Planetary transmission mechanism and wind power gear box

Abstract

The invention belongs to the technical field of wind power equipment, and discloses a planetary transmission mechanism and a wind power gear box. The planetary transmission mechanism comprises a planet carrier, a planet wheel and a thrust sliding bearing, the planet carrier is provided with a mounting cavity, a mounting boss is arranged on the inner wall of the mounting cavity, and the planet wheel is arranged in the mounting cavity; the thrust sliding bearing comprises a bearing body and a connecting boss, the bearing body is arranged on the end face, facing the planet wheel, of the mounting boss, the end face, facing the planet wheel, of the bearing body is a working face, and a lubricating oil film is formed between the working face and the planet wheel; the connecting boss is connected to the side, away from the planet wheel, of the bearing body and used for being fixedly connected with the mounting boss. The mounting component is additionally arranged to reduce the hole structure of the working surface of the thrust sliding bearing of the planet wheel, so that a continuous lubricating oil film is more easily formed on the working surface of the thrust sliding bearing, and the bearing capacity of the thrust sliding bearing is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power equipment, and in particular to a planetary transmission mechanism and a wind power gearbox. Background Art

[0002] In the field of wind power equipment, the wind power gearbox plays an important role in transmitting the slow variable wind speed to the generator for power generation.

[0003] In wind power gearboxes, the structure of planetary gear sliding bearings is increasingly used. At present, due to space structure limitations and the problem of the rotary operation of the planet carrier, the installation and fixing structure of the thrust sliding bearing that bears the axial load of the planetary gear basically uses multiple screws arranged circumferentially on the working surface of the thrust sliding bearing and applies a pre-tightening force for fixation. However, machining multiple screw holes on the working surface will reduce the effective area of the working surface and is not conducive to the continuity of the oil film. In addition, since the material hardness of the thrust sliding bearing is relatively low and it is sensitive to temperature changes, it has a great influence on the screw pre-tightening. Over time, it is easy to cause screw pre-tightening failure and bearing damage.

[0004] Therefore, there is an urgent need for a planetary transmission mechanism and a wind power gearbox to solve the above technical problems. Summary of the Invention

[0005] An object of the present invention is to provide a planetary transmission mechanism that can separately set up installation components to reduce the hole structure on the working surface of the thrust sliding bearing of the planetary gear, making it easier for the working surface of the thrust sliding bearing to form a continuous lubricating oil film and ensuring the bearing capacity of the thrust sliding bearing.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A planetary transmission mechanism, comprising:

[0008] A planet carrier having an installation cavity, and installation bosses are provided on the inner wall of the installation cavity;

[0009] A planetary gear disposed in the installation cavity;

[0010] A thrust sliding bearing, including a bearing body and a connecting boss. The bearing body is disposed on the end face of the installation boss facing the planetary gear. The end face of the bearing body facing the planetary gear is the working surface, and the working surface is used to form a lubricating oil film with the planetary gear. The connecting boss is connected to the side of the bearing body away from the planetary gear, and the connecting boss is used to be fixedly connected to the installation boss.

[0011] Optionally, the connecting boss is connected to the inner peripheral surface of the bearing body, and the connecting boss is used to be fixedly connected to the inner peripheral surface of the installation boss;

[0012] Alternatively, the connecting boss is connected to the outer peripheral surface of the bearing body, and the connecting boss is used for fixedly connecting with the outer peripheral surface of the mounting boss.

[0013] Optionally, the connecting boss is a continuous annular boss structure;

[0014] Alternatively, the connecting boss includes a plurality of protruding structures, and the plurality of protruding structures are arranged at intervals along the circumferential direction of the bearing body.

[0015] Optionally, the thrust sliding bearing is an integral structure; or, the thrust sliding bearing is a split structure, and the bearing body includes at least two connected bearing half rings.

