A wind turbine main shaft bearing

Abstract

The present invention relates to the field of wind turbine application technology, and in particular to a wind turbine main shaft bearing, comprising: a lubrication assembly, wherein the lubrication assembly comprises a bearing seat, a shell connected to one side of the bearing seat, a positioning ring arranged on one side of the bearing seat, a seal matched with the shell, and an unlocking member matched with the shell; and a pop-up assembly, wherein the pop-up assembly comprises an arc plate and a limiting sleeve, wherein the arc plate is arranged on the other side of the bearing seat, and the limiting sleeve is connected to the arc plate. The device of the present invention can scrape and discharge the waste oil previously added to the bearing during the process of adding lubricating oil to the bearing, and can evenly apply the newly added lubricating oil to the bearing, thereby greatly reducing the problem of bearing wear. The wind turbine main shaft is driven by its own rotation, and the process of adding lubricating oil does not require the wind turbine to be shut down, thus having better practicality.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generator application, in particular to a wind power generator main shaft bearing. Background Art

[0002] During the operation of wind power equipment, bearings, as the core components of key parts of wind power equipment, have a great impact on the transmission system and working performance of wind turbines. Most of the failures of wind turbines are related to bearing failures, and about 80% of bearing failures are related to lubrication. Wind turbine main shaft bearings are important rotating body supports. In order to reduce internal friction and wear of bearings, discharge friction heat, prevent bearing overheating, prevent bearing rust and corrosion, and extend their service life, bearings must be lubricated reasonably.

[0003] Traditional bearing lubrication is basically based on forced lubrication, that is, using an external lubrication system to lubricate the bearing through the relevant oil holes. However, after each addition of lubricating oil, the previously added lubricating oil may become viscous due to long-term contact with the bearing, and may contaminate the newly added lubricating oil after contact with the newly added lubricating oil, resulting in the bearing lubricating oil failure before the next addition of lubricating oil, thereby increasing the hidden dangers of bearing wear. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the technical problem to be solved by the present invention is that each time lubricating oil is added, the previously added lubricating oil may become viscous due to long-term contact with the bearing, and may contaminate the newly added lubricating oil after contact with the newly added lubricating oil, resulting in the lubricating oil failure of the bearing before the next lubricating oil is added, thereby increasing the hidden danger of bearing wear.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a wind turbine main shaft bearing, comprising a lubrication assembly, the lubrication assembly comprising a bearing seat, a shell connected to one side of the bearing seat, a positioning ring arranged on one side of the bearing seat, a sealing member matched with the shell, and an unlocking member matched with the shell;

[0007] A pop-up assembly comprises an arc plate and a limiting sleeve, wherein the arc plate is arranged on the other side of the bearing seat, and the limiting sleeve is connected to the arc plate.

[0008] As a preferred solution of the wind turbine main shaft bearing of the present invention, wherein: the bearing seat comprises a shaft rod, a first slide groove and a moving block, the shaft rod is rotatably connected to the bearing in the bearing seat, the first slide groove is opened at the top of the bearing seat, the moving block is slidably connected to the first slide groove, and a second connecting rope is fixedly connected between the limiting sliding sleeve and the moving block;

[0009] The shaft rod comprises a snap-fit ​​groove and a sliding inclined surface block. The snap-fit ​​groove is arranged on the circumferential surface of the shaft rod. The sliding inclined surface block is slidably matched with a groove arranged on the shaft rod.

[0010] As a preferred solution of the wind turbine main shaft bearing described in the present invention, wherein: the shell includes a rotating shaft, a locking member, a cleaning member, an extension ring, a first telescopic ring, an oil filling port and an oil outlet, the rotating shaft is rotatably connected to the inner side of the shell, the locking member is arranged on the inner diameter of the rotating shaft, the cleaning member is arranged on the outer diameter of the rotating shaft, the extension ring is fixedly connected to the circumferential surface of the shell, the first telescopic ring is fixedly connected between one side of the extension ring and one side of the bearing seat, the oil filling port is opened through the upper end of the shell, and the oil outlet is opened through the lower end of the shell.

[0011] As a preferred solution of the wind turbine main shaft bearing described in the present invention, the locking member includes a first spring and a clamping block, one end of the first spring is fixedly connected to the inner diameter of the rotating shaft, and the clamping block is fixedly connected to the other end of the first spring.

