CN204827811U - Bolt protection casing and wind generating set - Google Patents

Abstract

The utility model provides a bolt protective cover and a wind turbine generator set. The bolt protective cover includes a protective cover body, which is arranged on a foundation anchor bolt and has an accommodation cavity for accommodating the foundation anchor bolt. The bottom of the protective cover body has an eversion. Edge; sealing gasket, which is pressed on the end face of the tower flange through the outward flange. The utility model has the advantages of simple structure, low cost, easy use, and can prevent external rainwater or moisture from corroding bolts, nuts and flat washers.

Description

Bolt guards and wind turbines

technical field

The utility model relates to the protection technology of components, in particular to a bolt protective cover and a wind power generating set.

Background technique

Large-scale wind turbines are connected to the foundation through the foundation anchor bolts embedded in the foundation, and then fixed and installed on the foundation through the tightening of nuts; the heads of nuts and bolts are exposed outside, and external rain and moisture are likely to cause bolts, Corrosion of nuts.

Fig. 1 is a structural schematic diagram of a bolt shield disclosed in Chinese patent CN102788074A. The bolt shield includes a cover body 1', a special-shaped opening groove 2' and a fixed connection seat 3', the fixed connection seat 3' is sleeved on the screw rod 4', and the fixed connection seat 3' is pressed on the screw rod 4' through the nut 5' on the substrate. The cover body 1' is connected to the fixed connection seat 3' through threads, and a sealing ring 7' is arranged at the connection between the two, and a screw 6' is also provided at the cooperation between the cover body 1' and the fixed connection seat 3'.

In the technical solution disclosed in this patent, since the fixed connection seat 3' is sleeved on the screw rod 4' and is in contact with the substrate, and there is no sealing structure between the fixed connection seat 3' and the substrate, it is difficult to prevent water vapor from entering through the gap Inside the cover body 1'. In addition, in the assembly process, since the fixed connection seat 3' needs to be sleeved on the outside of the screw rod 4', and then fixed by the nut 5', the cover body 1' and the fixed connection seat 3' can be assembled, so that this The assembly process is complicated and difficult to install. Furthermore, after the assembly is completed, the screw 6' is still exposed to the air, which causes the thread of the screw 6' to corrode easily, which brings difficulties to subsequent disassembly.

Utility model content

The purpose of the utility model is to provide a bolt protective cover and a wind power generating set which are easy to install and can prevent bolts and nuts from being corroded.

In order to achieve the above object, the utility model provides a bolt protective cover, comprising: a protective cover body, which is set on the foundation anchor bolt and has an accommodation cavity for accommodating the foundation anchor bolt, and the bottom of the protective cover body has an outer flange; The pad is pressed on the end face of the tower flange through the outward flange.

Further, the inner wall of the protective cover body has a threaded segment that matches with the thread on the foundation anchor bolt.

Further, the protective cover body includes a first accommodating part and a second accommodating part; the first accommodating part accommodates the head of the foundation anchor bolt, and the threaded section is arranged on the inner wall of the first accommodating part and is compatible with the thread of the foundation anchor bolt head. Cooperate; the second accommodation part is arranged below the first accommodation part, the second accommodation part is cylindrical in cross-section larger than the cross-section of the nut that cooperates with the foundation anchor bolt, and the outer flange is arranged on the bottom of the second accommodation part.

Further, the bolt shield is integrally formed by the first receiving part, the second receiving part and the outer flange.

Further, the cross-section of the second receiving part, the outer flange and the gasket are all annular, and the outer peripheral surface of the outer flange protrudes radially beyond the outer peripheral surface of the gasket.

Further, a flat pad is sleeved on the foundation anchor bolt, and the inner diameter of the sealing pad is larger than the outer diameter of the flat pad.

Further, the material of the gasket is a material with elastic properties.

Further, the material of the shield body is plastic.

According to another aspect of the present utility model, a wind power generating set is provided, including a tower, foundation anchor bolts, and a bolt shield, where the bolt shield is the bolt shield mentioned above.

By covering the base anchor bolts with a protective cover body and sealing it with a gasket, the inside of the protective cover body becomes a closed space to prevent water vapor from entering the protective cover body, thereby preventing the foundation anchor bolts from being corroded by water vapor. When the bolt guard is installed, it is directly covered outside the foundation anchor bolts, and the gasket is directly pressed on the tower flange through the outer flange, which is convenient and quick to install, and can effectively prevent external rain or moisture from affecting the foundation anchor bolts. cause rust.

Description of drawings

Fig. 1 is the structural representation of the bolt shield in the prior art;

Fig. 2 is the working state schematic diagram of an embodiment of the bolt guard of the present invention;

FIG. 3 is a cross-sectional view of the protective cover body in FIG. 2 .