[0016] Optionally, it further includes a plurality of fasteners. One of the connecting boss and the mounting boss is provided with a plurality of connecting holes at intervals along its own circumferential direction, and the other is provided with a plurality of threaded holes at intervals along its own circumferential direction. The plurality of connecting holes and the plurality of threaded holes are arranged in one-to-one correspondence, and the plurality of fasteners are respectively inserted through the plurality of connecting holes and threadedly connected with the corresponding threaded holes.

[0017] Optionally, it further includes a plurality of stop pins. The connecting boss is recessed with a plurality of connecting grooves located on the inner side surface of the connecting boss at intervals along its own circumferential direction. The stop pins are fixedly connected to the mounting boss, and the plurality of stop pins are respectively slidably connected to the plurality of connecting grooves.

[0018] Optionally, the connecting groove includes an oval slot and a radial slot. The oval slot extends along the circumferential direction of the connecting boss, one end of the radial slot communicates with the oval slot, and the other end communicates with the end surface of the connecting boss away from the bearing body.

[0019] Optionally, it further includes a pin shaft. The pin shaft is arranged on the planet carrier, the planet gear is sleeved on the outer periphery of the pin shaft, the thrust sliding bearing is arranged on the mounting boss of the planet carrier, and the working surface of the thrust sliding bearing faces the end surface of the planet gear.

[0020] Optionally, there are two thrust sliding bearings, and the two thrust sliding bearings are respectively arranged between the two end surfaces of the planet gear along its own axial direction and the planet carrier.

[0021] Another object of the present invention is to provide a wind power gearbox, which can additionally set mounting components to reduce the hole structure on the working surface of the thrust sliding bearing of the planet gear, so that the working surface of the thrust sliding bearing is more likely to form a continuous lubricating oil film, ensuring the bearing capacity of the thrust sliding bearing.

[0022] To achieve this purpose, the present invention adopts the following technical solutions:

[0023] The wind power gearbox includes a box body and the above-mentioned planetary transmission mechanism, and the above-mentioned planetary transmission mechanism is arranged in the above-mentioned box body.

[0024] Advantages of the present invention:

[0025] The present invention provides a planetary transmission mechanism and a wind power gearbox. By additionally providing a connecting boss to fixedly connect with the mounting boss of the planet carrier, it avoids setting the connecting structure of the thrust sliding bearing on the working surface of the thrust sliding bearing structure, increases the effective area for forming an oil film on the working surface, thereby making it easier for the working surface of the thrust sliding bearing of the planet gear to form a continuous lubricating oil film, ensuring the axial bearing capacity of the thrust sliding bearing for the planet gear, and also avoiding damage to the bearing body caused by fixing it to an external structure, improving the service life of the thrust sliding bearing. At the same time, changing the connecting structure of the planet carrier from the main stress area to the mounting boss makes there be no fixed connection on the main stress area of the planet carrier, ensuring the structural strength of the planet carrier. Description of the Drawings

[0026] Figure 1 is the cross-section of the planetary transmission mechanism provided by the specific embodiment of the present invention Figure 1 ;

[0027] Figure 2 is the cross-section of the planetary transmission mechanism provided by the specific embodiment of the present invention Figure 2 ;

[0028] Figure 3 is the cross-section of the planetary transmission mechanism provided by the specific embodiment of the present invention Figure 3 ;

[0029] Figure 4 is the cross-section of the planetary transmission mechanism provided by the specific embodiment of the present invention Figure 4 ;

[0030] Figure 5 is the cross-section of the planetary transmission mechanism provided by the specific embodiment of the present invention Figure 5 ;

[0031] Figure 6 is the axonometric view of the thrust sliding bearing provided by the specific embodiment of the present invention Figure 1 ;

[0032] Figure 7 is the axonometric view of the thrust sliding bearing provided by the specific embodiment of the present invention Figure 2 ;

[0033] Figure 8 is the axonometric view of the thrust sliding bearing provided by the specific embodiment of the present invention Figure 3 ;

[0034] Figure 9 isFigure 1 Partial enlarged view at position A in [the figure];

[0035] Figure 10 is Figure 2 Partial enlarged view at position B in [the figure];

[0036] Figure 11 is Figure 3 Partial enlarged view at position C in [the figure].

