Quick fastening tool for connecting bolts of wind turbine foundation tower drum

Abstract

The utility model discloses a fan foundation tower connecting bolt quick fastening tool which comprises a driving sleeve on an electric wrench and an output sleeve below the electric wrench, the bottom end of the driving sleeve is provided with a first hexagonal hole, the bottom end of the output sleeve is provided with a second hexagonal hole, and the driving sleeve and the output sleeve are coaxially welded and fixed. The second hexagonal hole is matched with a foundation bolt of a fan tower, the output sleeve is driven to rotate through the driving sleeve after the electric wrench operates, the output sleeve comprises a fixing disc integrally arranged on the top face, a connecting column is fixedly connected to the surface of the fixing disc, and the connecting column is in a regular hexagon shape; the output sleeve is matched with the driving sleeve in an inserted mode through a connecting column. When the quick fastening tool for the connecting bolt of the fan foundation tower drum is used, the mounting efficiency of the foundation bolt can be greatly improved, and the quick fastening tool is stable in overall structure, convenient to carry, convenient to manufacture and suitable for popularization and use.

Description

Technical Field

[0001] This utility model relates to the field of bolt quick-tightening technology, and in particular to a tool for quick-tightening bolts connecting wind turbine foundation towers. Background Technology

[0002] The outer ring of the wind turbine tower has more than 200 foundation bolts. To ensure the overall strength and stability, each foundation bolt needs to be tightened.

[0003] Utility model patent CN218109920U discloses a quick-tightening device for wind turbine tower foundation bolts, including a mobile trolley and a fastening assembly mounted on the mobile trolley. The fastening assembly consists of a first forward / reverse motor, a locking clamp, a fastening belt, a first take-up drum, a second forward / reverse motor, and a second take-up drum. The fastening belt is connected to the first and second take-up drums. The first take-up drum is connected to the first forward / reverse motor, and the second take-up drum is connected to the second forward / reverse motor. Each of the first and second forward / reverse motors is externally connected to a locking clamp. This device solves the technical problem of bolts not being able to be quickly tightened and installed.

[0004] However, in actual use, the above-mentioned device has a complex structure, high manufacturing cost, and is not easy to carry. The trolley also has difficulty moving on many bolts, and the effect of use is not ideal. Therefore, there is an urgent need for a bolt fastening tool that is low in manufacturing cost, easy to use, and easy to carry. Utility Model Content

[0005] The purpose of this utility model is to solve the above problems by providing a quick-tightening tool for wind turbine foundation tower connecting bolts that can greatly improve the installation efficiency of foundation bolts, has a stable overall structure, is easy to carry, and is easy to manufacture.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a quick-tightening tool for connecting bolts of a wind turbine foundation tower, comprising a drive sleeve on an electric wrench and an output sleeve below it. The bottom end of the drive sleeve is provided with a first hexagonal hole, and the bottom end of the output sleeve is provided with a second hexagonal hole. The drive sleeve and the output sleeve are coaxially welded and fixed together. The second hexagonal hole is engaged with the foundation bolt of the wind turbine tower. After the electric wrench is operated, it drives the output sleeve to rotate through the drive sleeve.

[0007] Preferably, the output sleeve includes a fixed disk integrally formed on the top surface, and a connecting post is fixedly connected to the surface of the fixed disk. The connecting post is in the shape of a regular hexagon, and the output sleeve is inserted into the drive sleeve through the connecting post.

[0008] Preferably, after the connecting post is inserted into the drive sleeve, the bottom surface of the drive sleeve is in contact with the surface of the fixed disk.

[0009] Preferably, it further includes a "zigzag" rotating rod. The bottom end of the rotating rod is fixedly connected to the output sleeve. A bearing is provided at the top end of the rotating rod, and the bearing is fixed to the bottom surface of the handle.

[0010] Preferably, a sleeve is provided on the bent vertical section of the rotating rod, and the inner diameter of the sleeve is larger than the outer diameter of the rotating rod.

