Planetary reducer with feedback at corner input and output end

Abstract

The utility model relates to the technical field of planetary reducers, in particular to a planetary reducer with feedback at a corner input and output end, which comprises a direct-current motor, a speed reduction component shell mounted at the top of the direct-current motor, a speed reduction component mounted inside the speed reduction component shell, and a speed reduction output shaft mounted at one end of the speed reduction component shell. A feedback shaft is installed at the other end of the speed reduction assembly shell, an angular displacement sensor is installed at the outer end of the feedback shaft, and the speed reduction assembly comprises a plurality of planetary speed reduction wheels. According to the planetary reducer with feedback at the corner input end and the corner output end, the problem that an additional transition shaft is needed in the traditional design is avoided, so that the structure of a whole attitude adjusting system is simplified, and the complexity and the weight of the system are reduced. Due to the fact that the feedback shaft is directly connected with the output shaft, errors possibly introduced by a transition shaft are eliminated, angle feedback is more accurate, and the attitude control precision of the aircraft is improved. The number of parts and connecting points in the system are reduced, the probability of fault occurrence is reduced, and the reliability of the whole system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary reducers, and specifically, to a planetary reducer with feedback at the corner input and output ends. Background Art

[0002] In the attitude adjustment system of aircraft such as unmanned aerial vehicles, the corner input planetary reducer, as a key actuating mechanism, its performance directly affects the stability and control accuracy of the aircraft.

[0003] In the design of traditional corner input planetary reducers, a feedback shaft is usually not directly equipped at the output end, but an additional transition shaft is required to achieve the angle feedback function. This design not only increases the complexity of the system, but also may introduce feedback errors due to the presence of the transition shaft, affecting the accuracy and reliability of attitude adjustment. Summary of the Invention

[0004] The purpose of the utility model is to provide a planetary reducer with feedback at the corner input and output ends to solve the problem in the design of traditional corner input planetary reducers that a feedback shaft is usually not directly equipped at the output end, but an additional transition shaft is required to achieve the angle feedback function as mentioned in the above background art.

[0005] To achieve the above purpose, the utility model provides a planetary reducer with feedback at the corner input and output ends, including a DC motor. A speed reduction component housing is installed on the top of the DC motor. A speed reduction component is installed inside the speed reduction component housing. A speed reduction output shaft is installed at one end of the speed reduction component housing. A feedback shaft is installed at the other end of the speed reduction component housing. An angular displacement sensor is installed at the outer end of the feedback shaft. The speed reduction component includes several planetary reduction wheels.

[0006] Preferably, a driving bevel gear is installed at the top output end of the DC motor. A reversing bevel gear is arranged near the driving bevel gear inside the speed reduction component housing. The driving bevel gear meshes with the reversing bevel gear.

[0007] Preferably, one end of the feedback shaft is fixedly connected to the speed reduction output shaft, and the other end of the feedback shaft is rotatably connected to the axis center of the reversing bevel gear through a bearing.

[0008] Preferably, the middle part of the feedback shaft passes through the axis center of the planetary reduction wheel.

[0009] Preferably, an end cover is installed at one end of the speed reduction component housing through bolts, and a tail cover is installed at the other end through bolts.

[0010] Preferably, both the end cover and the tail cover are provided with gaskets to prevent the leakage of lubricating oil inside the reducer and ensure the sealing performance of the reducer.

[0011] Preferably, the angular displacement sensor is a magnetic encoder, which is used to monitor the rotation angle of the feedback shaft in real time and convert the angle signal into an electrical signal for output. The magnetic encoder includes a magnetic ring fixed on the feedback shaft and a sensor probe installed outside the magnetic ring. When the magnetic ring rotates with the feedback shaft, the sensor probe can sense the magnetic field change of the magnetic ring and thus output the corresponding electrical signal.