[0037] In the figure:

[0038] 1. Thrust sliding bearing; 2. Planet carrier; 201. Mounting boss; 3. Planet gear; 4. Pin shaft; 5. Radial sliding bearing; 6. Threaded hole; 7. Connecting hole; 8. Fastener; 9. Stop pin;

[0039] 110. Bearing body; 111. Working surface;

[0040] 120. Connecting boss; 121. Connecting groove; 1211. Waist-shaped groove; 1212. Radial groove. Detailed implementation manners

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention rather than all structures are shown in the drawings.

[0042] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0044] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings. These are only for convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0045] The following refers to Figures 1 to 11 to introduce the planetary transmission mechanism and the wind power gearbox provided by the present invention.

[0046] Please refer to Figures 1 to 8 , this embodiment provides a planetary transmission mechanism. The planetary transmission mechanism includes a planet carrier 2, planet gears 3, and a thrust sliding bearing 1. The planet carrier 2 has an installation cavity, and an installation boss 201 is provided on the inner wall of the installation cavity. The planet gears 3 are arranged in the installation cavity, and the thrust sliding bearing 1 is arranged between the planet carrier 2 and the planet gears 3 to achieve axial load bearing of the planet gears 3. Among them, the thrust sliding bearing 1 includes a bearing body 110 and a connecting boss 120. The bearing body 110 is arranged on the end face of the installation boss 201 facing the planet gears 3. The end face of the bearing body 110 facing the planet gears 3 is a working face 111, and the working face 111 is used to form a lubricating oil film with the planet gears 3; the connecting boss 120 is connected to the side of the bearing body 110 away from the planet gears 3, and the connecting boss 120 is used for fixed connection with the installation boss 201.

[0047] In the planetary transmission mechanism of this embodiment, by additionally providing a connecting boss 120 outside the bearing body 110 of the thrust sliding bearing 1 for fixed connection with the installation boss 201 of the planet carrier 2, it is avoided that the connecting structure of the thrust sliding bearing 1 is arranged on the working face 111 of the thrust sliding bearing 1, improving the effective area of the working face 111 for forming the oil film. Thus, it is easier for the working face 111 of the thrust sliding bearing 1 to form a continuous lubricating oil film, ensuring the axial bearing capacity of the thrust sliding bearing 1 for the planet gears 3, and also avoiding damage to the bearing body 110 caused by fixing with external structures, improving the service life of the thrust sliding bearing 1 and even the planetary transmission mechanism. At the same time, changing the connecting structure of the planet carrier 2 from the main stress area to the installation boss 201 makes there be no fixed connection on the main stress area of the planet carrier 2, ensuring the structural strength of the planet carrier 2.

[0048] Specifically, two thrust sliding bearings 1 are provided. The two thrust sliding bearings 1 are respectively arranged between the two end faces of the planet gears 3 along their own axes and the planet carrier 2, for axial load bearing on both end faces of the planet gears 3 in the axial direction to improve the axial bearing capacity of the planet gears 3.

[0049] Please refer to Figure 6 ,Figure 7 , Figure 9 and Figure 10 , optionally, the connecting boss 120 is arranged on the outer circumference or the inner circumference of the bearing body 110, and both can achieve the fixed connection of the mounting boss 201 of the planet carrier 2. Specifically, in an optional embodiment, the connecting boss 120 is connected to the inner circumferential surface of the bearing body 110, and the connecting boss 120 is used for fixedly connecting with the inner circumferential surface of the mounting boss 201; in another optional embodiment, the connecting boss 120 is connected to the outer circumferential surface of the bearing body 110, and the connecting boss 120 is used for fixedly connecting with the outer circumferential surface of the mounting boss 201. Whether the connecting boss 120 is arranged on the outer circumference or the inner circumference of the bearing body 110, it does not affect the working surface 111 of the bearing body 110, that is, the formation of a continuous oil film on the working surface 111 can be achieved.

