Pull rod for rotation stopping of slip ring

Abstract

The utility model relates to the technical field of rotation stopping of a rotating slip ring of a wind generating set, in particular to a pull rod for rotation stopping of a slip ring, which comprises a first rod body, a second rod body, a third rod body and a fourth rod body, the first rod body is provided with a concave sliding groove at one end, and the first rod body is provided with a positioning seam communicated with the sliding groove; one end of the second rod body is arranged in the sliding groove in a sliding manner; the first rod body is provided with a positioning seam, the second rod body is provided with a positioning seam, the positioning block is arranged on the second rod body and slidably arranged in the positioning seam, and the two ball head bolt rod end knuckle bearings are arranged at the ends, away from each other, of the first rod body and the second rod body correspondingly; the fixed connecting piece is arranged at the joint of the first rod body and the second rod body in a sleeving mode and used for limiting relative sliding of the joint of the first rod body and the second rod body, and the problem that due to the fact that the length of the pull rod for rotation stopping of the sliding ring cannot be adjusted, installation of the pull rod for rotation stopping torsion is limited is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotation prevention of slip rings of wind turbines, and particularly relates to a pull rod for preventing a slip ring from rotating. Background Art

[0002] The installation structure of the rotating slip ring in a wind turbine is installed through multiple bearings, so it is difficult to ensure its coaxiality. Due to the error in the radial position of the entire transmission chain, the anti-rotation torsion rod of the rotating slip ring usually adopts a rigid structure. In addition, since the rotating slip ring of the wind turbine is installed in a cantilever structure, the entire slip ring will vibrate or even rotate during the operation of the fan. Therefore, a flexible structure is required to prevent its rotation, and at the same time, it can absorb the impact vibration during startup and shutdown.

[0003] Referring to Chinese Patent Application No. CN201420010855.8, the invention name is an anti-rotation torsion rod of a rotating slip ring, which discloses that both ends of a screw rod body are provided with threaded columns, and a rotary joint is connected to the threaded columns. By adjusting the locking nut, the rotary joint can be locked and fixed to the threaded column. The rotary joint is connected to the mounting bolt through a spherical plain bearing, that is, an articulated hole with a spherical inner side wall is provided on the rotary joint, and the articulated hole is articulated with a spherical articulated block. The mounting bolt passes through a connecting hole provided on the spherical articulated block and then is connected to the rotating slip ring assembly, which can adjust the coaxiality between the screw rod body and the rotating slip ring assembly, avoid affecting the use performance due to the assembly error between the screw rod body and the rotating slip ring, and at the same time is convenient for assembly and improves the assembly efficiency. However, in the actual installation process, one rotary joint is connected to the rotating slip ring, and the other rotary joint is connected to the fixing member. There is a certain difference in the distance between the fixing member and the rotating slip ring, and the length of the screw rod body cannot be adjusted, resulting in limited installation of the anti-rotation torsion rod. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pull rod for preventing a slip ring from rotating, and solve the problem that the installation of the pull rod for preventing a slip ring from rotating is limited due to the inability to adjust its own length.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A pull rod for preventing a slip ring from rotating, comprising:

[0007] A first rod body, one end of the first rod body is provided with a concave chute, and the first rod body is provided with a positioning slot communicated with the chute;

[0008] A second rod body, one end of the second rod body is slidably disposed in the chute;

[0009] The positioning block is arranged on the second rod body and is slidably arranged in the positioning slot.

[0010] The spherical head bolt rod end spherical plain bearing, there are two of the spherical head bolt rod end spherical plain bearings, which are respectively arranged at the mutually remote ends of the first rod body and the second rod body; and

[0011] The fixing connecting piece is sleeved on the joint of the first rod body and the second rod body and is used to limit the relative sliding at the joint of the first rod body and the second rod body.

[0012] A further technical solution is that the fixing connecting piece includes a first flange plate threadedly sleeved on the first rod body and a second flange plate slidably sleeved on the second rod body. The positioning block is arranged between the first flange plate and the second flange plate. A plurality of through holes are provided on both the first flange plate and the second flange plate. Screws are provided in the through holes on the second flange plate. One end of the screw away from the second flange plate passes through the first flange plate through the through hole. A plurality of nuts are provided at the mutually remote ends of the first flange plate and the second flange plate, and the plurality of nuts are respectively threadedly connected to the plurality of screws.

[0013] A still further technical solution is that a plurality of the positioning blocks are provided and are distributed in a circumferential annular array along the outer wall of the second rod body. The number and positions of the positioning slots are correspondingly arranged with the positioning blocks.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] By connecting the spherical head bolt rod end spherical plain bearings arranged at both ends of the first rod body and the second rod body to the rotating slip ring and the fixing member respectively, and one end of the second rod body is slidably arranged in the sliding slot, and then installed at the joint of the first rod body and the second rod body through the fixing connecting piece to limit the relative sliding at the joint of the first rod body and the second rod body. In this process, it is convenient to adjust the overall length of the pull rod, making the whole device more practical. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a pull rod for preventing rotation of a slip ring according to the present utility model.

