Planetary pin shaft assembling and positioning structure of wind power gear box

Abstract

The utility model discloses an assembling and positioning structure for a planetary pin shaft of a wind power gear box. The wind power gear box planet pin shaft assembling and positioning structure comprises a planet carrier, a planet pin shaft, a positioning pin and a lubricating assembly, the planet pin shaft is arranged on the planet carrier, the planet pin shaft and the planet carrier are positioned through the positioning pin, the lubricating assembly is arranged on the planet carrier and the planet pin shaft, and the lubricating assembly comprises a first lubricating oil channel, an oil guide groove and a second lubricating oil channel. The oil guide groove is formed in the circumferential direction of the planet pin shaft, the first lubricating oil channel is formed in the planet carrier, and the second lubricating oil channel is formed in the planet pin shaft and communicates with the oil guide groove. The planet carrier is simple to process and convenient to mount, so that the quantity of lubricating oil at lubricating points in each planet pin shaft on the planet carrier is ensured to be consistent, the lubricating effect is effectively improved, and the service life of the wind power gear box is effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power gear boxes, and in particular relates to a planetary pin shaft assembly and positioning structure for a wind power gear box. Background Art

[0002] The wind turbine gearbox is an important mechanical component in a wind turbine generator set. Its main function is to transmit the power generated by the wind wheel under the action of wind to the generator and make it obtain the corresponding speed.

[0003] In the prior art, the planetary pin assembly structure of the wind turbine gearbox is as shown in the attached Figure 1 As shown, the planetary pin 20 and the planetary carrier 10 transmit the load through the interference fit connection, and the lubricating oil on the planetary carrier 10 is introduced into the lubricating oil hole 30 on the planetary pin 20 through the annular oil groove 40 on the planetary pin 20, so as to lubricate the bearing 60 and the gear 50. However, the planetary pin is not positioned in the circumferential direction during installation, and the position of the planetary pin after assembly is random, so it is impossible to ensure that the lubricating oil hole on the planetary pin and the lubricating oil hole on the planetary carrier correspond one to one. When supplying oil to the lubricating oil hole, the oil can only be guided by the annular oil groove. Due to the limitation of the oil guide groove structure, the lubricating oil amount distribution of each planetary gear system is eventually inconsistent, thereby affecting the lubrication effect. Utility Model Content

[0004] In order to solve some or all of the technical problems existing in the above-mentioned prior art, the utility model provides a wind power gearbox planetary pin assembly positioning structure comprising a planetary carrier, a planetary pin, a positioning pin and a lubrication assembly, wherein the planetary pin is arranged on the planetary carrier, the planetary pin is positioned with the planetary carrier through the positioning pin, and the lubrication assembly is arranged on the planetary carrier and the planetary pin, wherein:

[0005] The lubrication assembly includes a first lubrication oil passage, an oil guide groove, and a second lubrication oil passage. The oil guide groove is arranged in the circumferential direction of the planetary pin shaft, the first lubrication oil passage is arranged in the planetary carrier, and the second lubrication oil passage is arranged inside the planetary pin shaft and communicates with the oil guide groove.

[0006] Furthermore, in the above-mentioned wind turbine gearbox planetary pin assembly positioning structure, a positioning hole is provided on one side of the planetary pin close to the oil guide groove in the circumferential direction, the positioning hole matches the positioning pin, and one end of the positioning pin is interference fit with the planetary pin through the positioning hole.

[0007] Furthermore, in the above-mentioned wind turbine gearbox planetary pin assembly and positioning structure, the planetary frame is provided with a mounting shaft hole, the mounting shaft hole matches the planetary pin, the planetary pin is installed with the planetary frame through the mounting shaft hole, and the planetary frame is provided with a positioning groove on one side close to the mounting shaft hole.

[0008] Furthermore, in the above-mentioned wind turbine gearbox planetary pin assembly positioning structure, the positioning groove is arranged in a U shape, the opening of the positioning groove corresponds to the positioning hole, and the other end of the positioning pin is clearance-matched with the planetary carrier through the positioning groove.