[0011] A fast tightening tool for the connecting bolts of a fan foundation tower barrel disclosed by the present utility model includes a driving sleeve on an electric wrench and an output sleeve below. A first hexagonal hole is provided at the bottom end of the driving sleeve, and a second hexagonal hole is provided at the bottom end of the output sleeve. The driving sleeve and the output sleeve are coaxially welded and fixed. The second hexagonal hole cooperates with the foundation bolt of the fan tower barrel. After the electric wrench operates, the output sleeve is rotated by the driving sleeve. The output sleeve includes a fixed disk integrally provided on the top surface. A connecting column is fixedly connected to the surface of the fixed disk. The connecting column is regular hexagon. The output sleeve is inserted and cooperated with the driving sleeve through the connecting column. Compared with the prior art, when the fast tightening tool for the connecting bolts of the fan foundation tower barrel is used, it has the beneficial effects of greatly improving the installation efficiency of the foundation bolts, and the overall structure is stable, convenient to carry and easy to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural view of the first embodiment of the present utility model Figure 1 .

[0013] Figure 2 is a schematic structural view of the first embodiment of the present utility model Figure 2 .

[0014] Figure 3 is an assembly schematic view of the first embodiment of the present utility model.

[0015] Figure 4 is a schematic structural view of the second embodiment of the present utility model.

[0016] In the figure: 1. Driving sleeve; 11. First hexagonal hole; 2. Output sleeve; 21. Second hexagonal hole; 22. Fixed disk; 23. Connecting column; 3. Rotating rod; 31. Sleeve; 4. Bearing; 5. Handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Now, the present utility model will be further described in detail with reference to the accompanying drawings. The drawings are simplified schematic views, which only illustrate the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0018] Embodiment 1: Please refer to Figure 1-2, A rapid tightening tool for the connecting bolts of a fan foundation tower cylinder, including a driving sleeve 1 on an electric wrench and an output sleeve 2 below. The bottom end of the driving sleeve 1 is provided with a first hexagonal hole 11, and the bottom end of the output sleeve 2 is provided with a second hexagonal hole 21. The driving sleeve 1 and the output sleeve 2 are coaxially welded and fixed. The second hexagonal hole 21 cooperates with the foundation bolts of the fan tower cylinder. After the electric wrench operates, the output sleeve 2 is driven to rotate by the driving sleeve 1.

[0019] Among them, the output sleeve 2 includes a fixed disk 22 integrally provided on the top surface. A connecting column 23 is fixedly connected to the surface of the fixed disk 22. The connecting column 23 is regular hexagon-shaped. The output sleeve 2 is inserted and cooperated with the driving sleeve 1 through the connecting column 23. After the connecting column 23 is inserted into the driving sleeve 1, the bottom surface of the driving sleeve 1 fits against the surface of the fixed disk 22.

[0020] After fitting, circumferential welding is performed at the fitting position between the driving sleeve 1 and the fixed disk 22 to ensure the coaxial fixed connection between the driving sleeve 1 and the output sleeve 2.

[0021] That is to say, the driving sleeve 1 and the output sleeve 2 are welded into a whole and driven to operate by an electric wrench. When in use, the second hexagonal hole 21 at the bottom end of the output sleeve 2 covers the foundation bolts of the fan tower cylinder. After covering, the electric wrench operates, and the foundation bolts are tightened and locked through the driving sleeve 1 and the output sleeve 2. Thus, the technical problem that the driving sleeve 1 (the first hexagonal hole 11) does not match the foundation bolts is solved. At the same time, the setting of the output sleeve 2 can increase the overall length, saving physical strength during construction and avoiding excessive bending.

[0022] Embodiment 2: Please refer to Figure 4 , It further includes a "U"-shaped rotating rod 3. The bottom end of the rotating rod 3 is fixedly connected to the output sleeve 2. A bearing 4 is provided at the top end of the rotating rod 3. The bearing 4 is fixed on the bottom surface of the handle 5. The rotating rod 3 and the output sleeve 2 at the bottom can rotate below the handle 5 through the bearing 4.