[0012] As a preferred solution of the wind turbine main shaft bearing described in the present invention, the cleaning member includes a first connecting seat, a second connecting seat, a scraper and a flexible smear belt, the first connecting seat is fixedly connected to the outer diameter of the rotating shaft, the second connecting seat is connected to one end of the first connecting seat away from the rotating shaft, the scraper is fixedly connected to one end of the second connecting seat, and the flexible smear belt is fixedly connected to one side of the first connecting seat.

[0013] As a preferred solution of the wind turbine main shaft bearing of the present invention, wherein: the first connecting seat comprises a chamber and a second spring, the chamber is opened at one end of the first connecting seat, one end of the second spring is fixedly connected to the inner wall of the chamber, and the other end of the second spring is fixedly connected to the second connecting seat;

[0014] A third spring is fixedly connected between one side of the positioning ring and the other side of the extension ring.

[0015] As a preferred solution of the wind turbine main shaft bearing described in the present invention, the sealing component includes a matching sleeve, a notch, a fourth spring and an abutment plate, the matching sleeve is fixedly connected to one side of the bearing seat, the notch is opened on the circumferential surface of the matching sleeve, one end of the fourth spring is fixedly connected to the inner side of the matching sleeve, the abutment plate is fixedly connected to the other end of the fourth spring, and the circumferential surface of the abutment plate is a smooth curved surface.

[0016] As a preferred solution of the wind turbine main shaft bearing described in the present invention, the unlocking member includes a rotating plate, a torsion spring, a baffle and a push rod, the rotating plate is arranged in a channel inside the shaft rod, the channel is communicated with the engaging groove and the groove opened on the shaft rod, one end of the torsion spring is fixedly connected to one side of the rotating plate, the other end of the torsion spring is fixedly connected to the inner wall of the channel inside the shaft rod, the baffle is fixedly connected to the upper end surface of the rotating plate, the push rod is fixedly connected to the baffle, the push rod is symmetrically arranged along the center line of the rotating plate, and the two push rods are respectively slidably matched with the engaging groove and the groove opened on the shaft rod.

[0017] As a preferred solution of the wind turbine main shaft bearing described in the present invention, wherein: the arc plate includes a second slide groove, a fifth spring, an extrusion block and a fixed slide rod, the second slide groove is opened on the side of the arc plate that is recessed inward, one end of the fifth spring is fixedly connected to the inner wall of the second slide groove, one side of the extrusion block is fixedly connected to the other end of the fifth spring, the extrusion block is slidably connected to the second slide groove, the fixed slide rod is fixedly connected between the arc plate and the bearing seat, the limiting sleeve is slidably connected to the fixed slide rod, and one side of the extrusion block is fixedly connected to a translation ring.

[0018] As a preferred solution of the wind turbine main shaft bearing described in the present invention, wherein: a transmission ring is fixedly connected to one side of the limiting sleeve, the transmission ring is located outside the circumferential surface of the shaft rod, and a first connecting rope is fixedly connected between the transmission ring and the translation ring.

[0019] The beneficial effects of the present invention are as follows: the present invention can scrape and discharge the waste oil previously added to the bearing during the process of adding lubricating oil to the bearing, and can evenly apply the newly added lubricating oil to the bearing, thereby greatly reducing the problem of bearing wear. The wind turbine main shaft is driven by its own rotation, and the process of adding lubricating oil does not require the wind turbine to be shut down, thus having better practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 A schematic diagram of the overall structure of a wind turbine main shaft bearing according to an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the overall structure of a wind turbine main shaft bearing according to an embodiment of the present invention from another angle;

[0023] Figure 3 A schematic cross-sectional structure diagram of a first connecting seat in a wind turbine main shaft bearing according to an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of an unlocking member in a wind turbine main shaft bearing according to an embodiment of the present invention;

[0025] Figure 5 This is an enlarged schematic diagram of the structure of a wind turbine main shaft bearing G according to an embodiment of the present invention;

[0026] Figure 6 This is an enlarged schematic diagram of the structure of a wind turbine main shaft bearing H according to an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the structure of a seal in a wind turbine main shaft bearing according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Furthermore, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Example 1

[0032] Reference Figure 1 - Figure 7 The present embodiment provides a wind turbine main shaft bearing, including a lubrication assembly 100, the lubrication assembly 100 includes a bearing seat 101, a shell 102 connected to one side of the bearing seat 101, a positioning ring 103 arranged on one side of the bearing seat 101, a sealing member 104 cooperating with the shell 102, and an unlocking member 105 cooperating with the shell 102.

