CN218117969U

CN218117969U - Pitch bearing bolt connecting device of wind generating set

Info

Publication number: CN218117969U
Application number: CN202221536470.6U
Authority: CN
Inventors: 刘海斌; 于满源; 陈星�
Original assignee: Huaneng Jiuquan Wind Power Co Ltd
Current assignee: Huaneng Jiuquan Wind Power Co Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-12-23
Anticipated expiration: 2032-06-17

Abstract

The utility model belongs to the technical field of wind power generation technique and specifically relates to a wind generating set becomes oar bearing bolted connection device is provided, two support frames including apron and apron both sides, the middle part of apron is equipped with the quilt and is surveyed the bolt, the outside of being surveyed the bolt is connected with the nut, the lower fixed surface of nut installs stop gear, the support frame of apron one side is connected with the threaded rod, the threaded rod is close to the one end fixedly connected with operation hand wheel of support frame, and the other end of threaded rod rotates and is connected with stop device, stop device's one side and stop gear block, the outside all around of apron all is equipped with the securing device who is connected with the support frame top. The bolt connection device for the variable pitch bearing solves the problems that the firmness of a bolt to be tested is poor, the phenomenon of wire withdrawing is easy to occur and the safety is poor in the use process of the bolt connection device for the variable pitch bearing.

Description

Pitch bearing bolt connecting device of wind generating set

Technical Field

The utility model relates to a wind power generation technical field particularly, relates to a wind generating set becomes oar bearing bolted connection device.

Background

The variable-pitch bearing bolt is used as an important connecting part on the wind driven generator, and due to the influence of external impact, vibration, high temperature and the like, the bolt connecting part can have the problems of loosening, separation, fracture, even falling and the like, so that the safety and the service performance of the wind driven generator are influenced, and even the variable-pitch bearing is damaged to cause disastrous results. Especially for some wind driven generators working in severe environments, the safety degree and fatigue damage of the wind driven generators are often difficult to directly judge, or the tightness of bolts is often neglected. In order to avoid accidents caused by failure of the variable-pitch bearing bolt, the on-line state monitoring of the variable-pitch bearing bolt is needed, and the functions of reducing the accident rate and preventing major accidents can be achieved.

The utility model discloses a utility model patent that publication number is CN215486390U discloses an on-line monitoring aerogenerator becomes oar bearing bolt device, specifically be magnetic force sensor installs outside sleeve side, the location sleeve cover is in outside sleeve, lean on the hexagon nut side location of bolt, outside sleeve adopts threaded connection with the base, the base glues on the bolted connection' S that corresponds bearing surface, the permanent magnetism piece adsorbs in the nut top of bolt, it is relative with magnetic force sensor with the S utmost point of permanent magnetism piece, signal processor includes wired or wireless signal transmission function module. Although the utility model discloses a realization becomes oar bearing bolt's on-line monitoring to aerogenerator, when the bolt takes place not hard up or when faults such as fracture, in time discover trouble bolt to send out the warning, reduce the risk that aerogenerator took place major failure. However, the firmness of the tested bolt is poor, the phenomenon of wire withdrawing is easy to occur, and the safety is poor, so that the bolt connecting device for the variable pitch bearing of the wind generating set is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind generating set becomes oar bearing bolted connection device for the fastness of being surveyed the bolt is poor in solving the background art, appears moving back the relatively poor problem of silk phenomenon and security easily.

The embodiment of the utility model provides a wind generating set becomes oar bearing bolted connection device, including two support frames of apron and apron both sides, the middle part of apron is equipped with the quilt survey bolt, the outside of being surveyed the bolt is connected with the nut, the lower fixed surface of nut installs stop gear, the support frame of apron one side is connected with the threaded rod, the threaded rod is close to the one end fixedly connected with operation hand wheel of support frame, and the other end of threaded rod rotates and is connected with stop device, one side and the stop gear block of stop device, the outside all around of apron all is equipped with the securing device who is connected with the support frame top.

Further, stop device includes the stopper, one side of stopper is equipped with the fixture block, fixture block and limit gear swing joint.

Furthermore, the tooth clearance of the limiting gear is 0.15mm, and the size and the shape of the fixture block are matched with those of the limiting gear.

Furthermore, the stabilizing device comprises a rectangular block, and a return spring is arranged on the outer side of the rectangular block.

Furthermore, one end of the return spring is fixedly connected with a pin fixing piece penetrating through the rectangular block, and the pin fixing piece is inserted in the cover plate.

Further, the pin fixing piece is of a T-shaped structure.

Furthermore, a bolt head is arranged at the top of the tested bolt, and a permanent magnet sheet is fixedly mounted on the outer side of the bolt head.

Furthermore, the outside threaded connection of threaded rod has the fixed block, fixed connection between fixed block and the apron.

Furthermore, all be equipped with fixing bolt around the top of apron, fixing bolt and support frame fixed connection.

The beneficial effects of the utility model include:

1. the utility model discloses install limit gear through the nut in the outside of being surveyed the bolt, through rotating the operation hand wheel, drive the threaded rod that is connected with it and rotate, realize controlling the fixture block card that is connected through the stopper and fix in the tooth clearance of limit gear to avoid the nut to move back the silk, improve the fastness of installing being surveyed the bolt, improve the security;

2. the utility model provides a be connected through fixing bolt between apron and carriage to utilize reset spring's elastic tension, realize that the one end of round pin firmware is inserted and is fixed in the inside of apron, thereby strengthen the fastness of being connected between apron and carriage, strengthen the stability of device structure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings according to these drawings without inventive efforts.

Fig. 1 is a schematic overall structural diagram of a connection device according to an embodiment of the present invention;

fig. 2 is a front view of a connection device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a limiting device according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the fixing device according to an embodiment of the present invention.

