An assembly device for a planetary gear assembly

Abstract

The application discloses an assembling device for a planetary gear assembly, which comprises a supporting assembly, a connecting assembly, a positioning assembly and a flexible protective pad. The supporting assembly comprises an assembling bottom plate and two supporting seats, which are arranged in parallel on the assembling bottom plate and are located at the same height. The connecting assembly comprises two connecting seats and a limiting rod. The connecting seat comprises a connecting plate and a connecting shaft, and the connecting shaft is fixedly connected with the connecting plate. The connecting shaft can be installed into a first through hole. A second through hole for connecting with a planet carrier is arranged on the connecting plate. A limiting hole is arranged on the connecting shaft. The limiting rod is used for being inserted into the limiting hole through a limiting through hole. The positioning assembly comprises a first dummy shaft and a second dummy shaft, which can be installed into sliding bearing mounting holes in the planet carrier. The flexible protective pad is installed on the end face of a thrust bearing and is used for preventing the planet gear from being scratched during installation. The above arrangement can solve the problem that the planetary gear assembly is damaged during assembly.

Description

Technical Field

[0001] This invention relates to the field of gearbox manufacturing technology, and in particular to an assembly device for planetary gear assemblies. Background Technology

[0002] With the increasing scale of wind power, sliding bearings are being used more and more in gearboxes. In the planetary transmission structure of a gearbox with sliding bearings, there is a small radial clearance between the sliding bearing and the planetary gears, and an interference fit with the planetary carrier mounting holes. The planetary gears are generally used with thrust bearings (made of soft copper), which are located on both sides of the planetary gears and fixed on the planetary carrier. The axial clearance between the planetary gears and the thrust bearings is small (less than 2mm). If the planetary gears are installed vertically using a conventional method, and are pushed horizontally and aligned with the planetary carrier mounting holes using a clamp, it is easy to cause bumps and scratches on the surface of the thrust bearing. The common material for the sliding bearing bush is a bearing alloy (Babbitt metal). If the axial deviation between the inner bore of the planetary gears and the planetary carrier is too large, bumps and scratches are easily caused on the surface of the sliding bearing during installation.

[0003] Therefore, how to avoid damage to the planetary gear assembly during assembly is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide an assembly device for planetary gear assemblies that can avoid damage to the planetary gear assemblies during the assembly process.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An assembly apparatus for a planetary gear assembly, used to assemble a thrust bearing, planetary gears, and a sliding bearing into a planet carrier, comprising:

[0007] The support assembly includes an assembly base plate and two support seats. The two support seats are arranged parallel to each other on the assembly base plate and are located at the same height. Each support seat is provided with a circular first through hole and a limiting through hole perpendicular to the axis of the first through hole.

[0008] A connecting assembly includes two connecting seats and a limiting rod. Each connecting seat includes a connecting plate and a connecting shaft. The connecting shaft is fixedly connected to the connecting plate, and its axis is perpendicular to the connecting plate. The connecting shaft can be installed into the first through hole. The connecting plate is provided with a second through hole for connecting with the planetary carrier. A limiting hole is provided on the connecting shaft along a direction perpendicular to the axis of the connecting shaft. The limiting rod is used to pass through the limiting through hole and be inserted into the limiting hole.

[0009] The positioning assembly includes a first dummy shaft and a second dummy shaft, which can be installed into the sliding bearing mounting hole in the planetary carrier;

[0010] A flexible protective pad is installed on the end face of the thrust bearing to prevent the planetary gear from being scratched during installation.

[0011] Preferably, the support base is split into an upper end cover and a support base along the diameter of the first through hole in a direction parallel to the assembly base plate. The upper end cover is detachably connected to the support base, and the axis of the limiting through hole coincides with the diameter of the first through hole perpendicular to the assembly base plate.

[0012] Preferably, the axis of the limiting through hole and the axis of the sliding bearing mounting hole are in the same plane.

[0013] Preferably, the two connecting seats are specifically an input terminal connecting seat installed to the input end of the planetary carrier and an output terminal connecting seat installed to the output end of the planetary carrier. The connecting plate of the input terminal connecting seat is connected to the input end of the planetary carrier, and the connecting plate of the output terminal connecting seat is connected to the output end of the planetary carrier.

