Anti-loosening identification device for bolts for wind turbine generator installation

Abstract

The utility model provides an anti-loosening identification device of a bolt for installing a wind turbine generator, which judges whether the bolt is loosened or not by observing the position change of a convex structure, and is quick and reliable in anti-loosening identification. The bolt anti-loose identification device is used for anti-loose identification of bolts annularly distributed on a flange and comprises an annular sleeve, an annular tooth groove and a bolt anti-loose identification device, and annular tooth grooves are distributed in the inner annular wall of the annular sleeve; at least a semi-elliptical projection; at least one side of the annular sleeve is provided with a semi-elliptical protrusion, the short axis corresponding to the semi-elliptical protrusion is the outer diameter length of the annular sleeve, and the long axis length of the semi-elliptical protrusion is the center distance between two adjacent sets of bolts. The protruding distance of each set of semi-oval protrusions relative to the circle center of the annular sleeve is half of the distance between the centers of every two adjacent sets of bolts, and the equivalent diameter of the inner wall of the annular sleeve is the equivalent outer diameter of a nut tightly arranged on the bolts in a sleeving mode. The annular sleeve is arranged on the periphery of the equivalent outer diameter of the nut in a sleeving mode, and the corresponding tooth grooves of the annular tooth grooves are meshed with the corresponding angulation areas of the nut.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bolt assembly, specifically is a bolt's anti-loose identification device for wind turbine installation. BACKGROUND

[0002] When the wind turbine is assembled, it needs to be connected and assembled by a plurality of flanges through high-strength bolts. After the common flange is fastened in place by the bolt, in order to ensure that the fastening state is effective for a long time, it is necessary to determine whether the bolt is loose during use through anti-loose identification, so as to be able to timely perform re-tightening operation, and ensure that the wind turbine runs stably and reliably for a long time. The anti-loose identification of the prior art is performed by setting an anti-loose line such as Figure 1 Once the position of the anti-loose line on the same vertical plane of the bolt, nut and flange surface changes, only the loosening of the bolt can be determined. However, in actual use, due to differences in geographical conditions, the anti-loose line will be affected by factors such as fog and temperature, and the color of the anti-loose line will gradually fade, and sometimes the anti-loose line cannot be seen. Therefore, how to perform reliable anti-loose identification is a technical problem that needs to be solved urgently. SUMMARY

[0003] In view of the above problems, the utility model provides a bolt's anti-loose identification device for wind turbine installation, which judges whether the bolt is loose by observing the position change of the outward convex structure, and the anti-loose identification is fast and reliable.

[0004] A bolt's anti-loose identification device for wind turbine installation is used for anti-loose identification of the bolt on the flange upper ring cloth, and is characterized in that it comprises:

[0005] An annular sleeve, wherein an annular tooth groove is arranged on the inner wall of the annular sleeve;

[0006] At least one half-elliptical protrusion;

[0007] At least one side of the annular sleeve is provided with the half-elliptical protrusion, the short axis corresponding to the half-elliptical protrusion is the outer diameter length of the annular sleeve, the long axis length of the half-elliptical protrusion is the center distance between adjacent two groups of bolts, the protruding distance of each group of half-elliptical protrusions relative to the center of the annular sleeve is half the distance between the center distances of adjacent two groups of bolts, the equivalent diameter of the inner wall of the annular sleeve is the equivalent outer diameter of the nut fastened on the bolt, and the annular sleeve is sleeved on the equivalent outer diameter of the nut and the corresponding tooth groove of the annular tooth groove engages the corresponding angular area of the nut;

[0008] Every two adjacent bolts become a pair of mutual reference bolts, and the end of the long axis of the half-elliptical protrusion corresponding to each pair of mutual reference bolts is tightly arranged to form a tangent point after assembly.

[0009] Further characterized in that:

[0010] When the number of bolts arranged on the flange is even 2N, all the annular sleeves are provided with only one side of the semi-elliptic protrusions, the corresponding bolts on the flange form N pairs of mutual reference bolts, and the ends of the long axes of the semi-elliptic protrusions corresponding to the N pairs of mutual reference bolts are closely arranged to form tangent points;

[0011] When the number of bolts arranged on the flange is odd 2N+1, the corresponding bolts on the flange form N pairs of mutual reference bolts, and the other single bolt and the adjacent one side of the mark bolt form mutual reference bolts, at this time, the two sides of the annular sleeve corresponding to the mark bolt are provided with semi-elliptic protrusions, and the whole anti-loose identification device is an elliptical structure with the center being the annular sleeve, and the ends of the long axes of the semi-elliptic protrusions corresponding to the N+1 pairs of mutual reference bolts are closely arranged to form tangent points;

[0012] The teeth slot in the annular teeth slot is a small screw thread and a fine tooth slot, which ensures that the annular sleeve is fixed to any position of the nut and ensures that the ends of the long axes of the semi-elliptic protrusions corresponding to each pair of mutual reference bolts are closely arranged to form tangent points after being fixed in place.

