A vibration test system for planetary gear transmission mechanism

Abstract

The present invention discloses a vibration test system for a planetary gear transmission mechanism, including a test platform, a rotating platform and a vibration platform; a driving motor, a planetary gear transmission box and a load assembly are arranged on the rotating platform, and the rotating platform is driven by a first driving mechanism so that the rotating platform can rotate with the rotating shaft of the planetary gear transmission box as the rotating shaft; the rotating platform is arranged on the vibration platform, and the vibration platform vibrates relative to the test platform under the action of a second driving mechanism to create a vibrating test environment; a vibration sensor is arranged on the gear in the planetary gear transmission box to collect vibration data of the gear. In the vibration test system provided by the present invention, during the vibration process, the rotating platform carries the entire planetary gear transmission mechanism to rotate, so that during the entire test process, the vibration data of the planetary gear transmission mechanism in a vibrating state can be tested when each point of the gear ring edge in the planetary gear transmission box is at the lowest point.

Description

Technical Field

[0001] The invention relates to the technical field of gear testing, and in particular to a vibration testing system for a planetary gear transmission mechanism. Background Art

[0002] The planetary gear transmission mechanism is an important component of the reducer of new energy vehicles, and its performance plays a vital role in the performance of the entire power drive system; therefore, it is necessary to conduct effective vibration testing on the planetary gear transmission mechanism to test the stability of the entire planetary gear transmission mechanism.

[0003] The existing gear testing device is mainly used to test the gear transmission mechanism in a horizontal state; however, the planetary gear has a special structure. The planetary gear transmission mechanism mainly includes a sun gear, a ring gear, and a planetary gear arranged between the sun gear and the ring gear. The ring gear is relatively fixed, and the sun gear can drive multiple planetary gears to rotate 360° between the ring gear and the sun gear.

[0004] Since the ring gear is a ring-shaped structure, if the ring gear is installed in different positions, the specific position on the ring gear affected by gravity will be different, and the meshing state of the ring gear and the planetary gear will be different; therefore, if it is not possible to ensure that the installation position of the ring gear in actual use is the same as its installation position in the test process, it will result in that each gear transmission mechanism cannot 100% restore the actual application scenario in the test. Therefore, the test device used in the prior art cannot accurately obtain the vibration data of the planetary gear transmission mechanism under different installation positions of the ring gear. Summary of the invention

[0005] The object of the present invention is to provide a vibration testing system for a planetary gear transmission mechanism, so that the entire planetary gear transmission mechanism can rotate during the testing process, so as to solve the technical problems existing in the prior art.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A vibration test system for a planetary gear transmission mechanism, comprising a test platform and further comprising:

[0008] A first fixed seat, used for fixing the drive motor; a second fixed seat, used for fixing the planetary gear transmission box; a third fixed seat, used for fixing the load assembly; a coupling, used for connecting the rotating shafts on both sides of the planetary gear transmission box to the drive shaft of the drive motor and the connecting shaft of the load assembly respectively; a rotating platform, wherein the first fixed seat, the second fixed seat and the third fixed seat are sequentially arranged on the rotating platform, and the rotating platform can rotate with the rotating shaft of the planetary gear transmission box as the rotating shaft under the action of the first driving mechanism; a vibration platform, wherein the rotating platform is arranged on the vibration platform, and the vibration platform vibrates relative to the test platform under the action of the second driving mechanism to create a vibrating test environment; a vibration sensor, arranged on the gear in the planetary gear transmission box, and used to collect vibration data of the gear.

[0009] Furthermore, a first support plate is vertically provided at both ends of the rotating platform, and a second support plate is vertically provided at both ends of the vibration platform, the first support plate is located on the inner side of the second support plate, a through hole is opened on the second support plate, a first bearing is provided at the through hole, a rotating shaft with an interference fit with the first bearing is vertically provided on the outer side of the first support plate, and an end of the rotating shaft is located on the outer side of the second support plate; and the rotating shaft and the rotating shaft of the planetary gear transmission box are on the same straight line; the first driving mechanism includes a rotating motor, the rotating motor is arranged on the outer side of the second support plate, and the driving shaft of the rotating motor drives the rotating shaft to rotate through a bevel gear set.

[0010] Furthermore, an electric plug is provided along the axis of the rotating shaft at the first support plate close to the driving motor side, and the electric plug is electrically connected to the driving motor. The electric plug is electrically connected to an external circuit through a conductive slip ring, so that the driving motor can always maintain circuit connectivity during the rotation of the rotating platform.

