Sealing device for plugging hole of slewing bearing

Abstract

The present invention provides a blocking device for a blocking hole of a slewing bearing, comprising: a positioning column; a sliding member, movably arranged on the positioning column; a swinging member, the first end of the swinging member is rotatably connected to the sliding member, and the second end of the swinging member is suitable for cooperating with the inner wall of the blocking hole; a first limiting member, the first end of the first limiting member is fixedly connected to the positioning column, and the second end of the first limiting member cooperates with the swinging member; a second limiting member is used to limit the position of the sliding member on the positioning column; wherein the second end of the first limiting member is configured to be rotatable relative to the swinging member and can slide along the extension direction of the swinging member, so that when the sliding member slides on the positioning column, the angle between the swinging member and the positioning column is changed. The technical solution of the present invention solves the defects of the poor stability of the blocking method of the blocking hole of the slewing bearing in the prior art during assembly and adjustment, and cannot adapt to slewing bearings of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation equipment, and in particular to a blocking device for a blocking hole of a slewing bearing. Background Art

[0002] Wind power slewing bearings are applied to wind turbines and are divided into yaw slewing bearings and pitch slewing bearings. They are key components that can withstand axial loads, radial loads, and overturning moments. The slewing bearing is composed of an outer ring, an inner ring, a rolling element, a spacer, a plug, and a sealing strip. The wind power slewing bearing needs to ensure zero axial clearance and radial clearance, and needs to ensure a torque within a certain range. Therefore, during assembly, it is necessary to repeatedly test different specifications of steel balls to ensure the appropriate torque. When assembling and adjusting the slewing bearing, it is necessary to load the steel ball from the plugging hole. When debugging the torque on the torque machine, it is necessary to plug the plugging hole to prevent the steel ball from escaping or colliding with the raceway. In the prior art, the method of plugging the plugging hole during the assembly and adjustment of the slewing bearing is to use a combination of a waste paper box manual reel, a nylon rod, and a rubber ring to insert into the plugging hole. However, on the one hand, the above structure cannot apply an effective tightening force to the hole wall, and the structure is easy to come out, causing foreign matter to enter the raceway, which is easy to cause quality or safety accidents; on the other hand, the above plugging method cannot adapt to slewing bearings of different specifications. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art that the blocking method of the blocking hole of the slewing bearing during assembly and adjustment is poor in stability and cannot adapt to slewing bearings of different sizes, thereby providing a blocking device for the blocking hole of the slewing bearing.

[0004] The blocking device for the blocking hole of the slewing bearing provided by the present invention comprises: a positioning column; a sliding member, which is movably arranged on the positioning column; a swinging member, the first end of which is rotatably connected to the sliding member, and the second end of which is suitable for cooperating with the inner wall of the blocking hole; a first limiting member, the first end of which is fixedly connected to the positioning column, and the second end of which cooperates with the swinging member; a second limiting member, which is used to limit the position of the sliding member on the positioning column; wherein the second end of the first limiting member is configured to be rotatable relative to the swinging member and to be slidable along the extension direction of the swinging member, so that when the sliding member slides on the positioning column, the angle between the swinging member and the positioning column is changed.

[0005] Optionally, a slide groove is provided on the swinging member, and the first limiting member is hinged in the slide groove.

[0006] Optionally, a connecting hole is provided at the second end of the first limiting member, and the blocking device further includes a rotating rod, the rotating rod is passed through the connecting hole, and the end of the rotating rod is located in the sliding groove.

[0007] Optionally, the swing member includes: a first swing rod and a second swing rod, which are arranged at intervals along the axial direction of the positioning column, the first end of the first swing rod and the first end of the second swing rod are both rotatably connected to the sliding member, and the slide groove is arranged on the first swing rod; a clamping rod, connected between the second end of the first swing rod and the second end of the second swing rod, and the first swing rod and the second end and the second section of the second swing rod are both rotatably connected to the clamping rod, wherein the first swing rod, the second swing rod, the clamping rod and the sliding member are a parallelogram.