[0013] Preferably, the ends of the long axes of the semi-elliptic protrusions are provided with engagement teeth, and the ends of the long axes of the semi-elliptic protrusions corresponding to each pair of mutual reference bolts are engaged with each other through the engagement teeth, which further ensures that there is a certain engagement force between the mutual bolts, and reduces the probability of bolt loosening.

[0014] After the utility model is adopted, the annular sleeve is sleeved on the nut for fastening the bolt, the annular teeth slot of the annular sleeve is used for fixing to the outer periphery of the nut, every two adjacent bolts become a pair of mutual reference bolts, the ends of the long axes of the semi-elliptic protrusions corresponding to each pair of mutual reference bolts are closely arranged to form tangent points after assembly, when the bolt loosens, the tangent point is disconnected, so that the maintenance personnel easily find that the bolt loosens, and the bolt loosening is judged by observing the position change of the outer convex structure, and the anti-loose identification is quick and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view corresponding to the anti-loose identification of the prior art;

[0016] Figure 2 It is a top view of a specific embodiment one of the anti-loose identification device of the utility model;

[0017] Figure 3 It is a top view of a specific embodiment two of the anti-loose identification device of the utility model;

[0018] Figure 4 It is Figure 2 A local enlarged schematic view of the A place;

[0019] Figure 5 The utility model is applied to the assembly plan view of a pair of mutual reference bolts;

[0020] Figure 6 Figure 5 The local method schematic view of B of the utility model is shown in the figure;

[0021] The names corresponding to the serial numbers in the figure are as follows:

[0022] Annular sleeve 10, annular tooth groove 11, small screw fine tooth 111, semi-elliptical protrusion 20, occlusal tooth 21, nut 30. DETAILED DESCRIPTION

[0023] A bolt anti-loosening identification device for wind turbine installation is provided, which is used for identifying the bolt anti-loosening of the ring bolt on the flange, and comprises an annular sleeve 10 and at least one semi-elliptical protrusion 20. Figures 2-6

[0024] The inner ring wall of the annular sleeve 10 is arranged with an annular tooth groove 11.

[0025] At least one side of the annular sleeve 10 is provided with a semi-elliptical protrusion 20, the short axis of the semi-elliptical protrusion 20 is the outer diameter length of the annular sleeve 10, the long axis length of the semi-elliptical protrusion 20 is the center distance between adjacent two groups of bolts, the protrusion distance of each group of semi-elliptical protrusions 20 relative to the center of the annular sleeve 10 is half the center distance between adjacent two groups of bolts, and the equivalent diameter of the inner wall of the annular sleeve 10 is the equivalent outer diameter of the nut 30 tightly sleeved on the bolt, and the corresponding tooth groove of the annular tooth groove 11 is engaged with the corresponding angular area of the nut 30.

[0026] Each two adjacent bolts become a pair of mutual reference bolts, and the end of the long axis of the semi-elliptical protrusion 20 corresponding to each pair of mutual reference bolts is closely arranged to form a tangent point after assembly.

[0027] Specific embodiment one, see Figure 2 , Figure 4 The annular sleeve 10 is provided with only one side of the semi-elliptical protrusion 20.

[0028] Specific embodiment two, see Figure 3 , Figure 4 Both sides of the annular sleeve 10 are provided with semi-elliptical protrusions 20, and the entire bolt anti-loosening identification device is an elliptical structure, and the center thereof is located in the annular sleeve 10.

[0029] When the number of the ring bolt on the flange is an even number 2N, all the annular sleeves 10 are provided with only one side of the semi-elliptical protrusion 20, the corresponding bolts on the flange form N pairs of mutual reference bolts, and the end of the long axis of the semi-elliptical protrusion 20 corresponding to the N pairs of mutual reference bolts is closely arranged to form a tangent point.​

[0030] When the number of bolts on the flange is an odd number 2N+1, the corresponding bolts on the flange constitute N pairs of mutually referenced bolts, and another single bolt and the marked bolt adjacent to one side thereof constitute mutually referenced bolts, at this time, the two sides of the annular sleeve 10 corresponding to the marked bolt are provided with half-elliptical protrusions 20, and the end of the long axis of the half-elliptical protrusion 20 corresponding to the N+1 pairs of mutually referenced bolts is closely arranged to form a tangent point.

