Planetary gearbox gear strength analysis method

Abstract

The invention discloses a planetary gear box gear strength analysis method, and relates to the technical field of planetary gear box gears, and the method comprises the following steps: S1, gear box installation and fixation: installing and fixing a planetary gear box to be subjected to strength analysis on a gear box base, and locking and fixing the planetary gear box through a locking screw; and S2, gearbox power connection: according to the installation position of the planetary gearbox, a driven wheel is installed on the surface of a power shaft extending out of the surface of the planetary gearbox, the surface of the driven wheel is in meshed connection with a transmission chain, and the other end of the transmission chain is connected with a driving wheel of a first servo motor. According to the gear tooth bending strength test, the gear tooth bending strength of an internal gear of a planetary gearbox is tested, power is input into the planetary gearbox through rotation of a driving wheel, the rotation resistance of an outer ring of the planetary gearbox is controlled through resistance of a resistance gear, and the resistance is tested for a period of time; and the bending degree of gear teeth in the planetary gearbox is observed.

Description

Technical Field

[0001] The present invention relates to the technical field of planetary gearbox gears, and in particular to a planetary gearbox gear strength analysis method. Background Art

[0002] A planetary gearbox is a mechanical transmission device consisting of a sun gear, planetary gears, a planetary carrier, and a ring gear. It achieves power transmission and speed conversion through the meshing of gears. It has the characteristics of compact structure, high transmission efficiency, and strong load-bearing capacity. It is widely used in industries such as industry, automobiles, robotics, aerospace, etc.

[0003] The basic structure and operating principle include the sun gear, located in the center and connected to the input shaft, serving as the power input component. The planetary gears rotate around the sun gear (both rotating and revolving around it), transmitting power through the planetary carrier. The planetary carrier supports the planetary gears and transmits power to the output shaft. The ring gear (internal gear) is a fixed or floating external ring gear that meshes with the planetary gears to form the transmission system.

[0004] Gear strength analysis mainly includes the following types: gear tooth bending strength, tooth surface contact strength, shear strength, tooth surface bonding strength;

[0005] Among them, gear tooth bending strength: This is the ability of the gear to resist fracture when subjected to bending force. Gear tooth bending strength calculation is to evaluate the reliability of the gear when subjected to bending load.

[0006] Tooth contact strength: This is the ability of gears to resist damage to the tooth surface caused by contact stress during meshing. Tooth contact strength calculations include contact fatigue strength and static strength, and failure modes include pitting, scuffing, and wear.

[0007] Shear strength: This is the gear's ability to resist shear forces. Although shear strength calculations are not as common as bending strength and contact strength in gear strength analysis, they still need to be considered in certain specific working conditions.

[0008] The tooth surface bonding strength is the ability of the gear to resist tooth surface bonding under high speed and heavy load conditions. Bonding is caused by the high speed and heavy load causing the tooth surface temperature to rise, the oil film to rupture, and the metal to stick and tear.

[0009] At present, various strength analyses of planetary gearbox gears are mainly performed by using a single device to perform a single test on a single indicator. However, for the multi-parameter detection and analysis of multiple indicators, the method of using a single device to perform a single indicator test on the gears of the planetary gearbox obviously cannot meet the test and analysis requirements. Therefore, it is necessary to provide a planetary gearbox gear strength analysis method. Summary of the Invention

[0010] In view of this, the purpose of the present invention is to provide a planetary gearbox gear strength analysis method to solve the technical problem that the various strength analyses of planetary gearbox gears are currently mainly carried out by using a single device to perform a single test on a single indicator, while for such multiple parameter detection and analysis of multiple indicators, the method of using a single device to perform a single indicator test on the planetary gearbox gear is obviously unable to meet the testing and analysis requirements.

[0011] To achieve the above object, the present invention is implemented through the following technical solutions:

[0012] A planetary gearbox gear strength analysis method, the planetary gearbox gear strength analysis method mainly includes the following steps:

[0013] S1. Gearbox installation and fixation: Install and fix the planetary gearbox to be strength analyzed on the gearbox base and lock it with locking screws;

[0014] S2. Gearbox power connection: According to the installation position of the planetary gearbox, a driven wheel is installed on the surface of the power shaft extending from the surface of the planetary gearbox. The surface of the driven wheel is engaged with the transmission chain, and the other end of the transmission chain is connected to the driving wheel of servo motor 1;

[0015] S3, gearbox resistance connection: according to the installation position of the planetary gearbox, a meshing resistance gear is set at the bottom of the planetary gearbox installation;

[0016] S4, resistance adjustment: the resistance gear set in step S3 controls the rotational resistance of the resistance gear by increasing the resistance;

[0017] S5. Strength test of the planetary gearbox: Test the strength of the tooth bending in step S4. Input power into the planetary gearbox by rotating the driving wheel. Control the rotational resistance of the outer ring of the planetary gearbox through the resistance of the resistance gear. Continue testing for one hour to observe the gear structure inside the planetary gearbox and determine the strength of each gear inside the planetary gearbox.

