A planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module

Abstract

The present invention discloses a planetary gear system with a planetary gear meshing clearance closed-loop adaptive control module, and the technical solution thereof mainly comprises an input shaft, a gear ring, a sun gear support bearing, a planet carrier assembly, a first fixing bolt, an output shaft, a slewing bearing and a sun gear; three groups of planetary gears are installed on the planet carrier assembly, and the three groups of planetary gears are respectively fixed on the outside of the planetary gear output shaft, and three groups of control modules for fine-tuning the planetary gears are arranged on the planet carrier assembly; the sun gear is fixed on the outside of the input shaft, and the sun gear rotates in the planet carrier assembly through the sun gear support bearing; the planet carrier assembly is fixed on the end of the output shaft through the first fixing bolt, and the slewing bearing is installed on the outside of the output shaft; the present invention realizes the meshing clearance adjustment of the planetary gear, the gear ring and the sun gear, so that the system can maintain stable motion under different working conditions.

Description

Technical Field

[0001] The invention relates to the field of planetary gear trains, and in particular to a planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module. Background Art

[0002] Planetary gear trains have the characteristics of high power density and large transmission ratio, which makes them widely used in power transmission equipment. However, due to their high processing precision and relatively complex structure, their product cost is high, and in actual operation, due to the existence of design errors, manufacturing errors and assembly errors, the system vibration and noise problems are more prominent. At the same time, since the input speed of the planetary gear system usually varies within a certain range, it cannot meet the requirements of stable operation in all speed conditions. Summary of the invention

[0003] In view of the problems mentioned in the background technology, an object of the present invention is to provide a planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module to solve the problems mentioned in the background technology.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module comprises an input shaft, a ring gear, a sun gear support bearing, a planet carrier assembly, a first fixing bolt, an output shaft, a slewing bearing and a sun gear;

[0006] The planet carrier assembly is equipped with three sets of planetary gears, which are respectively fixed to the outside of the planetary gear output shafts. The planet carrier assembly is equipped with three sets of control modules for fine-tuning the planetary gears.

[0007] The sun gear is fixed to the outside of the input shaft, and the sun gear rotates in the planet carrier assembly through a sun gear support bearing;

[0008] The planet carrier assembly is fixed to the end of the output shaft by a first fixing bolt, and the slewing bearing is installed outside the output shaft.

[0009] Preferably, the control module includes a second fixing bolt, a fixed pressure plate, a slider, a slide rail, a push plate and a micro-motor-push rod drive assembly, the micro-motor-push rod drive assembly is installed on the motor mounting surface of the planetary carrier body, the micro-motor-push rod drive assembly pushes the push plate to move, the slide rail is fixedly installed on the mounting surface of the planetary carrier body, the slider is assembled together with the slide rail through the track surface so that the slider has the freedom to translate along the track direction, the slider is fixedly assembled with the push plate, the planetary gear support shaft is assembled in the center hole of the slider so that the planetary gear support shaft realizes radial movement of the planetary gear under the action of the push rod of the micro-motor-push rod drive assembly, and the fixed pressure plate is fixedly installed on the planetary carrier body by the second fixing bolt.

[0010] Preferably, the micro-motor-push rod drive assembly is mounted on the motor mounting surface of the planetary carrier body by a first screw.

[0011] Preferably, the micro-motor-push rod drive assembly includes a drive motor and an internal screw slider mechanism.

[0012] Preferably, the push plate is fixed to the push rod end of the micro-motor-push rod drive assembly by a second screw.

[0013] Preferably, a mounting surface of the sliding block is fixedly assembled with the push plate by a third screw.

[0014] Preferably, keyways are provided on the input shaft and the output shaft.

[0015] Preferably, the driving motor is electrically connected to a controller, a control input terminal of the controller is electrically connected to an acceleration sensor, and a brush ring is installed on the planet carrier body.

