.
[0080] In some embodiments, the adjusting member 6 is built into the bearing outer ring pressure cover 2 .
[0081] In this embodiment, the adjusting member 6 is designed to be built into the bearing outer ring gland 2. When the adjusting member 6 is in the form of a locking screw, this built-in design not only provides a more compact layout, but also eliminates the risk of the locking screw falling off under vibration or impact. The built-in locking screw is directly connected to the structure of the bearing outer ring gland 2, so it can perform its function more stably and safely without worrying about displacement or loss caused by external factors.
[0082] In addition, the built-in adjustment member 6 also helps to improve the neatness and aesthetics of the entire locking structure, because all components are cleverly hidden inside the bearing outer ring gland 2. This design also simplifies external maintenance work, because all key adjustment components are easily accessible from the inside without disassembling the external structure.
[0083] In some embodiments, there are multiple adjusting members 6 , and the multiple adjusting members 6 are distributed along the circumference of the bearing outer ring pressure cover 2 .
[0084] In this embodiment, in order to provide a more uniform locking force and a more flexible adjustment capability, a plurality of adjusting members 6 are designed, which are distributed along the circumference of the bearing outer ring gland 2. This design allows the locking ring 5 to be more evenly stressed, because each adjusting member 6 can independently apply pressure to the locking ring 5, thereby improving the overall stability and reliability of the locking structure.
[0085] In addition, the locking ring 5 is improved into a circular cross-section elastic locking ring in this solution. This structure is simpler and more compact, and requires less design space. The circular cross-section elastic locking ring uses its elastic deformation to easily switch between the working state and the locking state, making the operation process easier. Since the entire circumference of the locking ring 5 is more easily subjected to uniform force, this design also helps to reduce the risk of damage caused by uneven local force.
[0086] Optionally, the annular groove 31 is a combined groove with a guiding slope.
[0087] The present application also provides a motor, including an end cover 1, a bearing 8, a rotating shaft 4, a coupling 7 and the above-mentioned motor rotor locking structure. In the radial direction, the bearing 8 and the motor rotor locking structure are arranged between the end cover 1 and the rotating shaft 4, and in the axial direction, the motor rotor locking structure is arranged between the bearing 8 and the coupling 7.
[0088] The motor includes the above motor rotor locking structure and should have all the beneficial effects of the above motor rotor locking structure.
[0089] When in use, the bearing outer ring pressure cover 2 is installed and fixed on the end cover 1 by bolts, and the bearing outer ring pressure cover 2 is a stationary component; the bearing inner ring retaining ring 3 is fixed on the rotating shaft 4, the rotating shaft 4 is connected to the coupling 7, and the bearing inner ring retaining ring 3 is a rotating component.
[0090] The locking ring 5 is stuck in the installation groove 21 of the bearing outer ring pressure cover 2, and the locking ring 5 contacts the annular groove 31 of the bearing inner ring retaining ring 3 through a locking screw at the bottom, thereby achieving the function of transporting and locking the motor rotor. Specific locking process: operate the locking screw in the recessed space of the operating port 11 below the end cover 1, and when tightening, press the force transmission boss 51 at the bottom of the locking ring 5. At this time, the two guide lugs 52 at the upper end of the locking ring 5 slide and shrink and deform in the positioning groove 23 of the bearing outer ring pressure cover 2. When a certain tightening torque is reached, the locking ring 5 is fully in contact with the annular groove 31 of the bearing inner ring retaining ring 3, and the rotor is lifted and locked under the support and limiting action of the installation groove 21 of the bearing outer ring pressure cover 2, realizing the locking function; when the locking screw is loosened, the locking ring 5 slides in the installation groove 21 of the bearing outer ring pressure cover 2 and restores the deformation. Finally, the inner diameter of the locking ring 5 and the bearing inner ring retaining ring 3 have a matching clearance of △, maintaining a normal running clearance.
[0091] The locking ring 5 is an open elastic ring, which can be installed in the mounting groove 21 of the bearing outer ring cover 2 by its own elasticity. The diameter D of the mounting groove 21 matches the outer diameter r1 of the locking ring 5. The radial distance L1 from the guide lug 52 on the locking ring 5 to the center of the locking ring 5 is greater than the radial distance L2 from the positioning groove 23 on the bearing outer ring cover 2 to the center of the bearing outer ring cover 2.
[0092] The open elastic ring is an elastic structure with radial dimension gradient composed of arcs with different inner and outer concentricities, wherein the eccentricity e1 is selected and determined according to the locking force requirement. The guide lug 52 at the opening is a semicircular lug with a radius of r6, and the teardrop-shaped groove (positioning slide groove 23) of the bearing outer ring gland 2 matches the shape of this lug. There is a process through hole 521 for installation on the semicircle, and the hole diameter is φB. The locking ring 5 can be easily installed into the installation groove 21 or disassembled from the installation groove 21 by using circlip pliers.
[0093] There are two teardrop-shaped grooves above the mounting groove 21 of the outer ring gland 2 of the bearing. When the clamp-type locking ring (locking ring 5) is installed, the semicircular lug with a radius of r6 falls into the teardrop-shaped groove, so that the locking ring 5 can slide and shrink inside. The axial width of the mounting groove 21 of the outer ring gland 2 of the bearing is H, which matches the thickness h of the locking ring 5. The force transmission boss 51 directly below the locking ring 5 is an outer circle protrusion with a radius of r2. The position of this force transmission boss 51 corresponds to the threaded hole on the outer ring gland 2 of the bearing. When the locking bolt is tightened, it acts on this force transmission boss 51, causing the locking ring 5 to deform and shrink, and enter the mounting groove 21 of the inner ring retaining ring 3 of the bearing to lock the rotor; when the appropriate L1 and L2 are selected, there is an appropriate radial elastic pressure between the locking ring 5 and the teardrop-shaped groove, thereby ensuring that the locking ring 5 is in contact and positioned with the mounting groove 21 of the outer ring gland 2 of the bearing.