[0012] Preferably, the planetary reduction gear includes at least three planetary gears, which are evenly distributed inside the reduction component housing and form a planetary transmission structure with the reversing bevel gear and the reduction output shaft to achieve the effect of reducing speed and increasing torque.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In this corner input / output end with feedback planetary reducer, the problem of the need for an additional intermediate shaft in the traditional design is avoided, thus simplifying the structure of the entire attitude adjustment system, reducing the complexity and weight of the system. Since the feedback shaft is directly connected to the output shaft, the error that may be introduced by the intermediate shaft is eliminated, making the angle feedback more accurate and improving the attitude control accuracy of the aircraft. The number of components and connection points in the system is reduced, the probability of failure is lowered, and the reliability of the entire system is improved. The direct feedback design reduces the signal transmission delay, enabling the control system to respond to the attitude adjustment instruction faster and enhancing the maneuverability of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0016] Figure 2 is a schematic diagram of the internal structure of the reduction component in the present utility model;

[0017] The meanings of the various reference numerals in the figure are as follows:

[0018] 1, DC motor; 11, driving bevel gear; 2, reduction component housing; 21, reversing bevel gear; 22, planetary reduction gear; 23, reduction output shaft; 24, end cover; 25, tail cover; 3, feedback shaft; 4, angular displacement sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] The utility model provides a corner input-output end with feedback planetary reducer, as Figure 1 - Figure 2 shown, which includes a DC motor 1. A reduction component housing 2 is installed on the top of the DC motor 1. A reduction component is installed inside the reduction component housing 2. A reduction output shaft 23 is installed at one end of the reduction component housing 2. A feedback shaft 3 is installed at the other end of the reduction component housing 2. An angular displacement sensor 4 is installed at the outer end of the feedback shaft 3. The reduction component includes a number of planetary reduction gears 22. By directly connecting the DC motor 1 to the reduction component housing 2 and installing the reduction component inside the reduction component housing 2, the close integration of the motor and the reducer is achieved, reducing the connection links between components and improving the compactness and stability of the system. A feedback shaft 3 is provided at the other end of the reduction component housing 2 and connected to the angular displacement sensor 4, realizing the direct monitoring and feedback of the rotation angle of the reduction output shaft 23. This design eliminates the problem of the need for an additional intermediate shaft in the traditional structure and improves the accuracy and real-time performance of the feedback. The planetary reduction gears 22 in the reduction component adopt a reasonable distribution and transmission structure to achieve an efficient and stable reduction and torque increase effect, meeting the requirements of the aircraft attitude adjustment system for high-precision and high-torque output. The overall design takes into account the reliability and durability of the system. By selecting high-quality materials and precision machining processes, the long-term stable operation of the reducer is ensured, improving the performance and service life of the entire attitude adjustment system.

[0021] In this embodiment, a driving bevel gear 11 is installed at the top output end of the DC motor 1. A reversing bevel gear 21 is arranged inside the reduction component housing 2 near the driving bevel gear 11. The driving bevel gear 11 meshes with the reversing bevel gear 21. This design enables the power of the DC motor to be directly and efficiently transmitted to the reduction component, achieving effective conversion and transmission of power and improving the transmission efficiency and response speed of the reducer.

[0022] Specifically, one end of the feedback shaft 3 is fixedly connected to the reduction output shaft 23, and the other end of the feedback shaft 3 is rotatably connected to the axis of the reversing bevel gear 21 through a bearing. This connection method ensures that the feedback shaft 3 can accurately and real-time reflect the rotation angle of the reduction output shaft 23, while maintaining the relative rotational flexibility between the feedback shaft 3 and the reversing bevel gear 21, improving the accuracy and reliability of the feedback.

[0023] Furthermore, the middle part of the feedback shaft 3 passes through the axis of the planetary reduction gear 22. This design enables the feedback shaft 3 to directly penetrate the core area of the reduction component.

[0024] Furthermore, one end of the reduction component housing 2 is installed with an end cover 24 through bolts, and the other end is installed with a tail cover 25 through bolts. This design makes the reduction component housing 2 form a closed cavity, protecting the internal reduction component from external interference and damage. At the same time, the installation of the end cover and the tail cover also facilitates the maintenance and repair of the reducer.

[0025] Furthermore, both the end cover 24 and the tail cover 25 are provided with gaskets to prevent the leakage of lubricating oil inside the speed reducer and ensure the sealing performance of the speed reducer.

[0026] Furthermore, the angular displacement sensor 4 is a magnetic encoder, which is used to monitor the rotation angle of the feedback shaft 3 in real time and convert the angle signal into an electrical signal for output. The magnetic encoder includes a magnetic ring fixed on the feedback shaft 3 and a sensor probe installed on the periphery of the magnetic ring. When the magnetic ring rotates with the feedback shaft 3, the sensor probe can sense the magnetic field change of the magnetic ring, so as to output the corresponding electrical signal.

[0027] Furthermore, the planetary reduction gear 22 includes at least three planet gears, which are evenly distributed inside the reduction component housing 2 and form a planetary transmission structure with the reversing bevel gear 21 and the reduction output shaft 23 to achieve the effect of speed reduction and torque increase.

