A wind turbine nut quick pre-tightening device

Abstract

The utility model relates to wind power equipment technical field discloses a kind of wind turbine generator unit nut quick pre-tightening device, including main rod, the outside of main rod is fixedly connected with slide rail, the outside of slide rail is slidably connected with sliding block, the left end of sliding block is slidably connected with sliding fixed rod, the outside of sliding fixed rod is fixedly connected with button, the right end inside of sliding block is fixedly connected with driving motor, the driving end of driving motor is fixedly connected with transmission rod, the upper end of transmission rod is fixedly connected with screwing base, the inside of screwing base is provided with screwing sleeve, the upper end of screwing sleeve is provided with slot, the upper end of first connecting piece of main rod is fixedly connected with clamping assembly.Quick replacement in the utility model screwing sleeve, adapt to different size nut, improve pre-tightening efficiency and versatility, drive with two-way screw rod, realize the clamping of bolt rod by reverse thread synchronous drive forearm.

Description

Technical Field

[0001] This utility model relates to the field of wind power equipment technology, and in particular to a quick pre-tightening device for wind turbine nuts. Background Technology

[0002] During the installation and operation and maintenance of wind power equipment, the bolt connections of wind turbine units need to be pre-tightened with nuts to ensure structural stability, but the existing nut pre-tightening methods have obvious limitations.

[0003] Traditional manual pre-tightening relies on tools such as wrenches, which is not only labor-intensive and inefficient, but also prone to uneven pre-tightening force due to manual operation, affecting the reliability of the connection. Although some mechanical pre-tightening devices can reduce manual intervention, they have problems such as complex structure and insufficient adjustment flexibility, making it difficult to adapt to nuts and bolts of different specifications. In addition, errors can easily occur during the pre-tightening process because the bolts need to be fixed manually.

[0004] In response to the problems of low pre-tightening efficiency and insufficient adaptability in the existing technology, this application proposes a wind turbine nut quick pre-tightening device with a compact structure, flexible adjustment and effective reduction of error generation. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quick pre-tightening device for wind turbine nuts, which can flexibly adapt to different sizes, improve efficiency and accuracy, reduce human error, and enhance operational reliability.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A quick pre-tightening device for wind turbine nuts includes a main rod, a slide rail fixedly connected to the outer side of the main rod, a slider slidably connected to the outer side of the slide rail, a sliding fixing rod slidably connected to the left end of the slider, a button fixedly connected to the outer end of the sliding fixing rod, a drive motor fixedly connected to the inner side of the right end of the slider, a transmission rod fixedly connected to the drive end of the drive motor, a tightening base fixedly connected to the upper end of the transmission rod, a tightening sleeve provided on the inner side of the tightening base, a slot provided on the upper end of the tightening sleeve, a first connecting member fixedly connected to the upper end of the main rod, and a clamping assembly provided on the upper end of the first connecting member.

[0008] Furthermore, the clamping assembly includes a clamping connector fixedly connected to the upper end of the first connector, a clamping bottom groove fixedly connected to the right side of the clamping connector, and a limit block fixedly connected to the inner side of the clamping bottom groove.

[0009] Furthermore, the clamping assembly also includes a bidirectional screw rotatably connected to the inner side of the limiting block, a clamping forearm slidably connected to the inner side of the clamping bottom groove, and the left end of the clamping forearm threadedly connected to the outer side of the bidirectional screw.

[0010] Furthermore, a second connector is fixedly connected to the rear end of the bidirectional screw through the rear side of the clamping groove, and a handle is fixedly connected to the outer side of the second connector.

[0011] Furthermore, a ring is fixedly connected to the lower outer side of the main rod, and the upper side of the ring is fixedly connected to the lower side of the slide rail.

[0012] Furthermore, the outer side of the tightening base is threaded with a fixing member, the end of which is tightly attached to the outer side of the lower end of the tightening sleeve.

[0013] Furthermore, a first flat groove is provided on the left side of the main rod, and the right end of the sliding fixing rod is closely attached to the left side of the first flat groove.

[0014] Furthermore, the front and rear sides of the tightening base are provided with second flat grooves, and the front rear end of the fixing member is closely attached to the rear side of the second flat groove.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, mechanical pre-tightening is achieved by cooperating with a drive motor and an adjustable slider, which reduces the intensity of manual operation. The slider can flexibly adapt to nuts of different heights by sliding along the slide rail. The tightening sleeve can be quickly replaced by a fixing part to adapt to nuts of different sizes, thereby improving pre-tightening efficiency and versatility.

