CN103277261A - An anti-cracking structure for the joint surface of the inner flange of the wind power tower - Google Patents

Abstract

The invention discloses an anti-cracking structure for a flange joint surface in a wind power tower, which comprises two tower inner flanges connected with the cylinder walls of the two towers, wherein the two tower inner flanges are locked by a plurality of flange bolts, inclined grooves are respectively formed on the inner sides of the two tower inner flanges near the surfaces, which are mutually attached, of the two tower inner flanges, and the inclined grooves on the two tower inner flanges are mutually close to form a wedge-shaped groove; an arc wedge is inserted into the wedge-shaped groove, and the upper side and the lower side of the arc wedge are attached to the two sides of the wedge-shaped groove; two ends of a locking long arc plate are respectively connected with the two tower inner flanges through locking bolts, and the locking long arc plate is pressed against the outer ends of the arc wedges. The invention aims to provide a structure for preventing a flange joint surface in a wind power tower from cracking, which can effectively prevent the flange joint surface in the tower from cracking and plays a role in safety protection.

Description

An anti-cracking structure for the joint surface of the inner flange of the wind power tower

【Technical field】

The invention relates to an anti-cracking structure of an inner flange joint surface of a wind power tower, which belongs to the field of wind power generation.

【Background technique】

The inner flanges of traditional wind power towers are mostly "L"-shaped structures, and the flanges are only connected by flange bolts. In the actual use process, due to the action of the external load, the joint surface of the inner flange is easily cracked, resulting in the reduction of the connection strength of the flange bolt structure, which has a high risk.

【Content of invention】

The purpose of the present invention is to overcome the deficiency that the flange joint surface is easy to crack at present, and provide an anti-cracking structure of the flange joint surface in the wind power tower, which can effectively prevent the cracking of the flange joint surface in the tower, and provide safety protection role.

The present invention adopts following technical scheme:

An anti-cracking structure for the inner flange joint surface of a wind power tower, including two tower inner flanges connecting the two tower walls, the inner flanges of the two towers are locked by a plurality of flange bolts, and the inner flanges of the two towers are locked. On the surface where the inner flanges of the frame are attached to each other, there are slope openings on the inner sides of the inner flanges of the two tower frames, and the slope openings on the inner flanges of the two tower frames are close to each other to form a wedge-shaped groove; an arc-shaped wedge is inserted into the wedge-shaped groove, The upper and lower sides of the arc-shaped wedge fit on both sides of the wedge-shaped groove; the two ends of an anti-loosening long arc plate are respectively connected to the inner flanges of the two towers through anti-loosening bolts, and the anti-loosening long arc plate is pressed against the outer end of the arc-shaped wedge.

The anti-cracking structure of the joint surface of the inner flange of the wind power tower as described above is characterized in that: a boss is reserved on the inner side of the surface close to the inner flanges of the two towers, and the boss and the inner flange of the tower where it is located A slot is formed between the inner flanges, and the two short-arc plates are respectively clamped in the slots on the inner flanges of the upper and lower tower frames. lock tight.

The anti-cracking structure of the joint surface of the inner flange of the wind power tower is characterized in that: two short-arc plates, anti-loosening long-arc plates, arc-shaped wedges, and anti-loosening bolts connecting the short-arc plates and anti-loosening long-arc plates To form an anti-cracking device, multiple anti-cracking devices can be used, and each anti-cracking device is evenly distributed along the inner circumference of the inner flange of the tower.

The beneficial effect of the present invention relative to prior art is:

1. The invention can apply the anti-loosening resistance to the arc wedge by pre-tightening the anti-loosening bolt and the anti-loosening long arc plate, and then the anti-loosening resistance is transmitted to the inner flanges of the two towers by the arc wedge, so as to reach the inner flange of the tower. The purpose of anti-cracking of the flange joint surface is simple in structure and easy to use.

2. The circumferential width of the short-arc plate and the anti-loosening long-arc plate can be increased or decreased according to the size of the inner flange of the tower, and the inner flanges of the two towers can prevent cracking of the joint surface and play a role of safety protection.

【Description of drawings】

Fig. 1 is a schematic diagram of the inner flange connection structure of two towers in the present invention.

Fig. 2 is a schematic diagram of the connection structure between the anti-cracking device and the inner flanges of the two towers in the present invention.

Fig. 3 is a sectional view of the connection structure between the anti-cracking device and the inner flanges of the two towers in the present invention.

Fig. 4 is a schematic diagram of the three-dimensional structure of the anti-cracking device in the present invention.

