Rv reducer module

Abstract

The utility model relates to the field of speed reducer especially RV speed reducer module, including RV reduction module, output motor, the output end of output motor is connected with the input of RV reduction module, wherein RV reduction module includes with speed reducer output end, its characterized in be all sealed and set up the skeleton oil seal between the connecting sleeve and output motor, between the connecting sleeve and output motor input, wherein the connecting sleeve of speed reducer output end near the side of output motor is sleeved and is connected, the connecting sleeve extends to the inside of output motor, and the terminal of connecting sleeve extending to the inside of output motor is equipped with encoder module, and the whole uses double encoder monitoring system, and the main encoder is directly installed in the speed reducer output end, and real -time detection transmission position adopts high concentricity connecting sleeve design, extends to the terminal inside motor, improves the installation accuracy while maintaining the original volume, optimizes internal space layout.

Description

Technical Field

[0001] This utility model relates to the field of speed reducers, and more particularly to an RV speed reducer module. Background Technology

[0002] Traditional RV reducers typically have only a single encoder installed at the motor end, indirectly calculating the reducer's output position by detecting the motor shaft's rotational position. This design has inherent flaws: First, the encoder signal must be transmitted through the reducer's drivetrain, and factors such as gear backlash and elastic deformation in the intermediate links can cause lag and errors in position feedback; second, the encoder at the motor end cannot directly reflect the true position of the reducer's output, especially when there are load fluctuations or wear on the drivetrain, the error will further accumulate; finally, the single encoder system lacks a redundancy verification mechanism, and once the encoder fails or there is signal interference, it will directly lead to equipment malfunction.

[0003] If direct monitoring of the reducer output position is required, traditional solutions necessitate adding an encoder to the reducer. However, due to space constraints in the reducer's layout, adding an encoder requires enlarging the housing size or redesigning the transmission structure, resulting in a significant increase in overall volume. This not only raises the spatial barrier for equipment installation but also increases manufacturing costs, contradicting the core industrial demand for "miniaturization and lightweighting" of transmission components.

[0004] Traditional RV reducer sealing structures often rely on single-layer rubber seals or ordinary oil seals. Under high-speed, high-temperature, or dusty conditions, the sealing lip is prone to loss of elasticity due to frictional wear or material aging, leading to lubricant leakage. Furthermore, single-layer seals cannot effectively prevent the intrusion of external particles. Dust or metal debris entering the transmission cavity can accelerate the wear of precision components such as gears and bearings, shorten equipment maintenance cycles, and even cause malfunctions and downtime. Summary of the Invention

[0005] To address the aforementioned issues, this utility model provides an RV reducer module with a dual encoder monitoring system. The main encoder is directly installed at the reducer output end to detect the transmission position in real time. It adopts a high concentricity connecting sleeve design that extends to the end of the motor, improving installation accuracy while maintaining the original volume and optimizing the internal space layout.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an RV reducer module, including an RV reducer module and an output motor, wherein the output end of the output motor is connected to the input end of the RV reducer module, wherein the RV reducer module includes a reducer output end, wherein a connecting sleeve is sleeved on the side of the reducer output end near the output motor, the connecting sleeve extends into the output motor, and an encoder module is fitted at the end of the connecting sleeve extending into the output motor, and a skeleton oil seal is provided between the connecting sleeve and the output motor, and between the connecting sleeve and the input end of the output motor.

[0007] Furthermore, the output end of the reducer is an output planetary carrier, and the surface of the output planetary carrier is provided with mounting holes. Several connecting feet are provided on the outside of the connecting sleeve. The connecting sleeve and the output planetary carrier are fixed by bolts passing through the connecting parts and mounting holes.

[0008] Furthermore, the output motor includes an output sealing end cover, wherein a fitting sleeve is provided at the center of the output sealing end cover; at the same time, the connecting sleeve extends into the fitting sleeve, and a skeleton oil seal is fitted between the two; the output shaft of the output motor passes through the connecting sleeve, and a skeleton oil seal is fitted between the two.

[0009] Furthermore, a code disk bracket is installed at the end of the connecting sleeve. The encoder module includes a code disk and a reader head. The code disk is mounted on the code disk bracket, and the reader head is mounted at the end of the sleeve and works in conjunction with the code disk.

