CN204277947U - For the equipment that bolt in fan blade is taken out - Google Patents

Abstract

The utility model provides a device for removing bolts from fan blades, which includes a magnetic base drill, a drill rod installed on its drive shaft, and a drill bit connected with the drill rod. The magnetic base drill is arranged on an adsorption platform. . The utility model has a simple and reasonable structure, so that the broken bolts in the deep holes of the blades can be taken out without high-temperature heating, so that the blades with broken bolts do not need to be returned to the factory for maintenance, which saves high blade maintenance costs for users. The utilization rate of the fan is improved, the economic benefit is considerable, and the shortcoming that the broken bolt coated with the locking glue cannot be taken out is solved.

Description

Equipment for removing bolts from fan blades

technical field

The utility model relates to a device for taking out bolts, in particular to a device for taking out bolts in fan blades.

Background technique

After the wind turbine has been in operation for a long time, the blade fixing bolts are prone to breakage and damage. The bolt fracture is generally divided into the following two situations. The first kind of fracture surface is flush with the pitch bearing flange surface, and the second kind of fracture surface is in the deep hole of the pitch bearing flange.

Among them, the first case is easier to deal with, and the second fracture surface is in the deep hole of the pitch bearing flange, and there is no special tool at present, so it is difficult to take it out; in addition, in order to avoid the bolt loosening, During installation, locking glue is applied to the surface of the bolts, making it more difficult to remove the bolts. Since the blade bolt locking glue is high-strength and non-removable, the normal removal of the bolt must be heated at high temperature to destroy the properties of the glue, but the blade is made of glass fiber reinforced plastic and cannot be removed by heating.

Since the existing bolt extractor has a reverse screw taper structure, and the locking torque value of the above-mentioned bolts coated with high-strength locking glue is far greater than the thread-taking torque value of the reverse thread extractor, the existing The bolt extractor also cannot remove the bolts.

Contents of the invention

In view of the deficiencies in the above problems, the utility model provides a device for taking out the bolts in the fan blades, which can take out the broken bolts in the deep holes of the blades.

In order to achieve the above object, the utility model provides a kind of equipment for taking out the bolts in the fan blades, including a magnetic base drill (1), a drill rod (3) installed on its drive shaft, and a drill rod connected with the drill rod (3) A connected drill bit (4), the magnetic base drill (1) is arranged on the adsorption platform (2).

The above-mentioned device for removing bolts from fan blades, wherein, the adsorption platform (2) is fixed on an adjacent blade, and a bolt fixing hole (21) for connecting with the blade is provided on its surface.

The above-mentioned equipment for removing bolts from fan blades, wherein the drill pipe (3) is composed of a drill pipe body (31) and a drill pipe connection end (32) installed on the top end surface thereof, the The inside of the drill pipe body (31) is a hollow structure, and its bottom end face is an open port (33), and the top of the drill bit (4) is arranged on the drill pipe body through the port (33). (31) INTERIOR.

The above-mentioned equipment for removing bolts from fan blades, wherein the transverse section of the drill pipe body (31) is a cylindrical structure, and the drill pipe connection end (32) is arranged on the drill pipe body ( 31) at the center of the circle.

The above-mentioned equipment for removing bolts from fan blades, wherein the drill bit (4) is a high drill bit with a diameter of 23 mm.

Compared with the prior art, the utility model has the following advantages:

The utility model has a simple and reasonable structure, so that the broken bolts in the deep holes of the blades can be taken out without high-temperature heating, so that the blades with broken bolts do not need to be returned to the factory for maintenance, which saves high blade maintenance costs for users. The utilization rate of the fan is improved, the economic benefit is considerable, and the shortcoming that the broken bolt coated with the locking glue cannot be taken out is solved.

Description of drawings

Fig. 1 is a structural diagram of the utility model.

The main reference signs are explained as follows:

1-Magnetic base drill 2-Adsorption platform 21-Bolt fixing hole

3-drill pipe 31-drill pipe body 32-drill pipe connection end

33-port 4-drill

Detailed ways

As shown in Figure 1, the utility model provides a device for removing bolts from fan blades, including a magnetic base drill 1, a drill rod 3 installed on its transmission shaft, and a drill bit connected to the drill rod 3 4. The magnetic base drill 1 is set on the adsorption platform 2 . Wherein, the drill bit 4 is a high drill bit with a diameter of 23 mm.

The adsorption platform 2 is fixed on the adjacent blade, and a bolt fixing hole 21 for connecting with the blade is provided on its surface.

The drill pipe 3 is composed of a drill pipe body 31 and a drill pipe connecting end 32 installed on its top end surface. The inside of the drill pipe body 31 is a hollow structure, and its bottom end surface is an open port 33. The drill bit 4 The top of the drill pipe body 31 is disposed inside the drill pipe body 31 through the port 33.

The transverse section of the drill pipe body 31 is a cylindrical structure, and the drill pipe connection end 32 is arranged at the center of the drill pipe body 31 .

The above descriptions are only preferred embodiments of the present invention, and are only illustrative rather than restrictive to the invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the invention, but all will fall within the protection scope of the present utility model.

Claims (5)

1. A device for removing bolts from fan blades, characterized in that it includes a magnetic base drill (1), a drill rod (3) installed on its drive shaft, and the drill rod (3) The connected drill bit (4), the magnetic base drill (1) is arranged on the adsorption platform (2). 2. The device for removing bolts from fan blades according to claim 1, characterized in that, the adsorption platform (2) is fixed on the adjacent blades, and the surface thereof is provided with bolts for connecting with the blades Fixing holes (21). 3. The device for taking out the bolts in the fan blade according to claim 1, characterized in that, the drill pipe (3) consists of a drill pipe body (31) and a drill pipe mounted on its top end face. The connecting end (32) is formed, and the inside of the drill pipe body (31) is a hollow structure, and its bottom end face is a port (33) of an open structure, and the top of the drill bit (4) passes through the port (33). ) is arranged inside the drill pipe body (31). 4. The device for removing bolts from fan blades according to claim 3, characterized in that, the transverse section of the drill pipe body (31) is a cylindrical structure, and the drill pipe connection end (32) It is arranged at the center position of the drill pipe body (31). 5. The device for removing bolts from fan blades according to any one of claims 1 to 4, characterized in that the drill bit (4) is a high drill bit with a diameter of 23 mm.