[0014] Preferably, the connecting shaft has a groove for mounting a bearing in the direction opposite to the connecting plate.

[0015] Preferably, the support base is connected to the mounting base plate by bolts, and the mounting base plate is provided with several threaded holes for adjusting the position of the support base.

[0016] Preferably, the first dummy shaft is installed into the sliding bearing mounting hole using a dummy shaft lifting device.

[0017] Preferably, the planetary gears are installed into the planetary gear mounting slots in the planet carrier using a special lifting tool.

[0018] Preferably, the dummy shaft lifting device includes a lifting frame, an upper slider, and a lower slider. The lifting frame is provided with a sliding groove, and the upper slider and the lower slider are installed in the sliding groove by bolts and nuts. Two first dummy shafts are connected and fixed on the lifting frame.

[0019] Preferably, a reinforcing rib is provided between the connecting shaft and the connecting plate.

[0020] Compared to the aforementioned background technology, the present invention provides an assembly device for a planetary gear assembly, used to assemble a thrust bearing, planetary gears, and a sliding bearing into a planetary carrier, comprising: a support assembly, a connecting assembly, a positioning assembly, and a flexible protective pad; the support assembly includes an assembly base plate and two support seats, the two support seats being arranged parallel to each other on the assembly base plate and at the same height, the support seats having a circular first through hole and a limiting through hole perpendicular to the axis of the first through hole; the connecting assembly includes two connecting seats and a limiting rod, the connecting seats including a connecting plate and a connecting shaft, the connecting shaft being fixedly connected to the connecting plate and its axis being perpendicular to the connecting plate, the connecting shaft being installable into the first through hole, the connecting plate having a second through hole for connecting to the planetary carrier, and a limiting hole on the connecting shaft along the axis perpendicular to the axis of the connecting shaft, the limiting rod being inserted into the limiting hole through the limiting through hole; the positioning assembly includes a first dummy shaft and a second dummy shaft, the first dummy shaft and the second dummy shaft being installable into the sliding bearing mounting hole in the planetary carrier; the flexible protective pad is installed on the end face of the thrust bearing to prevent it from being scratched when installing the planetary gears.

[0021] Specifically, the planetary carrier has several planetary gear mounting slots on its output end circumference. The planetary gears are mounted in these slots via sliding bearings, and thrust bearings are located at both ends of the planetary gears. For ease of installation, the thrust bearings with flexible protective pads are first installed into the planetary carrier. Then, the connecting seats are installed at both ends of the planetary carrier. The connecting seats are then mounted on two support seats on the mounting base plate. By rotating the planetary carrier, the planetary gear mounting slots are positioned directly above the carrier. A limiting rod is then inserted through the limiting through-hole to fix the planetary carrier. The planetary gears are then vertically aligned with their mounting slots and vertically installed. The flexible protective pads can then be removed. The first dummy shaft is then installed into the sliding bearing mounting hole for rough positioning. The planetary carrier can then be removed for heating and placed vertically along the axial direction. The first dummy shaft is removed, and a second dummy shaft with higher precision is installed into the sliding bearing mounting hole for fine positioning. After fine positioning, the second dummy shaft is removed, and the sliding bearing can be installed.

[0022] This not only prevents the thrust bearing from being scratched during planetary gear installation, but also prevents damage to the sliding bearing during installation due to misalignment between the planetary gear and the sliding bearing mounting hole. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the planetary gear assembly provided in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the assembled planetary gear assembly provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the support base provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the support base provided in an embodiment of the present invention from another angle;

[0028] Figure 5 This is a schematic diagram of the structure of the input terminal connector provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the output terminal connector provided in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the first dummy shaft provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the second dummy shaft provided in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the dummy shaft lifting device provided in an embodiment of the present invention.