[0010] Furthermore, a first partition is provided on the inner wall of the fitting sleeve, which divides the fitting sleeve into a first bearing groove and a first skeleton oil seal mounting groove. The skeleton oil seal is fitted in the first skeleton oil seal mounting groove and is tightly attached to the outer wall of the connecting sleeve. The fitting sleeve and the connecting sleeve are movably fitted together through the first bearing fitted in the first bearing groove.

[0011] Furthermore, a second partition is provided on the inner wall of the connecting sleeve, which divides the connecting sleeve into a second bearing groove and a second skeleton oil seal mounting groove. The skeleton oil seal is fitted in the second skeleton oil seal mounting groove and is close to the outer wall of the output shaft of the output motor. The output shaft of the motor and the connecting sleeve are movably fitted through the second bearing fitted in the second bearing groove.

[0012] Furthermore, the inner wall of the sleeve is also provided with a speedometer clearance slot on one side of the skeleton oil seal mounting slot, and the diameter of the speedometer clearance slot is larger than the diameter of the skeleton oil seal mounting slot.

[0013] Furthermore, a reading head mounting slot is provided on one side of the sleeve, and the reading head is mounted on the reading head mounting slot by bolts.

[0014] The beneficial effects of this utility model are as follows: By fixing an encoder to the RV output end and utilizing the fixed connection between the output end and the disk frame, the encoder can accurately identify changes in the output end position. Simultaneously, an additional encoder at the RV output end, together with the encoder on the motor end, forms a dual monitoring system, enabling real-time tracking of the output end position. A high-concentricity connecting sleeve design extends to the end of the motor's interior, improving installation accuracy while maintaining the original volume and optimizing internal space layout. A multi-layer sealing structure is employed, with skeleton oil seals installed between the connecting sleeve and the motor / input end to effectively prevent grease leakage and ensure sealing performance and structural stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall device.

[0016] Figure 2 This is a cross-sectional structural diagram of the overall device.

[0017] Figure 3 This is a structural diagram of the output planetary carrier and connecting sleeve assembly.

[0018] Figure 4 This is a structural diagram of the connecting sleeve.

[0019] Figure 5 This is a cross-sectional structural diagram of the connecting sleeve.

[0020] Figure 6 This is a schematic diagram of the output sealing end cap.

[0021] Figure 7 This is a cross-sectional structural diagram of the output sealing end cap.

[0022] Explanation of icon numbers: 1. RV reduction module; 11. Output planetary carrier; 111. Mounting hole; 2. Output motor; 21. Output sealing end cover; 22. Output shaft; 211. Mounting sleeve; 2110. First partition; 2111. First bearing slot; 2112. First skeleton oil seal mounting slot; 2113. Code meter clearance slot; 2114. Reader head mounting slot; 3. Connecting sleeve; 31. Connecting foot; 32. Second partition; 33. Second bearing slot; 34. Second skeleton oil seal mounting slot; 35. Bracket mounting slot; 4. Skeleton oil seal; 51. Code disc bracket; 52. Code disc; 53. Reader head. Detailed Implementation

[0023] Please see Figure 1-7 As shown, this utility model relates to an RV reducer module, including an RV reducer module 1 and an output motor 2. The output end of the output motor 2 is connected to the input end of the RV reducer module 1. The RV reducer module 1 includes a reducer output end, wherein a connecting sleeve 3 is sleeved on the side of the reducer output end near the output motor 2. The connecting sleeve 3 extends into the output motor 2, and an encoder module is installed at the end of the connecting sleeve 3 extending into the output motor 2. A skeleton oil seal 4 is provided to seal between the connecting sleeve 3 and the output motor 2, and between the connecting sleeve 3 and the input end of the output motor 2.

[0024] When the output motor 2 is running, power is transmitted to the input end of the RV reduction module 1 through the output end. The connecting sleeve 3 is fitted onto the output end of the reducer (on the side closest to the output motor 2) and extends into the interior of the output motor 2, with an encoder module mounted at its end. The code disk 52 of the encoder module rotates with the connecting sleeve 3, and the read head 53, fixed inside the motor, reads the information from the code disk 52 to monitor the position change of the output end in real time, forming a dual encoder monitoring system. The skeleton oil seal 4, which is set between the connecting sleeve 3 and the output motor 2 and the input end, forms an effective seal through the interference fit between the elastic sealing lip of the skeleton oil seal 4 and the journal, preventing internal lubricating grease leakage and preventing external dust and impurities from entering.