Among them: 1', cover body; 2', special-shaped opening groove; 3', fixed connection seat; 4', screw rod; 5', nut; 6', screw; 7', sealing ring; 1, protective cover body; 11 , the first containing part; 111, the thread section; 12, the second containing part; 121, the outer flange; 2, the gasket; 3, the foundation anchor bolt; 4, the nut; 5, the flat washer; 6, the tower flange .

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the bolt guard of the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in FIGS. 2 and 3 , the bolt shield of this embodiment includes a shield body 1 and a gasket 2 . Wherein, the protective cover body 1 is set on the foundation anchor bolt 3 and has a receiving chamber for accommodating the foundation anchor bolt 3 , and the bottom of the protective cover body 1 has an outer flange 121 . The gasket 2 is pressed on the end surface of the tower flange 6 through the outer flange 121 to seal the accommodating cavity.

The bolt shield cooperates with the shield body 1 and the gasket 2 to form a closed space to prevent water vapor from corroding the foundation anchor bolt 3 . Through the pressure fit between the outer flange 121 and the gasket 2, the process of opening a gasket groove in the processing process is omitted, the processing steps are less, the processing cost is lower, and it solves the problem that the thin-walled parts cannot be opened with a gasket groove and cannot be used. Gasket problem. In addition, only need to press the outer flange 121 on the gasket 2 during installation, which makes the installation more rapid and convenient.

In this embodiment, the shape of the protective cover body 1 can be a bell shape or other shapes that can cooperate with the foundation anchor bolt 3 and the nut 4 . The bell shape mentioned here means that the protective cover body 1 is composed of two cylinders with different diameters, as shown in Fig. A shape composed of two parts together.

Specifically, the shield body 1 includes a first accommodating portion 11 and a second accommodating portion 12 . The first accommodating part 11 is cylindrical with a closed top, and its inner wall is provided with a threaded section 111 that matches the head of the foundation anchor bolt 3 placed in the bolt shield. The second receiving part 12 is cylindrical in cross-section larger than the cross-section of the nut 4 that cooperates with the foundation anchor bolt 3, its top communicates with the first receiving part 11 through an opening, and the outer flange 121 is arranged on the bottom of the second receiving part 12 , for matching with gasket 2.

The connection between the threaded section 111 and the foundation anchor bolt 3 can ensure that the thread shield is fixed stably and reliably, and at the same time facilitates the installation of the thread shield on the foundation anchor bolt 3 . In this way, there is no need to add other fixing parts when installing the threaded protective cover, and it is not necessary to damage the protective cover body 1, which can better prevent water vapor from entering, and there is no need to worry about the rust prevention of the fixing parts.

In other embodiments, the fixing method of the protective cover body 1 may also be bonding. For example, the sealing gasket 2 is pasted on the outer flange 121 , and then the protective cover body 1 and the sealing gasket 2 are pasted together on the tower flange 6 .

Preferably, the bolt shield is an integrally formed thin-walled part, which makes the bolt shield more convenient to process and easily ensures machining accuracy.

Of course, in other embodiments, each part of the bolt guard can be processed separately and then assembled. For example, a nut is fixedly arranged on the first receiving part 11 as the threaded segment 111, and the first receiving part 11, the second receiving part 12 and the outer flange 121 can also be integrally formed in the first receiving part by machining. Process thread segment 111 on 11.

When installing the bolt guard, as shown in Figure 2 and Figure 3, the guard body 1 is set on the foundation anchor bolt 3 and the nut 4, so that the first receiving part 11 accommodates the head of the foundation anchor bolt 3 and makes the The second accommodation part 12 accommodates the nut 4, and through the screwing action of the threaded section 111 and the head thread of the foundation anchor bolt 3, the outer flange 121 of the second accommodation part 12 and the tower flange 6 jointly clamp the gasket 2 , so that the head of the foundation anchor bolt 3 and the nut 4 are sealed inside the protective cover body 1 . Through the abutment of the outer flange 121 of the second receiving part 12 on the sealing gasket 2, the sealing effect is fully guaranteed, and at the same time, damage to the sealing gasket 2 can be avoided, so as to prevent the head of the foundation anchor bolt 3 and the nut 4 from contacting the outside Rain or moisture can cause corrosion.

Specifically, the material of the sealing gasket 2 can be made of elastic materials such as silica gel or rubber, so as to achieve a better sealing effect. The protective cover body 1 can be manufactured by plastic injection molding with low cost, which is more convenient for injection molding processing, lower processing cost, higher processing efficiency, and lower manufacturing cost.