[0009] Furthermore, in the above-mentioned wind turbine gearbox planetary pin assembly and positioning structure, the oil guide groove is crescent-shaped, and the opening of the oil guide groove corresponds to the first lubricating oil channel.

[0010] The wind turbine gearbox planetary pin assembly and positioning structure of the utility model has the following advantages and beneficial effects:

[0011] The utility model is simple to process and easy to install. By one-to-one correspondence between the first lubricating oil channel in the planetary frame and the oil guide groove of the planetary pin shaft, oil is accurately supplied to the second lubricating oil channel, thereby ensuring that the amount of lubricating oil at the lubrication points in each planetary pin shaft on the planetary frame is consistent, effectively improving the lubrication effect and the service life of the wind power gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0013] Figure 1 This is a schematic diagram of the assembly and positioning structure of the planetary pin shaft of a wind power gearbox in the prior art;

[0014] Figure 2 This is a schematic diagram of the assembly and positioning structure of the planetary pin shaft of the wind power gearbox of the utility model;

[0015] Figure 3 For along Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0016] Figure 4 It is a schematic diagram of the planetary pin structure of the planetary pin assembly and positioning structure of the wind power gearbox of the utility model;

[0017] Figure 5 For along Figure 4 Schematic diagram of the cross-sectional structure of the middle BB;

[0018] Figure 6 For along Figure 3 Schematic diagram of the cross-sectional structure of the CC;

[0019] Figure 7 for Figure 6 The enlarged structural schematic diagram in the D direction shows the positioning groove structure.

[0020] Description of reference numerals:

[0021] 10: planet carrier; 20: planet pin; 30: lubricating oil hole; 40: annular oil groove; 50: bearing; 60: gear;

[0022] 1: planet carrier, 11: mounting shaft hole, 12: positioning groove;

[0023] 2: planetary pin, 21: positioning hole;

[0024] 3: Positioning pin;

[0025] 4: Lubrication assembly, 41: First lubrication oil passage, 42: Oil guide groove, 43: Second lubrication oil passage. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figures 1 to 6 As shown, the planetary pin assembly and positioning structure of the wind power gearbox of the utility model comprises a planetary carrier 1, a planetary pin 2, a positioning pin 3 and a lubrication assembly 4, the planetary pin 2 is arranged on the planetary carrier 1, the planetary pin 2 is positioned with the planetary carrier 1 through the positioning pin 3, and the lubrication assembly 4 is arranged on the planetary carrier 1 and the planetary pin 2, wherein:

[0028] The lubrication assembly 4 includes a first lubrication oil passage 41 , an oil guide groove 42 and a second lubrication oil passage 43 . The oil guide groove 42 is arranged in the circumferential direction of the planetary pin 2 . The first lubrication oil passage 41 is arranged in the planetary carrier 1 . The second lubrication oil passage 43 is arranged inside the planetary pin 2 and communicates with the oil guide groove 42 .

[0029] Furthermore, in the planetary pin shaft assembly and positioning structure of the wind turbine gearbox of the present invention, a positioning hole 21 is provided on one side of the planetary pin shaft 2 close to the oil guide groove 42 in the circumferential direction, and the positioning hole 21 matches the positioning pin 3. One end of the positioning pin 3 is interference fit with the planetary pin shaft 2 through the positioning hole 21, which effectively ensures the stability of the planetary pin shaft 2 during operation.

[0030] Furthermore, in the planetary pin shaft assembly and positioning structure of the wind power gearbox of the utility model, a mounting shaft hole 11 is provided on the planetary carrier 1, the mounting shaft hole 11 matches the planetary pin shaft 2, the planetary pin shaft 2 is installed with the planetary carrier 1 through the mounting shaft hole 11, and a positioning groove 12 is provided on the side of the planetary carrier 1 close to the mounting shaft hole 11.

[0031] Furthermore, in the wind turbine gearbox planetary pin assembly positioning structure of the present invention, the positioning groove 12 is U-shaped, the opening of the positioning groove 12 corresponds to the positioning hole 21, and the other end of the positioning pin 3 is clearance-matched with the planetary carrier 1 through the positioning groove 12, thereby effectively ensuring that the planetary pin 2 and the planetary carrier 1 can be accurately positioned and installed during installation, and at the same time effectively ensuring that the first lubricating oil channel 41 and the oil guide groove 42 can accurately correspond.