[0033] Furthermore, the pop-up assembly 200 includes an arc plate 201 and a limiting sleeve 202 . The arc plate 201 is arranged on the other side of the bearing seat 101 , and the limiting sleeve 202 is connected to the arc plate 201 .

[0034] Furthermore, the bearing seat 101 includes a shaft rod 101a, a first slide groove 101b and a moving block 101c. The shaft rod 101a is rotatably connected to the bearing in the bearing seat 101. The first slide groove 101b is opened at the top of the bearing seat 101. The moving block 101c is slidably connected to the first slide groove 101b. A second connecting rope 202b is fixedly connected between the limiting sleeve 202 and the moving block 101c.

[0035] Furthermore, the shaft 101a includes a snap-fit ​​groove 101a-1 and a sliding inclined surface block 101a-2. The snap-fit ​​groove 101a-1 is provided on the circumferential surface of the shaft 101a, and the sliding inclined surface block 101a-2 is slidably matched with a groove provided on the shaft 101a.

[0036] Furthermore, the shell 102 includes a rotating shaft 102a, a locking member 102b, a cleaning member 102c, an extension ring 102d, a first telescopic ring 102e, an oil filling port 102g and an oil outlet 102h. The rotating shaft 102a is rotatably connected to the inner side of the shell 102, the locking member 102b is arranged on the inner diameter of the rotating shaft 102a, the cleaning member 102c is arranged on the outer diameter of the rotating shaft 102a, the extension ring 102d is fixedly connected to the circumferential surface of the shell 102, the first telescopic ring 102e is fixedly connected between one side of the extension ring 102d and one side of the bearing seat 101, the oil filling port 102g is opened through the upper end of the shell 102, and the oil outlet 102h is opened through the lower end of the shell 102.

[0037] Preferably, a first sealing ring is installed on the inner diameter of the housing 102 to improve the sealing between the shaft 101a and the housing 102.

[0038] It should be noted that a visual window is installed on the circumferential surface of the shell 102 to facilitate observation of the interior, and the visual window can be easily opened and closed, so that the staff can easily inspect the interior.

[0039] In addition, a sealing plug is inserted at the bottom of the oil outlet 102h to facilitate opening and sealing of the oil outlet 102h.

[0040] Furthermore, the locking member 102b includes a first spring 102b-1 and a clamping block 102b-2, one end of the first spring 102b-1 is fixedly connected to the inner diameter of the rotating shaft 102a, and the clamping block 102b-2 is fixedly connected to the other end of the first spring 102b-1.

[0041] It should be noted that a telescopic rod is provided inside the first spring 102b-1, and both ends of the telescopic rod are fixedly connected to the inner diameter of the rotating shaft 102a and the clamping block 102b-2 respectively.

[0042] Furthermore, the cleaning member 102c includes a first connecting seat 102c-1, a second connecting seat 102c-2, a scraper 102c-3 and a flexible smear belt 102c-4. The first connecting seat 102c-1 is fixedly connected to the outer diameter of the rotating shaft 102a, the second connecting seat 102c-2 is connected to one end of the first connecting seat 102c-1 away from the rotating shaft 102a, the scraper 102c-3 is fixedly connected to one end of the second connecting seat 102c-2, and the flexible smear belt 102c-4 is fixedly connected to one side of the first connecting seat 102c-1.

[0043] It should be noted that the scraper 102c-3 abuts against the inner wall of the shell 102, and can effectively scrape off the oil stains on the inner wall of the shell 102. The flexible coating belt 102c-4 contacts the bearing, and can scrape off the oil stains on the bearing and evenly apply the newly added lubricating oil.

[0044] Furthermore, the first connecting seat 102c-1 includes a chamber 102c-1a and a second spring 102c-1b, the chamber 102c-1a is opened at one end of the first connecting seat 102c-1, one end of the second spring 102c-1b is fixedly connected to the inner wall of the chamber 102c-1a, and the other end of the second spring 102c-1b is fixedly connected to the second connecting seat 102c-2.

[0045] Furthermore, a third spring 103a is fixedly connected between one side of the positioning ring 103 and the other side of the extension ring 102d.

[0046] It should be noted that the positioning ring 103 is fixedly connected to the external device.

[0047] Furthermore, the sealing member 104 includes a mating sleeve 104a, a notch 104b, a fourth spring 104c and an abutment plate 104d. The mating sleeve 104a is fixedly connected to one side of the bearing seat 101. The notch 104b is arranged on the circumferential surface of the mating sleeve 104a. One end of the fourth spring 104c is fixedly connected to the inner side of the mating sleeve 104a. The abutment plate 104d is fixedly connected to the other end of the fourth spring 104c. The circumferential surface of the abutment plate 104d is a smooth curved surface.