[0016] In summary, the present invention mainly has the following beneficial effects:

[0017] The planetary gear system with a closed-loop adaptive control module for the meshing clearance of the planetary gear is designed with a motor-driven planetary gear clearance adjustment module, which realizes the meshing clearance adjustment between the planetary gear and the ring gear and the sun gear, so that the system can maintain stable motion under different working conditions; a micro-motor-push rod drive module is designed to realize the conversion of electrical energy into the rotational motion of the motor, and finally into the linear translation of the push rod, and the push rod is used to drive the slider to realize the micro-adjustment of the position of the planetary gear, thereby realizing the control of the meshing clearance; since the clearance control mechanism and the planetary frame body are in a synchronous rotation state, a carbon brush-slip ring conductive method is designed to transmit external current to the drive motor, and the clearance is controlled by controlling the micro-rotation of the drive motor; multiple sensors are installed on the gear box body, and the meshing point of abnormal vibration is judged according to the phase of the collected data, and then the drive of the motor at this position is controlled, and the meshing clearance is adjusted by the micro-displacement of the planetary gear. At the same time, the motor determines whether further adjustment is needed based on the real-time vibration data, and finally realizes the closed-loop control of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is one of the structural explosion diagrams of the present invention;

[0020] Figure 3 This is the second structural explosion diagram of the present invention.

[0021] Figure numerals: 1. input shaft; 2. ring gear; 3. planetary gear; 4. planetary gear output shaft; 5. sun gear support bearing; 6. planetary carrier assembly; 7. first fixing bolt; 8. output shaft; 9. slewing bearing; 10. second fixing bolt; 11. fixed pressure plate; 12. slider; 13. slide rail; 14. push plate; 15. third screw; 16. micro motor-push rod drive assembly; 17. planetary carrier body; 18. first screw; 19. brush ring; 20. sun gear. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] refer to Figures 1 to 3, a planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module, comprising an input shaft 1, a ring gear 2, a sun gear support bearing 5, a planet carrier assembly 6, a fixing bolt 7, an output shaft 8, a slewing bearing 9 and a sun gear 20; three groups of planetary gears 3 are installed on the planet carrier assembly 6, and the three groups of planetary gears 3 are respectively fixed to the outside of the planetary gear output shaft 4, and three groups of control modules for fine-tuning the planetary gears 3 are arranged on the planet carrier assembly 6; the sun gear 20 is fixed to the outside of the input shaft 1, and the sun gear 20 rotates in the planet carrier assembly 6 through the sun gear support bearing 5; the planet carrier assembly 6 is fixed to the end of the output shaft 8 through the fixing bolt 7, and the slewing bearing 9 is installed on the outside of the output shaft 8.

[0024] refer to Figures 1 to 3 The planetary gear system with the planetary gear meshing clearance closed-loop adaptive control module is designed with a motor-driven planetary gear clearance adjustment module, which realizes the meshing clearance adjustment between the planetary gear 3 and the ring gear 2 and the sun gear 20, so that the system can maintain stable motion under different working conditions; a micro-motor-push rod drive assembly 16 is designed to realize the conversion of electrical energy into the rotational motion of the motor, and finally into the linear translation of the push rod, and the push rod drives the slider 12 to realize the micro-adjustment of the position of the planetary gear 3, thereby realizing the control of the meshing clearance; since the clearance control mechanism and the planetary carrier body 17 are in a synchronous rotation state, the brush ring 19 and the slip ring conductive mode are designed to transmit the external current to the drive motor, and the clearance is controlled by controlling the micro-rotation of the drive motor; multiple sensors are installed on the gear box body, and the meshing point of abnormal vibration is judged according to the phase of the collected data, and then the drive of the motor at this position is controlled, and the meshing clearance is adjusted by the micro-displacement of the planetary gear 33. At the same time, the motor judges whether further adjustment is needed according to the real-time vibration data, and finally realizes the closed-loop control of the system.

[0025] refer to Figures 1 to 3 , wherein the control module includes a fixing bolt 10, a fixed pressure plate 11, a slider 12, a slide rail 13, a push plate 14 and a micro-motor-push rod drive assembly 16, wherein the micro-motor-push rod drive assembly 16 is mounted on the motor mounting surface of the planetary carrier body 17, and the micro-motor-push rod drive assembly 16 pushes the push plate 14 to move, and the slide rail 13 is fixedly mounted on the mounting surface of the planetary carrier body 17, and the slider 12 is assembled with the slide rail 13 through the track surface so that the slider 12 has the freedom to translate along the track direction, and the slider 12 is fixedly assembled with the push plate 14, and the planetary gear support shaft 4 is assembled in the center hole of the slider 12 so that the planetary gear support shaft 4 realizes the radial movement of the planetary gear 3 under the action of the push rod of the micro-motor-push rod drive assembly 16, and the fixed pressure plate 11 is fixedly mounted on the planetary carrier body 17 by the fixing bolt 10.

[0026] refer to Figures 1 to 3 , wherein the micro-motor-push rod driving assembly 16 is mounted on the motor mounting surface of the planetary carrier body 17 by means of a first screw 18 , and the first screw 18 can facilitate the connection between the planetary carrier body 17 and the micro-motor-push rod driving assembly 16 .