[0008] Optionally, the blocking device further includes an elastic member, and the elastic member is arranged between the first limiting member and the sliding member.

[0009] Optionally, a threaded section is provided at one end of the positioning column which is away from the first limiting member, and the second limiting member is a limiting nut sleeved on the threaded section.

[0010] Optionally, the first limiting member includes a mounting frame and a push rod arranged on the mounting frame, the push rod cooperates with the swing member, the mounting frame is fixedly arranged at the end of the positioning column, and the elastic member is arranged between the mounting frame and the sliding member.

[0011] Optionally, the elastic member is a spring, the spring is sleeved on the positioning column, and two ends of the spring are respectively in contact with the sliding member and the mounting frame.

[0012] Optionally, the blocking device further comprises a blocking plate, which is arranged at the first end of the positioning column, and the blocking plate is located on a side of the mounting frame away from the sliding member.

[0013] Optionally, there are multiple swinging members, and the multiple swinging members are arranged at intervals along the circumference of the positioning column. There are multiple first limiting members, and the multiple first limiting members are arranged in a one-to-one correspondence with the multiple swinging members.

[0014] The technical solution of the present invention has the following advantages:

[0015] When using the blocking device of the present invention, first place the blocking device as a whole into the blocking hole, and by changing the position of the sliding member on the positioning column, the swinging member is allowed to swing outward under the limiting action of the first limiting member. The second limiting member limits the position of the sliding member on the positioning column, so that the second end of the swinging member is pressed against the inner wall of the blocking hole to ensure that the blocking device will not fall out of the blocking hole. At the same time, by changing the swing angle of the swinging member, the blocking device can adapt to blocking holes of different sizes, and then adapt to slewing bearings of different sizes. Therefore, the technical solution of the present invention solves the defects of the prior art that the blocking method of the slewing bearing in the blocking hole is poorly stable during assembly and adjustment, and cannot adapt to slewing bearings of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 An exploded schematic diagram showing a blocking device for a blocking hole of a slewing bearing according to the present invention;

[0018] Figure 2 Shows Figure 1 A three-dimensional schematic diagram of the plugging device; and

[0019] Figure 3 A schematic diagram showing the location of the plugging holes in the slewing bearing is shown.

[0020] Description of reference numerals:

[0021] 10. Positioning column; 11. Threaded section; 20. Sliding member; 30. Swinging member; 31. Sliding groove; 32. First swing arm; 33. Second swing arm; 40. First limiting member; 41. Connecting hole; 42. Mounting frame; 43. Push rod; 50. Rotating rod; 60. Pressing rod; 70. Elastic member; 80. Second limiting member; 100. Blocking plate; 110. Blocking hole. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figures 1 to 3 As shown, the blocking device of the blocking hole of the slewing bearing of this embodiment includes a positioning column 10, a sliding member 20, a swinging member 30, a first stopper 40 and a second stopper 80. The sliding member 20 is movably arranged on the positioning column 10. The first end of the swinging member 30 is rotatably connected to the sliding member 20, and the second end of the swinging member 30 is suitable for cooperating with the inner wall of the blocking hole 110. The first end of the first stopper 40 is fixedly connected to the positioning column 10, and the second end of the first stopper 40 cooperates with the swinging member 30. The second stopper 80 is used to limit the position of the sliding member 20 on the positioning column 10. The second end of the first stopper 40 is configured to be rotatable relative to the swinging member 30 and can slide along the extension direction of the swinging member 30, so that when the sliding member 20 slides on the positioning column 10, the angle between the swinging member 30 and the positioning column 10 is changed.

