Lamella conductive slip ring shafting loading method and device

Abstract

This invention provides a loading method and apparatus for a stacked conductive slip ring shaft system. The stacked conductive slip ring shaft system loading apparatus includes: an assembly base, a conductive slip ring locking nut, a support flange, a sleeve, a limiting strip, a conductive slip ring locking ring, a fixing flange, a loading fixture, and an assembly platform. The assembly steps and loading method are as follows: the assembly base is installed and fixed on the assembly platform; the support flange is installed to the bearing mounting end of the slip ring assembly; the conductive slip ring locking nut is tightened to the shaft end; the slip ring assembly is installed on the assembly base; then the sleeve, fixing flange, conductive slip ring locking ring, limiting strip, and loading fixture are installed; the unloading steps are reversed. Using this apparatus and method, the shaft system can be uniformly loaded in the vertical direction, improving the performance after the slip ring is assembled. Furthermore, this apparatus does not require disassembly and can achieve repeated unloading and loading of the slip ring assembly shaft system in situ.

Description

Technical Field

[0001] This invention belongs to the field of precision assembly technology of spatial conductive slip rings, specifically, it relates to a loading method and device for a stacked conductive slip ring shaft system. Background Technology

[0002] The ring assembly is a crucial component for the rotational electrical transmission in a conductive slip ring. It is formed by axially stacking and compressing a conductive ring and an insulating spacer. The assembly accuracy of the ring has a significant impact on the rotational electrical transmission performance of the conductive slip ring.

[0003] The ring assembly requires high shaft stiffness, necessitating the simultaneous measurement of shaft compression during ring assembly under constant force to calculate appropriate shaft stiffness. Currently used horizontal loading methods are unsuitable for applying large torques and for measuring shaft compression. Furthermore, the ring groove runout and vibration of the ring assembly shaft significantly impact electrical performance, contact stability, and product wear life. The commonly used horizontal loading method also results in uneven vertical force distribution on the shaft, leading to low performance and assembly precision in the assembled ring assembly.

[0004] Patent document CN116742428A provides a ring-slip shaft structure and a slip ring and rotary connector having the structure. Under different shaft preload and different insulating ring materials, the axial compression displacement is different. Moreover, the longer the shaft, the greater the cumulative error of its stacked assembly. It is impossible to accurately determine the position of the positioning groove on the support bar during the initial design. Furthermore, if the positioning groove position design deviates from the actual compression curve of the shaft, the positioning conductive ring boss may get stuck with the positioning groove under a certain preload, preventing further shaft compression. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a loading method and apparatus for a stacked conductive slip ring shaft system.

[0006] According to the present invention, a stacked conductive slip ring shaft loading device includes an assembly base, a conductive ring locking nut, a support flange, a sleeve, a limit strip, a conductive ring locking ring, a fixed flange, a loading fixture, and an assembly platform.

[0007] The assembly base is mounted on the assembly platform;

[0008] The conductive ring locking nut and the supporting flange are used to mount the ring assembly shaft system onto the assembly base;

[0009] The sleeve is installed on the outside of the annular assembly shaft system;

[0010] The limiting strip is installed on the sleeve and is used to control the radial movement of the annular assembly shaft system during loading.

[0011] The conductive ring locking ring is disposed at the upper shaft end of the ring body assembly;

[0012] The inner side of the fixed flange is positioned with the sleeve to form the loading shaft system of the ring assembly;

[0013] The loading fixture is installed on the conductive ring locking ring and is used to apply torque to the shaft system of the ring assembly.

[0014] The conductive ring locking nut and the conductive ring locking ring can be original parts of the conductive slip ring.

[0015] Preferably, a gap is reserved between the supporting flange and the fixed outer circle of the ring assembly shaft end; the perpendicularity of the upper half of the sleeve and the mating end face of the ring assembly shaft end is less than 2 / 3 of the dimensional tolerance; the perpendicularity of the contact surface of the lower end face of the sleeve and the supporting flange is less than 2 / 3 of the dimensional tolerance.

[0016] Preferably, the outer surfaces of the conductive ring locking ring and the fixed flange are plated with molybdenum disulfide to reduce the coefficient of friction between the conductive ring locking ring, the fixed flange and the conductive slip ring shaft system during loading, thereby correctly calculating the loading torque.

