Rotor entry end cap mechanism

Abstract

The application provides a rotor entry end cover mechanism, which comprises a fixed support, a jacking driving element, a press fitting driving element and a press fitting assembly. The fixed support comprises a first support plate, a second support plate and a stand. The first support plate is provided with a first positioning column for supporting an end cover assembly. The first positioning column has a first through hole. The jacking driving element is installed below the first support plate. The jacking driving element has a first lifting shaft. The press fitting driving element has a second lifting shaft. The press fitting assembly comprises a seat body and a second positioning column. The seat body is installed at the end of the second lifting shaft. The second positioning column is installed on the seat body. The rotating shaft is clamped between the second positioning column and the first lifting shaft. Both ends are supported simultaneously during the descending process, so as to avoid shaking in the suspended state. The second positioning column, the first lifting shaft and the first positioning column are coaxially arranged, the coaxiality of the rotor assembly and the end cover assembly is improved, and the eccentricity of the rotor device caused by insufficient coaxiality is avoided.

Description

Technical Field

[0001] This application belongs to the field of motor assembly, and more specifically, relates to a rotor inlet end cover mechanism. Background Technology

[0002] The motor has end covers. When assembling the end covers, the bearings need to be pressed into the end covers first, and then the rotor is assembled into the end covers with the bearings already pressed in.

[0003] In the prior art, referring to pages 0057 to 0069 of the specification of Chinese Patent CN222868725U, and Figures 10-12, the assembly mechanism includes a transfer assembly for transferring the end cover, a rotor mounting assembly for assembling the rotor into the end cover, and a load-bearing assembly for supporting the load during the assembly process. The rotor mounting assembly includes a pressing device, a transverse moving device, and a material-taking shaft. The transverse moving device is mounted at the output end of the pressing device, and the material-taking shaft is mounted at the output end of the transverse moving device, movably located beside the transfer assembly. The pressing device includes a press and a lifting slide. The lifting slide is mounted at the output end of the press, and the transverse moving device is mounted on the lifting slide. The transverse moving device includes a transverse moving cylinder and a transverse moving slide. The transverse moving cylinder is mounted on the lifting slide, and the transverse moving slide is mounted on the shaft end of the transverse moving cylinder. The material-taking shaft is mounted on the transverse moving slide. The material-taking shaft picks up the rotor, and the transverse movement device drives the material-taking shaft and the rotor to move transversely synchronously; the pressing device drives the material-taking shaft and the rotor to descend and then assembles the rotor into the end cover.

[0004] In other words, the existing rotor entry end cover mechanism uses a clamping device to lower the rotor assembly and press it into the end cover equipped with bearings. When the clamping device lowers the rotor assembly, the rotor assembly is suspended in the air, and the axis of the rotor assembly may swing, posing a technical problem that the coaxiality between the rotor assembly and the end cover needs to be improved. Utility Model Content

[0005] The purpose of this application is to provide a rotor entry end cover mechanism to solve the technical problem that the coaxiality between the rotor assembly and the end cover needs to be improved in the rotor entry end cover mechanism of the related technology.

[0006] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0007] A rotor inlet end cover mechanism is provided, comprising:

[0008] The fixed bracket includes a first support plate, a second support plate located above the first support plate, and a column connecting the first support plate and the second support plate. The first support plate is provided with a first positioning post, which is used to support the end cap assembly. The first positioning post has a first through hole.

[0009] A lifting drive component is installed below the first support plate. The lifting drive component has a first lifting shaft, which is vertically and vertically inserted into the first through hole. The first lifting shaft is coaxially arranged with the first positioning column.

[0010] A press-fitting drive component is installed above the second support plate, and the press-fitting drive component has a second lifting shaft;

[0011] The press-fitting assembly includes a base and a second positioning post. The base is mounted on the end of the second lifting shaft, and the second positioning post is mounted on the base. The second positioning post and the first lifting shaft are coaxially arranged.

[0012] In one embodiment, the end of the first lifting shaft has a first cone-shaped part, which is used to be fitted into the end of the rotating shaft.

[0013] In one embodiment, the end of the second positioning post has a second cone shape, which is used to be fitted into the end of the rotating shaft.

[0014] In one embodiment, the second positioning post is elastically mounted on the base.

[0015] In one embodiment, the press-fit assembly further includes a spring, the seat has a first mounting hole, the spring extends vertically, one end of the spring abuts against the bottom of the first mounting hole, and the other end of the spring is connected to the second positioning post.