[0027] When using the blocking device of this embodiment, first put the blocking device as a whole into the blocking hole 110, and by changing the position of the sliding member 20 on the positioning column 10, the swinging member 30 swings outward under the limiting action of the first limiting member 40. The second limiting member 80 limits the position of the sliding member 20 on the positioning column 10, so that the second end of the swinging member 30 is pressed against the inner wall of the blocking hole 110 to ensure that the blocking device will not fall out of the blocking hole 110. At the same time, by changing the swing angle of the swinging member 30, the blocking device can adapt to blocking holes of different sizes, and then adapt to slewing bearings of different sizes. Therefore, the technical solution of this embodiment solves the defects of the prior art that the blocking method of the blocking hole of the slewing bearing is poor in stability during assembly and adjustment, and cannot adapt to slewing bearings of different sizes.

[0028] like Figure 1 and Figure 2As shown, in the technical solution of this embodiment, a slide groove 31 is provided on the swing member 30, and the first limit member 40 is hinged in the slide groove 31. Through the above-mentioned arrangement, the end of the first limit member 40 can slide along the extension direction of the slide groove 31 on the one hand, and the swing member 30 can also swing around the end of the first limit member 40 on the other hand. Therefore, when the sliding member 20 moves on the positioning column 10, the swing member 30 can swing and change the angle with the positioning column 10, and at the same time, the arrangement of the slide groove 31 prevents the structure from getting stuck when the swing member 30 swings. By changing the swing angle of the swing member 30, the blocking device of this embodiment can adapt to slewing bearings of different sizes.

[0029] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the second end of the first limiter 40 is provided with a connecting hole 41, and the blocking device further includes a rotating rod 50, which is inserted into the connecting hole 41, and the end of the rotating rod 50 is located in the slide groove 31. Specifically, the rotating rod 50 in this embodiment is a pin, which is inserted into the connecting hole 41 at the end of the first limiter 40. Figure 2 It can be seen that in order to facilitate the installation of the pin, the side wall and the bottom wall of the slide groove 31 have through openings, and the pin can be inserted from the opening of the side wall and connected to the connecting hole 41. At the same time, the end of the first limiter 40 can pass through the opening of the bottom wall of the slide groove 31 for easy installation.

[0030] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the swing member 30 includes a first swing rod 32, a second swing rod 33 and a clamping rod 60. The first swing rod 32 and the second swing rod 33 are arranged at intervals along the axial direction of the positioning column 10, the first end of the first swing rod 32 and the first end of the second swing rod 33 are both rotatably connected to the sliding member 20, and the slide groove 31 is arranged on the first swing rod 32. The clamping rod 60 is connected between the second end of the first swing rod 32 and the second end of the second swing rod 33, and the first swing rod 32 and the second end and the second section of the second swing rod 33 are both rotatably connected to the clamping rod 60. Further, the first swing rod 32, the second swing rod 33, the clamping rod 60 and the sliding member 20 are in a parallelogram shape.

[0031] Specifically, the sliding member 20 in this embodiment is a sleeve, which is sleeved on the positioning column 10, and the first end of the first swing rod 32 and the first end of the second swing rod 33 are both connected to the side wall of the sleeve. It can be further seen from the figure that the first swing rod 32 is arranged at one end of the sleeve facing the first limiter 40, and the second swing rod 33 is arranged at one end of the sleeve away from the first limiter 40, so the slide groove 31 is arranged on the first swing rod 32, and the first limiter 40 cooperates with the first swing rod 32. In this embodiment, preferably, the first swing rod 32 and the second swing rod 33 have the same length and are arranged in parallel, so that the clamping rod 60 and the sleeve are arranged in parallel, so that the first swing rod 32, the second swing rod 33, the clamping rod 60 and the sleeve are in a parallelogram structure. When the sleeve moves on the positioning column 10, the first swing rod 32 swings under the limit of the first limiter 40, and the second swing rod 33 swings synchronously, so that the clamping rod 60 expands outward or retracts inward relative to the sleeve. After the pressing rod 60 expands outward, it can cooperate with the inner wall of the blocking hole 110 to achieve stable installation of the blocking device in the blocking hole 110.

