Fastening device for main shaft of wind driven generator

Abstract

The utility model discloses a fastening device for a main shaft of a wind driven generator, which belongs to the technical field of wind driven generators and comprises a fixing seat, a fixing cylinder is fixedly mounted on one side of the fixing seat, a plurality of sliding grooves are formed in the inner wall of the fixing cylinder, fastening plates are slidably mounted in the sliding grooves, and connecting frames are fixedly connected to the outer sides of the fastening plates. The outer side of the fixed cylinder is sleeved with a threaded sleeve in a threaded mode, one side of the threaded sleeve is rotationally connected with a sliding cylinder, and the connecting frame is in sliding fit with the sliding cylinder; two square grooves are formed in one side of the threaded sleeve, square plates are slidably mounted in the square grooves, and a plurality of positioning columns are fixedly connected to one sides of the square plates. According to the fastening device, the threaded sleeve, the sliding sleeve, the connecting frame and the fastening plate are matched to simultaneously compress and fix the main shaft of the wind driven generator in multiple directions, and the threaded sleeve is locked through the matching of the square plate, the screw rod and the positioning rod, so that the fastening effect on the main shaft of the wind driven generator is ensured, and the fastening device is convenient to operate and disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbines, in particular to a fastening device for the main shaft of a wind turbine. Background Technique

[0002] A wind power generation set includes a wind wheel and a generator; the wind wheel includes blades, a hub, reinforcement members, etc.; it has functions such as the blades rotating by the wind force to generate electricity and the generator head rotating. The wind power generation power supply consists of a wind power generation set, a tower for supporting the generating set, a battery charging controller, an inverter, a load unloader, a grid connection controller, a battery pack, etc. When the wind power generation set generates electricity, it is necessary to ensure that the output voltage frequency is constant. This is very necessary for both grid-connected power generation of the wind turbine and wind-solar hybrid power generation. The fastening device for the main shaft of a wind turbine is a commonly used fastening device.

[0003] The patent document with the publication number CN101451512A discloses a fastening device for the main shaft of a wind turbine, which includes a locking nut fixed on the main shaft. There is a section of thread on the main shaft, and the locking nut is screwed onto the main shaft through the thread on the main shaft. It also includes a locking clip, which includes a locking part fixed to the locking nut and an insertion part perpendicular to the locking part and can be inserted into the keyway on the main shaft.

[0004] In the above technical solution, the fastening of the main shaft of the wind turbine is achieved by tightening multiple bolts. This fastening method requires turning multiple bolts during operation, which is time-consuming and laborious, and the subsequent disassembly process is also relatively cumbersome. Therefore, we propose a fastening device for the main shaft of a wind turbine to solve this problem. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fastening device for the main shaft of a wind turbine to solve the problems raised in the above background technique.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solution:

[0007] A fastening device for the main shaft of a wind turbine, including: a fixed seat, a fixed cylinder is fixedly installed on one side of the fixed seat, a plurality of sliding grooves are opened on the inner wall of the fixed cylinder, a fastening plate is slidably installed in the sliding grooves, and a connecting frame is fixedly connected to the outside of the fastening plate;

[0008] A threaded sleeve is threadedly sleeved on the outside of the fixed cylinder, a sliding cylinder is rotatably connected to one side of the threaded sleeve, and the connecting frame is slidably matched with the sliding cylinder;

[0009] On one side of the threaded sleeve, two square grooves are provided. A square plate is slidably installed in the square grooves. On one side of the square plate, a plurality of positioning columns are fixedly connected. On one side of the fixed seat, a plurality of positioning grooves are provided. One end of the positioning column is movably inserted into the corresponding positioning groove.

[0010] Preferably, a screw rod is threadedly connected to the side wall of the square groove. The square plate is threadedly sleeved outside the corresponding screw rod, and one end of the screw rod is fixedly connected with a knob.

[0011] Preferably, a positioning spring is fixedly connected to the other side of the square plate. The other end of the positioning spring is fixedly connected to the side wall of the corresponding square groove.