[0033] in:

[0034] 100-Planetary carrier, 110-Thrust bearing, 120-Planetary gear, 121-Planetary gear mounting slot, 130-Sliding bearing, 131-Sliding bearing mounting hole;

[0035] 210 - Assembly base plate, 220 - Support base, 221 - First through hole, 222 - Upper end cover, 223 - Support base, 230 - Limiting through hole;

[0036] 310-Connecting seat, 312-Connecting plate, 313-Connecting shaft, 314-Second through hole, 315-Limiting hole, 316-Input end connecting seat, 317-Output end connecting seat, 320-Limiting rod, 330-Bearing;

[0037] 410 - First dummy shaft, 420 - Second dummy shaft;

[0038] 500- Flexible protective pad;

[0039] 600-Dummy shaft lifting tool, 610-Lifting frame, 620-Upper slider, 630-Lower slider;

[0040] 700 - Special lifting tools;

[0041] 800 - Reinforcing rib plate. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this invention.

[0045] Please see Figures 1 to 9 This embodiment provides an assembly device for planetary gear assembly, used to assemble thrust bearing 110, planetary gear 120 and sliding bearing 130 into planet carrier 100, including: support assembly, connecting assembly, positioning assembly and flexible protective pad 500.

[0046] The support assembly includes an assembly base plate 210 and two support seats 220. The two support seats 220 are arranged parallel to each other on the assembly base plate 210 and are located at the same height. Each support seat 220 has a circular first through hole 221 and a limiting through hole 230 perpendicular to the axis of the first through hole 221.

[0047] Understandably, the support assembly is used to support the planet carrier 100, facilitating the installation of the planet gear 120 assembly into the planet carrier 100; the planet carrier 100 is located between the two support seats 220, and under the action of the support seats 220, it is horizontally mounted above the assembly base plate 210 and can rotate freely to adjust the position of the planet gear mounting slot 121 on the planet carrier 100.

[0048] The connecting assembly includes two connecting seats 310 and a limiting rod 320. The connecting seat 310 includes a connecting plate 312 and a connecting shaft 313. The connecting shaft 313 is fixedly connected to the connecting plate 312, and its axis is perpendicular to the connecting plate 312. The connecting shaft 313 can be installed into the first through hole 221. The connecting plate 312 is provided with a second through hole 314 for connecting with the planetary carrier 100. A limiting hole 315 is provided on the connecting shaft 313 along the direction perpendicular to the axis of the connecting shaft 313. The limiting rod 320 is used to pass through the limiting through hole 230 and be inserted into the limiting hole 315.

[0049] Understandably, the planetary carrier 100 cannot be directly mounted on the support base 220. Therefore, the planetary carrier 100 needs to be connected to the connecting base 310 first, and then mounted on the two support bases 220 through the connecting base 310. Specifically, both ends of the planetary carrier 100 are connected to the connecting plate 312 of the connecting base 310, and then the connecting shaft 313 passes through the first through hole 221 on the support base 220. In this way, the planetary carrier 100 can be stably and horizontally mounted.

[0050] In addition, in order to ensure that the planetary gear 120 assembly is stably installed in the planet carrier 100 and that the planet carrier 100 does not rotate arbitrarily during the process, in this embodiment, the support base 220 is provided with a limiting through hole 230, and the connecting seat 310 is provided with a limiting hole 315 at the corresponding position of the limiting through hole 230 on the support base 220. By inserting the limiting rod 320 through the limiting through hole 230 into the limiting hole 315, the connecting seat 310 can be fixed and prevented from rotating, thus fixing the planet carrier 100. Since the planet carrier 100 is provided with multiple planetary gears 120, the connecting seat 310 is provided with several limiting holes 315. It should be noted that, in order to facilitate the installation of the planetary gear 120 assembly, in this embodiment, each position where the connecting seat 310 is fixed is such that the planetary gear mounting groove 121 is directly above it.

[0051] The positioning assembly includes a first dummy shaft 410 and a second dummy shaft 420, which can be installed into the sliding bearing mounting hole 131 in the planetary carrier 100.

