Steady state analysis device and analysis method for multi-planet-gear structure

Abstract

The invention discloses a multi-planet-gear structure steady state analysis device and analysis method, and relates to the technical field of planet gears, the multi-planet-gear structure steady state analysis device comprises a fixed bottom foot, two supporting frames erected at the top end of the fixed bottom foot are fixedly installed at the top end of the fixed bottom foot, and a top supporting frame is fixedly installed in the middle of the top ends of the two supporting frames; a lifting machine frame capable of lifting up and down in a reciprocating mode is arranged in the middle of the top supporting frame, a sun wheel rotating shaft is arranged in the middle of the lifting machine frame, a plurality of planet wheels are placed in the middle of the top end of the fixing bottom foot, and pressing plates capable of lifting up and down in a reciprocating mode are arranged on the surfaces of the two supporting frames. Each multi-planet wheel rotates to synchronously drive a gear ring to rotate at the top end of a fixed base, specifically, a servo motor at the top end of a lifting rack drives a sun wheel rotating shaft to rotate, and the sun wheel rotating shaft drives each planet wheel of the multi-planet wheels to rotate in the rotating process; the planet gear is pressed tightly through the planet gear rotating shaft in the rotating process so that the planet gear does not jump, and the rotating stability of the planet gear is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of planetary gears, and in particular to a device and method for analyzing the steady-state state of a multi-planetary gear structure. Background Art

[0002] The basic structure of a planetary gear system consists of a sun gear, planet gears, and an inner ring gear. This arrangement allows it to efficiently share and transmit torque and motion. The sun gear is located at the center and directly connects to external devices, typically serving as an input or output. The planet gears are mounted on a rotatable bracket. Just as the planets orbit the sun, the planet gears orbit around the sun gear. Simultaneously, each planet gear rotates on its own axis. The inner ring gear is located on the outermost side and contains teeth that mesh with the planet gears.

[0003] The working principle of planetary gears is the transmission of rotational force and speed. When the sun gear, acting as the input, rotates, its rotational force is transmitted to the planet gears through the meshing teeth. The planet gears orbit the sun gear while rotating, transmitting the rotational force and speed to the inner ring gear. Due to the meshing of the planet gears and the inner ring gear, the inner ring gear also rotates in the same direction as the planet gears. Notably, the orbital and rotational speeds of the planet gears are independent, which improves transmission flexibility and efficiency.

[0004] Advantages of Planetary Gear Transmission: Planetary gear transmissions offer high transmission efficiency and reliability, capable of withstanding heavy loads and high torques. This is due to their unique structural design, which allows multiple planetary gears to share the load, thereby improving overall transmission stability. Furthermore, the compact design of planetary gears saves space and is suitable for use in a variety of mechanical systems. Overall, planetary gears' unique structure, ingenious operating principle, high transmission efficiency, and ability to withstand high torques have led to their widespread application in numerous fields.

[0005] At present, depending on the different usage environments, planetary gears may use multiple planetary gears when in use, that is, multiple planetary gears revolve around the sun gear. Since the structure involves multiple planetary gears, it is necessary to perform a steady-state analysis on the multiple planetary gear structures to determine the structural stability of the multiple planetary gears when working. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a multi-planetary gear structure steady-state analysis device and analysis method to solve the current problem that, depending on the different usage environments, planetary gears may use multiple planetary gears when in use, that is, multiple planetary gears revolve around the sun gear. Since the structure involves multiple planetary gears, it is necessary to perform a steady-state analysis on the multiple planetary gear structures to determine the technical problem of structural stability of the multiple planetary gears when working.

[0007] To achieve the above object, the present invention is implemented through the following technical solutions:

[0008] A multi-planetary gear structure steady-state analysis device and analysis method, including a fixed base, two support frames upright on the top of the fixed base are fixedly installed on the top of the fixed base, a top support frame is fixedly installed at the middle position of the top of the two support frames, a lifting frame that can be lifted up and down is provided in the middle of the top support frame, a sun gear shaft is provided in the middle of the lifting frame, multiple planetary gears are placed in the middle of the top of the fixed base, and a pressing plate that can be lifted up and down is provided on the surface of the two support frames, and a vibration monitor, a noise monitor, and a temperature monitor are provided on the bottom surface of each pressing plate, the pressing plate is pressed against the top surface of the gear ring of the multiple planetary gear, and the vibration monitor, noise monitor, and temperature monitor on the bottom surface of the pressing plate are in contact with the top surface of the gear ring of the multiple planetary gear.