[0050] Since there are generally multiple installation positions spaced between the connecting boss 120 and the mounting boss 201. Therefore, optionally, the connecting boss 120 can be a ring structure, or can be provided with multiple fixing structures at intervals, and both can achieve the installation of the connecting boss 120 and the mounting boss 201.

[0051] In an optional embodiment, the connecting boss 120 is a continuous annular boss structure; such a setting increases the contact area between the thrust sliding bearing 1 and the planet carrier 2, and thus can also improve the installation stability of the thrust sliding bearing 1.

[0052] Please refer to Figure 4 and Figure 5 , optionally, when the connecting boss 120 is a continuous annular structure, the connecting boss 120 can be a circular ring structure, a special-shaped ring structure or a polygonal ring structure, all of which are within the protection scope of the present invention and are not specifically limited herein.

[0053] In another optional embodiment, the connecting boss 120 includes a plurality of protruding structures, and the plurality of protruding structures are arranged at intervals along the circumferential direction of the bearing body 110, and it can also achieve the connection with the mounting boss 201, and simplifies the structure and reduces the weight of the thrust sliding bearing 1.

[0054] Optionally, the protruding structure can be an arc structure, a polygonal structure, a special-shaped structure, all of which are within the protection scope of the present invention and are not specifically limited herein.

[0055] Similarly, the mounting boss 201 can be a continuous ring structure, or can be provided with multiple fixing structures at intervals, and both can achieve the installation of the connecting boss 120 and the mounting boss 201.

[0056] In an alternative embodiment, there is one mounting boss 201, and the mounting boss 201 is of an annular structure; with such a setting, the contact area between the thrust sliding bearing 1 and the planet carrier 2 is increased, thereby also improving the mounting stability of the thrust sliding bearing 1.

[0057] In another alternative embodiment, the mounting boss 201 includes a plurality of protruding portions corresponding to the connecting boss 120, and the plurality of protruding portions are arranged at intervals along the circumferential direction of the planet carrier 2. It can also achieve the connection with the connecting boss 120, and simplifies the structure and reduces the weight of the thrust sliding bearing 1.

[0058] It should be noted that the shape of the annular structure of the mounting boss 201 and the shape of the protruding portion can refer to the shape of the annular structure and the protruding structure of the connecting boss 120, which will not be elaborated here.

[0059] Optionally, the thrust sliding bearing 1 is of an integral structure; or the thrust sliding bearing 1 is of a split structure, and the bearing body 110 includes at least two connected bearing half rings. That is, the thrust sliding bearing 1 can be a ring-shaped structure or assembled by at least two half-ring structures, and both of these structures can be matched with the corresponding connecting boss 120 to ensure the applicable range of the thrust sliding bearing 1.

[0060] Exemplarily, the thrust sliding bearing 1 is of a split structure, so that in the process of use, if the thrust sliding bearing 1 needs to be replaced or disassembled, it is not necessary to first disassemble the planet gear 3, which simplifies the time and difficulty of disassembly and maintenance.

[0061] Specifically, for the fixed connection method between the connecting boss 120 and the mounting boss 201, methods such as bolt fixation and slip ring fixation can be adopted, and no specific limitation is made here.

[0062] Please refer to Figure 6 、 Figure 7 、 Figure 9 and Figure 10 , in an alternative embodiment, the planetary transmission mechanism further includes a plurality of fasteners 8. One of the connecting boss 120 and the mounting boss 201 is provided with a plurality of connecting holes 7 at intervals along its own circumference, and the other is provided with a plurality of threaded holes 6 at intervals along its own circumference. The plurality of connecting holes 7 and the plurality of threaded holes 6 are arranged in one-to-one correspondence, and the plurality of fasteners 8 are respectively inserted through the plurality of connecting holes 7 and threadedly connected to the corresponding threaded holes 6. Thus, the fixed connection between the connecting boss 120 and the mounting boss 201 can be achieved.