[0012] Preferably, two guide rods are fixedly installed on the side wall of the square groove. The square plate is slidably sleeved outside the corresponding guide rod.

[0013] Preferably, the connecting frame includes a cross plate, a plurality of vertical rods and a plurality of inclined rods. The ends of the vertical rods and the inclined rods close to each other are respectively fixedly connected to both sides of the cross plate. The other end of the vertical rod is fixedly connected to the fastening plate. A plurality of inclined holes are provided on the outside of the sliding cylinder. The inclined rods are slidably connected in the corresponding inclined holes.

[0014] Preferably, limiting plates are fixedly installed on the inner walls of the top and bottom of the sliding cylinder. Limiting grooves are provided at the top and bottom of the fixed cylinder. The two limiting plates are respectively slidably connected in the corresponding limiting grooves. A limiting rod is fixedly installed in the limiting groove. The limiting plate is slidably sleeved outside the limiting rod. A connecting spring is fixedly connected to one side of the limiting plate. The other end of the connecting spring is fixedly connected to the side wall of the limiting groove.

[0015] Preferably, a limiting ring is fixedly installed on one side of the threaded sleeve. An annular limiting groove is provided on one side of the sliding cylinder. The limiting ring is rotatably connected in the annular limiting groove.

[0016] Preferably, a sliding rod is fixedly connected to the outside of the fastening plate. A groove is provided on the inner wall of the sliding groove. The sliding rod is slidably connected in the groove.

[0017] In the present utility model, for a fastening device for the main shaft of a wind turbine, by placing the main shaft of the generator into the fixed cylinder, then rotating the knob to drive the screw rod to rotate. The screw rod drives the positioning rod to disengage from the positioning groove through the threaded transmission with the square plate. Then rotate the threaded sleeve. The threaded sleeve moves leftward while rotating through the threaded cooperation with the fixed cylinder, and drives the sliding cylinder to move leftward synchronously. The sliding cylinder drives a plurality of fastening plates to approach each other in the middle through the sliding cooperation of the inclined holes and the inclined rods, so as to tightly fix the main shaft of the generator.

[0018] In the present utility model, for a fastening device used for the main shaft of a wind turbine, by reversely rotating the knob to drive the square plate and the positioning rod to move reversely, the positioning rod is reinserted into the positioning groove to lock the rotation of the threaded sleeve, and the square plate is assisted and fixed by the positioning spring, thereby ensuring the fastening stability of the main shaft of the generator and preventing loosening.

[0019] The structure of the present utility model is reasonably designed. By the cooperation of the threaded sleeve, the sliding cylinder, the connecting frame and the fastening plate, the main shaft of the wind turbine is simultaneously pressed and fixed in multiple directions, and the threaded sleeve is locked by the cooperation of the square plate, the screw rod and the positioning rod, thereby ensuring the fastening effect on the main shaft of the generator, and the operation is convenient and the disassembly is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a three-dimensional structural schematic diagram of a fastening device for the main shaft of a wind turbine proposed by the present utility model;

[0021] Figure 2 FIG. is a sectional structural schematic diagram of a fastening device for the main shaft of a wind turbine proposed by the present utility model;

[0022] Figure 3 is Figure 2 a partial enlarged view of part A in;

[0023] Figure 4 is Figure 3 a partial enlarged view of part B in;

[0024] Figure 5 FIG. is a side sectional structural schematic diagram of a fastening device for the main shaft of a wind turbine proposed by the present utility model;

[0025] Figure 6 FIG. is a sectional structural schematic diagram of the fixed cylinder proposed by the present utility model;

[0026] Figure 7 FIG. is a structural schematic diagram of the square plate, the positioning rod and the knob proposed by the present utility model.