[0009] As a preferred technical solution of the present invention, the surface of each support frame is slidably connected to a sliding frame, the surface of the sliding frame is fixedly installed with an electric push rod three, the electric push rod three has a push rod extending outward, and the clamping plate is fixed to the top of the push rod of the electric push rod three, and the surface of each support frame is fixedly installed with an electric push rod two, the electric push rod two has a push rod extending downward, and the bottom end of the push rod of the electric push rod two is fixed to the top surface of the sliding frame.

[0010] As a preferred technical solution of the present invention, a plurality of electric push rods are fixed to the top of the top support frame, each of the electric push rods has a push rod extending downward, and the bottom of the push rod is fixed to the top surface of the lifting frame.

[0011] As a preferred technical solution of the present invention, the lifting frame is configured as a disc structure, a servo motor is fixed to the top of the lifting frame, the servo motor has an output shaft extending downward, and the sun gear shaft and the output shaft are an integrated structure;

[0012] A plurality of high-speed cameras are arranged at equal intervals on the bottom edge of the lifting frame, and a fill light is arranged between two adjacent high-speed cameras.

[0013] As a preferred technical solution of the present invention, the outer wall of the lifting frame is provided with multiple sliding arms at equal intervals around the circumference, and a guide sliding hole with a straight hole structure is opened on the surface of each sliding arm. The straight hole surface of the sliding arm is slidably connected to a rotating shaft with an adjustable position, and the bottom end of the rotating shaft is fixedly installed with a planetary gear shaft.

[0014] As a preferred technical solution of the present invention, the rotating shaft includes a shaft sleeve arranged on the outer wall of the rotating shaft, the outer wall of the shaft sleeve is provided with a thread, the shaft sleeve is installed in the guide sliding hole, the outer wall of the shaft sleeve is provided with a thread, the outer wall of the shaft sleeve is connected to a locking sleeve 1 and a locking sleeve through a thread, and the locking sleeve 1 and the locking sleeve are respectively installed on the upper and lower ends of the sliding arm.

[0015] As a preferred technical solution of the present invention, a through shaft hole is opened in the middle of the shaft sleeve, the rotating shaft is rotatably connected in the shaft hole, the bottom end of the rotating shaft rotatably connected in the shaft hole is provided with a top limit plate, the top end of the rotating shaft rotatably connected in the shaft hole is installed with a pressure wheel plate, the top end of the rotating shaft is provided with a threaded surface, the top end of the rotating shaft is threadedly connected to a clamping nut, and the clamping nut is provided above the pressure wheel plate at the top end of the rotating shaft.

[0016] As a preferred technical solution of the present invention, the top of the shaft sleeve is provided with a plurality of steel ball grooves at equal intervals around the circumference, a roller steel ball is rotatably connected in each of the steel ball grooves, and the pressure wheel plate is pressed against the top surface of the roller steel ball.

[0017] As a preferred technical solution of the present invention, a threaded rod is provided at the bottom end of the rotating shaft, and a hollow opening with a circular hole structure is provided at the bottom end of the threaded rod, and a threaded surface is provided on the outer wall of the threaded rod, and a threaded sleeve is provided at the top end of the planetary gear rotating shaft, and a threaded surface is provided on the inner wall of the threaded sleeve that matches the outer wall of the threaded rod, and the inner wall of the threaded rod is connected to the bottom end of the outer wall of the threaded rod by a thread, and a through threaded hole is provided on the surface of the threaded sleeve and the surface of the threaded rod, and the threaded hole on the surface of the threaded sleeve and the threaded hole on the surface of the threaded rod are threadedly connected to a limiting screw.

