CN213870666U

CN213870666U - High-strength bolt for wind power

Info

Publication number: CN213870666U
Application number: CN202022911150.1U
Authority: CN
Inventors: 曹雄; 王明晶; 柯胜康
Original assignee: Changzhou Shijin Precision Machinery Co ltd
Current assignee: Changzhou Shijin Precision Machinery Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-03
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses a high strength bolt for wind-powered electricity generation, including the bolt body, the bolt body includes the basic unit, the fixed surface of basic unit is connected with the high strength layer, the high strength layer includes maraging steel layer, alloy quenching and tempering steel layer and low alloy structure steel layer, the surface coating on high strength layer has anticorrosive wearing layer. The utility model discloses a bolt body, the high strength layer, the maraging steel layer, alloy quenching and tempering steel layer, low alloy structure steel layer, under the effect of mutually supporting between anticorrosive wearing layer and alumina ceramic coating and the tungsten carbide metal coating, the effectual intensity that improves the bolt body, anticorrosion and wear resistance, very big user demand who has satisfied people, the intensity and the anticorrosion effect of having solved current bolt for wind-powered electricity generation engineering are relatively poor, easily take place to fracture and receive external corrosive substance to corrode in the use, the problem of people user demand has not been satisfied.

Description

High-strength bolt for wind power

Technical Field

The utility model relates to a bolt technical field specifically is a high strength bolt for wind-powered electricity generation.

Background

Bolt: mechanical parts, the cylindrical threaded fastener of adapted nut, a class of fastener of compriseing head and screw rod (the cylinder that has the external screw thread) two parts, need with the nut cooperation, a part for two have the through-hole of fastening connection, bolted connection is called to this kind of connection form, if screw nut from the bolt, can make these two parts separately again, so bolted connection belongs to and can dismantle the connection, however the intensity and the anticorrosion effect of current bolt for wind-powered electricity generation engineering are relatively poor, easily take place the fracture in the use and receive external corrosive substance to corrode, people's user demand can not be satisfied.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high strength bolt for wind-powered electricity generation possesses intensity height, the effectual advantage of anticorrosion, and the intensity of having solved current bolt for wind-powered electricity generation engineering is relatively poor with the anticorrosion effect, easily breaks off and receives external corrosive substance to corrode in the use, can not satisfy people's user demand's problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high strength bolt for wind-powered electricity generation, includes the bolt body, the bolt body includes the basic unit, the surface fixedly connected with high strength layer of basic unit, the high strength layer includes maraging steel layer, alloy quenching and tempering steel layer and low alloy structure steel layer, the surface coating on high strength layer has anticorrosive wearing layer, anticorrosive wearing layer includes alumina ceramic coating and tungsten carbide metal coating.

Preferably, the outer surface of the bolt body is sleeved with a gasket, and the thickness of the gasket is five millimeters to seven millimeters.

Preferably, the inner surface of the tungsten carbide metal coating is coated on the outer surface of the high-strength layer, and the inner surface of the alumina ceramic coating is coated on the outer surface of the tungsten carbide metal coating.

Preferably, the inner surface of the low alloy structural steel layer is fixedly connected to the outer surface of the base layer, and the inner surface of the alloy quenched and tempered steel layer is fixedly connected to the outer surface of the low alloy structural steel layer.

Preferably, the inner surface of the maraging steel layer is fixedly connected to the outer surface of the alloy quenched and tempered steel layer, and the thickness of the alloy quenched and tempered steel layer is one half of that of the maraging steel layer.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a setting on high strength layer in the bolt body, because the maraging steel layer in the high strength layer, alloy quenching and tempering steel layer and low alloy structure steel layer all possess splendid intensity, and then multi-level intensity protection has been formed in the inside of bolt body, the effectual bolt body that has avoided receives the fracture in the use, simultaneously through the setting of alumina ceramic coating and tungsten carbide metal coating in the anticorrosive wearing layer, because alumina ceramic coating and tungsten carbide metal coating all possess splendid anticorrosion and wear resistance, and then formed bilayer times anticorrosion and wear-resisting protection on the surface of bolt body, when avoiding the bolt body to receive wearing and tearing, can carry out effectual isolated to external corrosive substance, very big improvement the anticorrosion and the wear resistance of bolt body, under whole complex effect, the effectual intensity that has improved the bolt body, Anticorrosion and wear resistance, very big satisfied people's user demand, it is relatively poor to have solved the intensity and the anticorrosion effect of current bolt for wind-powered electricity generation engineering, easily breaks off and receives external corrosive substance to corrode in the use, can not satisfy people's user demand's problem.

2. The utility model discloses a setting of gasket, the effectual firmness that connects when having increased the bolt body and using.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the top view structure of the bolt body of the present invention;

fig. 3 is a schematic top view of the high-strength layer of the present invention;

fig. 4 is a schematic view of the top view structure of the anti-corrosion wear-resistant layer of the present invention.