[0016] In one embodiment, the second positioning post includes a first post segment and a second post segment connected to each other. The first post segment is located further away from the press-fitting drive member than the second post segment. The outer diameter of the first post segment is smaller than the diameter of the first mounting hole, and the outer diameter of the second post segment is larger than the diameter of the first mounting hole.

[0017] In one embodiment, the second positioning post further includes a third column segment connected to the end of the second column segment away from the first column segment. The outer diameter of the third column segment is smaller than the outer diameter of the second column segment. The spring is sleeved on the third column segment, and the inner diameter of the spring is smaller than the outer diameter of the second column segment.

[0018] In one embodiment, the base includes a first support block and a second support block. The first support block is installed at the end of the second lifting shaft and has a first mounting hole. The second support block is detachably installed at the bottom of the first support block and has a second mounting hole. The length direction of the second mounting hole is consistent with the length direction of the first mounting hole. The diameter of the second mounting hole is smaller than the diameter of the first mounting hole and larger than the outer diameter of the first column segment.

[0019] In one embodiment, a third positioning post is provided on the top of the first support plate, the third positioning post being used to position itself within the threaded hole of the end cap assembly.

[0020] In one embodiment, an airbag is installed at the end of the third positioning post, and the interior of the third positioning post has an air passage communicating with the airbag.

[0021] The rotor insertion end cap mechanism provided in this application embodiment has at least the following beneficial effects: the end cap assembly includes an end cap body and a first bearing embedded in the end cap body; the rotor assembly includes a rotating shaft and a magnet sleeved on the rotating shaft; the end cap assembly is placed on a first positioning post and is coaxially arranged with the first positioning post; the rotor assembly is fed between a second positioning post and a first lifting shaft; then, the second positioning post descends to the top of the rotating shaft under the drive of the pressing drive component; the first lifting shaft of the lifting drive component rises to the bottom of the rotating shaft; then, the first lifting shaft and the second lifting shaft descend synchronously, and the rotor assembly descends synchronously and is pressed into the end cap assembly located on the first positioning post; the first lifting shaft and the second positioning post of the lifting drive component both move in the vertical direction; the rotating shaft is clamped between the second positioning post and the first lifting shaft; both ends are supported simultaneously during the descent to avoid swaying in the suspended state; the second positioning post, the first lifting shaft, and the first positioning post are coaxially arranged, which improves the coaxiality between the rotor assembly and the end cap assembly and avoids the rotor device from becoming eccentric, generating centrifugal force, causing vibration and noise during operation due to insufficient coaxiality. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the rotor inlet cover mechanism provided in an embodiment of this application;

[0024] Figure 2This is a partial structural schematic diagram of the rotor inlet end cover mechanism provided in the embodiment;

[0025] Figure 3 for Figure 2 A schematic diagram of the structure after removing the end cover assembly and rotor assembly;

[0026] Figure 4 A schematic diagram of the press-fit assembly provided in the embodiment;

[0027] Figure 5 Exploded view of the press-fit assembly provided for the embodiment;

[0028] Figure 6 A schematic diagram of the spring and the second positioning post provided for the embodiment.

[0029] The main markings in the attached figures are as follows:

[0030] 10. End cap assembly; 11. End cap body; 12. First bearing; 13. Threaded hole; 20. Rotor assembly; 21. Shaft; 22. Magnet; 23. Second bearing;

[0031] 100. Fixed bracket; 110. First support plate; 111. Third positioning post; 112. Airbag; 120. Second support plate; 130. Column; 140. First positioning post; 141. First through hole;

[0032] 200, Lifting drive component; 210, First lifting shaft; 211, First conical body;

[0033] 300. Press-fit drive component; 310. Second lifting shaft;

[0034] 400. Press-fit assembly; 410. Base; 411. First mounting hole; 412. First support block; 413. Second support block; 414. Protective sleeve; 415. Second mounting hole; 420. Second positioning post; 421. Second cone; 422. First column section; 423. Second column section; 424. Third column section; 430. Spring. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly specified. "Several" means one or more, unless otherwise expressly specified.

[0038] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrase "in one embodiment" or "in some embodiments" appears in various places throughout the specification, and not all references are to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0041] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4The rotor inlet end cover mechanism provided in the embodiments of this application will now be described. The rotor inlet end cover mechanism includes a fixed bracket 100, a lifting drive 200, a pressing drive 300, and a pressing assembly 400. The fixed bracket 100 includes a first support plate 110, a second support plate 120 located above the first support plate 110, and a column 130 connecting the first support plate 110 and the second support plate 120. The first support plate 110 is provided with a first positioning post 140, which is used to support the end cover assembly 10. The first positioning post 140 has a first through hole 141.

