Pin shaft positioning structure and planetary gear lubrication structure of wind power speed increaser

Abstract

The present invention discloses a pin shaft positioning structure and a planetary gear lubrication structure of a wind power speed increaser, wherein the pin shaft positioning structure of the wind power speed increaser comprises: a planetary carrier, a pin shaft, a bearing and a planetary gear; the pin shaft is fixed to the planetary carrier; the bearing is sleeved on the outer periphery of the pin shaft; the planetary gear is sleeved on the outer periphery of the bearing; the pin shaft positioning structure of the wind power speed increaser also comprises: a retaining ring for axially positioning the pin shaft and a positioning pin for circumferentially positioning the pin shaft; the planetary carrier is formed with a mounting hole; the pin shaft passes through the mounting hole; the inner wall of the mounting hole is formed with a mounting groove for installing the retaining ring; the positioning pin is fixed to the pin shaft; the inner wall of the mounting hole is formed with a positioning groove that cooperates with the positioning pin to limit the rotation of the pin shaft relative to the planetary carrier. The pin shaft positioning structure of the wind power speed increaser can position the pin shaft axially and circumferentially. The planetary gear lubrication structure of the wind power speed increaser can keep the planetary gear oil hole and the planetary carrier oil hole aligned to efficiently lubricate the bearing.

Description

Technical Field

[0001] The invention relates to a pin shaft positioning structure and a planetary gear lubrication structure of a wind power speed increasing box. Background Art

[0002] The traditional design of planetary gear bearing lubrication is to set an annular oil groove and oil hole on the pin shaft. The pin shaft is only axially positioned but not circumferentially positioned. The lubricating oil flows from the oil hole of the planetary carrier into the annular oil groove of the pin shaft, then flows into the oil hole connected to the annular oil groove, and finally flows into the planetary gear bearing to achieve bearing lubrication. However, this annular oil groove structure will increase the length of the lubricating oil flow path, increase flow resistance and pressure loss, and reduce lubrication efficiency. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides a planetary gear lubrication structure and a pin shaft positioning structure of a wind power speed increaser that can efficiently lubricate planetary gear bearings.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A pin shaft positioning structure for a wind power speed increaser, comprising: a planetary carrier, a pin shaft, a bearing and a planetary wheel; the pin shaft is fixed to the planetary carrier; the bearing is sleeved on the outer periphery of the pin shaft; the planetary wheel is sleeved on the outer periphery of the bearing; the pin shaft positioning structure for the wind power speed increaser also comprises: a retaining ring for axially positioning the pin shaft and a positioning pin for circumferentially positioning the pin shaft; the planetary carrier is formed with a mounting hole; the pin shaft passes through the mounting hole; the inner wall of the mounting hole is formed with a mounting groove for mounting the retaining ring; the positioning pin is fixed to the pin shaft; the inner wall of the mounting hole is formed with a positioning groove that cooperates with the positioning pin to limit the rotation of the pin shaft relative to the planetary carrier.

[0006] Furthermore, the planet carrier is formed with a positioning surface for contacting one end of the pin shaft to axially position the pin shaft; the pin shaft is located between the positioning surface and the retaining ring.

[0007] Further, the pin shaft is mounted to the planet carrier by interference fit.

[0008] Further, the pin is mounted to the bearing by interference fit.

[0009] Furthermore, the pin shaft is formed with a planetary gear oil hole for guiding the lubricating oil to the planetary gear to lubricate the planetary gear; the planetary carrier is formed with a planetary carrier oil hole for guiding the flow of the lubricating oil; and the planetary gear oil hole is butted with the planetary carrier oil hole.