[0027] In the figure: 1, fixed seat; 101, positioning groove; 2, fixed cylinder; 3, fastening plate; 4, connecting frame; 401, vertical rod; 402, horizontal plate; 403, inclined rod; 5, sliding cylinder; 6, threaded sleeve; 7, limiting ring; 8, limiting plate; 9, connecting spring; 10, sliding rod; 11, square plate; 12, positioning rod; 13, guiding rod; 14, positioning spring; 15, screw rod; 16, knob. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0029] Referring to Figure 1-7 , a fastening device for the main shaft of a wind turbine, comprising: a fixed seat 1, a fixed cylinder 2 is fixedly installed on one side of the fixed seat 1, a plurality of sliding grooves are opened on the inner wall of the fixed cylinder 2, a fastening plate 3 is slidably installed in the sliding grooves, and a connecting frame 4 is fixedly connected to the outside of the fastening plate 3;

[0030] A threaded sleeve 6 is threadedly sleeved on the outside of the fixed cylinder 2, a sliding cylinder 5 is rotatably connected to one side of the threaded sleeve 6, and the connecting frame 4 is slidably matched with the sliding cylinder 5;

[0031] Two square grooves are opened on one side of the threaded sleeve 6, a square plate 11 is slidably installed in the square grooves, a plurality of positioning columns are fixedly connected to one side of the square plate 11, and a plurality of positioning grooves 101 are opened on one side of the fixed seat 1. One end of the positioning column is movably inserted into the corresponding positioning groove 101.

[0032] In this embodiment, a screw rod 15 is threadedly connected to the side wall of the square groove, the square plate 11 is threadedly sleeved on the outside of the corresponding screw rod 15, the square plate 11 is driven to move horizontally through the threaded transmission between the screw rod 15 and the square plate 11, and one end of the screw rod 15 is fixedly connected to a knob 16, so as to facilitate controlling the rotation of the screw rod 15.

[0033] In this embodiment, a positioning spring 14 is fixedly connected to the other side of the square plate 11, the other end of the positioning spring 14 is fixedly connected to the side wall of the corresponding square groove, to assist in positioning the square plate 11. Two guide rods 13 are fixedly installed on the side wall of the square groove, and the square plate 11 is slidably sleeved on the outside of the corresponding guide rod 13, to guide the square plate 11.

[0034] In this embodiment, the connecting frame 4 includes a cross plate 402, a plurality of vertical rods 401 and a plurality of inclined rods 403. The ends of the vertical rods 401 and the inclined rods 403 close to each other are respectively fixedly connected to both sides of the cross plate 402, and the other end of the vertical rod 401 is fixedly connected to the fastening plate 3. A plurality of inclined holes are opened on the outside of the sliding cylinder 5, and the inclined rods 403 are slidably connected in the corresponding inclined holes.

[0035] In this embodiment, limiting plates 8 are fixedly installed on both the top inner wall and the bottom inner wall of the sliding cylinder 5. Limiting grooves are opened at both the top and the bottom of the fixed cylinder 2. The two limiting plates 8 are respectively slidably connected in the corresponding limiting grooves, and limiting rods are fixedly installed in the limiting grooves. The limiting plates 8 are slidably sleeved on the outside of the limiting rods. A connecting spring 9 is fixedly connected to one side of the limiting plate 8, and the other end of the connecting spring 9 is fixedly connected to the side wall of the limiting groove.

[0036] In this embodiment, a limiting ring 7 is fixedly installed on one side of the threaded sleeve 6, an annular limiting groove is formed on one side of the sliding sleeve 5, and the limiting ring 7 is rotatably connected in the annular limiting groove.

[0037] In this embodiment, a sliding rod 10 is fixedly connected to the outer side of the fastening plate 3, a groove is formed on the inner wall of the sliding groove, and the sliding rod 10 is slidably connected in the groove.

[0038] In this embodiment, during use, the main shaft of the generator is placed into the fixed cylinder 2, then the knob 16 is rotated to drive the screw rod 15 to rotate. The screw rod 15 drives the positioning rod 12 to disengage from the positioning groove 101 through the threaded drive with the square plate 11. Then the threaded sleeve 6 is rotated. The threaded sleeve 6 moves leftward while rotating through the threaded fit with the fixed cylinder 2, and drives the sliding sleeve 5 to move leftward synchronously. The sliding sleeve 5 drives a plurality of fastening plates 3 to approach each other through the sliding fit between the inclined holes and the inclined rods 403, so as to tightly fix the main shaft of the generator.