As a preferred embodiment, as shown in Figure 2 and Figure 3, the cross section of the second receiving part 12, the outer flange 121 and the sealing gasket 2 are all circular, and the outer peripheral surface of the outer flange 121 is along the Radially protrudes from the outer peripheral surface of the gasket 2 , that is, the outer diameter of the gasket 2 is smaller than the outer diameter of the outer flange 121 . In this way, the outer ring edge of the gasket 2 is completely pressed within the ring of the outer flange 121, avoiding the phenomenon that the outer ring edge of the gasket 2 rolls up, which is more conducive to sealing, and helps to improve the sealing performance of the gasket 2. service life.

Wherein, the inner diameter of the gasket 2 is larger than the outer diameter of the nut 4 . In actual use, the nut 4 can be directly pressed on the tower flange 6 through the tightening action between the foundation anchor bolt 3, or can be pressed on the tower flange 6 through the flat washer 5, and the gasket 2 can Be enclosed within nut 4 outside.

As shown in Fig. 2 and Fig. 3, usually the foundation anchor bolt 3 is set with a flat washer 5 matched with the nut 4, and the flat washer 5 may be a high-strength washer to improve connection reliability and service life. The flat pad 5 is fixed between the nut 4 and the tower flange 6 through the tightening action of the nut 4 and the foundation anchor bolt 3, and the cross section of the second receiving part 12 is larger than that of the flat pad 5, so that the second receiving part 12 simultaneously Holds nut 4 and flat washer 5. At this time, the inner diameter of the gasket 2 is larger than the outer diameter of the flat gasket 5 , so that the gasket 2 can be sleeved on the outside of the nut 4 and the flat gasket 5 .

According to another aspect of the present utility model, a wind power generating set is provided, which includes a tower, foundation anchor bolts 3 and a bolt shield, where the bolt shield is the bolt shield mentioned above. The bolt protective cover can protect the foundation anchor bolt 3 in a harsh environment, prevent corrosion and rust, and improve equipment safety.

The bolt shield of the above embodiment has the following advantages:

The inner wall of the first accommodating part is provided with a threaded section matched with the head of the foundation anchor bolt placed in the protective cover, so that the connection between the protective cover body and the foundation anchor bolt is more convenient, and no additional fixing parts are required.

The bottom of the second containing part is provided with an outer flange, and the outer flange is arranged in cooperation with the annular gasket, so that the bolt guard can prevent external rain or moisture from corroding the foundation anchor bolts, nuts and flat washers, and the bolt guard The utility model has the advantages of simple structure, low cost and convenient use.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (9)

1. a bolt shield, is characterized in that, comprising:

Shield body (1), it is located at foundation anchor bolt (3) and goes up and have the receiving cavity holding described foundation anchor bolt (3), and the bottom of described shield body (1) has flanging (121);

Sealing gasket (2), it is pressed on the end face of tower drum flange (6) by described flanging (121).

2. bolt shield according to claim 1, is characterized in that, the inwall of described shield body (1) has the thread section (111) matched with the screw thread in described foundation anchor bolt (3).

3. bolt shield according to claim 2, is characterized in that, described shield body (1) comprises the first receiver portion (11) and the second receiver portion (12);

Described first receiver portion (11) holds the head of described foundation anchor bolt (3), and the inwall that described thread section (111) is arranged on described first receiver portion (11) matches with the screw thread of described foundation anchor bolt (3) head;

Described second receiver portion (12) is arranged on the below of described first receiver portion (11), described second receiver portion (12) is greater than the tubular in the cross section of the nut (4) coordinated with described foundation anchor bolt (3) for cross section, described flanging (121) is arranged on the bottom of described second receiver portion (12).

4. bolt shield according to claim 3, is characterized in that, described first receiver portion (11), described second receiver portion (12) and described flanging (121) one-body molded go out described bolt shield.

5. bolt shield according to claim 3, it is characterized in that, the cross section of described second receiver portion (12), described flanging (121) and described sealing gasket (2) are ring, and the outer circumferential face of described flanging (121) radially protrudes from the outer circumferential face of described sealing gasket (2).

6. bolt shield according to any one of claim 1 to 5, it is characterized in that, described foundation anchor bolt (3) is set with plain cushion (5), the internal diameter of described sealing gasket (2) is greater than the external diameter of described plain cushion (5).

7. bolt shield according to claim 1, is characterized in that, the material of described sealing gasket (2) is the material with elastic performance.

8. bolt shield according to claim 1, is characterized in that, the material of described shield body (1) is plastics.

9. a wind power generating set, comprises tower cylinder, foundation anchor bolt (3) and bolt shield, it is characterized in that, the bolt shield of described bolt shield according to any one of claim 1 to 8.