[0018] As a preferred technical solution of the present invention, an analysis method is also provided, which mainly includes the following steps:

[0019] S1. Multi-planetary gear installation: Place the multi-planetary gear to be analyzed for structural steady-state on top of the fixed base. Assemble the multi-planetary gear ring, planetary gears, and sun gear on top of the fixed base. Press the multi-planetary gear ring against the top of the fixed base by lifting the pressing plate downward.

[0020] S2. Power connection of the sun gear: The lifting frame descends, and the bottom end of the sun gear shaft is connected to the sun gear of the multi-planetary gear through a key connection;

[0021] S3. Planetary gear compression connection: Adjust the position of the rotating shaft on each sliding arm so that the bottom end of each planetary gear shaft is connected to the sun gear of the multi-planetary gear through a key connection;

[0022] S4. Multi-planetary gear drive rotation: The servo motor at the top of the lifting frame drives the sun gear shaft to rotate. The sun gear shaft rotates, which drives each of the multiple planetary gears to rotate. The planetary gears are pressed tightly by the planetary gear shafts and do not jump during rotation.

[0023] S5. Steady-state image analysis: During the rotation of the sun gear shaft, several high-speed cameras at the bottom edge of the lifting frame are used to take high-speed images of the multiple planetary gears at different angles to facilitate the subsequent analysis of the steady state of the multiple planetary gears during rotation;

[0024] S6. Camera fill light: During the high-speed camera shooting process, fill light is provided by several fill lights at the bottom of the lifting frame;

[0025] S7. Physical parameter monitoring: Monitor and analyze the vibration, noise and temperature of the gear ring surface through vibration monitors, noise monitors and temperature monitors.

[0026] The beneficial effects of the present invention are:

[0027] The present invention places a multi-planetary gear to be subjected to structural steady-state analysis on the top of a fixed base, and assembles the ring gear, planetary gears, and sun gear of the multi-planetary gear on the top of the fixed base, and presses the ring gear of the multi-planetary gear against the top of the fixed base by lifting and lowering a pressing plate; then, the lifting frame is lowered downward, and the bottom end of the sun gear shaft is axially connected to the sun gear of the multi-planetary gear through a key connection, so as to facilitate power transmission, thereby realizing the solar energy rotation driven by a servo motor, and while the sun gear rotates, it drives each planetary gear to rotate by meshing with a plurality of planetary gears, and by adjusting the position of the rotating shaft on each sliding arm, the bottom end of each planetary gear shaft is axially connected to the sun gear of the multi-planetary gear through a key connection, thereby positioning each multi-planetary gear to rotate at a fixed position, and at the same time, the ring gear is synchronously driven to rotate on the top of the fixed base by the rotation of each multi-planetary gear. Specifically, the servo motor on the top of the lifting frame drives the sun gear shaft to rotate, and during the rotation of the sun gear shaft, each planetary gear of the multi-planetary gear is driven to rotate. During the rotation of the planetary gear, the planetary gear shaft is pressed to prevent it from bouncing, thereby effectively improving the rotation stability of the planetary gear.

[0028] Specifically, when the sun gear shaft is rotating, several high-speed cameras at the bottom edge of the lifting frame are used to take high-speed photos of the multiple planetary gears at different angles, which is convenient for later analysis of the steady state of the multiple planetary gears during rotation. The high-speed camera can take high-speed images of the transmission process between the solar energy, planetary gears, and ring gears, so that it is convenient for later manual judgment of the steady-state analysis of the multi-planetary gear structure during operation through the images. During the shooting process of the high-speed camera, several fill lights at the bottom of the lifting frame are used for fill light, which effectively improves the clarity of the high-speed camera shooting.

[0029] While the ring gear rotates on the top of the fixed base, it contacts the top surface of the fixed base through the bottom surface of the clamping plate. The vibration, noise and temperature of the ring gear surface are monitored through the vibration monitor, noise monitor and temperature monitor on the bottom surface of the clamping plate, which facilitates the analysis of the physical properties of the multi-planetary gear structure during the transmission operation.