[0039] By rotating the knob 16 in the reverse direction to drive the square plate 11 and the positioning rod 12 to move in the reverse direction, the positioning rod 12 is inserted back into the positioning groove 101 to lock the rotation of the threaded sleeve 6, and the square plate 11 is assisted and fixed by the positioning spring 14, so as to ensure the fastening stability of the main shaft of the generator and prevent loosening.

[0040] The above has introduced in detail a fastening device for the main shaft of a wind turbine generator provided by the present utility model. Specific embodiments are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A fastening device for a main shaft of a wind turbine generator, characterized in that: include: A fixed seat (1), a fixed cylinder (2) is fixedly mounted on one side of the fixed seat (1), a plurality of sliding grooves are provided on the inner wall of the fixed cylinder (2), a fastening plate (3) is slidably mounted in the sliding groove, and a connecting frame (4) is fixedly connected to the outer side of the fastening plate (3); The outer side of the fixed cylinder (2) is threadedly sleeved with a threaded sleeve (6), one side of the threaded sleeve (6) is rotatably connected with a slide cylinder (5), and the connecting frame (4) is slidably matched with the slide cylinder (5); One side of the threaded sleeve (6) is provided with two square grooves, a square plate (11) is slidably installed in the square groove, one side of the square plate (11) is fixedly connected with a plurality of positioning columns, one side of the fixing seat (1) is provided with a plurality of positioning grooves (101), and one end of the positioning column is movably inserted into the corresponding positioning groove (101).

2. A fastening device for a main shaft of a wind turbine generator according to claim 1, characterized in that: A screw rod (15) is threadedly connected to the side wall of the square groove, the square plate (11) is threadedly sleeved on the outer side of the corresponding screw rod (15), and a knob (16) is fixedly connected to one end of the screw rod (15).

3. A fastening device for a main shaft of a wind turbine generator according to claim 1, characterized in that: A positioning spring (14) is fixedly connected to the other side of the square plate (11), and the other end of the positioning spring (14) is fixedly connected to the side wall of the corresponding square groove.

4. A fastening device for a main shaft of a wind turbine generator according to claim 1, characterized in that: Two guide rods (13) are fixedly mounted on the side walls of the square groove, and the square plate (11) is slidably sleeved on the outer sides of the corresponding guide rods (13).

5. A fastening device for a main shaft of a wind turbine generator according to claim 1, characterized in that: The connecting frame (4) comprises a horizontal plate (402), a plurality of vertical rods (401) and a plurality of oblique rods (403), wherein the ends of the vertical rods (401) and the oblique rods (403) close to each other are respectively fixedly connected to the two sides of the horizontal plate (402), and the other ends of the vertical rods (401) are fixedly connected to the fastening plate (3), and the outer side of the slide cylinder (5) is provided with a plurality of oblique holes, and the oblique rods (403) are slidably connected in the corresponding oblique holes.

6. A fastening device for a main shaft of a wind turbine generator according to claim 1, characterized in that: Limiting plates (8) are fixedly installed on the top inner wall and the bottom inner wall of the slide cylinder (5), and limiting grooves are provided on the top and the bottom of the fixed cylinder (2). The two limiting plates (8) are slidably connected in the corresponding limiting grooves, and limiting rods are fixedly installed in the limiting grooves. The limiting plates (8) are slidably sleeved on the outer side of the limiting rod. A connecting spring (9) is fixedly connected to one side of the limiting plate (8), and the other end of the connecting spring (9) is fixedly connected to the side wall of the limiting groove.

7. A fastening device for a main shaft of a wind turbine generator according to claim 1, characterized in that: A limiting ring (7) is fixedly mounted on one side of the threaded sleeve (6), an annular limiting groove is provided on one side of the slide cylinder (5), and the limiting ring (7) is rotatably connected in the annular limiting groove.

8. A fastening device for a main shaft of a wind turbine generator according to claim 1, characterized in that: A sliding rod (10) is fixedly connected to the outer side of the fastening plate (3), a groove is provided on the inner wall of the sliding groove, and the sliding rod (10) is slidably connected in the groove.

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