[0018] The above steps S1-S5 are completed in cooperation with a planetary gearbox gear strength analysis device, which includes a fixed base, two gearbox bases are fixedly installed on the top of the fixed base, and a resistance gear is provided in the middle position of the two gearbox bases. The planetary gearbox to be strength analyzed is installed on the top of the two gearbox bases, and a servo motor is provided at one end of the planetary gearbox installed on the top of the gearbox base to drive rotation. A gear ring is provided on the outer wall of the planetary gearbox, and the gear ring is meshed with the resistance gear. A clamping plate for controlling the size of the resistance is provided at one end of the resistance gear.

[0019] As a preferred technical solution of the present invention, a fixed sleeve with a circular hole structure is provided at the top of one of the gearbox bases, and the power shaft of the planetary gearbox installed at the top of the two gearbox bases passes through the circular hole of the fixed sleeve and extends to the other end of the fixed sleeve, and a friction wheel is installed on the surface of the extended power shaft.

[0020] As a preferred technical solution of the present invention, the clamping plate includes two hinged ears arranged on the surface of the gear box base. There are two clamping plates in total. The top of each clamping plate is hinged to the corresponding hinged ear. The bottom of each hinged ear is provided with a reciprocating sliding block that slides back and forth. The two corresponding hinged ears are clamped and clamped together by the two reciprocating sliding blocks that slide back and forth.

[0021] As a preferred technical solution of the present invention, each of the holding plates is a semicircular bend with an arc-shaped structure, and a friction plate is provided at the bottom end of each of the holding plates.

[0022] As a preferred technical solution of the present invention, the reciprocating sliding block includes a reciprocating sliding frame fixed to the top of a fixed base, and the top surface of the reciprocating sliding frame is provided with a linear linear slide with a linear groove structure. The two reciprocating sliding blocks are respectively slidably connected in the linear linear slide, and a threaded screw is rotatably connected inside the linear linear slide. One end of the threaded screw is provided with a servo motor 2 to drive the rotation, and the surface of the threaded screw is threadedly connected to two screw sleeves, and the two reciprocating sliding blocks are respectively fixed to the corresponding screw sleeve surfaces.

[0023] As a preferred technical solution of the present invention, the bottom end of each of the clamping plates is hinged with a movable rod, the top end of the movable rod is provided with a hinge shaft, the hinge shaft is rotatably connected to the bottom end of the clamping plate, and a straight slot hole is provided on the surface of each of the reciprocating sliding blocks, the bottom end of the movable rod is rotatably connected to the straight slot hole, and the top end of the movable rod rotatably connected to the straight slot hole is slidably connected to the straight slot hole.

[0024] As a preferred technical solution of the present invention, a driven wheel is fixedly mounted on the surface of the power shaft of the planetary gearbox, a servo motor 1 is fixedly mounted on the top of the fixed base, an output shaft extends outward from the servo motor 1, a driving wheel is fixedly mounted on the surface of the output shaft of the servo motor 1, and a transmission chain is arranged between the driving wheel and the driven wheel.

[0025] As a preferred technical solution of the present invention, gear shafts are provided at both ends of the resistance gear, the surface of the gear shaft is rotatably connected to a gear shaft bracket, and the gear shaft bracket is fixed to the top of the fixed base.

[0026] As a preferred technical solution of the present invention, a supporting foot is fixedly installed on the bottom end of the fixed base.

[0027] The beneficial effects of the present invention are:

[0028] The present invention relates to the gear tooth bending strength test: the gear tooth bending strength of the internal gear of the planetary gearbox is tested by rotating the driving wheel to input power into the planetary gearbox, and the resistance of the resistance gear is used to control the rotation resistance of the outer ring of the planetary gearbox. The resistance test is carried out for a period of time to observe the bending degree of the gear teeth inside the planetary gearbox;

[0029] Tooth surface contact strength: This test tests the tooth surface contact strength of the internal gears of a planetary gearbox. Power is input into the planetary gearbox through the rotation of the driving wheel. The resistance of the resistance gear controls the rotational resistance of the outer ring of the planetary gearbox. The resistance test is conducted for a period of time to observe the degree of contact damage of the internal gear surfaces of the planetary gearbox, thereby determining the tooth surface contact strength of the internal gears of the planetary gearbox.