[0011] Furthermore, the vibration platform is provided with a bracket, the conductive slip ring is arranged at the end of the bracket, the rotating shaft provided with the electric plug is a sleeve structure, the electric plug is fixed inside the rotating shaft, and the end of the bracket extends into the rotating shaft, so that the conductive slip ring can be rotatably connected to the electric plug.

[0012] Furthermore, the upper surface of the vibration platform is provided with a cylindrical groove with a circular arc cross-section in a horizontal plane along its own axial direction, and the center of the arc is on the same straight line as the rotating axis of the rotating platform; the rotating platform is an arc cylinder coaxial with the cylindrical groove; the second fixed seat includes two groups of bearing seats, and the bearing seats are provided with second bearings, the inner rings of the two second bearings are respectively interference fit with the rotating shafts on both sides of the planetary gear transmission box, and the outer rings of the two second bearings are respectively interference fit with the bearing seats, and the two groups of bearing seats are fixed to the housing of the planetary gear transmission box; the rotating platform is provided with an inner groove capable of accommodating the planetary gear transmission box at a position corresponding to the planetary gear transmission box, so as to avoid collision between the planetary gear transmission box and the vibration platform during the rotation of the rotating platform.

[0013] Furthermore, the bottom surface of the rotating platform is provided with a plurality of groups of rollers capable of contacting the columnar grooves, and the rotating planes of the rollers are arranged perpendicularly to the rotating axis of the rotating platform.

[0014] Furthermore, a protective cover capable of wrapping the driving motor, the planetary gear transmission box and the load assembly is provided on the rotating platform, an edge on one side of the protective cover is hinged to the rotating platform, and an edge on the other side of the protective cover is detachably connected to the rotating platform via a lock; and the protective cover forms a full circle with the rotating platform in the cross-sectional direction, a plurality of groups of rollers capable of contacting the columnar grooves are provided on the outer side of the protective cover, and a rotating plane of the rollers is arranged perpendicular to the rotating axis of the rotating platform.

[0015] Furthermore, the second driving mechanism includes three groups of hydraulic telescopic rods, which are arranged between the test platform and the vibration platform; one end of the hydraulic telescopic rod is vertically connected to the test platform, and the other end of the hydraulic telescopic rod is connected to the vibration platform through a hinge seat; wherein, the end of the hydraulic telescopic rod is ball-jointed to the hinge seat, a cavity is provided at the bottom of the vibration platform for the position of the hinge seat, the cavity can wrap the edge of the hinge seat, and at least three groups of spring telescopic rods are provided between the edge position of the hinge seat and the inner wall of the cavity, and the two ends of the spring telescopic rod are respectively ball-jointed to the hinge seat and the cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] A vibration testing system for a planetary gear transmission mechanism provided by the present invention is provided with a rotating platform and a vibration platform. During the vibration process, the rotating platform carries the entire planetary gear transmission mechanism and rotates, so that during the entire test process, the vibration data of the planetary gear transmission mechanism in a vibration state can be tested when each point on the edge of the gear ring is at the lowest point.

[0018] In the present invention, the second driving mechanism for realizing the vibration of the vibration platform includes three groups of hydraulic telescopic rods, which can perform vibration tests on the entire vibration platform in a horizontal state and at various tilt angles to obtain more comprehensive vibration data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of a vibration test system for a planetary gear transmission mechanism;

[0021] Figure 2 It is a schematic diagram of the structure between the rotating platform and the vibration platform;

[0022] Figure 3 It is a structural schematic diagram of the hinge seat;

[0023] Figure 4 It is a bottom view of the vibration platform at the hinge seat;

[0024] Figure 5 It is a structural schematic diagram of the support seat.

[0025] The numbers in the figure represent the following:

[0026] 1-test platform, 2-first fixed seat, 3-second fixed seat, 4-third fixed seat, 5-coupling, 6-rotating platform, 7-vibration platform, 8-first driving mechanism, 9-second driving mechanism;

[0027] 01-drive motor, 02-planetary gearbox, 03-load component;

[0028] 61-first support plate, 62-rotating shaft, 63-columnar groove;

[0029] 71-second support plate, 72-first bearing;

[0030] 81-rotating motor, 82-bevel gear set;

[0031] 21-electric plug, 22-conductive slip ring, 23-bracket;

[0032] 31-bearing seat, 32-inner groove, 33-roller, 34-protective cover, 35-second bearing, 36-L-shaped bracket, 37-threaded hole, 38-bolt;

[0033] 91- hydraulic telescopic rod, 92- articulated seat, 93- cavity, 94- spring telescopic rod. DETAILED DESCRIPTION

[0034] 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.