[0048] It should be noted that a second sealing ring is installed on the side of the abutment plate 104d that contacts the oil filling port 102g, so as to improve the sealing performance at the oil filling port 102g.

[0049] Furthermore, the unlocking member 105 includes a rotating plate 105a, a torsion spring 105b, a baffle 105c and a push rod 105d. The rotating plate 105a is arranged in a channel inside the shaft 101a, and the channel is communicated with the engaging groove 101a-1 and the groove opened on the shaft 101a. One end of the torsion spring 105b is fixedly connected to one side of the rotating plate 105a, and the other end of the torsion spring 105b is fixedly connected to the inner wall of the channel inside the shaft 101a. The baffle 105c is fixedly connected to the upper end surface of the rotating plate 105a, and the push rod 105d is fixedly connected to the baffle 105c. The push rod 105d is symmetrically arranged along the center line of the rotating plate 105a, and the two push rods 105d are respectively slidably matched with the engaging groove 101a-1 and the groove opened on the shaft 101a.

[0050] It should be noted that there are multiple unlocking members 105 in a circular array inside the shaft 101a, which cooperate with the locking groove 101a-1 and the sliding ramp block 101a-2. The inner walls of the shell 102 and the first telescopic ring 102e are provided with an inclined surface inclined toward the side of the bearing seat 101, so that the lubricating oil in the shell 102 contacts the bearing balls to ensure the lubrication effect of the balls.

[0051] In addition, the size and depth of the engaging groove 101a-1 and the groove opened on the shaft rod 101a will not affect the sliding cooperation of the two push rods 105d with the engaging groove 101a-1 and the groove opened on the shaft rod 101a, respectively. During the process that the push rod 105d contacts with the engaging block 102b-2 and the sliding ramp block 101a-2, respectively, the push rod 105d will not get stuck.

[0052] During use, when it is necessary to add lubricating oil to the bearing, first one side of the bearing seat 101 pushes the shell 102. At this time, due to the displacement of the first telescopic ring 102e, the clamping block 102b-2 can be moved to the position of the clamping groove 101a-1. At this time, the oil filling port 102g is in an open state, and the oil outlet 102h is opened. Due to the rotation of the shaft 101a, until the clamping block 102b-2 is engaged with the clamping groove 101a-1, the flexible coating belt 102c-4 is in contact with the bearing. The shaft 101a can drive the scraper 102c-3 to rotate on the inner wall of the shell 102 through the rotating shaft 102a, and the flexible coating belt 102c-4 Cooperating with the bearing surface, lubricating oil is added through the oil filling port 102g, and the scraper 102c-3 and the flexible coating belt 102c-4 can dilute the viscous oil on the bearing and in the housing 102 and discharge it from the oil outlet 102h until the oil discharged from the oil outlet 102h is a clear liquid, which ensures the lubrication quality of the newly added lubricating oil and the bearing to a certain extent. At this time, the flexible coating belt 102c-4 can evenly apply the lubricating oil to the bearing surface, greatly reducing the problem of bearing wear. After closing the oil outlet 102h, the new lubricating oil in the housing 102 can contact the rotating ball in the bearing through the inclined surface of the housing 102 and the inner wall of the first telescopic ring 102e. Example 2

[0053] Reference Figure 1 - Figure 7 Based on the previous embodiment, this embodiment provides a wind turbine main shaft bearing, wherein the arc plate 201 includes a second slide groove 201a, a fifth spring 201b, an extrusion block 201c and a fixed slide rod 201d, the second slide groove 201a is opened on the side of the arc plate 201 that is recessed inward, one end of the fifth spring 201b is fixedly connected to the inner wall of the second slide groove 201a, one side of the extrusion block 201c is fixedly connected to the other end of the fifth spring 201b, the extrusion block 201c is slidably connected to the second slide groove 201a, the fixed slide rod 201d is fixedly connected between the arc plate 201 and the bearing seat 101, the limiting sleeve 202 is slidably connected to the fixed slide rod 201d, and one side of the extrusion block 201c is fixedly connected to a translation ring 201c-1.

[0054] It should be noted that in the initial state of the torsion spring 105b, the rotating plate 105a and the shaft 101a are parallel, the limiting sleeve 202 is sleeved on the circumferential surface of the fixed slide rod 201d, and a limiting groove is penetrated on one side of the limiting sleeve 202 and slidably connected to the fixed slide rod 201d.