[0030] Tooth bending strength: This is a test of the tooth bending strength of the gears inside the planetary gearbox. Power is input into the planetary gearbox through the rotation of the driving wheel. The resistance of the resistance gear controls the rotation resistance of the outer ring of the planetary gearbox. The resistance test is carried out for a period of time to observe the degree of bending of the gear teeth inside the planetary gearbox, thereby determining the tooth bending strength of the gears inside the planetary gearbox.

[0031] Shear strength: This is a test of the shear strength of the gears inside the planetary gearbox. Power is input into the planetary gearbox through the rotation of the driving wheel. The resistance of the resistance gear controls the rotation resistance of the outer ring of the planetary gearbox. After a period of resistance testing, the gear teeth inside the planetary gearbox are observed to see if they are broken, thereby determining the shear strength of the gears inside the planetary gearbox.

[0032] Tooth surface bonding strength: This test tests the bonding strength of the gears inside the planetary gearbox. Power is input into the planetary gearbox through the rotation of the driving wheel. The resistance of the resistance gear controls the rotation resistance of the outer ring of the planetary gearbox. After a period of resistance testing, the gear teeth inside the planetary gearbox are observed to see if there is any bonding or melting, thereby determining the shear strength of the gears inside the planetary gearbox.

[0033] The service life of the gear teeth inside the planetary gearbox is measured by rotating the driving wheel to input power into the planetary gearbox, and controlling the rotation resistance of the outer ring of the planetary gearbox through the resistance of the resistance gear. The resistance is tested for a period of time to observe whether the gear teeth inside the planetary gearbox are damaged, thereby determining the service life of the gear teeth inside the planetary gearbox.

[0034] 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

[0035] Figure 1 This is a flow chart of the steps of the planetary gearbox gear strength analysis method of the present invention;

[0036] Figure 2 This is a front view of the structure of the planetary gearbox gear strength analysis device of the present invention. Figure 1 ;

[0037] Figure 3 This is a front view of the structure of the planetary gearbox gear strength analysis device of the present invention. Figure 2 ;

[0038] Figure 4 Schematic diagram of the structural connection between the holding plate, friction wheel and reciprocating sliding block of the present invention Figure 1 ;

[0039] Figure 5 Schematic diagram of the structural connection between the holding plate, friction wheel and reciprocating sliding block of the present invention Figure 2 ;

[0040] Figure 6 This invention is attached to the specification Figure 5 A partial enlarged view of point B;

[0041] Figure 7 This invention is attached to the specification Figure 2 And the instruction manual Figure 3 A local enlarged view of point A;

[0042] Figure 8 This is a schematic diagram of the cross-sectional structure connection between the ring gear, sun gear, and planetary gears inside the planetary gearbox of the present invention;

[0043] In the figure: fixed base 1, supporting foot 2, servo motor 1 3, driving wheel 4, transmission chain 5, driven wheel 6, fixed sleeve 7, planetary gearbox 8, ring gear 9, gearbox base 10, gear shaft 11, gear shaft bracket 12, resistance gear 13, holding plate 14, hinged support ear 15, reciprocating sliding frame 16, friction wheel 17, hinged shaft 18, reciprocating sliding block 19, straight slot hole 20, movable rod 21, servo motor 2 22, friction plate 23, linear linear slide 24, threaded screw 25, screw sleeve 26. DETAILED DESCRIPTION

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] Example 1

[0050] See also Figure 1-8 , a technical solution provided by the present invention: a planetary gearbox gear strength analysis method, the planetary gearbox gear strength analysis method mainly includes the following steps:

[0051] S1. Gearbox (8) installation and fixation: The planetary gearbox (8) to be strength analyzed is installed and fixed on the gearbox base (10), and is locked and fixed by locking screws;

[0052] S2, gearbox power connection: according to the installation position of the planetary gearbox (8), a driven wheel (6) is installed on the surface of the power shaft extending from the surface of the planetary gearbox (8), the surface of the driven wheel (6) is meshed with the transmission chain (5), and the other end of the transmission chain (5) is connected to the driving wheel (4) of the servo motor (3);

[0053] S3, gear box resistance connection: according to the installation position of the planetary gear box (8), a meshing resistance gear (13) is set at the bottom of the planetary gear box (8);

[0054] S4, resistance adjustment: the resistance gear (13) set in step S3 controls the rotational resistance of the resistance gear (13) by increasing the resistance;

[0055] S5. Strength test of the planetary gearbox (8): The strength of the gear tooth bending in step S4 is tested. Power is input into the interior of the planetary gearbox (8) by rotating the driving wheel (4). The rotation resistance of the outer ring (9) of the planetary gearbox (8) is controlled by the resistance of the resistance gear (13). The test is continued for one hour to observe the gear tooth structure inside the planetary gearbox (8) and determine the strength of each gear inside the planetary gearbox (8).