[0017] Preferably, the stacked conductive slip ring shaft system loading device further includes a height gauge, which is used to test the height of the conductive ring locking ring while applying a constant force, calculate the compression of the conductive slip ring shaft system, test the inflection point of the compression stiffness of the conductive slip ring shaft system, and determine the final shaft compression of the conductive slip ring.

[0018] Preferably, the sleeve adopts a split structure design, the sleeve is cut into upper and lower parts, the lower part is positioned by the lower shaft end of the conductive slip ring shaft system and fixed by the support flange, and the upper part is positioned and fixed by the fixing flange.

[0019] Preferably, the limiting strip is made of polyimide. The limiting strip is used to radially limit the conductive slip ring shaft system during loading, preventing the conductive ring and insulating spacer from deflecting during torque loading.

[0020] Preferably, an observation port is provided on the sleeve, which is used to check the appearance of the non-metallic insulating spacer and confirm that the loading is normal.

[0021] Preferably, the stacked conductive slip ring shaft system loading device does not require disassembly after loading, and can achieve repeated unloading and loading of the conductive slip ring shaft system in situ.

[0022] The present invention also provides a method for loading a shaft system of a stacked conductive slip ring, comprising the following: (The method uses the stacked conductive slip ring shaft system loading device described in any one of the above-mentioned methods.)

[0023] Step 1: Install and fix the assembly base on the assembly platform to facilitate the loading of shaft torque;

[0024] Step 2: Install the support flange onto the mounting end of the ring assembly shaft system, tighten the conductive ring lock nut to the mounting end of the ring assembly shaft system, and position and fix the support flange as a load-bearing seat;

[0025] Step 3: Install the ring assembly onto the mounting base, tighten and position it with screws;

[0026] Step 4: Install the sleeve and position it on the lower shaft end of the conductive ring assembly. The lower end of the sleeve is fastened to the locking nut of the conductive ring with screws.

[0027] Step 5: Install the fixing flange, the inner side of the fixing flange is positioned with the sleeve, and fastened with screws to form the loading shaft system of the ring assembly;

[0028] Step 6: Tighten the conductive ring locking ring to the upper shaft end of the ring assembly to apply torque to the shaft system;

[0029] Step 7: Install the limiting strip on the sleeve to facilitate control of the radial movement of the shaft system during the loading process;

[0030] Step 8: Install the loading fixture onto the conductive ring locking ring, and use the torque lever to apply a constant torque;

[0031] Step 9: After the shaft system constant torque is applied, remove the loading fixture, fixing flange, and sleeve in sequence, remove the ring assembly from the assembly base as a whole, and then remove the conductive ring lock nut and support flange.

[0032] Preferably, the method is used for loading and unloading of different types of conductive slip ring shaft systems with outer or inner circle positioning.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The loading device of this invention, through the design of the assembly base, achieves a fixed connection with the ring assembly and the assembly platform, enabling vertical installation of the entire shaft system and facilitating the lead-out of wires. Furthermore, the sleeve and the limiting strip fixed to the sleeve ensure coaxiality control of the conductive ring and the insulating sheet during loading, preventing radial movement. It achieves uniform transmission and loading of the axial clamping torque of the ring assembly, ensuring uniform axial and radial force loading on the conductive slip ring assembly shaft system, improving the performance after ring assembly and ensuring that the assembly accuracy of the ring assembly shaft system meets usage requirements. It can also meet the pre-tightening torque loading requirements of various ring assembly methods (inner circle positioning or outer circle positioning), ensuring the coaxiality of the ring assembly during loading. Moreover, the device utilizes as many product parts as possible, making it simple and easy to operate, reducing complexity.

[0035] 2. By using the loading device of the present invention for loading, while applying constant force, the height of the conductive ring locking ring can be measured with a height gauge, the compression of the ring assembly shaft system can be calculated, the inflection point of the compression stiffness of the shaft system can be tested, and the final compression of the ring shaft system can be determined. Attached Figure Description

[0036] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0037] Figure 1 This is a schematic diagram of the structure of a conductive slip ring assembly;

[0038] Figure 2 This is a schematic diagram of the stacked conductive slip ring shaft loading device;

[0039] Figure 3 This is a schematic diagram of the limit bar structure;

[0040] Figure 4 This is a cross-sectional view of a stacked conductive slip ring shaft loading device.