[0030] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a front structural schematic diagram of the multi-planetary gear structure steady-state analysis device of the present invention;

[0032] Figure 2 It is a schematic diagram of the top view of the lifting frame of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the lifting frame of the present invention when viewed from above;

[0034] Figure 4 Schematic diagram of the front cross-sectional structure of the sliding arm of the present invention;

[0035] Figure 5 This invention is attached to the specification Figure 4 A partial enlarged view of point B;

[0036] Figure 6 This invention is attached to the specification Figure 5 A local enlarged view of point A;

[0037] Figure 7 It is a schematic diagram of the partial structure of the contact between the pressing plate and the fixed base surface of the present invention;

[0038] Figure 8 This is a schematic structural diagram of the multi-planetary gear structure of the present invention;

[0039] Figure 9 This is a flowchart of the steps of the method for steady-state analysis of a multi-planetary gear structure according to the present invention;

[0040] In the figure: fixed base 1, support frame 2, top support frame 3, electric push rod 1 4, lifting frame 5, servo motor 6, sun gear shaft 7, sliding arm 8, locking sleeve 1 9, planetary gear shaft 10, high-speed camera 11, fill light 12, pressing plate 13, electric push rod 2 14, sliding frame 15, electric push rod 3 16, push rod 17, guide slide hole 18, rotating shaft 19, locking sleeve 20, shaft hole 21, top limit plate 22, threaded rod 23, threaded sleeve 24, limit screw 25, hollow opening 26, threaded hole 27, pressing nut 28, roller steel ball 29, steel ball groove 30, vibration monitor 31, noise monitor 32, temperature monitor 33, shaft sleeve 34, pressure wheel plate 35. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0044] In the above description of the present invention, it should be noted that the terms "one side," "the other side," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0045] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted.

[0046] Example 1

[0047] See also Figure 1-9 , which is a technical solution provided by the present invention: a multi-planetary gear structure steady-state analysis device and analysis method, including a fixed base 1, two support frames 2 upright on the top of the fixed base 1 are fixedly installed on the top of the fixed base 1, a top support frame 3 is fixedly installed at the middle position of the top of the two support frames 2, a lifting frame 5 that can be lifted up and down is provided in the middle of the top support frame 3, a sun gear shaft 7 is provided in the middle of the lifting frame 5, multiple planetary gears are placed in the middle of the top of the fixed base 1, and a pressing plate 13 that can be lifted up and down is provided on the surface of the two support frames 2, and a vibration monitor 31, a noise monitor 32, and a temperature monitor 33 are provided on the bottom surface of each pressing plate 13, the pressing plate 13 is pressed against the top surface of the gear ring of the multi-planetary gear, and the vibration monitor 31, the noise monitor 32, and the temperature monitor 33 on the bottom surface of the pressing plate 13 are in contact with the top surface of the gear ring of the multi-planetary gear.

[0048] The present invention places a multi-planetary gear to be subjected to structural steady-state analysis on the top of a fixed base, and assembles the ring gear, planetary gears, and sun gear of the multi-planetary gear on the top of the fixed base, and presses the ring gear of the multi-planetary gear against the top of the fixed base by lifting and lowering a pressing plate; then, the lifting frame is lowered downward, and the bottom end of the sun gear shaft is axially connected to the sun gear of the multi-planetary gear through a key connection, so as to facilitate power transmission, thereby realizing the solar energy rotation driven by a servo motor, and while the sun gear rotates, it drives each planetary gear to rotate by meshing with a plurality of planetary gears, and by adjusting the position of the rotating shaft on each sliding arm, the bottom end of each planetary gear shaft is axially connected to the sun gear of the multi-planetary gear through a key connection, thereby positioning each multi-planetary gear to rotate at a fixed position, and at the same time, the ring gear is synchronously driven to rotate on the top of the fixed base by the rotation of each multi-planetary gear. Specifically, the servo motor on the top of the lifting frame drives the sun gear shaft to rotate, and during the rotation of the sun gear shaft, each planetary gear of the multi-planetary gear is driven to rotate. During the rotation of the planetary gear, the planetary gear shaft is pressed to prevent it from bouncing, thereby effectively improving the rotation stability of the planetary gear.