[0052] Please see Figure 7 and Figure 8Understandably, when the sliding bearing 130 is installed into the sliding bearing mounting hole 131, it is easily scratched by the planetary gear 120. Therefore, when installing the sliding bearing 130, it is necessary to align the planetary gear 120 and the sliding bearing mounting hole 131. In order to achieve a better alignment effect, this embodiment uses a combination of coarse and fine positioning for positioning and calibration. After the thrust bearing 110 and the planetary gear 120 are installed, the planetary carrier 100 is still horizontally mounted on the support 220, and the sliding bearing is installed horizontally. Install the first dummy shaft 410 in hole 131 to roughly position the planetary gear 120 and the sliding bearing mounting hole 131. Then remove the planetary carrier 100 from the support 220 and rotate it to an axially vertical position. Hoist the planetary carrier 100 into the heating box, remove the first dummy shaft 410, and install the second dummy shaft 420, which has a guide structure and smaller assembly clearance, into each mounting hole in sequence. Perform precise resetting to ensure that the axis is aligned. Finally, evenly apply lubricating oil to the surface of the sliding bearing 130. After the planetary carrier 100 is heated, hoist it flat and install the sliding bearing 130.

[0053] A flexible protective pad 500 is installed on the end face of the thrust bearing 110 to prevent the planetary gear 120 from being scratched when it is installed.

[0054] Understandably, the thrust bearing 110 is located at both ends of the planetary gear 120, and the clearance for installing the planetary gear 120 is very small. Therefore, the thrust bearing 110 is easily scratched when installing the planetary gear 120 into the planetary gear mounting groove 121. In this embodiment, a flexible protective pad 500 is provided on the side of the thrust bearing 110 that contacts the planetary gear 120 to protect the thrust bearing 110. In addition, lubricating oil can be applied to it to reduce the frictional resistance during installation, thereby protecting the thrust bearing 110. The flexible protective pad 500 can be removed after the planetary gear 120 is installed.

[0055] Preferably, the support base 220 is split into an upper end cover 222 and a support base 223 in a direction parallel to the mounting base 210 along the diameter of the first through hole 221. The upper end cover 222 is detachably connected to the support base 223, and the axis of the limiting through hole 230 coincides with the diameter of the first through hole 221 perpendicular to the mounting base 210.

[0056] Please see Figure 3 and Figure 4Specifically, in order to facilitate the installation of the connector 310 onto the support 220, the support 220 is divided into two parts at the diameter of the first through hole 221: one part is the support base 223, and the other part is the upper end cover 222. In this way, when the connector 310 needs to be installed, the upper end cover 222 can be removed, the connecting shaft 313 of the connector 310 can be placed on the support base 223, and then the upper end cover 222 can be installed on the support base 223 and fixed with screws.

[0057] In this embodiment, the support base 220 is split along the diameter of the first through hole 221 in a direction parallel to the assembly base plate 210, that is, the cross section is parallel to the assembly base plate 210, and the limiting through hole 230 is located in the middle of the upper end cover 222, with its axis perpendicular to the assembly base plate 210.

[0058] Preferably, the axis of the limiting through hole 230 and the axis of the sliding bearing mounting hole 131 are on the same plane.

[0059] Understandably, this arrangement is intended to ensure that when the planetary carrier 100 is fixed, both the sliding bearing mounting hole 131 and the planetary gear mounting groove 121 are located directly above, facilitating the installation of the planetary gear 120 and the sliding bearing 130.

[0060] In this embodiment, the axis of the limiting through hole 230 is perpendicular to the mounting base plate 210 and the direction is vertically upward. Therefore, when the axis of the sliding bearing mounting hole 131 and the axis of the limiting through hole 230 are in the same plane, the sliding bearing mounting hole 131 is located directly above the planetary carrier 100. The planetary gear mounting groove 121 is coaxial with the sliding bearing mounting hole 131 and is also located directly above the planetary carrier 100 at this time.

[0061] Preferably, the two connectors 310 are an input connector 316 installed at the input end of the planetary carrier 100 and an output connector 317 installed at the output end of the planetary carrier 100. The connecting plate 312 of the input connector 316 is connected to the input end of the planetary carrier 100, and the connecting plate 312 of the output connector 317 is connected to the output end of the planetary carrier 100.

