CN215214310U

CN215214310U - Round nut for offshore wind power

Info

Publication number: CN215214310U
Application number: CN202121080085.0U
Authority: CN
Inventors: 陶李成; 祝其高; 李晨晖
Original assignee: Shanghai Shenguang High Strength Bolts Co ltd
Current assignee: Shanghai Shenguang High Strength Bolts Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-12-17
Anticipated expiration: 2031-05-19

Abstract

The utility model provides a round nut for offshore wind power, a terminal surface for offshore wind power's round nut is opened there are six terminal surface holes, six the terminal surface hole is followed be used for the center pin evenly distributed of offshore wind power's round nut, it has six circumference holes, six to open on the outer peripheral face for offshore wind power's round nut the circumference hole is located and is on a parallel with follow on the same cross-section of the terminal surface for offshore wind power's round nut the center pin evenly distributed of offshore wind power's round nut. The end face hole of the end face of the round nut and the circumferential hole on the outer circumferential face are utilized, so that a mounting tool can be conveniently inserted into the hole, and the round nut is screwed down.

Description

Round nut for offshore wind power

Technical Field

The utility model relates to a round nut for offshore wind power.

Background

Along with the large-scale development of the wind power industry in recent years, for high-strength fasteners, a host factory pays more and more attention to the rapidness and convenience in installation of the round nuts in large specifications and in narrow spaces, and the requirement for rapidly installing the round nuts in large specifications is urgent. Taking the M110 nut as an example, it is used both to fix the nacelle external platform and the nacelle, and to mount a large rotating lifting ring for nacelle hoisting. In the past, when the large-size round nut is installed, a hydraulic wrench needs to be used for screwing and applying a certain pretightening force to complete installation. However, for the M110 round nut, no matched hydraulic wrench is available in the market at present, and how to quickly install the nut becomes a difficult problem.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a round nut for offshore wind power that can solve above-mentioned problem in order to overcome the defect that is used for the round nut installation difficulty of wind-powered electricity generation among the prior art.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

the utility model provides a round nut for offshore wind power, its characterized in that, a terminal surface of round nut for offshore wind power is opened there are six terminal surface holes, six the terminal surface hole winds the center pin evenly distributed of round nut for offshore wind power, it has six circumference holes, six to open on the outer peripheral face of round nut for offshore wind power circumference hole is located and is on a parallel with duplex winding on the same cross-section of the terminal surface of round nut for offshore wind power the center pin evenly distributed of round nut for offshore wind power.

Preferably, six of the end face holes are located at the middle position of the round nut for offshore wind power along the radial direction.

Preferably, the projection of each circumferential hole on the end face is located at an intermediate position between two end face holes.

Preferably, the hardness of the round nut for offshore wind power is HRC 23-30.

Preferably, the verticality of the end face hole to the end face of the round nut for offshore wind power is less than or equal to 0.6 mm.

Preferably, the perpendicularity of the circumferential hole to the outer circumferential surface of the round nut for offshore wind power is less than or equal to 0.6 mm.

On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in: the end face hole of the end face of the round nut and the circumferential hole on the outer circumferential face are utilized, so that a mounting tool can be conveniently inserted into the hole, and the round nut is screwed down.

Drawings

Fig. 1 is a partial sectional view of a round nut for offshore wind power according to a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the round nut for offshore wind power in the preferred embodiment of the present invention.

Description of reference numerals:

end face hole 100

Circumferential hole 200

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

In order to meet the requirement of installing the nut in some narrow spaces of offshore wind power, the round nut with the relatively smaller outer diameter can often play a greater role. However, the round nut is not easy to tighten with a wrench or the like, as compared with the hexagonal nut, and thus it is a problem how to quickly install and tighten the round nut. To solve this problem, fig. 1 and 2 show a round nut for offshore wind power, the end surface of which is opened with six end surface holes 100, the six end surface holes 100 being uniformly distributed around the central axis of the round nut for offshore wind power, the outer circumferential surface of which is opened with six circumferential holes 200, the six circumferential holes 200 being located on the same cross section parallel to the end surface of the round nut for offshore wind power and being uniformly distributed around the central axis of the round nut for offshore wind power.

In the embodiment, the M110 round nut is taken as an example, and when the round nut is machined, an advanced numerical control turning and milling composite machining process is adopted to directly machine and form a workpiece. A plurality of special cutters are arranged on the numerical control machining center, and the cutter changing time is reduced by utilizing novel cutter arrangement. After directly turn-milling M110 round nut blank surface and hole, bore phi 12's terminal surface hole 100 and circumference hole 200 at terminal surface and outer peripheral face, guarantee terminal surface hole 100 and circumference hole 200 to the symmetry of center pin, guarantee terminal surface hole 100 to the straightness that hangs down of terminal surface, guarantee circumference hole 200 to the straightness that hangs down of outer peripheral face and to the distance of terminal surface, guarantee two terminal surfaces to the straightness that hangs down of hole, turn the internal thread finally. The end surface hole 100 and the circumferential hole 200 thus produced have a satisfactory positioning accuracy and a satisfactory surface quality of the round nut. The product manufacturing process chain is shortened, the production efficiency is improved, and the product quality is ensured. Typically, the face holes 100 are used for initial tightening of round nuts, while the circumferential holes 200 are used for tightening round nuts. The end face hole of the end face of the round nut and the circumferential hole in the outer circumferential face are utilized, so that the round nut can be screwed down in the insertion hole by using an installation tool conveniently.

In order to ensure the structural strength of the round nut and prevent the end surface holes 100 or the circumferential holes 200 from being damaged when the nut is tightened, six end surface holes 100 are radially positioned in the middle of the round nut for offshore wind power, and the projection of each circumferential hole 200 on the end surface is positioned in the middle between two end surface holes 100.

In the scheme, the performance grade of the nut is 8 grades, and the nut meets GB/T3098.2-2000. Wherein: the hardness is HRC23-30, and the bearing load is guaranteed to reach 5000 kN.

In order to prevent the round nut from being damaged by tools and the round nut due to uneven stress when the round nut is screwed, the perpendicularity of the end surface hole 100 to the end surface of the round nut for offshore wind power is less than or equal to 0.6mm, and the perpendicularity of the circumferential hole 200 to the outer circumferential surface of the round nut for offshore wind power is less than or equal to 0.6 mm.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The utility model provides a round nut for offshore wind power, its characterized in that, a terminal surface of round nut for offshore wind power is opened there are six terminal surface holes, six the terminal surface hole winds the center pin evenly distributed of round nut for offshore wind power, it has six circumference holes, six to open on the outer peripheral face of round nut for offshore wind power circumference hole position in a parallel with duplex winding on the same cross-section of the terminal surface of round nut for offshore wind power the center pin evenly distributed of round nut for offshore wind power.

2. The round nut for offshore wind power as claimed in claim 1, wherein six of the face holes are located at a middle position of the round nut for offshore wind power in a radial direction.

3. Round nut for offshore wind energy as claimed in claim 1, characterized in that the projection of each of said circumferential holes on the end surface is located in an intermediate position between two of said end surface holes.

4. The round nut for offshore wind power as claimed in claim 1, wherein the hardness of the round nut for offshore wind power is HRC 23-30.

5. The round nut for offshore wind power as claimed in claim 1, wherein the perpendicularity of the end surface hole to the end surface of the round nut for offshore wind power is less than or equal to 0.6 mm.

6. The round nut for offshore wind power as claimed in claim 1, wherein the perpendicularity of the circumferential hole to the outer circumferential surface of the round nut for offshore wind power is less than or equal to 0.6 mm.