An icon: 1-cover plate, 2-support frame, 3-tested bolt, 4-nut, 5-limit gear, 6-threaded rod, 7-operating hand wheel, 8-limit device, 9-stabilizing device, 10-bolt head, 11-permanent magnet sheet, 12-fixed block, 13-fixed bolt, 81-limit block, 82-block, 91-rectangular block, 92-reset spring and 93-pin fastener.

Detailed Description

The technical solution in the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiment of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. It should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed in use of the products of the present invention, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Please refer to fig. 1 to 4, an embodiment of the present invention provides a pitch bearing bolt connection device for a wind generating set, including two support frames 2 of apron 1 and apron 1 both sides, the middle part of apron 1 is equipped with surveyed bolt 3, the top of apron 1 all is equipped with fixing bolt 13 all around, fixing bolt 13 and support frame 2 fixed connection, the outside of being surveyed bolt 3 is connected with nut 4, the top of being surveyed bolt 3 is equipped with bolt head 10, the outside fixed mounting of bolt head 10 has permanent magnet piece 11, the lower fixed surface of nut 4 installs limit gear 5, the support frame 2 of apron 1 one side is connected with threaded rod 6, threaded rod 6 is close to the one end fixedly connected with operation hand wheel 7 of support frame 2, and the other end rotation of threaded rod 6 is connected with stop device 8, the outside threaded connection of threaded rod 6 has fixed block 12, fixed connection between fixed block 12 and the apron 1, one side and the limit gear 5 block of stop device 8, the outside all is equipped with securing device 9 connected with support frame 2 top all around of apron 1.

In the structure, the permanent magnet pieces 11 are used in cooperation with a magnetic sensor to further judge whether the tested bolt 3 fails, through holes for the tested bolt 3 and fixing bolts 13 to pass through are reserved in the cover plate 1, the number of the fixing bolts 13 is four, and the four fixing bolts 13 are uniformly arranged at the corners around the upper surface of the cover plate 1 and are in threaded connection with the two support frames 2; one end of the operating hand wheel 7 is fixedly connected with the threaded rod 6, the other end of the operating hand wheel is provided with a handle, and the threaded rod 6 is further driven to rotate by rotating the handle.

Preferably, the limiting device 8 comprises a limiting block 81, a fixture block 82 is arranged on one side of the limiting block 81, the fixture block 82 is movably connected with the limiting gear 5, the tooth clearance of the limiting gear 5 is 0.15mm, and the size and the shape of the fixture block 82 are matched with the teeth of the limiting gear 5.

In the structure, firstly, the tested bolt 3 is installed on the cover plate 1, the operating hand wheel 7 is rotated to drive the threaded rod 6 to rotate, the tooth clearance of the clamping block 82 and the limiting gear 5 is further controlled to be clamped together, the installation firmness of the tested bolt 3 is enhanced, and the nut 4 is prevented from withdrawing threads.

Preferably, the fixing device 9 includes a rectangular block 91, a return spring 92 is disposed outside the rectangular block 91, one end of the return spring 92 is fixedly connected with a pin 93 penetrating through the rectangular block 91, the pin 93 is inserted into the cover plate 1, and the pin 93 is a T-shaped structure.

In the above structure, one end of the pin 93 is inserted into the cover plate 1, and the elastic tension of the return spring 92 is used to enhance the firmness between the cover plate 1 and the support frame 2.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a wind generating set becomes oar bearing bolted connection device, includes two support frames (2) of apron (1) and apron (1) both sides, its characterized in that, the middle part of apron (1) is equipped with surveyed bolt (3), the outside of being surveyed bolt (3) is connected with nut (4), the lower fixed surface of nut (4) installs stop gear (5), support frame (2) of apron (1) one side are connected with threaded rod (6), one end fixedly connected with operation hand wheel (7) that threaded rod (6) are close to support frame (2), and the other end of threaded rod (6) rotates and is connected with stop device (8), one side and stop gear (5) block of stop device (8), the outside all around of apron (1) all is equipped with securing device (9) of being connected with support frame (2) top.

2. The pitch bearing bolt connecting device according to claim 1, wherein the limiting device (8) comprises a limiting block (81), a clamping block (82) is arranged on one side of the limiting block (81), and the clamping block (82) is movably connected with the limiting gear (5).

3. The pitch bearing bolt connecting device according to claim 2, wherein the tooth clearance of the limiting gear (5) is 0.15mm, and the size and the shape of the fixture block (82) are matched with those of the limiting gear (5).

4. A pitch bearing bolting arrangement according to claim 1, characterised in that said securing means (9) comprises a rectangular block (91), the outer side of said rectangular block (91) being provided with a return spring (92).

5. A pitch bearing bolting arrangement according to claim 4, characterised in that one end of said return spring (92) is fixedly connected with a pin (93) extending through a rectangular block (91), said pin (93) being plugged into the cover plate (1).

6. A pitch bearing bolting arrangement according to claim 5, wherein said pin securing member (93) is of T-shaped construction.

7. The variable pitch bearing bolt connecting device according to claim 1, wherein a bolt head (10) is arranged at the top of the tested bolt (3), and a permanent magnet piece (11) is fixedly mounted on the outer side of the bolt head (10).

8. A pitch bearing bolting arrangement according to claim 1, characterised in that a fixing block (12) is threadedly connected to the outer side of said threaded rod (6), said fixing block (12) being fixedly connected to said cover plate (1).

9. A pitch bearing bolting arrangement according to any of the claims 1 to 8, characterised in that fixing bolts (13) are arranged around the top of the cover plate (1), said fixing bolts (13) being fixedly connected to the support frame (2).