[0035] like Figure 1 As shown, the present invention provides a specific implementation of a vibration testing system for a planetary gear transmission mechanism, including a testing platform 1, a first fixed seat 2, a second fixed seat 3, a third fixed seat 4, a coupling 5, a rotating platform 6 and a vibration platform 7.

[0036] Among them, the first fixed seat 2 is used to fix the driving motor 01, the second fixed seat 3 is used to fix the planetary gear transmission box 02, and the third fixed seat 4 is used to fix the load component 03; and the driving shaft of the driving motor 01, the rotating shafts on both sides of the planetary gear transmission box 02 and the connecting axis of the load component 03 are on the same straight line.

[0037] The driving motor 01 is detachably connected to the first fixing seat 2 , the planetary gear transmission box 02 is detachably connected to the second fixing seat 3 , and the load assembly 03 is detachably connected to the third fixing seat 4 .

[0038] The driving motor 01 drives the load component 03 to rotate via the planetary gear transmission box 02 to simulate the real working environment of the planetary gear transmission box 02 and obtain reliable test data.

[0039] The coupling 5 is used to connect the rotating shafts on both sides of the planetary gear transmission box 02 to the driving shaft of the driving motor 01 and the connecting shaft of the load component 03 respectively.

[0040] The first fixed seat 2, the second fixed seat 3 and the third fixed seat 4 are sequentially arranged on the rotating platform 6. Under the action of the first driving mechanism 8, the rotating platform 6 can rotate with the rotating axis of the planetary gear transmission box 02 as the rotating axis 62; during the vibration test, the rotating platform 6 carries the entire planetary gear transmission mechanism and rotates, so that during the entire test process, the vibration data of the sun gear, the ring gear and the planetary gear arranged between the sun gear and the ring gear in a vibration state can be tested when each point on the edge of the ring gear in the planetary gear transmission box 02 is at the lowest point.

[0041] The rotating platform 6 is disposed on the vibration platform 7 . The vibration platform 7 vibrates relative to the test platform 1 under the action of the second driving mechanism 9 , so as to drive the entire rotating platform 6 to vibrate, thereby creating a vibrating test environment.

[0042] The vibration sensors are arranged on the gears in the planetary gear transmission box 02 to collect vibration data of the gears; specifically, the vibration sensors are arranged on the sun gear, the ring gear and the planetary gears respectively.

[0043] In this embodiment, an embodiment of the rotation between the rotating platform 6 and the vibrating platform 7 is provided, such as Figure 1 and Figure 2 As shown:

[0044] A first support plate 61 is vertically provided at both ends of the rotating platform 6, and a second support plate 71 is vertically provided at both ends of the vibration platform 7. The first support plate 61 is located on the inner side of the second support plate 71. A through hole is opened on the second support plate 71, and a first bearing 72 is provided at the through hole. A rotating shaft 62 with an interference fit with the first bearing 72 is vertically provided on the outer side of the first support plate 61, and the rotating shaft 62 and the rotating shaft of the planetary gear transmission box are on the same straight line.

[0045] The end of the rotating shaft 62 is located outside the second supporting plate 71 . The first driving mechanism 8 includes a rotating motor 81 . The rotating motor 81 is also arranged outside the second supporting plate 71 . The driving shaft of the rotating motor 81 drives the rotating shaft 62 to rotate through a bevel gear set 82 .

[0046] Specifically, the bevel gear set 82 includes two meshing bevel gears, and the two bevel gears are respectively arranged at the ends of the driving shaft and the rotating shaft.

[0047] This embodiment also provides the following embodiments, so that the circuit connection of the driving motor 01 can still be achieved during the rotation of the rotating platform 6, such as Figure 1 As shown:

[0048] An electric plug 21 is provided on the first support plate 61 close to the driving motor 01. The electric plug 21 is electrically connected to the driving motor 01. The electric plug 21 is electrically connected to the external circuit through a conductive slip ring 22, so that when the rotating platform 6 rotates, the driving motor 01 can always maintain circuit connectivity, and external wires will not be entangled due to the rotation of the rotating platform 6.