[0017] Figure 2 It is Figure 1 The partial enlarged schematic diagram at A in

[0018] Icon: 1 - First rod body, 2 - Positioning slot, 3 - Second rod body, 4 - Positioning block, 5 - Spherical head bolt rod end spherical plain bearing, 6 - First flange plate, 7 - Second flange plate, 8 - Through hole, 9 - Screw, 10 - Nut. Specific Embodiments

[0019] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Embodiment 1:

[0021] Figure 1-2 A preferred embodiment of a pull rod for preventing rotation of a slip ring according to the present utility model is shown. A pull rod for preventing rotation of a slip ring in this embodiment specifically includes a first rod body 1, one end of the first rod body 1 is provided with a concave chute, and a positioning slot 2 communicating with the chute is provided on the first rod body 1;

[0022] A second rod body 3, one end of the second rod body 3 is slidably disposed in the chute;

[0023] A positioning block 4 is disposed on the second rod body 3 and is slidably disposed in the positioning slot 2,

[0024] Spherical head bolt rod end spherical plain bearings 5, there are two spherical head bolt rod end spherical plain bearings 5, which are respectively disposed at the ends of the first rod body 1 and the second rod body 3 away from each other; and

[0025] A fixing connecting member is sleeved at the connection of the first rod body 1 and the second rod body 3 for restricting relative sliding at the connection of the first rod body 1 and the second rod body 3.

[0026] In the present utility model, the spherical head bolt rod end spherical plain bearings 5 provided at both ends of the first rod body 1 and the second rod body 3 are respectively connected to the rotating slip ring and the fixing member, and one end of the second rod body 3 is slidably disposed in the chute, and then installed at the connection of the first rod body 1 and the second rod body 3 through the fixing connecting member for restricting relative sliding at the connection of the first rod body 1 and the second rod body 3. In this process, it is convenient to adjust the overall length of the pull rod, making the whole device more practical.

[0027] Embodiment 2

[0028] The fixing connecting member includes a first flange 6 threadedly sleeved on the first rod body 1 and a second flange 7 slidably sleeved on the second rod body 3. The positioning block 4 is disposed between the first flange 6 and the second flange 7. A plurality of through holes 8 are provided on both the first flange 6 and the second flange 7. Screws 9 are provided in the through holes 8 on the second flange 7. One end of the screw 9 away from the second flange 7 passes through the first flange 6 through the through hole 8. A plurality of nuts 10 are provided at the ends of the first flange 6 and the second flange 7 away from each other, and the plurality of nuts 10 are respectively threadedly connected to the plurality of screws 9.

[0029] When relatively fixing the first rod body 1 and the second rod body 3, after sliding one end of the second rod body 3 to an appropriate position in the chute, first threadedly connect the first flange 6 to the first rod body 1 and make the first flange 6 contact with one end of the positioning block 4. Then slide the second flange 7 on the second rod body 3 to contact with the other end of the positioning block 4. At this time, respectively pass a plurality of screw rods 9 through the through holes 8 on the first flange 6 and the second flange 7, and then threadedly connect the nuts 10 provided on the first flange 6 and the second flange 7 to the plurality of screw rods 9 respectively. At this time, the adjustment and fixation of the length of the entire pull rod are completed.

[0030] Preferably, a plurality of positioning blocks 4 are provided and are circumferentially and annularly arranged along the outer wall of the second rod body 3. The number and positions of the positioning slots 2 correspond to those of the positioning blocks 4. Providing a plurality of positioning blocks 4 is convenient for increasing the contact areas between the positioning blocks 4 and the first flange 6 and the second flange 7 respectively, so as to ensure that there is no relative sliding at the connection between the first rod body 1 and the second rod body 3 after the first flange 6 and the second flange 7 are connected by the screw rods 9.

[0031] Embodiment 3

[0032] Preferably, both the first rod body 1 and the second rod body 3 are connected to the spherical head bolt rod end joint bearing 5 by threaded rotation, which is convenient for adjusting the coaxiality between the first rod body 1 and the rotating slip ring by adjusting the distance that the spherical head bolt rod end joint bearing 5 is screwed into the first rod body 1.

[0033] Although the present invention has been described herein with reference to a number of illustrative embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and embodiments that will fall within the scope of the principles and spirit disclosed in this application. More specifically, within the scope of this application's disclosure, the drawings, and the claims, various variations and improvements can be made to the components and / or the layout of the subject combination layout. In addition to the variations and improvements made to the components and / or the layout, other uses will also be apparent to those skilled in the art.

Claims

1. A pull rod for preventing a slip ring from rotating, characterized in that, Comprising: A first rod body (1), one end of the first rod body (1) is provided with a concave chute, and a positioning slot (2) communicating with the chute is provided on the first rod body (1); A second rod body (3), one end of the second rod body (3) is slidably arranged in the chute; A positioning block (4), arranged on the second rod body (3) and slidably arranged in the positioning slot (2), Ball stud rod end spherical plain bearings (5), there are two ball stud rod end spherical plain bearings (5), which are respectively arranged at the ends of the first rod body (1) and the second rod body (3) away from each other; and A fixing connecting piece, sleeved at the joint of the first rod body (1) and the second rod body (3) for restricting relative sliding at the joint of the first rod body (1) and the second rod body (3).

2. The pull rod for preventing rotation of a slip ring according to claim 1, wherein: The fixing connecting piece includes a first flange (6) threadedly sleeved on the first rod body (1) and a second flange (7) slidably sleeved on the second rod body (3). The positioning block (4) is arranged between the first flange (6) and the second flange (7). A plurality of through holes (8) are provided on both the first flange (6) and the second flange (7). Screws (9) are provided in the through holes (8) on the second flange (7). One end of the screw (9) away from the second flange (7) passes through the first flange (6) through the through hole (8). A plurality of nuts (10) are provided at the ends of the first flange (6) and the second flange (7) away from each other. The plurality of nuts (10) are respectively threadedly connected to the plurality of screws (9).

3. The pull rod for preventing rotation of a slip ring according to claim 2, characterized in that: There are a plurality of positioning blocks (4), and they are circumferentially arranged in an annular array along the outer wall of the second rod body (3). The number and position of the positioning slots (2) are correspondingly arranged with the positioning blocks (4).

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