[0025] Beneficial effects: Integrating the encoder module into the motor via the connecting sleeve 3 enables real-time and accurate monitoring of the output position, improving equipment control precision. The dual encoder system, through the coordinated operation of the code disk 52 and the reader 53, ensures accurate and timely position feedback. The multi-layer skeleton oil seal 4 forms a reliable seal between the connecting sleeve 3 and the motor and input end, preventing grease leakage, extending maintenance cycles, and preventing external contaminants from entering, ensuring lubrication of internal transmission components. The extended design of the connecting sleeve 3 optimizes the spatial layout, improving overall operational stability and reliability while maintaining a compact structure. The synergistic effect of the encoder module and the sealing structure ensures that the reducer maintains high precision and low wear during long-term operation, extending equipment lifespan.

[0026] Furthermore, the output end of the reducer is an output planetary carrier 11, and the surface of the output planetary carrier 11 is provided with mounting holes 111. Several connecting feet 31 are provided on the outside of the connecting sleeve 3. The connecting sleeve 3 and the output planetary carrier 11 are fixed by bolts passing through the connecting parts and mounting holes 111.

[0027] The output planetary carrier 11 serves as the output end of the reducer. Its surface has mounting holes 111 that are fixedly connected to the connecting feet 31 on the outside of the connecting sleeve 3 using bolts. Specifically, after aligning the holes on the connecting feet 31 with the mounting holes 111 of the output planetary carrier 11, bolts pass through both and are tightened with nuts to form a rigid connection. It should be noted that in this embodiment, the RV reduction module 1 also includes a planetary gear set located between the output planetary carrier 11 and the connecting sleeve 3. The output shaft 22 of the output motor 2 is fitted with the planetary gear set, thereby driving the planetary gear set to drive other internal structures of the RV reduction module 1 to achieve linkage (since the other internal structures of the RV reduction module 1 are conventional technologies, the principle of speed reduction will not be elaborated further). Finally, the output planetary carrier 11 serves as the output end of the reducer. The connecting foot 31 is a long cylindrical structure, which is fitted with the mounting hole 111 of the output planetary carrier 11. This can prevent the connecting foot 31 from affecting the normal operation of the planetary gear set, and at the same time ensure the normal connection with the output planetary carrier 11 to achieve the subsequent linkage state.

[0028] Furthermore, the output motor 2 includes an output sealing end cover 21, wherein a fitting sleeve 211 is provided at the center of the output sealing end cover 21; at the same time, the connecting sleeve 3 extends into the fitting sleeve 211, and a skeleton oil seal 4 is fitted between the two; the output shaft 22 of the output motor 2 passes through the connecting sleeve 3, and a skeleton oil seal 4 is fitted between the two.

[0029] The output motor 2 includes an output sealing end cover 21, with a fitting sleeve 211 positioned at its center. A connecting sleeve 3 extends into the fitting sleeve 211, and the two are sealed together by a skeleton oil seal 4. Simultaneously, the output shaft 22 of the output motor 2 passes through the connecting sleeve 3, and a skeleton oil seal 4 is also fitted between the output shaft 22 and the connecting sleeve 3. The skeleton oil seal 4, through its own elastic sealing lip and interference fit with the journal, forms an effective seal on the rotating contact surface, preventing internal lubricating grease leakage and preventing external dust, moisture, and other contaminants from entering.

[0030] Furthermore, a code disk bracket 51 is also installed at the end of the connecting sleeve 3. The encoder module includes a code disk 52 and a reader head 53. The code disk 52 is installed on the code disk bracket 51, and the reader head 53 is installed at the end of the mounting sleeve 211 and works in conjunction with the code disk 52.

[0031] A code disk bracket 51 is installed at the end of the connecting sleeve 3, and the code disk 52 of the encoder module is fixed on the bracket. Meanwhile, a read head 53 is installed at the end of the mounting sleeve 211. The read head 53 maintains a relative position with the code disk 52, and monitors the position of the output end by detecting changes in the rotational position of the code disk 52. When the connecting sleeve 3 rotates with the output end, the code disk 52 rotates synchronously. The read head 53 reads the scale information on the code disk 52 using non-contact or contact sensing technology and transmits the signal to the control system.