[0063] Exemplarily, in this embodiment, as Figure 6 and Figure 9As shown, when the connecting boss 120 is arranged on the inner peripheral surface of the bearing body 110, the connecting boss 120 is connected to the inner peripheral surface of the mounting boss 201. At this time, a threaded hole 6 is provided in the connecting boss 120, and a connecting hole 7 is provided in the mounting boss 201, so that the fastener 8 can be installed from the outside, facilitating the installation operation of the operator. As Figure 7 and Figure 10 shown, when the connecting boss 120 is arranged on the outer peripheral surface of the bearing body 110, the connecting boss 120 is connected to the outer peripheral surface of the mounting boss 201. At this time, a connecting hole 7 is provided in the connecting boss 120, and a threaded hole 6 is provided in the mounting boss 201, so that the fastener 8 can be installed from the outside, facilitating the installation operation of the operator.

[0064] It should be noted that the number of the fastener 8, the connecting hole 7 and the threaded hole 6 can be adaptively designed according to the size and working conditions of the thrust sliding bearing 1, and no specific limitation is made here.

[0065] Optionally, the fastener 8 can be selected from structures with external threads such as bolts, studs, screws, etc., and all can realize the threaded connection with the threaded hole 6.

[0066] As Figure 8 and Figure 11 shown, in another alternative embodiment, the planetary transmission mechanism further includes a plurality of stop pins 9. The connecting boss 120 is recessed with a plurality of connecting grooves 121 on its inner side surface at intervals along its circumferential direction. The stop pins 9 are fixedly connected to the mounting boss 201. Specifically, a pin hole is provided in the mounting boss 201, and the stop pins 9 are fixedly connected in the pin hole. A plurality of stop pins 9 are slidably connected to a plurality of connecting grooves 121 in a one-to-one correspondence. After each stop pin 9 is slidably engaged with the corresponding connecting groove 121, the connecting boss 120 and the mounting boss 201 can be limitedly connected, and there is also a limiting effect of the planet carrier 2 and the planet gear 3 in the axial direction, so that the fixing of the thrust sliding bearing 1 can also be realized, and it can also swing slightly in the circumferential direction, and the part errors in the machining and manufacturing process can be compensated during use.

[0067] Specifically, the connecting groove 121 includes a kidney-shaped groove 1211 and a radial groove 1212. The kidney-shaped groove 1211 extends along the circumferential direction of the connecting boss 120. One end of the radial groove 1212 communicates with the kidney-shaped groove 1211, and the other end communicates with the end surface of the connecting boss 120 away from the bearing body 110. That is, during installation, each radial groove 1212 is correspondingly arranged and slidably connected with each stop pin 9 fixedly connected in the pin hole provided in the mounting boss 201 until the stop pin 9 is slidably engaged with the kidney-shaped groove 1211, and the installation of the connecting boss 120 can be realized.

[0068] Further, the planetary transmission mechanism further includes a pin shaft 4. The pin shaft 4 is disposed on the planet carrier 2. The planet gear 3 is sleeved on the outer periphery of the pin shaft 4. The thrust sliding bearing 1 is disposed on the mounting boss 201 of the planet carrier 2, and the working surface 111 of the thrust sliding bearing 1 faces the end surface of the planet gear 3, so that the installation of the planet gear 3 can be realized.

[0069] Further, the wind power gearbox is further provided with a radial sliding bearing 5. The radial sliding bearing 5 is disposed on the outer periphery of the pin shaft 4 and forms a lubricating oil film with the inner peripheral surface of the planet gear 3 for radially bearing the planet gear 3.

[0070] Further, the wind power gearbox is further provided with a lubricating oil path. The lubricating oil path is communicated between the working surface 111 of the thrust sliding bearing 1 and the planet gear 3, and further, the lubricating oil path is also communicated between the radial sliding bearing 5 and the inner peripheral surface of the planet gear 3 for supplying lubricating oil to the two bearings to realize the formation of the lubricating oil film.