[0042] The lifting drive component 200 is installed below the first support plate 110. The lifting drive component 200 has a first lifting shaft 210, which is vertically inserted into the first through hole 141. The first lifting shaft 210 is coaxially arranged with the first positioning post 140.

[0043] The press-fitting drive component 300 is mounted above the second support plate 120, and the press-fitting drive component 300 has a second lifting shaft 310. The press-fitting assembly 400 includes a base 410 and a second positioning post 420. The base 410 is mounted at the end of the second lifting shaft 310, and the second positioning post 420 is mounted on the base 410. The second positioning post 420 and the first lifting shaft 210 are coaxially arranged.

[0044] The end cap assembly 10 includes an end cap body 11 and a first bearing 12 embedded within the end cap body 11. The rotor assembly 20 includes a rotating shaft 21 and a magnet 22 sleeved on the rotating shaft 21. Optionally, the rotor assembly 20 further includes a second bearing 23, which is sleeved on one end of the rotating shaft 21. The other end of the rotating shaft 21 is used to be sleeved within the first bearing 12 of the end cap assembly 10, thereby assembling the end cap assembly 10 and the rotor assembly 20.

[0045] In this embodiment, the end cap assembly 10 is placed on the first positioning post 140 and is coaxially arranged with the first positioning post 140. The rotor assembly 20 is automatically fed by a robot or manually fed by a person to the space between the second positioning post 420 and the first lifting shaft 210. Then, the second positioning post 420 is lowered to the top of the rotating shaft 21 under the drive of the pressing drive 300. The first lifting shaft 210 of the lifting drive 200 rises and abuts the bottom of the rotating shaft 21, clamping and fixing the rotating shaft 21. The material transfer robot or the feeding worker leaves, and the rotor assembly 20 is not clamped around it. Then, the first lifting shaft 210 and the second lifting shaft 310 descend synchronously, and the rotor assembly 20 descends synchronously and is pressed into the end cover assembly 10 located in the first positioning post 140. The first lifting shaft 210 and the second positioning post 420 of the lifting drive 200 both move in the vertical direction. The rotating shaft 21 is clamped between the second positioning post 420 and the first lifting shaft 210. During the descent, both ends are supported at the same time to avoid swaying in the suspended state. The second positioning post 420, the first lifting shaft 210 and the first positioning post 140 are coaxially arranged, which improves the coaxiality between the rotor assembly 20 and the end cover assembly 10 and avoids the rotor device from being eccentric, generating centrifugal force during operation, and causing vibration and noise due to insufficient coaxiality.

[0046] Specifically, the first positioning post 140 is a cylindrical column, the first through hole 141 is a cylindrical hole, and the first positioning post 140 and the first through hole 141 are coaxially arranged.

[0047] In one embodiment, see Figure 2 and Figure 3 As a specific embodiment of the rotor inlet end cover mechanism provided in this application, the end of the first lifting shaft 210 has a first conical body 211, which is used to be embedded in the end of the rotating shaft 21. The first conical body 211 and the concave hole at the end of the rotating shaft 21 form a line contact guide, further preventing axial movement or circumferential swing at the end of the rotating shaft 21.

[0048] In one embodiment, see Figure 4 and Figure 5 As a specific embodiment of the rotor inlet end cover mechanism provided in this application, the end of the second positioning post 420 has a second cone 421, which is used to be embedded in the end of the rotating shaft 21. The second cone 421 forms a line contact guide with the concave hole at the end of the rotating shaft 21, further preventing axial movement or circumferential swing at the end of the rotating shaft 21.

[0049] In one embodiment, see Figure 4 and Figure 5As a specific embodiment of the rotor inlet end cap mechanism provided in this application, the second positioning post 420 is elastically mounted on the base 410. When the second positioning post 420 contacts the rotating shaft 21, it can absorb the initial impact energy through elastic mounting, avoiding damage to the end face of the rotating shaft 21 or positional displacement caused by rigid mounting. The elastic mounting ensures that the second positioning post 420 and the top of the rotating shaft 21 always maintain stable contact, continuously providing axial support force to the rotating shaft 21 and preventing the top of the rotating shaft 21 from separating from the second positioning post 420. The elastic mounting ensures that the second positioning post 420 and the top of the rotating shaft 21 always maintain contact, and even when the speed of the press-fit drive component 300 fluctuates or vibrates, it can prevent the rotating shaft 21 from shaking due to momentary disengagement.