[0032] Through the coordinated operation of the code disk bracket 51 and the end reader 53 of the mounting sleeve 211, the encoder module can accurately monitor the position changes at the output end in real time, improving the control accuracy of the equipment. The code disk bracket 51 ensures the stable installation of the code disk 52, avoiding measurement errors caused by vibration or offset; the cooperative design between the reader 53 and the code disk 52 enables non-contact position detection, reduces mechanical wear, and extends the module's service life. This structure features convenient installation and stable signal transmission, making it suitable for high-precision transmission scenarios.

[0033] Furthermore, a first partition 2110 is provided on the inner wall of the fitting sleeve 211. The first partition 2110 divides the fitting sleeve 211 into a first bearing groove 2111 and a first skeleton oil seal mounting groove 2112. The skeleton oil seal 4 is fitted in the first skeleton oil seal mounting groove 2112 and is close to the outer wall of the connecting sleeve 3. The fitting sleeve 211 and the connecting sleeve 3 are movably fitted through the first bearing fitted in the first bearing groove 2111.

[0034] The first partition 2110 on the inner wall of the mounting sleeve 211 divides the internal space into two functional slots—the first bearing slot 2111 and the first skeleton oil seal mounting slot 2112. The skeleton oil seal 4 is tightly embedded in the first skeleton oil seal mounting slot 2112, and its elastic sealing lip forms a rotary sealing interface with the outer wall of the connecting sleeve 3 through an interference fit, effectively preventing lubricating grease leakage and the intrusion of external contaminants. At the same time, the bearing installed in the first bearing slot 2111 supports the relative rotational movement between the mounting sleeve 211 and the connecting sleeve 3, replacing sliding friction with rolling friction, reducing rotational resistance and ensuring coaxiality.

[0035] Furthermore, a second partition 32 is provided on the inner wall of the connecting sleeve 3, which divides the connecting sleeve 3 into a second bearing groove 33 and a second skeleton oil seal mounting groove 34. The skeleton oil seal 4 is fitted into the second skeleton oil seal mounting groove 34 and is tightly attached to the outer wall of the output shaft 22 of the output motor 2. The output shaft 22 of the motor and the connecting sleeve 3 are movably fitted through the second bearing fitted into the second bearing groove 33. At the same time, the code disk bracket 51 is a bracket mounting groove 35 installed on one side of the second skeleton oil seal mounting groove 34, which can ensure the stable configuration of the code disk bracket 51.

[0036] The second partition 32 on the inner wall of the connecting sleeve 3 divides its interior into two independent functional areas—the second bearing groove 33 and the second skeleton oil seal mounting groove 34. The skeleton oil seal 4 is tightly embedded in the second skeleton oil seal mounting groove 34, and its elastic sealing lip forms an interference fit dynamic sealing interface with the outer wall of the output shaft 22 of the output motor 2 (e.g., Figure 5 As shown in the diagram, this effectively prevents lubricating grease from leaking along the output shaft 22. Simultaneously, the second bearing installed in the second bearing slot 33 supports the relative rotational movement between the output shaft 22 and the connecting sleeve 3, replacing sliding friction with rolling friction, significantly reducing rotational resistance and ensuring the coaxial accuracy of the output shaft 22 during high-speed operation. When the output motor 2 drives the output shaft 22 to rotate, the skeleton oil seal 4 continuously maintains a sealed state, preventing internal grease leakage and external dust intrusion; while the second bearing bears the radial load, reducing vibration offset between the connecting sleeve 3 and the output shaft 22, providing a stable rotational reference for the end encoder module.

[0037] Furthermore, the inner wall of the mounting sleeve 211 is also provided with a speedometer clearance slot 2113 located on one side of the first skeleton oil seal mounting slot 2112, and the diameter of the speedometer clearance slot 2113 is larger than the diameter of the first skeleton oil seal mounting slot 2112.