[0062] Understandably, the input and output terminals of the planetary carrier 100 have different dimensions. Therefore, the connecting plate 312, which is directly connected to the planetary carrier 100, will also have different dimensions to accommodate the input and output terminals of the planetary carrier 100. For details, please refer to [link to relevant documentation]. Figure 5 and Figure 6The input connector 316 is installed at the input end of the planetary carrier 100, and the output connector 317 is connected to the output end of the planetary carrier 100. The input connector 316 and the output connector 317 have the same structure, except that the size of the connecting plate 312 is different. The connecting plate 312 of the input connector 316 and the output connector 317 can be connected to the input end and the output end of the planetary carrier 100, respectively.

[0063] Preferably, the connecting shaft 313 is provided with a groove for mounting the bearing 330 in the direction opposite to the connecting plate 312.

[0064] Understandably, in order to make it easier to rotate the planetary carrier 100 to adjust the position of the planetary gear mounting slot 121, a groove for mounting the bearing 330 is provided on the connecting shaft 313. The bearing 330 can be installed, and the bearing 330 can be installed into the first through hole 221. This makes it easier and more convenient to rotate the planetary carrier 100.

[0065] Preferably, the support base 220 is connected to the mounting base plate 210 by bolts, and the mounting base plate 210 is provided with several threaded holes for adjusting the position of the support base 220.

[0066] Understandably, different planetary carriers 100 will have different lengths, and the distance between the two support seats 220 supporting the planetary carrier 100 will also be different. Therefore, in order to increase the applicability of the planetary gear assembly device, a large number of screw holes are provided on the assembly base plate 210. By changing the position of the support base 223 on the assembly base plate 210, it can accommodate planetary carriers 100 of different lengths. In this way, the versatility of the planetary gear assembly device is increased, and manufacturing costs are saved. In addition, in order to facilitate the adjustment of the position of the support seat 220, the support seat 220 is connected to the assembly base plate 210 by bolts. This connection method is simple, convenient, and relatively stable.

[0067] Preferably, the first dummy shaft 410 is installed into the sliding bearing mounting hole 131 by the dummy shaft hanger 600.

[0068] Understandably, in order to more conveniently and stably align the planetary gear 120 and the sliding bearing mounting hole 131, a dummy shaft hanger 600 is used to install the first dummy shaft 410. This improves the stability of installing the first dummy shaft 410 and reduces labor costs.

[0069] Preferably, the planetary gear 120 is installed into the planetary gear mounting slot 121 in the planet carrier 100 using a special lifting tool 700.

[0070] Understandably, the planetary gear mounting slot 121 can only accommodate the planetary gear 120. In order to avoid damaging the thrust bearings 110 installed at both ends of the planetary gear 120, the planetary gear 120 needs to be stably and accurately installed into the planetary gear mounting slot 121. Therefore, using the special lifting tool 700 is not only convenient and quick, but also saves labor costs.

[0071] Preferably, the dummy shaft lifting device 600 includes a lifting frame 610, an upper slider 620 and a lower slider 630. The lifting frame 610 is provided with a sliding groove. The upper slider 620 and the lower slider 630 are installed in the sliding groove by bolts and nuts. Two first dummy shafts 410 are connected and fixed on the lifting frame 610.

[0072] Specifically, please refer to Figure 9 The slide groove above the hoisting frame 610 is connected to the upper slider 620 and the lower slider 630 by a bolt assembly. The first dummy shaft 410 is fixed to the left and right sides of the hoisting frame 610 by bolt assemblies. By finely adjusting the position of the upper slider 620 and the lower slider 630, the first dummy shaft 410 is hoisted horizontally and its axis is installed horizontally. This setting can ensure that the first dummy shaft 410 is easy to install and remove and its center of gravity is adjustable.

[0073] Preferably, a reinforcing rib plate 800 is provided between the connecting shaft 313 and the connecting plate 312.

[0074] Understandably, in this embodiment, the connecting shaft 313 is a columnar structure and the connecting plate 312 is a plate-like structure. In order to enhance the overall strength of the connecting seat 310, a reinforcing rib 800 is provided between the connecting shaft 313 and the connecting plate 312.