[0017] 2. In this utility model, a bidirectional screw and a symmetrical clamping forearm are used. The forearm is driven to approach synchronously through the reverse thread to achieve symmetrical clamping of the bolt rod, avoiding bolt rotation during pre-tightening, reducing manual intervention and errors. The limit block and clamping bottom groove restrict the movement trajectory of the forearm to ensure clamping stability. The clamping force is maintained by thread self-locking, improving operational reliability. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of a wind turbine nut quick pre-tightening device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the slider of a wind turbine nut quick pre-tightening device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping forearm of a wind turbine nut quick pre-tightening device proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of a flat groove for a wind turbine nut quick pre-tightening device proposed in this utility model.

[0022] Legend:

[0023] 1. Main rod; 2. Ring; 3. Slide rail; 4. Slider; 5. First connecting piece; 6. Sliding fixing rod; 7. Button; 8. Drive motor; 9. Transmission rod; 10. Tightening base; 11. Fixing piece; 12. Tightening sleeve; 13. Clamping connecting piece; 14. Clamping bottom groove; 15. Bidirectional screw; 16. Limiting block; 17. Clamping forearm; 18. Second connecting piece; 19. Handle; 20. Slot; 21. First flat groove; 22. Second flat groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 , Figure 3 An embodiment of this utility model provides a wind turbine nut quick pre-tightening device, including a main rod 1, a first connecting member 5 fixedly connected to the upper end of the main rod 1, a clamping connecting member 13 fixedly connected to the upper end of the first connecting member 5, a clamping bottom groove 14 fixedly connected to the right side of the clamping connecting member 13, a limiting block 16 fixedly connected to the inner side of the clamping bottom groove 14, a bidirectional screw 15 rotatably connected to the inner side of the limiting block 16, a clamping front arm 17 slidably connected to the inner side of the clamping bottom groove 14, the left end of the clamping front arm 17 threadedly connected to the outer side of the bidirectional screw 15, a second connecting member 18 fixedly connected to the rear end of the bidirectional screw 15 through the rear side of the clamping bottom groove 14, and a handle 19 fixedly connected to the outer side of the second connecting member 18.

[0026] During operation, the two clamping forearms 17 are positioned between the bolt rod corresponding to the nut to be pre-tightened. Turning the handle 19 causes the bidirectional screw 15 to rotate within the limiting block 16 via the second connector 18. Because the threads on both sides of the bidirectional screw 15 are in opposite directions, the clamping force on the bolt is symmetrically distributed, preventing bolt misalignment. Furthermore, the clamping forearms 17 are restricted to horizontal sliding by the clamping groove 14. The rotation of the bidirectional screw 15 drives the two clamping forearms 17 to move synchronously in opposite directions until they tightly clamp the bolt rod.

[0027] Reference Figure 1 , Figure 2 and Figure 4A slide rail 3 is fixedly connected to the outer side of the main rod 1. A ring 2 is fixedly connected to the outer side of the lower end of the main rod 1. The upper side of the ring 2 is fixedly connected to the lower side of the slide rail 3. A slider 4 is slidably connected to the outer side of the slide rail 3. A sliding fixing rod 6 is slidably connected to the left end of the slider 4. A first flat groove 21 is opened on the left side of the main rod 1. The right end of the sliding fixing rod 6 is tightly attached to the left side of the first flat groove 21. A button 7 is fixedly connected to the outer end of the sliding fixing rod 6. A drive motor 8 is fixedly connected to the inner side of the right end of the slider 4. A transmission rod 9 is fixedly connected to the drive end of the motor 8. A tightening base 10 is fixedly connected to the upper end of the transmission rod 9. A tightening sleeve 12 is provided on the inner side of the tightening base 10. A fixing member 11 is threadedly connected to the outer side of the tightening base 10. A second flat groove 22 is provided on the front and rear sides of the tightening base 10. The front side of the rear end of the fixing member 11 is closely attached to the rear side of the second flat groove 22. The end of the fixing member 11 is closely attached to the outer side of the lower end of the tightening sleeve 12. A slot 20 is provided on the upper end of the tightening sleeve 12.