[0055] in addition, Figure 1 - Figure 7 The structure in the figure is only used as a reference for mechanical transmission and is not a structural proportional diagram of the final product.

[0056] Furthermore, a transmission ring 202a is fixedly connected to one side of the limiting sliding sleeve 202. The transmission ring 202a is located outside the circumferential surface of the shaft 101a. A first connecting rope 202a-1 is fixedly connected between the transmission ring 202a and the translation ring 201c-1.

[0057] It should be noted that when the moving block 101c is pulled toward one side of the shell 102, the moving block 101c drives the limiting sleeve 202 to slide on the fixed slide rod 201d toward one side of the bearing seat 101 through the second connecting rope 202b. At this time, the limiting sleeve 202 can drive the translation ring 201c-1 to move toward one side of the bearing seat 101 through the transmission ring 202a and the first connecting rope 202a-1. During the movement of the translation ring 201c-1, the translation ring 201c-1 can cooperate with the inclined surface of the sliding ramp block 101a-2. At this time, the fifth spring 201b is compressed under the movement of the extrusion block 201c, and during the movement of the moving block 101c, the translation ring 201c-1 is always in contact with the inclined surface of the sliding ramp block 101a-2.

[0058] In addition, the inner diameter of the transmission ring 202a is larger than the outer diameter of the translation ring 201c-1, and the first connecting rope 202a-1 is always kept in a taut state due to the compression and reset of the fifth spring 201b, and will not come into contact with the sliding ramp block 101a-2.

[0059] During use, when the oil discharged from the oil outlet 102h is clear liquid, the oil outlet 102h is sealed by the sealing plug, and the moving block 101c is pulled toward the side close to the positioning ring 103. At this time, the fifth spring 201b is compressed, and the extrusion block 201c drives the translation ring 201c-1 to contact the inclined surface of the sliding inclined surface block 101a-2, so that the sliding inclined surface block 101a-2 slides into the groove opened on the shaft 101a and squeezes the push rod 105d. At this time, the torsion spring 105b is twisted, so that the push rod 105d in the engaging groove 101a-1 will be engaged. Block 102b-2 is pushed out, and the third spring 103a is reset at this time, so that the shell 102 moves away from the bearing seat 101, and the oil filling port 102g contacts the curved surface of the abutment plate 104d. The fourth spring 104c is compressed to seal the oil filling port 102g, and the moving block 101c is released. The fifth spring 201b is reset, and the torsion spring 105b is reset, thereby completing the lubrication of the bearing and sealing the bearing. The wind turbine main shaft is driven by its own rotation, and the process of adding lubricating oil does not require the wind turbine to be shut down, which has better practicality.

[0060] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0061] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0062] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wind turbine main shaft bearing, characterized in that: include, A lubrication assembly (100), the lubrication assembly (100) comprising a bearing seat (101), a housing (102) connected to one side of the bearing seat (101), a positioning ring (103) arranged on one side of the bearing seat (101), a sealing member (104) cooperating with the housing (102), and an unlocking member (105) cooperating with the housing (102); A pop-up assembly (200), the pop-up assembly (200) comprising an arc-shaped plate (201) and a limiting sliding sleeve (202), the arc-shaped plate (201) being arranged on the other side of the bearing seat (101), and the limiting sliding sleeve (202) being connected to the arc-shaped plate (201); The bearing seat (101) comprises a shaft (101a), a first slide groove (101b) and a moving block (101c); the shaft (101a) is rotatably connected to a bearing in the bearing seat (101); the first slide groove (101b) is provided at the top of the bearing seat (101); the moving block (101c) is slidably connected to the first slide groove (101b); and a second connecting rope (202b) is fixedly connected between the limiting sliding sleeve (202) and the moving block (101c); The shaft rod (101a) comprises a snap-fit ​​groove (101a-1) and a sliding inclined surface block (101a-2); the snap-fit ​​groove (101a-1) is provided on the circumferential surface of the shaft rod (101a); and the sliding inclined surface block (101a-2) is slidably matched with a groove provided on the shaft rod (101a); The housing (102) comprises a rotating shaft (102a), a locking member (102b), a cleaning member (102c), an extension ring (102d), a first telescopic ring (102e), an oil filling port (102g) and an oil outlet (102h); the rotating shaft (102a) is rotatably connected to the inner side of the housing (102); the locking member (102b) is arranged on the inner diameter of the rotating shaft (102a); the cleaning member (102c) is arranged on the outer diameter of the rotating shaft (102a); the extension ring (102d) is fixedly connected to the circumferential surface of the housing (102); the first telescopic ring (102e) is fixedly connected between one side of the extension ring (102d) and one side of the bearing seat (101); the oil filling port (102g) is opened through the upper end of the housing (102); and the oil outlet (102h) is opened through the lower end of the housing (102); The locking member (102b) comprises a first spring (102b-1) and a clamping block (102b-2), one end of the first spring (102b-1) being fixedly connected to the inner diameter of the rotating shaft (102a), and the clamping block (102b-2) being fixedly connected to the other end of the first spring (102b-1).