[0032] like Figure 2 and Figure 3 As shown, in the technical solution of this embodiment, the blocking device also includes an elastic member 70, and the elastic member 70 is arranged between the first limiting member 40 and the sliding member 20. Specifically, when the blocking device needs to be taken out from the blocking hole 110, the first limiting member 40 releases the position restriction on the sleeve, and the elastic member 70 pushes the sleeve to move, thereby causing the clamping rod 60 to retract inward. At this time, the blocking device can be taken out from the blocking hole 110.

[0033] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, a threaded section 11 is provided at one end of the positioning column 10 that is away from the first limiting member 40, and the second limiting member 80 is a limiting nut sleeved on the threaded section 11. Specifically, the elastic member 70 and the limiting nut are respectively located on both sides of the sleeve, and the elastic member 70 and the first limiting member 40 are located on the same side. When the elastic member 70 is not compressed, the first swing arm 32 tilts toward the first limiting member 40. Of course, the second limiting member 80 can also adopt other structures to achieve the limiting effect, such as the form of limiting grooves and convex ribs. Therefore, based on the above structure, the specific use of the blocking device in this embodiment is:

[0034] 1. In the initial state, the elastic member 70 is not compressed, and the blocking device is placed in the blocking hole 110 as a whole;

[0035] 2. Rotate the limit nut, which pushes the sleeve to move toward the first limit member 40. At this time, the first swing rod 32 and the second swing rod 33 swing outward synchronously, and the pressing rod 60 moves outward and cooperates with the inner wall of the blocking hole 110. At this time, the elastic member 70 is compressed;

[0036] 3. Tighten the limit nut and make the pressing rod 60 fit tightly against the inner wall of the plugging hole 110. At this time, the assembly process of the plugging device is completed;

[0037] 4. When the blocking device needs to be removed from the blocking hole 110, the limiting nut is rotated in the opposite direction and moves outward. At this time, the elastic force of the elastic member 70 pushes the sleeve to move and the clamping rod 60 contracts inward. At this time, the blocking device can be taken out from the blocking hole 110.

[0038] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the first position-limiting member includes a mounting frame 42 and a push rod 43 disposed on the mounting frame 42, the push rod 43 cooperates with the swing member 30, the mounting frame 42 is fixedly disposed at the end of the positioning column 10, and the elastic member 70 is disposed between the mounting frame 42 and the sliding member 20. Specifically, the mounting frame 42 includes a circular mounting seat, the positioning column and the mounting seat are concentrically disposed, and the push rod 43 is L-shaped, one end of which is connected to the mounting seat, and the other end cooperates with the slide groove 31 on the first swing rod 32.

[0039] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the elastic member 70 is a spring, which is sleeved on the positioning column 10, and the two ends of the spring are respectively in contact with the sliding member 20 and the mounting frame 42. Specifically, one end of the spring is in contact with the end surface of the sleeve, and the other end is in contact with the mounting seat of the mounting frame 42. Of course, the elastic member 70 can also be other structures that can apply elastic force.

[0040] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the blocking device also includes a blocking plate 100, which is arranged at the first end of the positioning column 10, and the blocking plate 100 is located on the side of the mounting frame 42 away from the sliding member 20. Specifically, the blocking plate 100 blocks the space in the blocking hole 110 and prevents the steel column from falling out of the blocking hole 110. Further, the blocking plate 100 includes a stacked base and a nylon pad, which are connected together by screws. Specifically, the nylon pad is relatively soft in texture, and the surface is not easily damaged when the steel ball collides with the nylon pad.

[0041] like Figure 1 and Figure 2As shown, in the technical solution of this embodiment, there are multiple swing members 30, and the multiple swing members 30 are arranged at intervals along the circumference of the positioning column 10, and there are multiple first limit members 40, and the multiple first limit members 40 are arranged one by one with the multiple swing members 30. Specifically, the multiple swing members 30 can enable the blocking device to apply pressure to the hole wall of the blocking hole 110 at multiple positions in the circumferential direction, so that the blocking device can be more stably blocked in the blocking hole 110. Preferably, there are three swing members 30, and the three swing members 30 are evenly arranged along the circumferential direction. Correspondingly, there are also three top rods 43 in the first limit member 40. Further, each swing member 30 includes a first swing rod 32, a second swing rod 33 and a clamping rod 60.