[0050] In one embodiment, see Figure 5 and Figure 6 As a specific embodiment of the rotor inlet end cap mechanism provided in this application, the press-fit assembly 400 further includes a spring 430. The base 410 has a first mounting hole 411, the spring 430 extends vertically, one end of the spring 430 abuts against the bottom of the first mounting hole 411, and the other end of the spring 430 is connected to a second positioning post 420. The damping characteristics of the spring 430 can absorb high-frequency vibrations during the press-fitting process, making the press-fitting force curve smoother and the press-fitting more stable. The abutting relationship between the spring 430 and the first mounting hole 411 eliminates the need to connect the spring 430 to the base 410, simplifying the assembly of the press-fitting assembly 400.

[0051] In one embodiment, see Figure 5 and Figure 6 As a specific embodiment of the rotor inlet end cover mechanism provided in this application, the second positioning post 420 includes a first post segment 422 and a second post segment 423 connected to each other. The first post segment 422 is positioned further away from the press-fitting drive member 300 than the second post segment 423. The outer diameter of the first post segment 422 is smaller than the diameter of the first mounting hole 411, and the outer diameter of the second post segment 423 is larger than the diameter of the first mounting hole 411. Based on this, the first post segment 422 can protrude from the first mounting hole 411 and abut against the end of the rotating shaft 21, while the second post segment 423 cannot pass through the first mounting hole 411, thus preventing the second positioning post 420 from falling off the seat 410. At the same time, the maximum elongation of the second positioning post 420 extending out of the first mounting hole 411 is limited, preventing excessive elongation that could cause the cantilever to be too long, bend, or shift axially.

[0052] Optionally, the outer diameter of the first column segment 422 is 80% to 90% of the diameter of the first mounting hole 411. The first mounting hole 411 serves as a guide.

[0053] Optionally, the outer diameter of the second column segment 423 is 110% to 200% of the diameter of the first mounting hole 411.

[0054] In one embodiment, see Figure 5 and Figure 6 As a specific embodiment of the rotor inlet end cover mechanism provided in this application, the second positioning post 420 further includes a third post segment 424. The third post segment 424 is connected to the end of the second post segment 423 away from the first post segment 422. The outer diameter of the third post segment 424 is smaller than the outer diameter of the second post segment 423. The spring 430 is sleeved on the third post segment 424. The third post segment 424 provides precise radial positioning for the spring 430, preventing the spring 430 from bending laterally or becoming unstable during compression.

[0055] The inner diameter of the spring 430 is smaller than the outer diameter of the second column 423, forming a physical limit to prevent the spring 430 from popping out or getting tangled during compression, which is especially effective in high-frequency reciprocating motion.

[0056] Optionally, the outer diameter of the spring 430 is the same as the outer diameter of the second column 423, so that the second column 423 supports the spring 430 with the maximum area, while ensuring that the outer diameter and volume of the second column 423 are minimized.

[0057] In one embodiment, see Figure 4 and Figure 5 As a specific embodiment of the rotor inlet end cover mechanism provided in this application, the base 410 includes a first support block 412 and a second support block 413. The first support block 412 is installed at the end of the second lifting shaft 310 and has a first mounting hole 411. The second support block 413 is detachably installed at the bottom of the first support block 412 and has a second mounting hole 415. The length direction of the second mounting hole 415 is consistent with the length direction of the first mounting hole 411, i.e., coaxially arranged. The diameter of the second mounting hole 415 is smaller than the diameter of the first mounting hole 411, and the diameter of the second mounting hole 415 is larger than the outer diameter of the first column segment 422.

[0058] The second mounting hole 415 has a smaller diameter but is larger than the outer diameter of the first column segment 422, allowing the first column segment 422 to pass through and serving as a guide to ensure that the second positioning column 420 moves accurately in the vertical direction, avoiding tilting or offset, and ensuring coaxiality with the rotating shaft 21.

[0059] Optionally, the diameter of the second mounting hole 415 is 90% to 95% of the diameter of the first mounting hole 411.

[0060] In one embodiment, the base 410 further includes a protective sleeve 414, which is sleeved on the first support block 412 and the second support block 413, and the protective sleeve 414 is connected to the outer wall of the first support block 412.

[0061] In one embodiment, see Figure 2 and Figure 3 As a specific embodiment of the rotor inlet end cover mechanism provided in this application, a third positioning post 111 is provided on the top of the first support plate 110. The third positioning post 111 is used to position and embed itself in the threaded hole 13 of the end cover assembly 10. The third positioning post 111 is embedded in the threaded hole 13 of the end cover assembly 10 to realize the positioning and installation of the end cover body 11 and avoid the end cover body 11 and the end cover assembly 10 from shaking.