[0041] The markings in the diagram are as follows: Ring assembly 1, assembly base 10, conductive ring locking nut 20, support flange 30, sleeve 40, observation port 401, limit strip 50, limit strip fixing hole 501, conductive ring locking ring 60, fixing flange 70, loading fixture 80, assembly platform 90. Detailed Implementation

[0042] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0043] like Figure 1 As shown, a loading device for a stacked conductive slip ring shaft system includes: an assembly base 10, a conductive ring locking nut 20, a support flange 30, a sleeve 40, a limiting strip 50, a conductive ring locking ring 60, a fixed flange 70, a loading fixture 80, and an assembly platform 90. The conductive ring locking nut 20 and the conductive ring locking ring 60 can be borrowed from the original parts in the conductive slip ring body assembly 1.

[0044] Assembly base 10 is mounted on assembly platform 90; conductive ring locking nut 20 and support flange 30 are used to mount the shaft system of ring assembly 1 on assembly base 10; sleeve 40 is mounted on the outside of the shaft system of ring assembly 1; limit strip 50 is mounted on sleeve 40 to control the radial movement of the shaft system of ring assembly 1 during loading; conductive ring locking ring 60 is set on the upper shaft end of ring assembly 1; the inner side of fixed flange 70 is positioned with sleeve 40 to form the loading shaft system of ring assembly; loading fixture 80 is mounted on conductive ring locking ring 60 to apply torque to the shaft system of ring assembly 1.

[0045] The mounting base 10 achieves a fixed connection with the ring assembly 1 and the assembly platform, enabling vertical installation of the entire shaft system and facilitating the lead-out of wires.

[0046] Sleeve 40 is installed on the outer side of the shaft system of ring assembly 1; limit strip 50 is installed on sleeve 40 to realize the coaxiality control of conductive ring and insulating sheet during loading and avoid radial movement.

[0047] The conductive ring locking nut 20 and the conductive ring locking ring 60 can utilize the original parts in the conductive slip ring assembly 1, making the device simple and easy to operate, and reducing complexity.

[0048] This device ensures that the parts of the ring assembly 1 are subjected to uniform force on the radial contact surface, thus ensuring the uniform transmission of axial clamping torque during vertical loading.

[0049] A small gap of 0.05 to 0.1 mm is reserved between the support flange 30 and the outer circle of the shaft end fixing of the conductive slip ring assembly 1 to facilitate the installation of the support flange 30. At the same time, the small gap improves the radial accuracy of the overall loading shaft system.

[0050] The sleeve 40 and the supporting flange 30, and the sleeve 40 and the outer circle of the shaft end of the ring assembly 1 are all fitted with an H7 / g6 clearance fit;

[0051] The perpendicularity of the upper half of the sleeve 40 and the end face of the conductive slip ring assembly 1, and the perpendicularity of the contact surface of the lower end face of the sleeve 40 supporting flange 30 are both less than 2 / 3 of the dimensional tolerance, ensuring the vertical accuracy of the overall loading shaft system.

[0052] The outer surfaces of the conductive ring locking ring 60 and the fixed flange 70 are plated with molybdenum disulfide (MoS2). The outer surface of the molybdenum disulfide reduces the coefficient of friction during the loading process of the stacked conductive slip ring shaft system. Specifically, it reduces the coefficient of friction between the conductive ring locking ring 60, the fixed flange 70 and the conductive slip ring shaft system during the loading process, thereby correctly calculating the loading torque.

[0053] The device also includes a height gauge. While applying a constant force, the height gauge is used in conjunction with the height of the conductive ring locking ring 60 to calculate the compression of the shaft system of the ring assembly 1, test the inflection point of the compression stiffness of the shaft system, and determine the final compression of the shaft system of the ring assembly 1.

[0054] The sleeve 40 adopts a split structure design (half form). The sleeve 40 is precisely cut into upper and lower parts. The lower part is positioned by the lower shaft end of the ring assembly 1 and fixed by the support flange 30. The upper part is positioned and fixed by the fixing flange 70.

[0055] The limiting strip 50 is made of polyimide. During loading, the limiting strip 50 radially limits the axis of the ring assembly 1, preventing the conductive ring and insulating spacer from skewing during torque loading. Several limiting strip fixing holes 501 are provided on the limiting strip 50, allowing it to be fixed to the sleeve 40 using screws through these holes.

[0056] An observation port 401 is provided on the sleeve 40. During the loading process, the appearance of the non-metallic insulating spacer can be checked through the observation port 401 to confirm that the loading is normal.

[0057] After loading is complete, the ring assembly 1 shaft system can be repeatedly unloaded and loaded in situ without disassembly.