[0028] When the corner input and output end with feedback planetary speed reducer of the present utility model is in use, first, after the DC motor 1 starts, the driving bevel gear 11 at its top output end starts to rotate. The driving bevel gear 11 meshes with the reversing bevel gear 21 inside the reduction component housing 2 to transmit the rotational power of the motor to the reversing bevel gear 21.

[0029] The rotation of the reversing bevel gear 21 drives the planetary reduction gear 22 (including at least three planet gears) connected thereto. The planetary reduction gear 22 is evenly distributed inside the reduction component housing 2 and forms a planetary transmission structure with the reversing bevel gear 21 and the reduction output shaft 23. Through the planetary transmission structure, the reduction and torque increase of the input power are realized, meeting the requirements of the aircraft attitude adjustment system for high-precision and large-torque output.

[0030] The rotation of the reduction output shaft 23 drives the feedback shaft 3 fixedly connected thereto. The other end of the feedback shaft 3 is rotationally connected to the axis of the reversing bevel gear 21 through a bearing. At the same time, the middle part of the feedback shaft 3 passes through the axis of the planetary reduction gear 22, ensuring that the feedback shaft 3 can accurately and real-time reflect the rotation angle of the reduction output shaft 23. An angular displacement sensor 4 (magnetic encoder) is installed at the outer end of the feedback shaft 3, including a magnetic ring fixed on the feedback shaft 3 and a sensor probe installed on the periphery of the magnetic ring. When the magnetic ring rotates with the feedback shaft 3, the sensor probe can sense the magnetic field change of the magnetic ring and convert the angle signal into an electrical signal for output. The output electrical signal is transmitted to the control system of the aircraft for real-time monitoring and adjustment of the aircraft attitude.

[0031] One end of the deceleration component housing 2 is installed with an end cover 24 through bolts, and the other end is installed with a tail cover 25 through bolts, forming a closed cavity. Both the end cover 24 and the tail cover 25 are provided with gaskets to prevent the lubricating oil inside the reducer from leaking and ensure the sealing performance and long-term stable operation of the reducer.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary reducer with feedback at the corner input and output ends, comprising a DC motor (1), characterized in that: A reduction component housing (2) is installed at the top of the DC motor (1). A reduction component is installed inside the reduction component housing (2). A reduction output shaft (23) is installed at one end of the reduction component housing (2). A feedback shaft (3) is installed at the other end of the reduction component housing (2). An angular displacement sensor (4) is installed at the outer end of the feedback shaft (3). The reduction component includes a number of planetary reduction gears (22).

2. The corner input / output end planetary speed reducer with feedback according to claim 1, characterized in that: A driving bevel gear (11) is installed at the top output end of the DC motor (1). A reversing bevel gear (21) is arranged inside the reduction component housing (2) near the driving bevel gear (11). The driving bevel gear (11) meshes with the reversing bevel gear (21).

3. The corner input / output end planetary reducer with feedback according to claim 2, characterized in that: One end of the feedback shaft (3) is fixedly connected to the reduction output shaft (23), and the other end of the feedback shaft (3) is rotatably connected to the axis center of the reversing bevel gear (21) through a bearing.

4. The corner input / output end planetary reducer with feedback according to claim 3, characterized in that: The middle part of the feedback shaft (3) passes through the axis center of the planetary reduction gear (22).

5. The planetary reducer with feedback at the corner input and output ends according to claim 1, wherein: One end of the reduction component housing (2) is installed with an end cover (24) through bolts, and the other end is installed with a tail cover (25) through bolts.

6. The corner input / output end planetary speed reducer with feedback according to claim 5, characterized in that: Sealing gaskets are provided on both the end cover (24) and the tail cover (25).

7. The corner input / output end planetary reducer with feedback according to claim 1, characterized in that: The angular displacement sensor (4) is a magnetic encoder, which is used to monitor the rotation angle of the feedback shaft (3) in real time and convert the angle signal into an electrical signal for output. The magnetic encoder includes a magnetic ring fixed on the feedback shaft (3) and a sensor probe installed on the periphery of the magnetic ring.

8. The corner input / output end planetary reducer with feedback according to claim 1, wherein: The planetary reduction gear (22) includes at least three planetary gears, which are evenly distributed inside the reduction component housing (2) and form a planetary transmission structure with the reversing bevel gear (21) and the reduction output shaft (23).

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