[0028] The main rod 1 is the core support component of the device. A slide rail 3 is fixedly connected to its outer side along the axial direction. The lower end of the slide rail 3 is fixedly connected to the upper side of the ring 2 on the outer side of the lower end of the main rod 1, forming longitudinal support and limiting for the slide rail 3. Sliding the slider 4 along the slide rail 3 aligns the upper slot 20 of the tightening sleeve 12 with the nut to be pre-tightened. After alignment and insertion, pressing the button 7 to fix the position allows for quick locking or releasing of the slider 4 on the slide rail 3, balancing adjustment flexibility and operational stability. A first flat groove 21 is formed on the left side of the main rod 1 along the axial direction. The first flat groove 21 fits snugly with the sliding fixing rod 6, increasing the fit between the two. The increased contact area and friction make the slider 4 more securely locked. Then, the drive motor 8 is started to rotate the tightening sleeve 12 to pre-tighten the nut. If different sizes of nuts are required, the fixing part 11 can be turned. The second flat groove 22 is opened radially on both the front and rear sides of the tightening base 10. The front rear end of the fixing part 11 is tightly fitted with the inner wall of the rear side of the second flat groove 22 to prevent the fixing part 11 from rotating with the tightening base 10 during tightening or loosening, ensuring stable clamping force on the tightening sleeve 12. Remove the tightening sleeve 12 inside the fixing part 11 and replace it with a tightening sleeve 12 that matches the size of the pre-tightening nut.

[0029] Working principle: During operation, first place the bolt rod corresponding to the nut to be pre-tightened between the two clamping arms 17, turn the handle 19, and drive the bidirectional screw 15 to rotate within the limiting block 16 through the second connecting piece 18. Since the threads on both sides of the bidirectional screw 15 are opposite, and the clamping arms 17 can only slide horizontally due to the limitation of the clamping bottom groove 14, the rotation of the bidirectional screw 15 will drive the two clamping arms 17 to move closer in opposite directions until the bolt rod is firmly clamped. Then, slide the slider 4 along the slide rail 3 so that the slot 20 on the upper side of the tightening sleeve 12 is aligned with the nut to be pre-tightened. After alignment and insertion, press the button 7 to fix the position of the slider 4, and then start the drive motor 8 to drive the tightening sleeve 12 to rotate, completing the pre-tightening operation of the nut. If it is necessary to adapt to nuts of different sizes, the fixing piece 11 can be turned to remove the tightening sleeve 12 inside and replace it with a tightening sleeve 12 that matches the size of the nut to be pre-tightened.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick pre-tightening device for wind turbine nuts, characterized in that, The system includes a main rod (1), a slide rail (3) fixedly connected to the outer side of the main rod (1), a slider (4) slidably connected to the outer side of the slide rail (3), a sliding fixing rod (6) slidably connected to the left end of the slider (4), a button (7) fixedly connected to the outer end of the sliding fixing rod (6), a drive motor (8) fixedly connected to the inner side of the right end of the slider (4), a transmission rod (9) fixedly connected to the drive end of the drive motor (8), a tightening base (10) fixedly connected to the upper end of the transmission rod (9), a tightening sleeve (12) provided on the inner side of the tightening base (10), a slot (20) provided on the upper end of the tightening sleeve (12), a first connecting piece (5) fixedly connected to the upper end of the main rod (1), and a clamping assembly provided on the upper end of the first connecting piece (5).

2. The wind turbine nut quick pre-tightening device according to claim 1, characterized in that: The clamping assembly includes a clamping connector (13) fixedly connected to the upper end of the first connector (5), and a clamping bottom groove (14) fixedly connected to the right side of the clamping connector (13), and a limit block (16) fixedly connected to the inner side of the clamping bottom groove (14).

3. The wind turbine nut quick pre-tightening device according to claim 2, characterized in that: The clamping assembly also includes a bidirectional screw (15) rotatably connected to the inner side of the limiting block (16), and a clamping forearm (17) slidably connected to the inner side of the clamping bottom groove (14). The left end of the clamping forearm (17) is threaded to the outer side of the bidirectional screw (15).

4. The wind turbine nut quick pre-tightening device according to claim 3, characterized in that: The rear end of the bidirectional screw (15) is fixedly connected to the rear side of the clamping bottom groove (14) and a second connector (18) is fixedly connected to the outer side of the second connector (18).

5. A quick pre-tightening device for wind turbine nuts according to claim 1, characterized in that: A ring (2) is fixedly connected to the outer side of the lower end of the main rod (1), and the upper side of the ring (2) is fixedly connected to the lower side of the slide rail (3).

6. The wind turbine nut quick pre-tightening device according to claim 1, characterized in that: The outer side of the tightening base (10) is threaded with a fixing member (11), and the end of the fixing member (11) is tightly attached to the outer side of the lower end of the tightening sleeve (12).

7. A quick pre-tightening device for wind turbine nuts according to claim 1, characterized in that: The main rod (1) has a first flat groove (21) on its left side, and the right end of the sliding fixing rod (6) is close to the left side of the first flat groove (21).

8. A quick pre-tightening device for wind turbine nuts according to claim 6, characterized in that: The front and rear sides of the tightening base (10) are provided with second flat grooves (22), and the front side of the rear end of the fixing member (11) is closely attached to the rear side of the second flat groove (22).

Images