[0027] refer to Figures 1 to 3 , the micro-motor-push rod drive assembly 16 includes a drive motor and an internal screw slider mechanism; the push plate 14 is fixed to the push rod end of the micro-motor-push rod drive assembly 16 by a second screw 21; a mounting surface of the slider 12 is fixedly assembled with the push plate 14 by a third screw 15. ; keyways are provided on the input shaft 1 and the output shaft 8; the drive motor is electrically connected to a controller, the control input end of the controller is electrically connected to an acceleration sensor, and a brush ring 19 is installed on the planet carrier body 17.

[0028] refer to Figures 1 to 3 , the adaptive control process and method of the system are as follows:

[0029] 1. Number each planetary gear 3 and install an acceleration sensor on the gearbox body to detect vibration value and phase;

[0030] 2. According to the vibration value and phase of the acceleration sensor, the abnormal vibration point is determined, and the displacement that needs to be adjusted and the number of rotations of the motor are calculated according to the built-in mathematical model;

[0031] 3. Drive the corresponding motor so that the slider 12 completes the corresponding displacement;

[0032] 4. Determine whether the current vibration value is normal based on the real-time feedback value of the acceleration sensor. If the value is normal, end the regulation. If it does not reach the normal value, continue to regulate until the requirements are met.

[0033] 5. The second to fourth steps above are automatically completed by the system, realizing a closed-loop adaptive control process.

[0034] It should be noted that the adaptive control adjustment method requires obtaining the dynamic characteristics of the transmission system in advance, establishing a mathematical model based on its dynamic characteristics, and the control system adjusts the gap based on this mathematical model.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module, characterized in that: It comprises an input shaft (1), a ring gear (2), a sun gear support bearing (5), a planet carrier assembly (6), a first fixing bolt (7), an output shaft (8), a slewing bearing (9) and a sun gear (20); Three sets of planetary gears (3) are mounted on the planetary carrier assembly (6), the three sets of planetary gears (3) are respectively fixed to the outside of the planetary gear support shaft (4), and three sets of planetary gear clearance adjustment modules for fine-tuning the planetary gears (3) are arranged on the planetary carrier assembly (6); The sun gear (20) is fixed outside the input shaft (1), and the sun gear (20) rotates in the planet carrier assembly (6) via a sun gear support bearing (5); The planet carrier assembly (6) is fixed to the end of the output shaft (8) by means of a first fixing bolt (7), and the slewing bearing (9) is mounted on the outside of the output shaft (8); The planetary gear clearance adjustment module comprises a second fixing bolt (10), a fixing pressure plate (11), a slider (12), a slide rail (13), a push plate (14) and a micro-motor-push rod drive assembly (16). The micro-motor-push rod drive assembly (16) is mounted on a motor mounting surface of a planetary carrier body (17). The micro-motor-push rod drive assembly (16) pushes the push plate (14) to move. The slide rail (13) is fixedly mounted on the mounting surface of the planetary carrier body (17). The slider (12) The track surface and the slide rail (13) are assembled together so that the slider (12) has the freedom to translate along the track direction, the slider (12) is fixedly assembled with the push plate (14), the planetary gear support shaft (4) is assembled in the center hole of the slider (12) so that the planetary gear support shaft (4) can realize radial movement of the planetary gear (3) under the action of the push rod of the micro-motor-push rod drive assembly (16), and the fixed pressure plate (11) is fixedly mounted on the planetary carrier body (17) by a second fixing bolt (10); The micro-motor-push rod drive assembly (16) comprises a drive motor and an internal screw slider mechanism; The drive motor is electrically connected to a controller, a control input end of the controller is electrically connected to an acceleration sensor, and a brush ring (19) is mounted on the planet carrier body (17).

2. A planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module according to claim 1, characterized in that: The micro-motor-push rod drive assembly (16) is mounted on the motor mounting surface of the planet carrier body (17) via a first screw (18).

3. A planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module according to claim 1, characterized in that: The push plate (14) is fixed to the push rod end of the micro-motor-push rod drive assembly (16) by means of a second screw (21).

4. A planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module according to claim 1, characterized in that: A mounting surface of the sliding block (12) is fixedly assembled with the push plate (14) via a third screw (15).

5. A planetary gear train with a planetary gear meshing clearance closed-loop adaptive control module according to claim 1, characterized in that: The input shaft (1) and the output shaft (8) are provided with keyways.

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