[0031] In specific implementation, the tooth groove in the annular tooth groove 11 is a tooth groove formed by small screw thread fine teeth 111, which ensures that the annular sleeve is fixedly sleeved at any position of the hexagonal nut 30, and ensures that after being fixedly sleeved, the end of the long axis of the half-elliptical protrusion 20 corresponding to each pair of mutually referenced bolts is closely arranged to form a tangent point.

[0032] In specific implementation, the end position of the long axis of the half-elliptical protrusion 20 is provided with a meshing tooth 21, and the end of the long axis of the half-elliptical protrusion 20 corresponding to each pair of mutually referenced bolts is meshed with each other through the meshing tooth 21, which further ensures that there is a certain meshing force between the mutual bolts, and reduces the probability of bolt loosening.

[0033] In specific implementation, the annular sleeve 10 and the half-elliptical protrusion 20 are integrally formed.

[0034] The working principle is as follows: the annular sleeve 10 is sleeved on the nut 30 for fastening the bolt, the annular tooth groove 11 of the annular sleeve 10 is used for fixedly sleeving the outer periphery of the nut 30, and every two adjacent bolts become a pair of mutually referenced bolts, and after assembly, the end of the long axis of the half-elliptical protrusion 20 corresponding to each pair of mutually referenced bolts is closely arranged to form a tangent point, when the bolt loosens, the tangent point is disconnected, so that the maintenance personnel easily find that the bolt loosens; it is judged whether the bolt is loosened by observing the position change of the outer protruding structure, which is fast and reliable in loose identification.

[0035] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0036] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A device for identifying the loosening of bolts used in wind turbine installation, used for identifying the loosening of bolts on flange rings, characterized in that, It includes: A ring-shaped sleeve, an inner ring wall of which is arranged with ring-shaped tooth grooves; At least one half-elliptical protrusion; At least one side of the ring-shaped sleeve is provided with the half-elliptical protrusion, the short axis of the half-elliptical protrusion is the outer diameter length of the ring-shaped sleeve, the long axis length of the half-elliptical protrusion is the center distance between two adjacent groups of bolts, the protruding distance of each group of the half-elliptical protrusion relative to the center of the ring-shaped sleeve is half the distance between the center distance of the two adjacent groups of bolts, the equivalent diameter of the inner wall of the ring-shaped sleeve is the equivalent outer diameter of the nut fastened on the bolt, the ring-shaped sleeve is sleeved on the equivalent outer diameter of the nut, and the corresponding tooth groove of the ring-shaped tooth groove engages the corresponding angular area of the nut; Every two adjacent bolts become a pair of mutually referenced bolts, and the end of the long axis of the half-elliptical protrusion corresponding to each pair of mutually referenced bolts is closely arranged to form a tangent point.

2. A wind turbine installation bolt anti-loosening identification device according to claim 1, characterized in that: When the number of bolts arranged on the flange is even 2N, all the ring-shaped sleeves are provided with only one side of the half-elliptical protrusion, the corresponding bolts on the flange form N pairs of mutually referenced bolts, and the end of the long axis of the half-elliptical protrusion corresponding to the N pairs of mutually referenced bolts is closely arranged to form a tangent point.

3. A wind turbine installation bolt anti-loosening identification device according to claim 1, characterized in that: When the number of bolts arranged on the flange is odd 2N+1, the corresponding bolts on the flange form N pairs of mutually referenced bolts, and another single bolt and its adjacent side marker bolt form mutually referenced bolts, at this time, the two sides of the ring-shaped sleeve corresponding to the marker bolt are provided with half-elliptical protrusions, the entire anti-loose identification device is an elliptical structure with the center located in the ring-shaped sleeve, and the end of the long axis of the half-elliptical protrusion corresponding to the N+1 pairs of mutually referenced bolts is closely arranged to form a tangent point.

4. A wind turbine installation bolt anti-loosening identification device according to claim 1, characterized in that: The tooth groove in the ring-shaped tooth groove is a tooth groove composed of small screw threads and fine teeth.

5. A wind turbine installation bolt anti-loosening identification device according to claim 1, characterized in that: The end position of the long axis of the half-elliptical protrusion is provided with an engagement tooth, and the end of the long axis of the half-elliptical protrusion corresponding to each pair of mutually referenced bolts is engaged with each other through the engagement tooth.

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