[0010] A planetary gear lubrication structure for a wind power speed increaser, comprising: a planetary carrier, a pin shaft, a bearing and a planetary gear; the pin shaft is fixed to the planetary carrier; the bearing is sleeved on the outer periphery of the pin shaft; the planetary gear is sleeved on the outer periphery of the bearing; the planetary gear lubrication structure for the wind power speed increaser also comprises: a retaining ring for axially positioning the pin shaft and a positioning pin for circumferentially positioning the pin shaft; the planetary carrier is formed with a mounting hole; the pin shaft passes through the mounting hole; the inner wall of the mounting hole is formed with a mounting groove for mounting the retaining ring; the positioning pin is fixed to the pin shaft; the inner wall of the mounting hole is formed with a positioning groove that cooperates with the positioning pin to limit the rotation of the pin shaft relative to the planetary carrier; the pin shaft is formed with a planetary gear oil hole for guiding lubricating oil to the planetary gear to lubricate the planetary gear; the planetary carrier is formed with a planetary carrier oil hole for guiding the circulation of lubricating oil; the planetary gear oil hole is butted with the planetary carrier oil hole.

[0011] Furthermore, the planet carrier is formed with a positioning surface for contacting one end of the pin shaft to axially position the pin shaft; the pin shaft is located between the positioning surface and the retaining ring.

[0012] Further, the pin shaft is mounted to the planet carrier by interference fit.

[0013] Further, the pin is mounted to the bearing by interference fit.

[0014] Furthermore, the number of bearings sleeved on the same pin shaft is 2.

[0015] The invention is beneficial in that the positioning pin and the snap ring of the pin shaft positioning structure of the wind power speed increaser can cooperate to position the pin shaft axially and circumferentially, thereby preventing the pin shaft from rotating or displacing relative to the planet carrier. The planetary gear lubrication structure of the wind power speed increaser keeps the planetary gear oil hole and the planetary carrier oil hole aligned to efficiently lubricate the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of a partial structure of a wind power speed increasing gearbox;

[0017] Figure 2 yes Figure 1 A schematic diagram of the local structure from the right side perspective of the middle structure;

[0018] Figure 3 yes Figure 1 A cross-sectional view of a local structure of a wind power speed increasing box from another perspective;

[0019] Figure 4 yes Figure 3 A partial enlarged view of the structure in .

[0020] The pin shaft positioning structure 10 of the wind power speed increaser, the planet carrier 11, the pin shaft 12, the bearing 13, the planetary gear 14, the retaining ring 15, the positioning pin 16, the mounting groove 112, the positioning groove 113, the positioning surface 114, the planetary gear oil hole 121, the planetary carrier oil hole 115, and the planetary gear lubrication structure 20 of the wind power speed increaser. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 to Figure 2 As shown, a pin shaft positioning structure 10 of a wind power speed increaser includes: a planetary carrier 11, a pin shaft 12, a bearing 13 and a planetary gear 14. The pin shaft 12 is fixed to the planetary carrier 11. The bearing 13 is sleeved on the outer periphery of the pin shaft 12. The planetary gear 14 is sleeved on the outer periphery of the bearing 13. The pin shaft positioning structure 10 of the wind power speed increaser also includes: a retaining ring 15 for axially positioning the pin shaft 12 and a positioning pin 16 for circumferentially positioning the pin shaft 12. The planetary carrier 11 is formed with a mounting hole. The pin shaft 12 passes through the mounting hole. The inner wall of the mounting hole is formed with a mounting groove 112 for mounting the retaining ring 15. The positioning pin 16 is fixed to the pin shaft 12. The inner wall of the mounting hole is formed with a positioning groove 113 that cooperates with the positioning pin 16 to limit the rotation of the pin shaft 12 relative to the planetary carrier 11.

[0023] The planetary gear lubrication structure 20 of the wind power speed increaser includes a pin shaft positioning structure 10 of the wind power speed increaser and a lubrication system for lubricating the bearings. As a preferred embodiment, the pin shaft 12 is formed with a planetary gear oil hole 121. The planetary gear oil hole 121 guides the lubricating oil to the planetary gear 14 and the bearing 13 to lubricate the planetary gear 14 and the bearing 13. The planetary carrier 11 is formed with a planetary carrier oil hole 115. The planetary carrier oil hole 115 is used to guide the lubricating oil to flow to the planetary gear oil hole 121. The planetary gear oil hole 121 is connected to the planetary carrier oil hole 115.