[0062] The third positioning post 111 has a step, which can restrict the downward movement of the end cap 11. The top of the third positioning post 111 can be used to restrict the upward movement of the end cap 11 through a detachable nut or other structural component, thereby fixing the position of the end cap assembly 10 in the vertical direction.

[0063] In one embodiment, see Figure 2 and Figure 3 As a specific embodiment of the rotor entry end cap mechanism provided in this application, an airbag 112 is installed at the end of the third positioning post 111, and the interior of the third positioning post 111 has an air passage communicating with the airbag 112. When the airbag 112 is not inflated, the outer diameter of the airbag 112 is smaller than the threaded hole 13 of the end cap body 11, and the end cap body 11 can be smoothly fitted into the third positioning post 111. Then, the airbag 112 is inflated, and the outer diameter of the top of the airbag 112 is larger than the diameter of the threaded hole 13, so that the airbag 112 and the third positioning post 111 cooperate to clamp and fix the end cap assembly 10.

[0064] Optionally, the bottom outer diameter of the airbag 112 expands to fit tightly against the inner wall of the threaded hole 13, forming uniform circumferential pressure to achieve flexible clamping. The airbag 112 conforms to the threaded hole 13 through air pressure deformation, avoiding direct friction between the rigid column and the thread and protecting the thread profile.

[0065] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0066] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rotor inlet end cover mechanism, characterized in that, The rotor inlet end cover mechanism includes: The fixed bracket includes a first support plate, a second support plate located above the first support plate, and a column connecting the first support plate and the second support plate. The first support plate is provided with a first positioning post, which is used to support the end cap assembly. The first positioning post has a first through hole. A lifting drive component is installed below the first support plate. The lifting drive component has a first lifting shaft, which is vertically and vertically inserted into the first through hole. The first lifting shaft is coaxially arranged with the first positioning column. A press-fitting drive component is installed above the second support plate, and the press-fitting drive component has a second lifting shaft; The press-fitting assembly includes a base and a second positioning post. The base is mounted on the end of the second lifting shaft, and the second positioning post is mounted on the base. The second positioning post and the first lifting shaft are coaxially arranged.

2. The rotor inlet end cover mechanism as described in claim 1, characterized in that: The end of the first lifting shaft has a first conical body, which is used to be fitted into the end of the rotating shaft.

3. The rotor inlet end cover mechanism as described in claim 1, characterized in that: The end of the second positioning post has a second cone shape, which is used to be fitted into the end of the rotating shaft.

4. The rotor inlet end cover mechanism as described in claim 1, characterized in that: The second positioning post is elastically mounted on the base.

5. The rotor inlet end cover mechanism as described in claim 4, characterized in that: The press-fit assembly also includes a spring, the base has a first mounting hole, the spring extends vertically, one end of the spring abuts against the bottom of the first mounting hole, and the other end of the spring is connected to the second positioning post.

6. The rotor inlet end cover mechanism as described in claim 5, characterized in that: The second positioning post includes a first column segment and a second column segment connected to each other. The first column segment is located further away from the press-fitting drive component than the second column segment. The outer diameter of the first column segment is smaller than the diameter of the first mounting hole, and the outer diameter of the second column segment is larger than the diameter of the first mounting hole.

7. The rotor inlet end cover mechanism as described in claim 6, characterized in that: The second positioning post further includes a third column segment, which is connected to the end of the second column segment away from the first column segment. The outer diameter of the third column segment is smaller than the outer diameter of the second column segment. The spring is sleeved on the third column segment, and the inner diameter of the spring is smaller than the outer diameter of the second column segment.

8. The rotor inlet end cover mechanism as described in claim 6, characterized in that: The base includes a first support block and a second support block. The first support block is installed at the end of the second lifting shaft and has a first mounting hole. The second support block is detachably installed at the bottom of the first support block and has a second mounting hole. The length direction of the second mounting hole is consistent with the length direction of the first mounting hole. The diameter of the second mounting hole is smaller than the diameter of the first mounting hole and larger than the outer diameter of the first column segment.

9. The rotor inlet end cover mechanism as described in any one of claims 1 to 8, characterized in that: The top of the first support plate is provided with a third positioning post, which is used to position and embed in the threaded hole of the end cap assembly.

10. The rotor inlet end cover mechanism as described in claim 9, characterized in that: An airbag is installed at the end of the third positioning post, and the interior of the third positioning post has an air passage that communicates with the airbag.

Images