[0032] Furthermore, in the wind turbine gearbox planetary pin assembly and positioning structure of the present invention, the oil guide groove 42 is crescent-shaped, and the opening of the oil guide groove 42 corresponds to the first lubricating oil channel 41, which effectively ensures that the first lubricating oil channel 41 supplies oil to the oil guide groove 42 smoothly, thereby improving the lubrication effect.

[0033] Specifically, during assembly, the locating pin 3 is firstly interference-fitted with the locating hole 21 on the planetary pin shaft 2, so that the planetary pin shaft 2 is coaxial with the mounting shaft hole 11, and the locating pin 3 is made to correspond to the locating groove 12. At this time, the planetary pin shaft 2 is passed through the mounting shaft hole 11 from the end of the planetary carrier 1 provided with the locating groove 12. At the same time, the locating pin 3 is clearance-fitted with the locating groove 12 to complete the assembly, and the first lubricating oil passage 41 and the oil guide groove 42 can also achieve precise correspondence, so that the planetary pin shaft 2 is easy to install and position, and at the same time, the stability of the planetary pin shaft 2 during operation can be improved;

[0034] During oil lubrication, the first lubricating oil channel 41 inside the planetary carrier 1 can accurately supply oil to each corresponding oil guide groove 42, so that the amount of oil entering the oil guide groove 42 is consistent, and enters the second lubricating oil channel 43 through the oil guide groove 42 for lubrication, effectively ensuring the lubrication effect of the planetary gear system and at the same time increasing the overall service life.

[0035] In summary, compared with the prior art, the wind turbine gearbox planetary pin assembly and positioning structure of the utility model has the following advantages and beneficial effects:

[0036] The utility model is simple to process and easy to install. By one-to-one correspondence between the first lubricating oil channel in the planetary frame and the oil guide groove of the planetary pin shaft, oil is accurately supplied to the second lubricating oil channel, thereby ensuring that the amount of lubricating oil at the lubrication points in each planetary pin shaft on the planetary frame is consistent, effectively improving the lubrication effect and the service life of the wind power gearbox.

[0037] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A wind turbine gearbox planetary pin assembly and positioning structure, characterized in that: The wind power gearbox planetary pin assembly and positioning structure comprises a planetary carrier, a planetary pin, a positioning pin and a lubrication assembly, wherein the planetary pin is arranged on the planetary carrier, the planetary pin is positioned with the planetary carrier through the positioning pin, and the lubrication assembly is arranged on the planetary carrier and the planetary pin, wherein: The lubrication assembly includes a first lubrication oil passage, an oil guide groove, and a second lubrication oil passage. The oil guide groove is arranged in the circumferential direction of the planetary pin shaft, the first lubrication oil passage is arranged in the planetary carrier, and the second lubrication oil passage is arranged inside the planetary pin shaft and communicates with the oil guide groove.

2. The wind turbine gearbox planetary pin assembly and positioning structure according to claim 1, characterized in that: A positioning hole is provided on one side of the planetary pin shaft close to the oil guide groove in the circumferential direction, the positioning hole matches the positioning pin, and one end of the positioning pin is interference-fitted with the planetary pin shaft through the positioning hole.

3. The wind turbine gearbox planetary pin assembly and positioning structure according to claim 2, characterized in that: The planet carrier is provided with a mounting shaft hole, the mounting shaft hole matches the planet pin shaft, the planet pin shaft is installed with the planet carrier through the mounting shaft hole, and the planet carrier is provided with a positioning groove on one side close to the mounting shaft hole.

4. The wind turbine gearbox planetary pin assembly and positioning structure according to claim 3, characterized in that: The positioning groove is arranged in a U shape, the opening of the positioning groove corresponds to the positioning hole, and the other end of the positioning pin is clearance-matched with the planet carrier through the positioning groove.

5. The wind turbine gearbox planetary pin assembly and positioning structure according to claim 1, characterized in that: The oil guide groove is crescent-shaped, and an opening of the oil guide groove corresponds to the first lubricating oil channel.

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