[0024] Specifically, the positioning pin 16 is fixed to the pin shaft 12. The pin shaft 12 is inserted into the mounting hole and the positioning pin 16 is located in the positioning groove 113. At this time, the positioning pin 16 prevents the pin shaft 12 from rotating under the limitation of the positioning groove 113. The retaining ring 15 prevents the pin shaft 12 from moving in the axial direction under the limitation of the mounting groove 112. Through such a limiting method, the positioning of the pin shaft 12 is achieved, so that the pin shaft 12 cannot be axially displaced relative to the planetary carrier 11, thereby ensuring that the planetary gear oil hole 121 and the planetary carrier oil hole 115 can always maintain a docking state. The lubricating oil flows in from the planetary carrier oil hole 115 of the planetary carrier 11, and flows into the bearing 13 sleeved on the outer periphery of the pin shaft 12 through the planetary gear oil hole 121 of the pin shaft 12, so as to achieve lubrication of the bearing 13.

[0025] As a preferred embodiment, the planet carrier 11 is formed with a positioning surface 114 for contacting one end of the pin shaft 12 to axially position the pin shaft 12. The pin shaft 12 is located between the positioning surface 114 and the retaining ring 15.

[0026] As a preferred embodiment, the pin 12 is mounted to the planet carrier 11 by interference fit.

[0027] As a preferred embodiment, the pin 12 is installed to the bearing 13 by interference fit.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A pin shaft positioning structure of a wind power speed increaser, comprising: A planet carrier, a pin shaft, a bearing and a planetary gear; the pin shaft is fixed to the planet carrier; The bearing is sleeved on the outer periphery of the pin shaft; The planetary gear is sleeved on the outer periphery of the bearing; it is characterized in that the pin shaft positioning structure of the wind power speed increaser also includes: a retaining ring for axially positioning the pin shaft and a positioning pin for circumferentially positioning the pin shaft; the planetary carrier is formed with a mounting hole; the pin shaft passes through the mounting hole; the inner wall of the mounting hole is formed with a mounting groove for installing the retaining ring; the positioning pin is fixed to the pin shaft; the inner wall of the mounting hole is formed with a positioning groove that cooperates with the positioning pin to limit the rotation of the pin shaft relative to the planetary carrier; the planetary carrier is formed with a positioning surface for contacting one end of the pin shaft to axially position the pin shaft; the pin shaft is located between the positioning surface and the retaining ring; the pin shaft is installed to the planetary carrier by an interference fit; the pin shaft is installed to the bearing by an interference fit; the pin shaft is formed with a planetary gear oil hole for guiding lubricating oil to the planetary gear to lubricate the planetary gear; the planetary carrier is formed with a planetary gear oil hole for guiding the circulation of lubricating oil; the planetary gear oil hole is docked with the planetary gear oil hole.

2. A planetary gear lubrication structure for a wind power speed increaser, comprising: A planet carrier, a pin shaft, a bearing and a planetary gear; the pin shaft is fixed to the planet carrier; The bearing is sleeved on the outer periphery of the pin shaft; The planetary gear is sleeved on the outer periphery of the bearing; it is characterized in that the planetary gear lubrication structure of the wind power speed increaser also includes: a retaining ring for axially positioning the pin shaft and a positioning pin for circumferentially positioning the pin shaft; the planetary carrier is formed with a mounting hole; the pin shaft passes through the mounting hole; the inner wall of the mounting hole is formed with a mounting groove for mounting the retaining ring; the positioning pin is fixed to the pin shaft; the inner wall of the mounting hole is formed with a positioning groove that cooperates with the positioning pin to limit the rotation of the pin shaft relative to the planetary carrier; the pin shaft is formed There is a planetary gear oil hole for guiding lubricating oil to the planetary gear to lubricate the planetary gear; the planetary carrier is formed with a planetary carrier oil hole for guiding the circulation of lubricating oil; the planetary gear oil hole is connected with the planetary carrier oil hole; the planetary carrier is formed with a positioning surface for contacting one end of the pin shaft to axially position the pin shaft; the pin shaft is located between the positioning surface and the retaining ring; the pin shaft is installed to the planetary carrier by interference fit; the pin shaft is installed to the bearing by interference fit; the number of bearings sleeved on the same pin shaft is 2.

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