[0049] Furthermore, the vibration platform 7 is provided with a bracket 23, which is a ┌-shaped structure, and the conductive slip ring 22 is arranged at the end of the bracket 23, and the external circuit is electrically connected to the conductive slip ring 22 along the bracket 23; the rotating shaft 62 on this side is a sleeve structure, and the end of the electric plug 21 connected to the conductive slip ring 22 is located inside the rotating shaft 62, and the end of the bracket 23 extends into the rotating shaft 62; when the rotating platform 6 rotates, the electric plug 21 and the rotating shaft 62 rotate synchronously, the conductive slip ring 22 is in a stationary state, and the conductive slip ring 22 can be rotatably connected with the electric plug 21 to achieve circuit connectivity.

[0050] In this embodiment, the rotating platform 6 needs to be installed with a driving motor 01, a planetary gear transmission box 02 and a load assembly 03, resulting in an uneven distribution of the center of gravity on the entire rotating platform 6. During the rotation of the rotating platform 6, the entire rotating platform 6 will vibrate under the action of centrifugal force. In order to prevent the test data from being interfered with by external environmental factors, this embodiment provides the following examples, such as Figure 1 and Figure 2 As shown:

[0051] The upper surface of the vibration platform 7 is provided with a cylindrical groove 63 with a circular arc cross section in the horizontal plane along its own axial direction. The center of the circular arc is in the same straight line as the rotating shaft 62 of the rotating platform 6; the rotating platform 6 is an arc cylinder coaxial with the cylindrical groove 63.

[0052] The second fixed seat 3 includes two sets of bearing seats 31, such as Figure 5 As shown, a second bearing 35 is provided in the bearing seat 31, and the inner rings of the two second bearings 35 are respectively interference fit with the rotating shafts on both sides of the planetary gear transmission box 02, and the outer rings of the two second bearings 35 are respectively interference fit with the bearing seat 31, so that the outer rings of the second bearings 35 are fixed relative to the support seat 31, and the two sets of bearing seats 31 are fixed to the shell of the planetary gear transmission box 02.

[0053] Specifically, the bearing seat 31 and the planetary gear transmission box 02 are fixedly connected by an L-shaped bracket 36; at least one group of threaded holes 37 are provided on the top of the bearing seat 31, and at least one group of threaded holes 37 are provided on the side of the planetary gear transmission box 02 facing the bearing seat 31, and through holes are provided at both ends of the L-shaped bracket 36, through which bolts 38 pass through the through holes and are threadedly connected to the threaded holes 37, so that the two ends of the L-shaped bracket 36 are respectively fixedly connected to the bearing seat 31 and the planetary gear transmission box 02; when the driving motor 01 drives the internal gears of the planetary gear transmission box 02 to rotate, the planetary gear transmission box 02 is relatively fixed and does not rotate.

[0054] The bottom surface of the rotating platform 6 is provided with a plurality of groups of rollers 33 capable of contacting the columnar grooves 63 , and the rotating planes of the rollers 33 are arranged perpendicular to the rotating shaft 62 of the rotating platform 6 .

[0055] When the rotating platform 6 rotates at a small angle, the roller 33 can provide a supporting force to the rotating platform 6 to limit the shaking of the rotating platform 6 , while not restricting the rotation of the rotating platform 6 .

[0056] Since in this embodiment, the vibration platform 7 is not a complete cylinder, further, a protective cover 34 capable of wrapping the drive motor 01, the planetary gear transmission box 02 and the load assembly 03 is provided on the rotating platform 6, and the edge of one side of the protective cover 34 is hinged to the rotating platform 6, and the edge of the other side of the protective cover 34 is detachably connected to the rotating platform 6 through a lock.

[0057] The protective cover 34 forms a full circle with the rotating platform 6 in the cross-sectional direction, so that the protective cover 34 and the rotating platform 6 form a complete cylinder. The outer side of the protective cover 34 is provided with multiple groups of rollers 33 that can contact the columnar grooves 63, and the rotating plane of the rollers 33 is arranged perpendicular to the rotating shaft 62 of the rotating platform 6.

[0058] When the rotating platform 6 rotates at a large angle, the roller 33 can provide a clamping force to the rotating platform 6 to limit the shaking of the rotating platform 6 , while not restricting the rotation of the rotating platform 6 .