Fig. 5 is a schematic diagram of the three-dimensional structure of the arc wedge in the present invention.

【Detailed ways】

As shown in Figure 1 and Figure 5,

An anti-cracking structure for the joint surface of the inner flange of a wind power tower, comprising two tower inner flanges 8 connecting the tower tube wall 6 and the tower tube wall 9, and a plurality of flanges passing between the two tower inner flanges 8 The bolts 7 are locked, and on the surfaces where the inner flanges 8 of the two towers are attached to each other, there are slopes on the inner sides of the inner flanges 8 of the two towers, and the slopes on the inner flanges of the two towers are close to each other to form a wedge-shaped groove 10. An arc-shaped wedge 5 is inserted into the wedge-shaped groove 10, and the upper and lower sides of the arc-shaped wedge 5 fit on both sides of the wedge-shaped groove 10; The flange 8 is connected and the anti-loosening long arc plate 4 is pressed against the outer end of the arc wedge 5 .

Wherein, a boss 11 is reserved on the inner side of the surface close to the two tower inner flanges 8, and a card slot is formed between the boss 11 and the inner flange of the inner flange 8 of the tower where the two short arc plates 2 The upper and lower ends of the anti-loosening long-arc plate 4 are locked respectively by the anti-loosening bolt 3 and the two short-arc plates 2, so as to realize the anti-loosening long-arc plate 4 is locked and connected with the inner flanges 8 of the two towers.

The working principle of the present invention is: by pre-tightening the anti-loosening bolt 3, the anti-loosening long arc plate 4 applies the anti-loosening resistance to the arc wedge 5, and then the anti-loosening resistance is transmitted to the inner flanges of the two towers by the arc wedge 5 8, so that the firm connection between the inner flanges 8 of the two towers is not loose, so as to achieve the purpose of preventing cracking of the joint surface of the inner flanges 8 of the towers.

Further improvement: two short-arc plates 2, anti-loosening long-arc plates 4, arc wedges 5 and anti-loosening bolts 3 connecting the short-arc plates 2 and anti-loosening long-arc plates 4 form an anti-cracking device 1 (see Fig. 1 and Fig. 4. As shown in Figure 5), there are multiple anti-cracking devices 1, and each anti-cracking device 1 is evenly distributed along the inner circumference of the inner flange 8 of the tower.

In actual use, the number of anti-cracking devices 1 can be increased or decreased according to the size of the inner flange 8 of the tower, or the circumference of the short arc plate 2 and the anti-loose long arc plate 4 can be increased or decreased according to the size of the inner flange 8 of the tower width.

The above-mentioned implementation examples are preferred implementation examples of the present invention, but the embodiments of the present invention are not limited by the above-mentioned implementation examples, and any other changes, decorations, substitutions, combinations or simplifications that do not deviate from the spirit and principles of the present invention All should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (3)

1. An anti-cracking structure for the joint surface of the inner flange of a wind power tower, including two tower inner flanges connecting the two tower walls, the inner flanges of the two towers are locked by a plurality of flange bolts, and its characteristics It is that: near the surface where the inner flanges of the two towers are attached to each other, there are slopes on the inner sides of the inner flanges of the two towers, and the slopes on the inner flanges of the two towers are close to each other to form a wedge-shaped groove; an arc-shaped wedge Inserted into the wedge-shaped groove, the upper and lower sides of the arc-shaped wedge fit on both sides of the wedge-shaped groove; the two ends of a long anti-loose arc plate are respectively connected to the inner flanges of the two towers through anti-loosening bolts, and the long anti-loose arc plate is pressed against the Curved wedge outer end. 2. According to claim 1, an anti-cracking structure for the joint surface of the inner flanges of the wind power tower, it is characterized in that: a boss is reserved on the inner side of the surface close to the inner flanges of the two towers, and the boss and its location A card slot is formed between the inner edge flanges of the tower inner flange, and the two short arc plates are respectively locked in the card slots on the upper and lower tower inner flanges, and the anti-loose long arc plate and the lower end are passed through the anti-loosening bolts respectively. Lock with two short arc plates. 3. According to claim 2, a kind of anti-cracking structure of the inner flange joint surface of the wind power tower is characterized in that: two short arc plates, anti-loosening long arc plates, arc wedges and connecting short arc plates, anti-loosening long arc plates The anti-loosening bolts of the plate form an anti-cracking device, and multiple anti-cracking devices can be used, and each anti-cracking device is evenly distributed along the inner circumference of the inner flange of the tower.

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