[0058] After loading is complete, the ring assembly 1 is detached from the assembly base 10, and the ring assembly 1 is placed horizontally on the V-shaped frame of equal height to achieve the circular runout test of the ring assembly 1.

[0059] This embodiment also provides a loading method for a stacked conductive slip ring shaft system, utilizing any of the above-mentioned stacked conductive slip ring shaft system loading devices, including:

[0060] Step 1: Install and fix the assembly base 10 on the assembly platform 90 to facilitate the loading of shaft torque;

[0061] Step 2: Install the support flange 30 onto the mounting end of the ring assembly 1 shaft system, tighten the conductive ring locking nut 20 to the shaft end, and position and fix the support flange 30 as a load bearing seat;

[0062] Step 3: The ring assembly 1 is installed on the assembly base 10, and locked and positioned with screws; in one embodiment, the screws are M10 screws, and there are 8 of them.

[0063] Step 4: Install the sleeve 40 and position it against the lower shaft end of the conductive ring assembly 1. The lower end of the sleeve 40 is fastened to the conductive ring locking nut 20 with screws. In one embodiment, the screws are M3 screws, and there are 8 of them.

[0064] Step 5: Install the fixing flange 70, with its inner side positioned with the sleeve 40, and tighten it with screws to form the loading shaft system of the ring assembly 1; in one embodiment, the screws are M3 screws, and there are 8 of them.

[0065] Step 6: Tighten the conductive ring locking ring 60 to the upper shaft end of the ring assembly 1 to apply torque to the shaft system;

[0066] Step 7: Install the limiting strip 50 and fasten the limiting strip 50 to the sleeve 40 with screws to facilitate the control of the radial movement of the shaft system during the loading process; in one embodiment, the screw is an M3 screw and there are 10 of them.

[0067] Step 8: Install the loading fixture 80 onto the conductive ring locking ring 60, and apply a constant torque using a torque lever;

[0068] The above method and device are used to apply shaft loading to the stacked conductive slip ring, thereby achieving torque loading of the ring assembly 1 in the vertical direction. This avoids excessive circular runout of the ring assembly 1 due to radial deformation caused by its own weight during the horizontal loading process.

[0069] This method is applicable to the shaft loading of ring assembly 1 of different types of conductive slip rings with outer or inner circle positioning.

[0070] Furthermore, a loading method for a stacked conductive slip ring shaft system also includes step 9 after loading is completed. Step 9 includes: after the shaft system is loaded with a constant torque, the loading fixture 80, the fixing flange 70, and the sleeve 40 can be removed in sequence to remove the ring assembly 1 from the assembly base 10 as a whole, and then the conductive ring locking nut 20 and the support flange 30 can be removed. The device does not require disassembly and can achieve repeated unloading and loading of the ring assembly 1 shaft system in situ.

[0071] In this embodiment, the stacked conductive slip ring shaft loading device is installed in sequence to achieve uniform transmission and loading of the axial clamping torque of the ring assembly 1. Using this device and method, while loading with a constant force, the height of the conductive ring locking ring 60 can be tested with a height gauge to calculate the compression amount of the shaft system of the ring assembly 1, test the inflection point of the compression stiffness of the shaft system, and determine the final compression amount of the shaft system of the ring assembly 1. The limiting strip 50 is used to radially limit the shaft system of the ring assembly during loading to prevent the conductive ring and insulating spacer from deflecting during torsional loading. During loading, the appearance of the non-metallic insulating spacer can be checked through the observation port 401 to confirm that the loading is normal.

[0072] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "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.

[0073] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A stacked conductive slip ring shaft loading device, characterized in that, include: Assembly base (10), conductive ring locking nut (20), support flange (30), sleeve (40), limit strip (50), conductive ring locking ring (60), fixed flange (70), loading fixture (80) and assembly platform (90); The assembly base (10) is mounted on the assembly platform (90); The conductive ring locking nut (20) and the support flange (30) are used to mount the ring assembly (1) shaft system onto the assembly base (10); The sleeve (40) is installed on the outside of the shaft system of the ring assembly (1); The limiting strip (50) has several limiting strip fixing holes (501), and the limiting strip (50) is fixed to the sleeve (40) by screws through the limiting strip fixing holes (501); the limiting strip (50) is used to control the radial movement of the shaft system of the ring assembly (1) during the loading process. The conductive ring locking ring (60) is disposed on the upper shaft end of the ring body assembly (1); The inner side of the fixed flange (70) is positioned with the sleeve (40) to form the loading shaft system of the ring assembly; The loading fixture (80) is installed on the conductive ring locking ring (60) and is used to apply torque to the shaft system of the ring assembly (1); The conductive ring locking nut (20) and the conductive ring locking ring (60) are original parts of the conductive slip ring.