[0049] Specifically, when the sun gear shaft is rotating, several high-speed cameras at the bottom edge of the lifting frame are used to take high-speed photos of the multiple planetary gears at different angles, which is convenient for later analysis of the steady state of the multiple planetary gears during rotation. The high-speed camera can take high-speed images of the transmission process between the solar energy, planetary gears, and ring gears, so that it is convenient for later manual judgment of the steady-state analysis of the multi-planetary gear structure during operation through the images. During the shooting process of the high-speed camera, several fill lights at the bottom of the lifting frame are used for fill light, which effectively improves the clarity of the high-speed camera shooting.

[0050] While the ring gear rotates on the top of the fixed base, it contacts the top surface of the fixed base through the bottom surface of the clamping plate. The vibration, noise and temperature of the ring gear surface are monitored through the vibration monitor, noise monitor and temperature monitor on the bottom surface of the clamping plate, which facilitates the analysis of the physical properties of the multi-planetary gear structure during the transmission operation.

[0051] Specifically, in this embodiment, a sliding frame 15 is slidably connected to the surface of each support frame 2, and a third electric push rod 16 is fixedly installed on the surface of the sliding frame 15. The third electric push rod 16 has a push rod extending outward, and the pressing plate 13 is fixed to the top of the push rod of the third electric push rod 16. A second electric push rod 14 is fixedly installed on the surface of each support frame 2. The second electric push rod 14 has a push rod extending downward, and the bottom of the push rod of the second electric push rod 14 is fixed to the top surface of the sliding frame 15. The third electric push rod 16 is used to adjust the height of the pressing plate 13, and the second electric push rod 14 controls the horizontal extension length of the pressing plate 13, thereby facilitating the adjustment of the appropriate position of the pressing plate 13 according to different gear ring diameters.

[0052] Specifically, in this embodiment, a plurality of electric push rods 4 are fixed to the top of the top support frame 3, each electric push rod 4 has a push rod 17 extending downward, the bottom of the push rod 17 is fixed to the top surface of the lifting frame 5, and the lifting height of the lifting frame 5 is controlled by the electric push rod 4.

[0053] Specifically, in this embodiment, the lifting frame 5 is configured as a disc structure, a servo motor 6 is fixed to the top of the lifting frame 5 , the servo motor 6 has an output shaft extending downward, and the sun gear shaft 7 and the output shaft are an integrated structure.

[0054] Specifically, in this embodiment, a plurality of high-speed cameras 11 are arranged at equal intervals on the circumference of the bottom edge of the lifting frame 5, and a fill light 12 is arranged between two adjacent high-speed cameras 11, so that when the sun gear shaft is rotating, the plurality of high-speed cameras on the bottom edge of the lifting frame can respectively take high-speed photos of the multiple planetary gears at different angles, which is convenient for later analysis of the steady state during the rotation of the multiple planetary gears. The high-speed camera can take high-speed photos of the transmission process between the solar energy, the planetary gears, and the ring gear, so that it is convenient for later manual judgment of the steady state analysis of the working process of the multiple planetary gear structure through the images. During the shooting process of the high-speed camera, the plurality of fill lights at the bottom of the lifting frame are used for fill light, which effectively improves the clarity of the high-speed camera shooting.

[0055] Specifically, in this embodiment, the outer wall of the lifting frame 5 is provided with a plurality of sliding arms 8 at equal intervals around the circumference. A guide sliding hole 18 with a straight hole structure is opened on the surface of each sliding arm 8. The straight hole surface of the sliding arm 8 is slidably connected with a rotating shaft 19 with an adjustable position. The bottom end of the rotating shaft 19 is fixedly installed with a planetary gear shaft 10. The planetary gear shaft 10 is axially connected to the planetary gear and transmits torque through a key connection.