In the figure: 1. a bolt body; 11. an anti-corrosion wear-resistant layer; 111. an alumina ceramic coating; 112. a tungsten carbide metal coating; 12. a high-strength layer; 121. a maraging steel layer; 122. an alloy quenched and tempered steel layer; 123. a low alloy structural steel layer; 13. a base layer; 2. and (7) a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description herein, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings to facilitate the description of the patent and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the patent. In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-4, a high-strength bolt for wind power comprises a bolt body 1, a gasket 2 is sleeved on the outer surface of the bolt body 1, the connection firmness of the bolt body 1 in use is effectively increased by the arrangement of the gasket 2, the thickness of the gasket 2 is one-fifth-one-seventh-millimeter, the bolt body 1 comprises a base layer 13, a high-strength layer 12 is fixedly connected to the outer surface of the base layer 13, the high-strength layer 12 comprises a maraging steel layer 121, an alloy quenched and tempered steel layer 122 and a low-alloy structural steel layer 123, the inner surface of the low-alloy structural steel layer 123 is fixedly connected to the outer surface of the base layer 13, the inner surface of the alloy quenched and tempered steel layer 122 is fixedly connected to the outer surface of the low-alloy structural steel layer 123, the inner surface of the maraging steel layer 121 is fixedly connected to the outer surface of the alloy quenched and tempered steel layer 122, and the thickness of the alloy quenched and tempered steel layer 122 is one-half of the thickness of the maraging steel layer 121, the outer surface of the high-strength layer 12 is coated with the anti-corrosion wear-resistant layer 11, the anti-corrosion wear-resistant layer 11 comprises an aluminum oxide ceramic coating 111 and a tungsten carbide metal coating 112, the inner surface of the tungsten carbide metal coating 112 is coated on the outer surface of the high-strength layer 12, the inner surface of the aluminum oxide ceramic coating 111 is coated on the outer surface of the tungsten carbide metal coating 112, through the arrangement of the high-strength layer 12 in the bolt body 1, because the maraging steel layer 121, the alloy quenched and tempered steel layer 122 and the low-alloy structural steel layer 123 in the high-strength layer 12 all have excellent strength, further multi-level strength protection is formed in the bolt body 1, the bolt body 1 is effectively prevented from being broken in the using process, meanwhile, through the arrangement of the aluminum oxide ceramic coating 111 and the tungsten carbide metal coating 112 in the anti-corrosion wear-resistant layer 11, because the aluminum oxide ceramic coating 111 and the tungsten carbide metal coating 112 both have excellent anti-corrosion and wear-resistance, and then has formed double-deck anticorrosion and wear-resisting protection on the surface of bolt body 1, when avoiding bolt body 1 to receive wearing and tearing, can carry out effectual isolated to external corrosive substance, very big improvement bolt body 1's anticorrosion and wear resistance, under whole complex effect, the effectual intensity that improves bolt body 1, anticorrosion and wear resistance, very big user demand who has satisfied people, the intensity and the anticorrosion effect of having solved current bolt for wind-powered electricity generation engineering are relatively poor, easily take place the fracture in the use and receive external corrosive substance to corrode, the problem of people's user demand can not be satisfied.

The utility model provides an all parts are the parts that general standard spare or technical staff in the field know, its structure and principle all are this technical staff all can learn through the technical manual or learn through conventional experimental method, the standard part that uses in this application file all can purchase from the market simultaneously, each part can all be customized according to the record of description and attached drawing in this application file, the concrete joining mode of each part all adopts conventional means such as ripe bolt in the prior art, rivets, welding, machinery, part and equipment all adopt conventional model in the prior art, no longer make specific statement here.

The standard parts used in this document are commercially available, all the components in this document are customized according to the description of the specification and the drawings, and the connection relationship and specific structure between the layers in this document are all performed by the prior art, such as by mechanical methods, by adhesives, by various welding methods (such as thermal welding, ultrasonic welding, flux, welding, and fusion welding), and no specific description is made here.

When in use, through the arrangement of the high-strength layer 12 in the bolt body 1, because the maraging steel layer 121, the alloy quenched and tempered steel layer 122 and the low-alloy structural steel layer 123 in the high-strength layer 12 all have excellent strength, and multi-level strength protection is formed inside the bolt body 1, the bolt body 1 is effectively prevented from being fractured in the use process, meanwhile, through the arrangement of the alumina ceramic coating 111 and the tungsten carbide metal coating 112 in the corrosion and wear resistant layer 11, because the alumina ceramic coating 111 and the tungsten carbide metal coating 112 both have excellent corrosion resistance and wear resistance, and further double-level corrosion resistance and wear resistance protection is formed on the surface of the bolt body 1, the bolt body 1 is prevented from being worn, and meanwhile, external corrosive substances can be effectively isolated, the corrosion resistance and wear resistance of the bolt body 1 are greatly improved, under the action of integral matching, the strength, the corrosion resistance and the wear resistance of the bolt body 1 are effectively improved, and the use requirements of people are greatly met.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high strength bolt for wind-powered electricity generation, includes bolt body (1), its characterized in that: bolt body (1) includes basic unit (13), the surface fixedly connected with high strength layer (12) of basic unit (13), high strength layer (12) are including maraging steel layer (121), alloy quenching and tempering steel layer (122) and low alloy structure steel layer (123), the surface coating of high strength layer (12) has anticorrosive wearing layer (11), anticorrosive wearing layer (11) are including aluminium oxide ceramic coating (111) and tungsten carbide metal coating (112).

2. The high-strength bolt for wind power as claimed in claim 1, wherein: the outer surface cover of bolt body (1) is equipped with gasket (2), the thickness of gasket (2) is one point five millimeters to one point seven millimeters.

3. The high-strength bolt for wind power as claimed in claim 1, wherein: the inner surface of the tungsten carbide metal coating (112) is coated on the outer surface of the high-strength layer (12), and the inner surface of the aluminum oxide ceramic coating (111) is coated on the outer surface of the tungsten carbide metal coating (112).

4. The high-strength bolt for wind power as claimed in claim 1, wherein: the inner surface of the low-alloy structural steel layer (123) is fixedly connected to the outer surface of the base layer (13), and the inner surface of the alloy quenched and tempered steel layer (122) is fixedly connected to the outer surface of the low-alloy structural steel layer (123).

5. The high-strength bolt for wind power as claimed in claim 1, wherein: the inner surface of the maraging steel layer (121) is fixedly connected to the outer surface of the alloy quenched and tempered steel layer (122), and the thickness of the alloy quenched and tempered steel layer (122) is one half of that of the maraging steel layer (121).