[0056] S5, gear tooth bending strength test: the strength of the gear tooth bending in step S4 is tested, power is inputted into the interior of the planetary gear box (8) by rotating the driving wheel (4), and the rotation resistance of the outer ring (9) of the planetary gear box (8) is controlled by the resistance of the resistance gear (13). The resistance test is carried out for a period of time, and the degree of gear tooth bending inside the planetary gear box (8) is observed;

[0057] Tooth surface contact strength: The tooth surface contact strength of the internal gears of the planetary gear box (8) is tested by rotating the driving wheel (4) to input power into the interior of the planetary gear box (8), and controlling the rotational resistance of the outer ring (9) of the planetary gear box (8) through the resistance of the resistance gear (13). The resistance test is carried out for a period of time, and the degree of contact damage of the internal gear surfaces of the planetary gear box (8) is observed, thereby determining the tooth surface contact strength of the internal gears of the planetary gear box (8);

[0058] The gear tooth bending strength is tested for the gear tooth bending strength of the internal gear of the planetary gear box (8). The driving wheel (4) is rotated to input power into the internal of the planetary gear box (8). The resistance of the resistance gear (13) is used to control the rotation resistance of the outer ring (9) of the planetary gear box (8). The resistance test is carried out for a period of time, and the degree of bending of the gear teeth inside the planetary gear box (8) is observed, thereby determining the gear tooth bending strength of the internal gear of the planetary gear box (8);

[0059] Shear strength, a shear strength test of the internal gears of the planetary gearbox (8), wherein the driving wheel (4) is rotated to input power into the interior of the planetary gearbox (8), and the rotational resistance of the outer ring (9) of the planetary gearbox (8) is controlled by the resistance of the resistance gear (13). The resistance test is carried out for a period of time, and the internal teeth of the planetary gearbox (8) are observed to see whether they are broken, thereby determining the shear strength of the internal gears of the planetary gearbox (8);

[0060] Tooth surface bonding strength: The tooth surface bonding strength of the internal gears of the planetary gearbox (8) is tested by rotating the driving wheel (4) to input power into the interior of the planetary gearbox (8), and controlling the rotational resistance of the outer ring (9) of the planetary gearbox (8) through the resistance of the resistance gear (13). The resistance test is carried out for a period of time to observe whether the gear teeth inside the planetary gearbox (8) are bonded and melted, thereby determining the shear strength of the internal gears of the planetary gearbox (8);

[0061] The service life of the gear teeth of the internal gears of the planetary gear box (8) is measured by rotating the driving wheel (4) to input power into the interior of the planetary gear box (8), and controlling the rotational resistance of the outer ring (9) of the planetary gear box (8) through the resistance of the resistance gear (13). The resistance is tested for a period of time to observe whether the gear teeth inside the planetary gear box (8) are damaged, thereby determining the service life of the gear teeth inside the planetary gear box (8).

[0062] Example 2

[0063] See also Figure 1-8 , 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:

[0064] The above steps S1-S5 are completed in cooperation with a planetary gearbox gear strength analysis device, which includes a fixed base (1), two gearbox bases (10) are fixedly installed on the top of the fixed base (1), and a resistance gear (13) is provided in the middle position of the two gearbox bases (10). The planetary gearbox to be strength analyzed is installed on the top of the two gearbox bases (10), and a servo motor (3) is provided at one end of the planetary gearbox installed on the top of the gearbox base (10) to drive the rotation. The outer wall of the planetary gearbox is provided with a gear ring (9), and the gear ring (9) is meshed with the resistance gear (13). One end of the resistance gear (13) is provided with a clamping plate (14) for controlling the resistance size.

[0065] Specifically, in this embodiment, the driving wheel (4) is rotated to input power into the interior of the planetary gearbox (8), and the resistance of the resistance gear (13) is used to control the rotation resistance of the outer ring (9) of the planetary gearbox (8). The test is continued for one hour to observe the gear tooth structure inside the planetary gearbox (8) and determine the strength of each gear inside the planetary gearbox (8).