[0038] The mounting slot for the skeleton oil seal 4 maintains a small aperture to ensure a tight fit between the skeleton oil seal 4 and the outer wall of the connecting sleeve 3, maintaining a dynamic sealing interface. The enlarged aperture of the code meter clearance slot 2113 provides radial clearance space for the code disk 52 of the encoder module, preventing interference between the code disk 52 and the inner wall of the sleeve when it rotates. When the connecting sleeve 3 drives the end code disk 52 to rotate, the enlarged code meter clearance slot 2113 forms a safety gap, ensuring that the code disk 52 will not contact the inner wall of the sleeve due to micro-vibration or assembly deviation during high-speed rotation. At the same time, the small aperture structure of the skeleton oil seal mounting slot maintains the compression of the sealing lip, continuously preventing grease leakage and external dust intrusion.

[0039] Furthermore, a reading head mounting slot 2114 is provided on one side of the mounting sleeve 211, and the reading head 53 is mounted on the reading head mounting slot 2114 by bolts.

[0040] A read head mounting slot 2114 is provided on one side of the mounting sleeve 211, and the read head 53 is mounted in this slot by bolts. This design ensures the stable positioning of the read head 53, enabling it to accurately align with the code disk 52 and achieve precise position detection. The bolt fixing method facilitates installation and adjustment while providing a reliable connection. By providing the read head mounting slot 2114 on one side of the mounting sleeve 211, the precise positioning and stable installation of the read head 53 are ensured, avoiding measurement errors caused by vibration or offset. The bolt fixing method provides a reliable connection and facilitates the disassembly and maintenance of the read head 53, improving the maintainability of the equipment. In addition, the slot design optimizes the internal space layout, ensuring that the mating clearance between the read head 53 and the code disk 52 meets the requirements, improving the accuracy and stability of position detection.

[0041] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An RV reducer module, comprising an RV reducer module and an output motor, wherein the output end of the output motor is connected to the input end of the RV reducer module, and the RV reducer module includes a reducer output end, characterized in that, A connecting sleeve is fitted onto the side of the reducer output end near the output motor. The connecting sleeve extends into the output motor, and an encoder module is installed at the end of the connecting sleeve that extends into the output motor. A skeleton oil seal is installed between the connecting sleeve and the output motor, and between the connecting sleeve and the input end of the output motor.

2. The RV reducer module according to claim 1, characterized in that: The output end of the reducer is an output planetary carrier. The surface of the output planetary carrier is provided with mounting holes. Several connecting feet are provided on the outside of the connecting sleeve. The connecting sleeve and the output planetary carrier are fixed by bolts passing through the connecting parts and mounting holes.

3. An RV reducer module according to claim 2, characterized in that: The output motor includes an output sealing end cover, wherein a fitting sleeve is provided at the center of the output sealing end cover; at the same time, the connecting sleeve extends into the fitting sleeve, and a skeleton oil seal is fitted between the two; the output shaft of the output motor passes through the connecting sleeve, and a skeleton oil seal is fitted between the two.

4. An RV reducer module according to claim 3, characterized in that: The end of the connecting sleeve is also equipped with a code disk bracket, wherein the encoder module includes a code disk and a reader head, wherein the code disk is mounted on the code disk bracket, and the reader head is mounted on the end of the sleeve and works in conjunction with the code disk.

5. An RV reducer module according to claim 4, characterized in that: The inner wall of the fitting sleeve is also provided with a first partition plate, which divides the fitting sleeve into a first bearing groove and a first skeleton oil seal mounting groove. The skeleton oil seal is fitted in the first skeleton oil seal mounting groove and is close to the outer wall of the connecting sleeve. The fitting sleeve and the connecting sleeve are movably fitted through the first bearing fitted in the first bearing groove.

6. An RV reducer module according to claim 4, characterized in that: A second partition is provided on the inner wall of the connecting sleeve, which divides the connecting sleeve into a second bearing slot and a second skeleton oil seal mounting slot. The skeleton oil seal is fitted in the second skeleton oil seal mounting slot and is close to the outer wall of the output shaft of the output motor. The output shaft of the motor and the connecting sleeve are movably fitted through the second bearing fitted in the second bearing slot.

7. An RV reducer module according to claim 6, characterized in that: The inner wall of the sleeve is also provided with a speedometer clearance slot on one side of the skeleton oil seal mounting slot, and the diameter of the speedometer clearance slot is larger than the diameter of the skeleton oil seal mounting slot.

8. An RV reducer module according to claim 7, characterized in that: The sleeve is also equipped with a reading head mounting slot on one side, and the reading head is installed in the reading head mounting slot by bolts.

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