[0075] In summary, this invention provides an assembly device for a planetary gear assembly, used to assemble a thrust bearing 110, a planetary gear 120, and a sliding bearing 130 into a planetary carrier 100. The device includes a support assembly, a connecting assembly, a positioning assembly, and a flexible protective pad 500. The planetary carrier 100 is connected to the connecting assembly and mounted on the support assembly via the connecting assembly. The support assembly and the connecting assembly can fix the planetary carrier 100 via a limiting rod 320, a limiting through hole 230, and a limiting hole 315, facilitating the installation of the planetary gear 120. To prevent damage to the thrust bearing 110 during planetary gear 120 installation, a flexible protective pad 500 is installed on the end face of the thrust bearing 110. To prevent damage to the sliding bearing 130, the planetary gear 120 and the sliding bearing mounting hole 131 are coarsely and finely positioned using the positioning assembly, effectively reducing the risk of scratches on the sliding bearing 130 during assembly.

[0076] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0077] The embodiments provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An assembly apparatus for a planetary gear assembly, used to assemble a thrust bearing (110), a planetary gear (120), and a sliding bearing (130) into a planet carrier (100), characterized in that, include: The support assembly includes an assembly base plate (210) and two support seats (220). The two support seats (220) are arranged in parallel on the assembly base plate (210) and at the same height. Each support seat (220) has a circular first through hole (221) and a limiting through hole (230) perpendicular to the axis of the first through hole (221). The connecting assembly includes two connecting seats (310) and a limiting rod (320). The connecting seat (310) includes a connecting plate (312) and a connecting shaft (313). The connecting shaft (313) is fixedly connected to the connecting plate (312), and its axis is perpendicular to the connecting plate (312). The connecting shaft (313) can be installed into the first through hole (221). The connecting plate (312) is provided with a second through hole (314) for connecting with the planetary carrier (100). A limiting hole (315) is provided on the connecting shaft (313) along the direction perpendicular to the axis of the connecting shaft (313). The limiting rod (320) is used to pass through the limiting through hole (230) and be inserted into the limiting hole (315). The positioning assembly includes a first dummy shaft (410) and a second dummy shaft (420), which can be installed into the sliding bearing mounting hole (131) in the planetary carrier; A flexible protective pad (500) is installed on the end face of the thrust bearing (110) to prevent the planetary gear (120) from being scratched when it is installed. The support base is split into an upper end cover (222) and a support base (223) in a direction parallel to the assembly base plate (210) along the diameter of the first through hole (221). The upper end cover (222) is detachably connected to the support base (223). The axis of the limiting through hole (230) coincides with the diameter of the first through hole (221) perpendicular to the assembly base plate (210). The two connecting seats (310) are specifically an input terminal connecting seat (316) installed to the input end of the planetary carrier and an output terminal connecting seat (317) installed to the output end of the planetary carrier. The connecting plate (312) of the input terminal connecting seat (316) is connected to the input end of the planetary carrier, and the connecting plate (312) of the output terminal connecting seat (317) is connected to the output end of the planetary carrier. The first dummy shaft (410) is installed into the sliding bearing mounting hole (131) by means of a dummy shaft hanger (600); The planetary gear (120) is installed into the planetary gear mounting slot (121) in the planet carrier using a special lifting tool (700); The dummy shaft lifting device (600) includes a lifting frame (610), an upper slider (620), and a lower slider (630). The lifting frame (610) is provided with a sliding groove. The upper slider (620) and the lower slider (630) are installed in the sliding groove by bolts and nuts. Two first dummy shafts (410) are connected and fixed on the lifting frame (610).

2. The assembly device for the planetary gear assembly according to claim 1, characterized in that, The axis of the limiting through hole (230) is in the same plane as the axis of the sliding bearing mounting hole (131).

3. The assembly apparatus for the planetary gear assembly according to claim 1, characterized in that, The connecting shaft (313) has a groove for mounting a bearing (330) in the direction away from the connecting plate (312).

4. The assembly device for the planetary gear assembly according to claim 1, characterized in that, The support base (220) is connected to the assembly base plate (210) by bolts. The assembly base plate (210) is provided with several threaded holes for adjusting the position of the support base (220).

5. The assembly apparatus for the planetary gear assembly according to claim 1, characterized in that, A reinforcing rib (800) is provided between the connecting shaft (313) and the connecting plate (312).

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