[0066] A fixing sleeve (7) with a circular hole structure is provided at the top of one of the gearbox bases (10), and a power shaft of a planetary gearbox installed at the top of the two gearbox bases (10) passes through the circular hole of the fixing sleeve (7) and extends to the other end of the fixing sleeve (7). A friction wheel (17) is installed on the surface of the extended power shaft to facilitate the clamping of the clamping plate (14).

[0067] The clamping piece (14) includes two hinged hanging ears (15) arranged on the surface of the gear box base (10), and there are two clamping pieces (14) in total. The top of each clamping piece (14) is hinged to the corresponding hinged hanging ear (15), and the bottom of each hinged hanging ear (15) is provided with a reciprocating sliding block (19) for pulling. The two corresponding hinged hanging ears (15) are clamped and clamped together by the two reciprocating sliding blocks (19), thereby increasing or decreasing the resistance to the rotation of the friction wheel (17), thereby testing the strength of the gears inside the planetary gear box.

[0068] Each of the clamping plates (14) is a semicircular bend with an arc-shaped structure. A friction plate (23) is provided at the bottom end of each of the clamping plates (14). The friction plate (23) is made of hard alloy and is wear-resistant and has a strong clamping force.

[0069] The reciprocating sliding block (19) includes a reciprocating sliding frame (16) fixed to the top of the fixed base (1), the top surface of the reciprocating sliding frame (16) is provided with a linear linear slide (24) with a linear groove structure, and the two reciprocating sliding blocks (19) are respectively slidably connected in the linear linear slide (24), and the linear linear slide (24) is internally connected with a threaded screw (25) for rotation, one end of the threaded screw (25) is provided with a servo motor (22) for driving rotation, the surface of the threaded screw (25) is threadedly connected to two screw sleeves (26), and the two reciprocating sliding blocks (19) are respectively fixed to the surface of the corresponding screw sleeve (26). The two reciprocating sliding blocks (19) are controlled to synchronously reciprocate horizontally, thereby effectively improving the control of the resistance size.

[0070] The bottom end of each of the holding pieces (14) is hinged with a movable rod (21), and the top end of the movable rod (21) is provided with a hinge shaft (18), and the hinge shaft (18) is rotatably connected to the bottom end of the holding piece (14). A straight slot hole (20) is provided on the surface of each of the reciprocating sliding blocks (19), and the bottom end of the movable rod (21) is rotatably connected to the straight slot hole (20), and the top end of the movable rod (21) rotatably connected to the straight slot hole (20) is slidably connected to the straight slot hole (20), so as to improve the flexibility of the movement of each holding piece (14).

[0071] A driven wheel (6) is fixedly mounted on the surface of the power shaft of the planetary gearbox, a servo motor (3) is fixedly mounted on the top of the fixed base (1), an output shaft is extended outward from the servo motor (3), a driving wheel (4) is fixedly mounted on the surface of the output shaft of the servo motor (3), and a transmission chain (5) is provided between the driving wheel (4) and the driven wheel (6) to facilitate driving the power shaft of the planetary gearbox to rotate.

[0072] Gear shafts (11) are provided at both ends of the resistance gear (13), and the surface of the gear shaft (11) is rotatably connected to a gear shaft bracket (12). The gear shaft bracket (12) is fixed to the top end of the fixed base (1), thereby increasing the rotation speed of the resistance gear (13).

[0073] A supporting foot (2) is fixedly mounted on the bottom end of the fixed base (1) to improve the placement firmness of the fixed base (1).

[0074] 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 planetary gearbox gear strength analysis method, characterized by: The planetary gearbox gear strength analysis method mainly includes the following steps: S1. Gearbox installation and fixation: Install and fix the planetary gearbox to be strength analyzed on the gearbox base and lock it with locking screws; S2. Gearbox power connection: According to the installation position of the planetary gearbox, a driven wheel is installed on the surface of the power shaft extending from the surface of the planetary gearbox. The surface of the driven wheel is engaged with the transmission chain, and the other end of the transmission chain is connected to the driving wheel of servo motor 1; S3, gearbox resistance connection: according to the installation position of the planetary gearbox, a meshing resistance gear is set at the bottom of the planetary gearbox installation; S4, resistance adjustment: the resistance gear set in step S3 controls the rotational resistance of the resistance gear by increasing the resistance; S5. Strength test of the planetary gearbox: Test the strength of the tooth bending in step S4. Input power into the planetary gearbox by rotating the driving wheel. Control the rotational resistance of the outer ring of the planetary gearbox through the resistance of the resistance gear. Continue testing for one hour to observe the gear structure inside the planetary gearbox and determine the strength of each gear inside the planetary gearbox.