2. The wind turbine main shaft bearing according to claim 1, characterized in that: The cleaning member (102c) comprises a first connecting seat (102c-1), a second connecting seat (102c-2), a scraper (102c-3) and a flexible smear belt (102c-4); the first connecting seat (102c-1) is fixedly connected to the outer diameter of the rotating shaft (102a); the second connecting seat (102c-2) is connected to an end of the first connecting seat (102c-1) away from the rotating shaft (102a); the scraper (102c-3) is fixedly connected to one end of the second connecting seat (102c-2); and the flexible smear belt (102c-4) is fixedly connected to one side of the first connecting seat (102c-1).

3. The wind turbine main shaft bearing according to claim 2, characterized in that: The first connecting seat (102c-1) comprises a chamber (102c-1a) and a second spring (102c-1b), the chamber (102c-1a) is opened at one end of the first connecting seat (102c-1), one end of the second spring (102c-1b) is fixedly connected to the inner wall of the chamber (102c-1a), and the other end of the second spring (102c-1b) is fixedly connected to the second connecting seat (102c-2); A third spring (103a) is fixedly connected between one side of the positioning ring (103) and the other side of the extension ring (102d).

4. The wind turbine main shaft bearing according to claim 3, characterized in that: The sealing component (104) comprises a matching sleeve (104a), a notch (104b), a fourth spring (104c) and an abutment plate (104d); the matching sleeve (104a) is fixedly connected to one side of the bearing seat (101); the notch (104b) is formed on the circumferential surface of the matching sleeve (104a); one end of the fourth spring (104c) is fixedly connected to the inner side of the matching sleeve (104a); the abutment plate (104d) is fixedly connected to the other end of the fourth spring (104c); and the circumferential surface of the abutment plate (104d) is a smooth curved surface.

5. The wind turbine main shaft bearing according to claim 4, characterized in that: The unlocking member (105) comprises a rotating plate (105a), a torsion spring (105b), a baffle (105c) and a push rod (105d); the rotating plate (105a) is arranged in a channel inside the shaft (101a); the channel is communicated with the engaging groove (101a-1) and a groove opened on the shaft (101a); one end of the torsion spring (105b) is fixedly connected to one side of the rotating plate (105a); the other end of the torsion spring (105b) is fixedly connected to one side of the rotating plate (105a); The end is fixedly connected to the inner wall of the channel inside the shaft rod (101a), the baffle plate (105c) is fixedly connected to the upper end surface of the rotating plate (105a), the push rod (105d) is fixedly connected to the baffle plate (105c), the push rod (105d) is symmetrically arranged along the center line of the rotating plate (105a), and the two push rods (105d) are respectively slidably matched with the engaging groove (101a-1) and the groove opened on the shaft rod (101a).

6. The wind turbine main shaft bearing according to claim 5, characterized in that: The arc plate (201) comprises a second slide groove (201a), a fifth spring (201b), an extrusion block (201c) and a fixed slide rod (201d); the second slide groove (201a) is arranged on a side of the arc plate (201) which is recessed inward; one end of the fifth spring (201b) is fixedly connected to an inner wall of the second slide groove (201a); one side of the extrusion block (201c) is fixedly connected to the other end of the fifth spring (201b); the extrusion block (201c) is slidably connected to the second slide groove (201a); the fixed slide rod (201d) is fixedly connected between the arc plate (201) and the bearing seat (101); the limiting sleeve (202) is slidably connected to the fixed slide rod (201d); and one side of the extrusion block (201c) is fixedly connected to a translation ring (201c-1).

7. The wind turbine main shaft bearing according to claim 6, characterized in that: A transmission ring (202a) is fixedly connected to one side of the limiting sliding sleeve (202), the transmission ring (202a) is located outside the circumferential surface of the shaft rod (101a), and a first connection rope (202a-1) is fixedly connected between the transmission ring (202a) and the translation ring (201c-1).

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