[0071] Please refer to Figures 1 to 3 , this embodiment also provides a wind power gearbox, which includes a box body and the planetary transmission mechanism described in any of the above solutions. The planetary transmission mechanism is disposed on the box body. By using this planetary transmission mechanism, the effective working area of the working surface 111 of the thrust sliding bearing 1 is increased, the continuity of the lubricating oil film is improved, and the axial bearing capacity of the thrust sliding bearing 1 on the planet gear 3 is ensured.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Planetary transmission mechanism, characterized in that, Comprising: A planet carrier (2) having an installation cavity, and an installation boss (201) is provided on the inner wall of the installation cavity; Planet gears (3) disposed in the installation cavity; A thrust sliding bearing (1) comprising a bearing body (110) and a connecting boss (120), the bearing body (110) is disposed on the end face of the installation boss (201) facing the planet gear (3), the end face of the bearing body (110) facing the planet gear (3) is a working surface (111), the working surface (111) is used to form a lubricating oil film with the planet gear (3), the connecting boss (120) is connected to the side of the bearing body (110) away from the planet gear (3), and the connecting boss (120) is used for fixed connection with the installation boss (201).

2. The planetary transmission mechanism according to claim 1, characterized in that, The connecting boss (120) is connected to the inner peripheral surface of the bearing body (110), and the connecting boss (120) is used for fixed connection with the inner peripheral surface of the installation boss (201); Or, the connecting boss (120) is connected to the outer peripheral surface of the bearing body (110), and the connecting boss (120) is used for fixed connection with the outer peripheral surface of the installation boss (201).

3. The planetary transmission mechanism according to claim 1, characterized in that, The connecting boss (120) is a continuous annular boss structure; Or, the connecting boss (120) comprises a plurality of protruding structures, and the plurality of protruding structures are arranged at intervals along the circumferential direction of the bearing body (110).

4. The planetary transmission mechanism according to claim 1, characterized in that, The thrust sliding bearing (1) is of an integral structure; or, the thrust sliding bearing (1) is of a split structure, and the bearing body (110) comprises at least two connected bearing half-rings.

5. The planetary transmission mechanism according to any one of claims 1-4, characterized in that, It further comprises a plurality of fasteners (8), one of the connecting boss (120) and the installation boss (201) is provided with a plurality of connecting holes (7) at intervals along its own circumferential direction, the other is provided with a plurality of threaded holes (6) at intervals along its own circumferential direction, the plurality of connecting holes (7) and the plurality of threaded holes (6) are arranged in one-to-one correspondence, and the plurality of fasteners (8) are respectively passed through the plurality of connecting holes (7) and threadedly connected to the corresponding threaded holes (6).

6. The planetary transmission mechanism according to any one of claims 1-4, characterized in that It further comprises a plurality of stop pins (9), the connecting boss (120) is recessed with a plurality of connecting grooves (121) located on the inner side surface of the connecting boss (120) at intervals along its own circumferential direction, the stop pins (9) are fixedly connected to the installation boss (201), and the plurality of stop pins (9) are respectively slidably connected to the plurality of connecting grooves (121).

7. The planetary transmission mechanism according to claim 6, characterized in that, The connecting groove (121) comprises an oval slot (1211) and a radial slot (1212), the oval slot (1211) extends along the circumferential direction of the connecting boss (120), and one end of the radial slot (1212) communicates with the oval slot (1211), and the other end communicates with the end face of the connecting boss (120) away from the bearing body (110).

8. The planetary transmission mechanism according to claim 1, characterized in that, It further includes a pin shaft (4). The pin shaft (4) is arranged on the planet carrier (2). The planet gear (3) is sleeved on the outer periphery of the pin shaft (4). The thrust sliding bearing (1) is arranged on the mounting boss (201) of the planet carrier (2), and the working surface (111) of the thrust sliding bearing (1) faces the end face of the planet gear (3).

9. The planetary transmission mechanism according to claim 1, characterized in that, There are two thrust sliding bearings (1), and the two thrust sliding bearings (1) are respectively arranged between the two end faces of the planet gear (3) along its own axial direction and the planet carrier (2).

10. Wind power gearbox, characterized in that, It includes a box body and the planetary transmission mechanism according to any one of claims 1-9. The planetary transmission mechanism is arranged in the box body.

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