2. The stacked conductive slip ring shaft loading device according to claim 1, characterized in that, The support flange (30) and the outer circle of the ring assembly (1) shaft end are reserved with a gap; The perpendicularity of the upper half of the sleeve (40) and the shaft end of the ring assembly (1) is less than 2 / 3 of the dimensional tolerance; the perpendicularity of the contact surface of the lower end face of the sleeve (40) supporting the flange (30) is less than 2 / 3 of the dimensional tolerance.

3. The stacked conductive slip ring shaft loading device according to claim 1, characterized in that, The outer surfaces of the conductive ring locking ring (60) and the fixed flange (70) are plated with molybdenum disulfide to reduce the coefficient of friction between the conductive ring locking ring (60), the fixed flange (70) and the conductive slip ring shaft system during loading, thereby correctly calculating the loading torque.

4. The stacked conductive slip ring shaft loading device according to claim 1, characterized in that, The stacked conductive slip ring shaft system loading device also includes a height gauge, which is used to test the height of the conductive ring locking ring (60) while loading a constant force, calculate the compression of the conductive slip ring shaft system, test the inflection point of the compression stiffness of the conductive slip ring shaft system, and determine the final shaft compression of the conductive slip ring.

5. The stacked conductive slip ring shaft loading device according to claim 1, characterized in that, The sleeve adopts a split structure design. The sleeve is cut into upper and lower parts. The lower part is positioned by the lower shaft end of the conductive slip ring shaft system and fixed by the support flange (30). The upper part is positioned and fixed by the fixing flange (70).

6. The stacked conductive slip ring shaft loading device according to claim 1, characterized in that, The limiting strip (50) is made of polyimide. The limiting strip (50) is used to radially limit the conductive slip ring shaft system during loading to prevent the conductive ring and insulating spacer from deflecting during torque loading.

7. The stacked conductive slip ring shaft loading device according to claim 1, characterized in that, An observation port (401) is provided on the sleeve (40). The observation port (401) is used to check the appearance of the non-metallic insulating spacer and confirm that the loading is normal.

8. The stacked conductive slip ring shaft loading device according to claim 1, characterized in that, After loading, the stacked conductive slip ring shaft system loading device does not require disassembly and can repeatedly unload and load the conductive slip ring shaft system in situ.

9. A loading method for a stacked conductive slip ring shaft system, characterized in that, The stacked conductive slip ring shaft loading device according to any one of claims 1 to 8 includes: Step 1: Install and fix the assembly base (10) on the assembly platform (90) to facilitate the loading of shaft torque; Step 2: Install the support flange (30) onto the mounting end of the ring assembly (1) shaft system, tighten the conductive ring locking nut (20) to the mounting end of the ring assembly (1) shaft system, and position and fix the support flange (30) as a load bearing seat; Step 3: The ring assembly (1) is installed on the assembly base (10), and locked and positioned with screws; Step 4: Install the sleeve (40) and position it at the lower shaft end of the ring body assembly (1) of the conductive ring. The lower end of the sleeve (40) is fastened to the locking nut (20) of the conductive ring with screws. Step 5: Install the fixing flange (70), the inner side of the fixing flange (70) is positioned with the sleeve (40), and fastened with screws to form the loading shaft system of the ring assembly (1); Step 6: Tighten the conductive ring locking ring (60) to the upper shaft end of the ring assembly (1) to apply torque to the shaft system; Step 7: Install the limiting strip (50) on the sleeve (40) to facilitate control of the radial movement of the shaft system during the loading process; Step 8: Install the loading fixture (80) onto the conductive ring locking ring (60) and apply a constant torque using a torque lever; Step 9: After the shaft system constant torque is loaded, remove the loading fixture (80), fixed flange (70), and sleeve (40) in sequence, remove the ring assembly (1) from the assembly base (10) as a whole, and then remove the conductive ring locking nut (20) and support flange (30).

10. The loading method for the stacked conductive slip ring shaft system according to claim 9, characterized in that, The method is used for loading and unloading of different types of conductive slip ring shaft systems with external or internal circular positioning.

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