[0023] As an alternative solution in this embodiment, when the electric wrench in Embodiment 1 runs out of power or is charging, the foundation bolts cannot be installed electrically. At this time, the output sleeve 2 with the rotating rod 3 is used. When in use, the output sleeve 2 is also sleeved on the foundation bolts. One hand of the staff holds the handle 5, and the other hand holds the bent vertical section of the rotating rod 3. When it is necessary to tighten the foundation bolts, only the arm holding the bent vertical section needs to be rotated. After the arm holding the bent vertical section rotates, the rotating rod 3 and the output sleeve 2 rotate accordingly, thereby tightening the foundation bolts below. The "U"-shaped setting of the rotating rod 3 can increase the rotation range, improve the locking force on the foundation bolts, and has strong practicability.

[0024] The "ji"-shaped rotating rod 3 can also increase the overall height, save physical strength, and this tool can improve the installation efficiency and increase the tightening degree, showing significant effects compared with traditional wrenches.

[0025] As a preferred solution, a sleeve 31 is provided on the bent vertical section of the rotating rod 3, and the inner diameter of the sleeve 31 is larger than the outer diameter of the rotating rod 3; when in use, hold the sleeve 31, when the arm rotates, the sleeve 31 remains stationary, while the rotating rod 3 rotates through a bearing, avoiding the intervention of the palm in the rotation of the rotating rod 3.

[0026] Based on the above embodiments, the output sleeve 2 and the rotating rod 3 can be made on the construction site, with a low production cost, and the whole can be recycled and is also convenient to carry, with strong practicability.

[0027] Based on the above embodiments, the surfaces of the output sleeve 2 and the rotating rod 3 can also be sprayed with silver powder paint to maintain the appearance beauty and anti-corrosion property of the tool.

[0028] The above Embodiment 1 can quickly improve the construction speed during the construction process and has good effects. The specific implementation method on site is as follows:

[0029] (1) Specific parameters

[0030] The materials used for this tool are mainly: the output sleeve and the electric wrench.

[0031] The output sleeve is selected with a pitch of 70 mm and a height of 52 mm. After production, the total length of the sleeve is 220 mm. To maintain the appearance beauty and anti-corrosion property of the tool during operation, all materials are painted with silver powder paint.

[0032] The electric wrench selected is the 220V Huxiao P1B-DV-30C electric wrench.

[0033] (2) Practical application

[0034] Weld and connect the drive sleeve of the electric wrench and the output sleeve together. Then, after the operator powers on the tool, first conduct a pre-power-on test to check whether it is firm; then during the actual on-site application process, first pre-twist the nut on the bolt for a few threads, and then align the output sleeve with the nut, and trigger the electric wrench to tighten it, achieving the purpose of quickly tightening the foundation bolt.

[0035] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill 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 manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A quick fastening tool for a foundation tower drum connecting bolt of a wind turbine, characterized in that, Including the drive sleeve on the electric wrench and the output sleeve below, the bottom end of the drive sleeve is provided with the first hexagonal hole, the bottom end of the output sleeve is provided with the second hexagonal hole, the drive sleeve and the output sleeve are coaxially welded and fixed, the second hexagonal hole cooperates with the foundation bolt of the fan tower, and the electric wrench rotates the output sleeve through the drive sleeve after running.

2. The quick bolting tool for a fan foundation tower section according to claim 1, wherein The output sleeve comprises a fixed disc integrally arranged on the top surface, the surface of the fixed disc is fixedly connected with a connecting column, the connecting column is a regular hexagon, and the output sleeve is inserted and matched with the drive sleeve through the connecting column.

3. The quick bolting tool for a fan foundation tower section according to claim 2, wherein After the connecting column is inserted with the drive sleeve, the bottom surface of the drive sleeve is attached to the surface of the fixed disc.

4. The quick bolting tool for a fan foundation tower section according to claim 1, wherein It also includes a "few" shaped rotating rod, the bottom end of the rotating rod is fixedly connected with the output sleeve, the top end of the rotating rod is provided with a bearing, and the bearing is fixed on the bottom surface of the handle.

5. The quick bolting tool for a fan foundation tower section according to claim 4, wherein The bent vertical section of the rotating rod is provided with a sleeve, and the inner diameter of the sleeve is greater than the outer diameter of the rotating rod.

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