[0056] Specifically, in this embodiment, the rotating shaft 19 includes a shaft sleeve 34 arranged on the outer wall of the rotating shaft 19, the outer wall of the shaft sleeve 34 is provided with a thread, the shaft sleeve 34 is installed in the guide slide hole 18, the outer wall of the shaft sleeve 34 is provided with a thread, and the outer wall of the shaft sleeve 34 is connected to the locking sleeve 9 and the locking sleeve 20 through a thread, and the locking sleeve 9 and the locking sleeve 20 are respectively installed on the upper and lower ends of the sliding arm 8, and the locking sleeve 9 and the locking sleeve 20 are used to facilitate the adjustment of the position of the rotating shaft 19 on the surface of the sliding arm 8, and through the locking sleeve 9 and the locking sleeve 20.

[0057] Specifically, in this embodiment, a through shaft hole 21 is opened in the middle of the shaft sleeve 34, and the rotating shaft 19 is rotatably connected in the shaft hole 21. The bottom end of the rotating shaft 19 rotatably connected in the shaft hole 21 is provided with a top limit plate 22, and the top end of the rotating shaft 19 rotatably connected in the shaft hole 21 is installed with a pressure wheel plate 35. The top end of the rotating shaft 19 is provided with a threaded surface, and the top end of the rotating shaft 19 is threadedly connected to a clamping nut 28, and the clamping nut 28 is provided above the pressure wheel plate 35 at the top end of the rotating shaft 19.

[0058] Specifically, in this embodiment, a plurality of steel ball grooves 30 are provided at equal intervals on the top of the shaft sleeve 34 . A roller steel ball 29 is rotatably connected in each steel ball groove 30 , and the pressure wheel plate 35 is pressed against the top surface of the roller steel ball 29 .

[0059] Specifically, in this embodiment, a threaded rod 23 is provided at the bottom end of the rotating shaft 19, and a hollow opening 26 with a circular hole structure is provided at the bottom end of the threaded rod 23. The outer wall of the threaded rod 23 is provided with a threaded surface, and the top of the planetary gear rotating shaft 10 is provided with a threaded sleeve 24. The inner wall of the threaded sleeve 24 is provided with a threaded surface matching the outer wall of the threaded rod 23. The inner wall of the threaded rod 23 is connected to the bottom end of the outer wall of the threaded rod 23 by a thread. The surface of the threaded sleeve 24 and the surface of the threaded rod 23 are both provided with a through threaded hole 27. The threaded hole 27 on the surface of the threaded sleeve 24 and the threaded hole 27 on the surface of the threaded rod 23 are internally threadedly connected to the limit screw 25.

[0060] Example 2

[0061] See also Figure 1-9, which is another technical solution provided by the present invention. This embodiment is similar to the above-mentioned embodiment 1, and the similarities are not elaborated in this embodiment. The specific differences are:

[0062] A multi-planetary gear structure steady-state analysis device also provides an analysis method, which mainly includes the following steps:

[0063] S1. Multi-planetary gear installation: Place the multi-planetary gear to be analyzed for structural steady-state on top of the fixed base 1, and assemble the multi-planetary gear ring gear, planetary gears, and sun gear on top of the fixed base 1. Lift and lower the pressing plate 13 downward to press the multi-planetary gear ring gear against the top of the fixed base 1.

[0064] S2. Power connection of the sun gear: the lifting frame 5 descends, and the bottom end of the sun gear shaft 7 is connected to the sun gear of the multi-planetary gear through a key connection;

[0065] S3. Planetary gear compression connection: Adjust the position of the rotating shaft 19 on each sliding arm 8 so that the bottom end of each planetary gear shaft 10 is connected to the sun gear of the multi-planetary gear through a key connection, driving the ring gear to rotate on the top of the fixed base 1;

[0066] S4, multi-planetary gear drive rotation: The servo motor 6 at the top of the lifting frame 5 drives the sun gear shaft 7 to rotate. During the rotation of the sun gear shaft 7, each of the multiple planetary gears is driven to rotate. During the rotation of the planetary gears, they are pressed tightly by the planetary gear shaft 10 to prevent them from jumping;

[0067] S5. Steady-state image analysis: During the rotation of the sun gear shaft 7, a plurality of high-speed cameras 11 at the bottom edge of the lifting frame 5 are used to take high-speed images of the multiple planetary gears at different angles to facilitate the subsequent analysis of the steady state of the multiple planetary gears during rotation;

[0068] S6, camera fill light: During the shooting process of the high-speed camera 11, fill light is provided by a plurality of fill lights 12 at the bottom of the lifting frame 5;

[0069] S7. Physical parameter monitoring: The vibration, noise and temperature of the gear ring surface are monitored and analyzed by the vibration monitor 31 , the noise monitor 32 and the temperature monitor 33 .