2. A planetary gearbox gear strength analysis method according to claim 1, characterized in that: The above steps S1-S5 are completed in cooperation with a planetary gearbox gear strength analysis device, which includes a fixed base (1), two gearbox bases (10) are fixedly installed on the top of the fixed base (1), and a resistance gear (13) is provided in the middle position of the two gearbox bases (10). The planetary gearbox to be strength analyzed is installed on the top of the two gearbox bases (10), and a servo motor (3) is provided at one end of the planetary gearbox installed on the top of the gearbox base (10) to drive the rotation. The outer wall of the planetary gearbox is provided with a gear ring (9), and the gear ring (9) is meshed with the resistance gear (13). One end of the resistance gear (13) is provided with a clamping plate (14) for controlling the resistance size.

3. A planetary gearbox gear strength analysis method according to claim 2, characterized in that: A fixed sleeve (7) with a circular hole structure is provided at the top of one of the gearbox bases (10); a power shaft of a planetary gearbox installed at the top of the two gearbox bases (10) passes through the circular hole of the fixed sleeve (7) and extends toward the other end of the fixed sleeve (7); a friction wheel (17) is installed on the surface of the extended power shaft.

4. A planetary gearbox gear strength analysis method according to claim 2, characterized in that: The clamping piece (14) includes two hinged hanging ears (15) arranged on the surface of the gear box base (10). There are two clamping pieces (14) in total. The top of each clamping piece (14) is hinged to the corresponding hinged hanging ear (15). The bottom of each hinged hanging ear (15) is provided with a reciprocating sliding block (19) for pulling. The two corresponding hinged hanging ears (15) are clamped and clamped together by the two reciprocating sliding blocks (19) for pulling.

5. A planetary gearbox gear strength analysis method according to claim 4, characterized in that: Each of the holding plates (14) is a semicircular bend with an arc-shaped structure, and a friction plate (23) is provided at the bottom end of each of the holding plates (14).

6. A planetary gearbox gear strength analysis method according to claim 4, characterized in that: The reciprocating sliding block (19) includes a reciprocating sliding frame (16) fixed to the top of the fixed base (1), and a linear linear slide (24) with a linear groove structure is provided on the top surface of the reciprocating sliding frame (16). The two reciprocating sliding blocks (19) are respectively slidably connected in the linear linear slide (24), and a threaded screw (25) is rotatably connected inside the linear linear slide (24). One end of the threaded screw (25) is provided with a servo motor (22) to drive the rotation. The surface of the threaded screw (25) is threadedly connected to two screw sleeves (26), and the two reciprocating sliding blocks (19) are respectively fixed to the surface of the corresponding screw sleeve (26).

7. A planetary gearbox gear strength analysis method according to claim 4, characterized in that: The bottom end of each of the clamping plates (14) is hinged with a movable rod (21), and the top end of the movable rod (21) is provided with a hinge shaft (18). The hinge shaft (18) is rotatably connected to the bottom end of the clamping plate (14). A straight slot hole (20) is provided on the surface of each of the reciprocating sliding blocks (19). The bottom end of the movable rod (21) is rotatably connected to the straight slot hole (20), and the top end of the movable rod (21) rotatably connected to the straight slot hole (20) is slidably connected to the straight slot hole (20).

8. The planetary gearbox gear strength analysis method according to claim 3, characterized in that: A driven wheel (6) is fixedly mounted on the surface of the power shaft of the planetary gearbox, a servo motor (3) is fixedly mounted on the top of the fixed base (1), an output shaft is extended outward from the servo motor (3), a driving wheel (4) is fixedly mounted on the surface of the output shaft of the servo motor (3), and a transmission chain (5) is provided between the driving wheel (4) and the driven wheel (6).

9. A planetary gearbox gear strength analysis method according to claim 8, characterized in that: Gear shafts (11) are provided at both ends of the resistance gear (13), and the surface of the gear shaft (11) is rotatably connected to a gear shaft bracket (12), and the gear shaft bracket (12) is fixed to the top end of the fixed base (1).

10. The planetary gearbox gear strength analysis method according to claim 8, characterized in that: A supporting foot (2) is fixedly mounted on the bottom end of the fixed base (1).

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