[0042] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A plugging device for a plugging hole of a slewing bearing, characterized in that: include: Positioning column (10); A sliding member (20) is movably arranged on the positioning column (10), wherein the sliding member (20) is a sleeve, and the sleeve is sleeved on the positioning column (10); a swinging member (30), wherein a first end of the swinging member (30) is rotatably connected to the sliding member (20), and a second end of the swinging member (30) is adapted to cooperate with an inner wall of the blocking hole (110); a first limiting member (40), wherein a first end of the first limiting member (40) is fixedly connected to the positioning column (10), and a second end of the first limiting member (40) cooperates with the swinging member (30); A second limiting member (80) used for limiting the position of the sliding member (20) on the positioning column (10); The second end of the first limiting member (40) is configured to be rotatable relative to the swinging member (30) and to be slidable along the extension direction of the swinging member (30), so that when the sliding member (20) slides on the positioning column (10), the angle between the swinging member (30) and the positioning column (10) is changed.

2. The blocking device according to claim 1, characterized in that: The swing member (30) is provided with a slide groove (31), and the first limiting member (40) is hinged in the slide groove (31).

3. The blocking device according to claim 2, characterized in that: The second end of the first limiting member (40) is provided with a connecting hole (41), and the blocking device further comprises a rotating rod (50), the rotating rod (50) is inserted into the connecting hole (41), and the end of the rotating rod (50) is located in the sliding groove (31).

4. The blocking device according to claim 2, characterized in that: The swinging member (30) comprises: A first swing rod (32) and a second swing rod (33) are arranged at intervals along the axial direction of the positioning column (10); a first end of the first swing rod (32) and a first end of the second swing rod (33) are both rotatably connected to the sliding member (20); and the sliding groove (31) is arranged on the first swing rod (32); A clamping rod (60) is connected between the second end of the first swing rod (32) and the second end of the second swing rod (33), and the second end of the first swing rod (32) and the second end of the second swing rod (33) are both rotatably connected to the clamping rod (60). Wherein, the first swing rod (32), the second swing rod (33), the pressing rod (60) and the sliding member (20) are in the form of a parallelogram.

5. The blocking device according to any one of claims 1 to 4, characterized in that: The blocking device further comprises an elastic member (70), wherein the elastic member (70) is arranged between the first limiting member (40) and the sliding member (20).

6. The blocking device according to claim 5, characterized in that: A threaded section (11) is provided at one end of the positioning column (10) that is away from the first limiting member (40), and the second limiting member (80) is a limiting nut sleeved on the threaded section (11).

7. The blocking device according to claim 5, characterized in that: The first limiting member comprises a mounting frame (42) and a push rod (43) arranged on the mounting frame (42), the push rod (43) cooperates with the swing member (30), the mounting frame (42) is fixedly arranged at the end of the positioning column (10), and the elastic member (70) is arranged between the mounting frame (42) and the sliding member (20).

8. The blocking device according to claim 7, characterized in that: The elastic member (70) is a spring, which is sleeved on the positioning column (10), and the two ends of the spring are respectively in contact with the sliding member (20) and the mounting frame (42).

9. The blocking device according to claim 7, characterized in that: The blocking device further comprises a blocking plate (100), wherein the blocking plate (100) is arranged at the first end of the positioning column (10), and the blocking plate (100) is located on a side of the mounting frame (42) away from the sliding member (20).

10. The blocking device according to claim 1, characterized in that: There are a plurality of swinging members (30), and the plurality of swinging members (30) are arranged at intervals along the circumference of the positioning column (10); there are a plurality of first limiting members (40), and the plurality of first limiting members (40) are arranged in a one-to-one correspondence with the plurality of swinging members (30).

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