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device and method for analyzing the steady state of a multi-planetary gear structure, comprising a fixed foot (1), characterized in that: The top of the fixed foot (1) is fixedly mounted with two support frames (2) vertically disposed on the top of the fixed foot (1); a top support frame (3) is fixedly mounted at the middle position of the top of the two support frames (2); a lifting frame (5) that is lifted and lowered reciprocatingly is provided in the middle of the top support frame (3); a sun gear shaft (7) is provided in the middle of the lifting frame (5); a multi-planetary gear is placed in the middle of the top of the fixed foot (1); a pressing plate (13) that is lifted and lowered reciprocatingly is provided on the surface of the two support frames (2); a vibration monitor (31), a noise monitor (32), and a temperature monitor (33) are provided on the bottom surface of each pressing plate (13); the pressing plate (13) is pressed against the top surface of the gear ring of the multi-planetary gear; the vibration monitor (31), the noise monitor (32), and the temperature monitor (33) on the bottom surface of the pressing plate (13) are in contact with the top surface of the gear ring of the multi-planetary gear.

2. The device and method for analyzing the steady-state of a multi-planetary gear structure according to claim 1, characterized in that: The surface of each support frame (2) is slidably connected to a sliding frame (15), and the surface of the sliding frame (15) is fixedly installed with an electric push rod three (16), and the electric push rod three (16) has a push rod extending outward, and the clamping plate (13) is fixed to the top of the push rod of the electric push rod three (16). The surface of each support frame (2) is fixedly installed with an electric push rod two (14), and the electric push rod two (14) has a push rod extending downward, and the bottom end of the push rod of the electric push rod two (14) is fixed to the top surface of the sliding frame (15).

3. The device and method for analyzing the steady-state of a multi-planetary gear structure according to claim 2, characterized in that: A plurality of electric push rods (4) are fixed to the top of the top support frame (3), and each of the electric push rods (4) has a push rod (17) extending downward, and the bottom of the push rod (17) is fixed to the top surface of the lifting frame (5).

4. The device and method for analyzing the steady-state of a multi-planetary gear structure according to claim 1, characterized in that: The lifting frame (5) is configured as a disc structure, a servo motor (6) is fixed to the top of the lifting frame (5), an output shaft extends downward from the servo motor (6), and the sun gear rotating shaft (7) and the output shaft are an integrated structure; A plurality of high-speed cameras (11) are arranged at equal intervals on the circumference of the bottom edge of the lifting frame (5), and a fill light (12) is arranged between two adjacent high-speed cameras (11).

5. The device and method for analyzing the steady-state of a multi-planetary gear structure according to claim 4, characterized in that: The outer wall of the lifting frame (5) is provided with a plurality of sliding arms (8) at equal intervals around the circumference, and a guide sliding hole (18) with a straight hole structure is opened on the surface of each sliding arm (8). The straight hole surface of the sliding arm (8) is slidably connected to a rotating shaft (19) with an adjustable position, and a planetary gear shaft (10) is fixedly installed on the bottom end of the rotating shaft (19).

6. The device and method for analyzing the steady-state of a multi-planetary gear structure according to claim 5, characterized in that: The rotating shaft (19) includes a shaft sleeve (34) arranged on the outer wall of the rotating shaft (19), the outer wall of the shaft sleeve (34) is provided with a thread, the shaft sleeve (34) is installed in the guide sliding hole (18), the outer wall of the shaft sleeve (34) is provided with a thread, the outer wall of the shaft sleeve (34) is connected to a locking sleeve (9) and a locking sleeve (20) through a thread, and the locking sleeve (9) and the locking sleeve (20) are respectively installed on the upper and lower ends of the sliding arm (8).