[0059] Alternatively, on the basis of the above structure, the roller 33 can be set on the inner wall of the columnar groove 63, and the rotation plane of the roller 33 is set perpendicular to the rotation axis 62 of the rotating platform 6. The roller 33 can provide a clamping force to the rotating platform 6 to limit the shaking of the rotating platform 6, and at the same time will not limit the rotation of the rotating platform 6.

[0060] At the same time, the protective cover 34 of this structure can protect the drive motor 01, the planetary gear transmission box 02 and the load component 03 to prevent external factors from interfering with the test.

[0061] Furthermore, an inner groove 32 capable of accommodating the planetary gear transmission box 02 is provided on the rotating platform 6 at a position corresponding to the planetary gear transmission box 02, so as to be suitable for planetary gear transmission boxes 02 of different specifications and sizes, so as to avoid collision between the large-sized planetary gear transmission box 02 and the vibration platform 7 during the rotation of the rotating platform 6.

[0062] In the prior art, the vibration direction of the general vibration test is to vibrate in the vertical direction, and the vibration test environment is relatively simple. In this embodiment, in order to enrich the vibration test environment and to be closer to the actual application environment, the following embodiments are provided. Figure 3 and Figure 4 As shown:

[0063] In this embodiment, the second driving mechanism 9 includes three groups of hydraulic telescopic rods 91, which are arranged between the test platform 1 and the vibration platform 7; one end of the hydraulic telescopic rod 91 is vertically connected to the test platform 1, and the other end of the hydraulic telescopic rod 91 is connected to the vibration platform 7 through a hinge seat 92.

[0064] Among them, the end of the hydraulic telescopic rod 91 is connected to the articulated seat 92 by a ball joint, and a cavity 93 is provided at the bottom of the vibration platform 7 for the position of the articulated seat 92. The cavity 93 can wrap the edge of the articulated seat 92, and at least three groups of spring telescopic rods 94 are provided between the edge position of the articulated seat 92 and the inner wall of the cavity 93. The two ends of the spring telescopic rod 94 are respectively connected to the articulated seat 92 and the cavity 93 by a ball joint.

[0065] The above structure enables the articulated seat 92 to move in the cavity 93 to avoid interference between the end of the hydraulic telescopic rod 91 and the vibration platform 7 when the hydraulic telescopic rod 91 is extended or retracted.

[0066] Furthermore, the vibration platform 7 and the test platform 1 are disc-shaped structures, and the three groups of spring telescopic rods 94 are distributed at equal intervals around the circumference.

[0067] During the test, among the three groups of hydraulic telescopic rods 91, two groups are fixed, and the other group of hydraulic telescopic rods 91 is telescopic, so as to adjust the inclination of the plane where the vibration platform 7 is located; after adjusting the inclination of the vibration platform 7, the three groups of hydraulic telescopic rods 91 are telescopic in turn, which can simulate the vibration of the vibration platform 7 in various directions within the plane to obtain more comprehensive vibration data.

[0068] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A vibration test system for a planetary gear transmission mechanism, comprising a test platform (1), characterized in that: Also includes: A first fixing seat (2) for fixing the driving motor (01); A second fixing seat (3) for fixing the planetary gear transmission box (02); A third fixing seat (4), used for fixing the load component (03); A coupling (5) for connecting the rotating shafts on both sides of the planetary gear transmission box (02) to the driving shaft of the driving motor (01) and the connecting shaft of the load component (03) respectively; A rotating platform (6), wherein the first fixed seat (2), the second fixed seat (3) and the third fixed seat (4) are arranged in sequence on the rotating platform (6), and under the action of the first driving mechanism (8), the rotating platform (6) can rotate with the rotating axis of the planetary gear transmission box (02) as the rotating axis (62); A vibration platform (7), the rotating platform (6) being arranged on the vibration platform (7), and the vibration platform (7) vibrating relative to the test platform (1) under the action of the second driving mechanism (9) to create a vibration test environment; A vibration sensor, arranged on a gear in the planetary gear transmission box (02), and used for collecting vibration data of the gear; First support plates (61) are vertically provided at both ends of the rotating platform (6), and second support plates (71) are vertically provided at both ends of the vibrating platform (7), the first support plate (61) is located on the inner side of the second support plate (71), a through hole is provided on the second support plate (71), a first bearing (72) is provided at the through hole, a rotating shaft (62) which is interference-fitted with the first bearing (72) is vertically provided on the outer side of the first support plate (61), and an end of the rotating shaft (62) is located on the outer side of the second support plate (71); The rotating shaft (62) and the rotating shaft of the planetary gear transmission box are on the same straight line; The first driving mechanism (8) comprises a rotating motor (81), the rotating motor (81) being arranged outside the second supporting plate (71), and the driving shaft of the rotating motor (81) drives the rotating shaft (62) to rotate via a bevel gear set (82); The upper surface of the vibration platform (7) is provided with a columnar groove (63) with a circular arc cross section at a horizontal plane along its own axial direction, and the center of the circular arc is on the same straight line as the rotation axis (62) of the rotating platform (6); the rotating platform (6) is an arc cylinder coaxial with the columnar groove (63); The second fixed seat (3) comprises two groups of bearing seats (31), the bearing seats (31) are provided with second bearings (35), the inner rings of the two second bearings (35) are respectively interference fit with the rotating shafts on both sides of the planetary gear transmission box (02), the outer rings of the two second bearings (35) are respectively interference fit with the bearing seats (31), and the two groups of bearing seats (31) are fixed to the housing of the planetary gear transmission box (02); An inner groove (32) capable of accommodating the planetary gear transmission box (02) is provided at a position of the rotating platform (6) corresponding to the planetary gear transmission box (02), so as to avoid collision between the planetary gear transmission box (02) and the vibration platform (7) during the rotation of the rotating platform (6).