[0094] In a specific implementation, for the product operating state, there is a matching clearance of △ between the inner diameter of the locking ring 5 and the inner ring retaining ring 3 of the bearing. When the locking screw is loosened, a normal operating clearance is maintained to ensure normal operation of the bearing.
[0095] For the transport locking state, the locking screw is used to tighten the force transmission boss 51 at the bottom of the locking ring 5 to achieve the contraction of the locking ring 5 until it forms mechanical contact with the annular groove 31 of the bearing inner ring retaining ring 3, supporting the rotor to unload the load of the bearing, that is, the locking ring 5 temporarily replaces the supporting function of the bearing, making the bearing force zero, thereby achieving the purpose of protecting the bearing.
[0096] For switching between the product operation state and the transportation locking state, in the operation state, the locking screw is removed, the locking ring 5 elastically deforms to restore the original state, away from the annular groove 31 of the bearing inner ring retaining ring 3, and a labyrinth gap is formed between the two to achieve the operation state. To realize the transportation locking function, it is only necessary to tighten the locking screw to support the locking ring 5 and then lock the bearing inner ring retaining ring 3.
[0097] In a specific implementation, the motor rotor locking structure of the present application effectively improves the stability and safety of the motor during transportation through a carefully designed integrated solution. By directly integrating the locking device into key components of the motor, such as the end cover 1, the bearing outer ring gland 2, and the bearing inner ring retaining ring 3, additional tooling and parts replacement are eliminated, simplifying the overall maintenance and operation process. This design is not only highly related to the motor's own structure, but also is not limited by the mode of transportation. Whether it is a single motor or a whole vehicle transportation, it can provide stable locking protection.
[0098] The switching flexibility of the motor rotor locking structure enables the product to be easily switched between the operating state and the transport locking state, which is particularly suitable for environments with limited space, such as the tight space when the motor is connected to the coupling 7. The locking ring 5 is cleverly designed, and its elastic characteristics are used to temporarily replace the support function of the bearing during transportation, so that the force on the bearing is zero, which significantly improves the protection effect of the bearing compared to traditional transportation methods.
[0099] The open elastic design of the locking ring 5 not only simplifies the structure, but also reduces the required installation space, making the disassembly and assembly of the locking components quick and convenient. The design of the adjustment member 6 allows the locking and release of the rotor to be achieved by simply tightening or loosening the bolts, further improving the convenience of operation and the response speed of the locking structure.
[0100] It should be noted that many of the components mentioned in this application are universal standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or through conventional experimental methods.
[0101] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.
[0102] The motor rotor locking structure and the motor provided by the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.
Claims
1. A motor rotor locking structure, integrated in a motor, wherein the motor is provided with an end cover, a bearing, a rotating shaft and a coupling, characterized in that: The motor rotor locking structure includes a bearing outer ring pressure cover arranged on the end cover and a bearing inner ring retaining ring arranged on the rotating shaft, a locking ring is arranged between the bearing outer ring pressure cover and the bearing inner ring retaining ring, the bearing outer ring pressure cover is provided with an adjusting piece, the locking ring is an elastic structure, the end cover is provided with an operating port, the adjusting piece is located in the operating port, the locking ring is contracted by adjusting the adjusting piece to lock the bearing inner ring retaining ring, and the locking ring is used to expand when the external force is lost and form a gap with the bearing inner ring retaining ring.
2. The motor rotor locking structure according to claim 1, characterized in that: The number of the adjusting member is one, and the operating port is located below the rotating shaft and the coupling; and / or, The adjusting member is threadedly connected to the bearing outer ring gland.
3. The motor rotor locking structure according to claim 1, characterized in that: The bearing outer ring pressure cover is provided with a mounting groove, and the mounting groove is provided with the locking ring; the bearing outer ring pressure cover is provided with a mounting structure, and the mounting structure is provided with the adjusting member, and the mounting structure is communicated with the mounting groove.
4. The motor rotor locking structure according to claim 1, characterized in that: The locking ring is provided with a force transmission boss, and the force transmission boss is used to drive the locking ring to shrink and lock the bearing inner ring retaining ring under the action of the adjusting member.
5. The motor rotor locking structure according to claim 4, characterized in that: The locking ring is an open elastic ring with openings formed at both ends, and the ends of the open elastic ring are provided with guide lugs; the bearing outer ring pressure cover is provided with a pair of positioning grooves, and the positioning grooves cooperate with the guide lugs.
6. The motor rotor locking structure according to claim 5, characterized in that: The positioning groove is a water drop-shaped groove; a pair of guide lugs are symmetrically arranged on the upper side of the locking ring, and the force transmission boss is arranged on the lower side of the locking ring.
7. The motor rotor locking structure according to claim 5, characterized in that: The guide lug is provided with a process through hole.
8. The motor rotor locking structure according to claim 1, characterized in that: The bearing inner ring retaining ring is provided with an annular groove, and the annular groove is used to cooperate with the locking ring after the locking ring is shrunk.
9. The motor rotor locking structure according to claim 1, characterized in that: The adjusting member is built into the bearing outer ring gland; and / or, There are multiple adjusting members, and the multiple adjusting members are distributed along the circumference of the bearing outer ring pressure cover.
10. A motor, characterized in that: It comprises an end cover, a bearing, a rotating shaft, a coupling and a motor rotor locking structure as described in any one of claims 1 to 9, wherein in the radial direction, the bearing and the motor rotor locking structure are arranged between the end cover and the rotating shaft, and in the axial direction, the motor rotor locking structure is arranged between the bearing and the coupling.