7. The device and method for analyzing the steady-state of a multi-planetary gear structure according to claim 6, characterized in that: A through shaft hole (21) is provided in the middle of the shaft sleeve (34), and the rotating shaft (19) is rotatably connected in the shaft hole (21). A top limit plate (22) is provided at the bottom end of the rotating shaft (19) rotatably connected in the shaft hole (21), and a pressure wheel plate (35) is installed at the top end of the rotating shaft (19) rotatably connected in the shaft hole (21). The top end of the rotating shaft (19) is provided with a threaded surface, and the top end of the rotating shaft (19) is connected to a clamping nut (28) through a thread, and the clamping nut (28) is provided above the pressure wheel plate (35) at the top end of the rotating shaft (19).

8. The device and method for analyzing the steady-state of a multi-planetary gear structure according to claim 7, characterized in that: The top end of the shaft sleeve (34) is provided with a plurality of steel ball grooves (30) at equal intervals around the circumference, and a roller steel ball (29) is rotatably connected in each of the steel ball grooves (30), and the pressure wheel plate (35) is pressed against the top surface of the roller steel ball (29).

9. The device and method for analyzing the steady-state of a multi-planetary gear structure according to claim 5, characterized in that: The bottom end of the rotating shaft (19) is provided with a threaded rod (23), the bottom end of the threaded rod (23) is provided with a hollow opening (26) with a circular hole structure, the outer wall of the threaded rod (23) is provided with a threaded surface, the top end of the planetary gear rotating shaft (10) is provided with a threaded sleeve (24), the inner wall of the threaded sleeve (24) is provided with a threaded surface matching the outer wall of the threaded rod (23), the inner wall of the threaded rod (23) is connected to the bottom end of the outer wall of the threaded rod (23) by threading, the surface of the threaded sleeve (24) and the surface of the threaded rod (23) are both provided with a through threaded hole (27), and the threaded hole (27) on the surface of the threaded sleeve (24) and the threaded hole (27) on the surface of the threaded rod (23) are internally threadedly connected to a limiting screw (25).

10. A multi-planetary gear structure steady-state analysis device according to any one of claims 3, 8, and 9, characterized in that: An analysis method is also provided, which mainly includes the following steps: S1. Multi-planetary gear installation: The multi-planetary gear to be subjected to structural steady-state analysis is placed on the top of the fixed base (1), and the ring gear, planetary gears, and sun gear of the multi-planetary gear are assembled on the top of the fixed base (1), and the ring gear of the multi-planetary gear is pressed against the top of the fixed base (1) by lifting and lowering the pressing plate (13); S2. Power connection of the sun gear: the lifting frame (5) descends downward, and the bottom end of the sun gear shaft (7) is connected to the sun gear of the multi-planetary gear through a key connection; S3. Planetary gear pressing connection: adjust the position of the rotating shaft (19) on each sliding arm (8) so that the bottom end of each planetary gear shaft (10) is connected to the sun gear of the multi-planetary gear through a key connection, driving the ring gear to rotate on the top of the fixed base (1); S4, multi-planetary gear drive rotation: the servo motor (6) at the top of the lifting frame (5) drives the sun gear shaft (7) to rotate, and the sun gear shaft (7) drives each of the multi-planetary gears to rotate during the rotation process. During the rotation process of the planetary gears, the planetary gears are pressed tightly by the planetary gear shaft (10) and do not jump; S5. Steady-state image analysis: During the rotation of the sun gear shaft (7), a plurality of high-speed cameras (11) at the bottom edge of the lifting frame (5) are used to take high-speed images of the multiple planetary gears at different angles to facilitate the subsequent analysis of the steady state of the multiple planetary gears during rotation; S6, camera fill light: during the shooting process of the high-speed camera (11), fill light is provided by a plurality of fill lights (12) at the bottom of the lifting frame (5); S7. Physical parameter monitoring: The vibration, noise and temperature of the gear ring surface are monitored and analyzed through a vibration monitor (31), a noise monitor (32) and a temperature monitor (33).

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