2. The vibration test system of the planetary gear transmission mechanism according to claim 1, characterized in that: An electric plug (21) is provided at the first support plate (61) near one side of the drive motor (01), the electric plug (21) being electrically connected to the drive motor (01), and the electric plug (21) being electrically connected to an external circuit via a conductive slip ring (22), so that the drive motor (01) can always maintain circuit connectivity during the rotation of the rotating platform (6).

3. The vibration test system of the planetary gear transmission mechanism according to claim 2, characterized in that: The vibration platform (7) is provided with a bracket (23), the conductive slip ring (22) is arranged at the end of the bracket (23), the rotating shaft (62) is a sleeve structure, the end of the electric plug (21) connected to the conductive slip ring (22) is located inside the rotating shaft (62), and the end of the bracket (23) extends into the rotating shaft (62), so that the conductive slip ring (22) can be rotatably connected to the electric plug (21).

4. The vibration test system of the planetary gear transmission mechanism according to claim 3, characterized in that: The bottom surface of the rotating platform (6) is provided with a plurality of groups of rollers (33) capable of contacting the columnar grooves (63), and the rotating planes of the rollers (33) are arranged perpendicular to the rotating shaft (62) of the rotating platform (6).

5. The vibration testing system for a planetary gear transmission mechanism according to claim 4, characterized in that: The rotating platform (6) is provided with a protective cover (34) capable of enveloping the drive motor (01), the planetary gear transmission box (02) and the load assembly (03); an edge of one side of the protective cover (34) is hinged to the rotating platform (6), and an edge of the other side of the protective cover (34) is detachably connected to the rotating platform (6) via a lock; The protective cover (34) forms a full circle with the rotating platform (6) in the cross-sectional direction, and a plurality of groups of rollers (33) capable of contacting the columnar grooves (63) are provided on the outer side of the protective cover (34), and the rotating plane of the rollers (33) is arranged perpendicular to the rotating shaft (62) of the rotating platform (6).

6. The vibration testing system for a planetary gear transmission mechanism according to claim 5, characterized in that: The second driving mechanism (9) comprises three groups of hydraulic telescopic rods (91), wherein the hydraulic telescopic rods (91) are arranged between the test platform (1) and the vibration platform (7); One end of the hydraulic telescopic rod (91) is vertically connected to the test platform (1), and the other end of the hydraulic telescopic rod (91) is connected to the vibration platform (7) via a hinge seat (92); The end of the hydraulic telescopic rod (91) is ball-jointed to the hinge seat (92); a cavity (93) is provided at the bottom of the vibration platform (7) at the position of the hinge seat (92); the cavity (93) can wrap the edge of the hinge seat (92), and the hinge seat (92) can move inside the cavity (93); at least three groups of spring telescopic rods (94) are provided between the edge of the hinge seat (92) and the inner wall of the cavity (93); the two ends of the spring telescopic rods (94) are respectively ball-jointed to the hinge seat (92) and the cavity (93).

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