CN218117965U

CN218117965U - Fan tower cylinder flange connection structure

Info

Publication number: CN218117965U
Application number: CN202222352131.9U
Authority: CN
Inventors: 刘越渲; 黄世耿; 吴俊熙; 方国贤
Original assignee: Guangdong Yuedian Shibeishan Wind Energy Development Co ltd
Current assignee: Guangdong Yuedian Shibeishan Wind Energy Development Co ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2022-12-23
Anticipated expiration: 2032-09-05

Abstract

The utility model discloses a fan tower section of thick bamboo flange joint structure, including two flange bodies, two a plurality of flange joint screws have all been seted up on the flange body, and every two upper and lower positions are corresponding equal threaded connection has the kingbolt between the flange joint screw, and the equal threaded connection in every kingbolt upper end has fixation nut, every a plurality of side screws, every have all been seted up on the fixation nut equal threaded connection has the top to push away the screw on the side screw. Has the advantages that: the multiple jacking screws can evenly transmit pretightening force to the flange connecting screw holes, so that the pretightening force is transmitted to the two flange bodies, the flange connecting screw holes and the main bolts can be locked by pure tension, the bottom bolt washers and the top bolt washers can stretch the main bolts like springs in the process of screwing the main bolts, clamping force for fixing the two flange bodies together can be generated, and the connection stability between the two flange bodies is effectively improved.

Description

Fan tower cylinder flange connection structure

Technical Field

The utility model relates to a fan tower section of thick bamboo coupling assembling technical field especially relates to fan tower section of thick bamboo flange joint structure.

Background

The wind turbine tower is a tower pole of wind power generation, and mainly plays a supporting role in a wind generating set and absorbs the vibration of the set. Generally, the tower pole is formed by connecting a plurality of fan tower drums, and when the plurality of fan tower drums are connected, flanges are often needed for alignment installation. The current fan tower section of thick bamboo flange adopts the bolt to go on more, nevertheless connects with the bolt under long-time stress, the not hard up problem easily appears, leads to the joint strength between the fan tower section of thick bamboo flange not enough, influences the tower pole overall stability, consequently needs design a fan tower section of thick bamboo flange joint structure.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem existing in the prior art, and the fan tower section of thick bamboo flange joint structure that provides.

In order to realize the purpose, the utility model adopts the following technical scheme:

fan tower section of thick bamboo flange joint structure, including two flange bodies, two a plurality of flange joint screws have all been seted up on the flange body, and every two upper and lower positions are corresponding equal threaded connection has a main bolt between the flange joint screw, and the equal threaded connection in every main bolt upper end has fixation nut, every a plurality of side screws have all been seted up on the fixation nut, every equal threaded connection has the top that pushes away the screw on the side screw, every the equal fixed mounting in top that pushes away the screw upper end has the fixed head.

In the flange connection structure of the fan tower cylinder, the lower end of the main bolt is fixedly provided with the bolt head, the diameter of the bolt head is larger than that of the flange connection screw hole, and the diameter of the fixing head is larger than that of the side screw hole.

In the fan tower cylinder flange connection structure, the main bolt is slidably connected with a bottom bolt washer and a top bolt washer, the bottom bolt washer and the top bolt washer are both located at the lower end of the main bolt, and through holes matched with the main bolt are formed in the bottom bolt washer and the top bolt washer.

In foretell fan tower section of thick bamboo flange joint structure, a plurality of wedge rings are installed to bottom bolt gasket upper end fixed, a plurality of wedge grooves have been seted up to the lower lateral wall of top bolt gasket, and every wedge groove matches with the wedge ring that corresponds respectively.

In the fan tower cylinder flange connection structure, a wedge surface angle of the wedge-shaped ring is larger than a thread lead angle of the main bolt.

In the flange connection structure of the fan tower cylinder, the main bolt, the fixing nut and the pushing screw are all made of hard metal materials.

Compared with the prior art, the utility model discloses the advantage lies in:

1: through the design of a plurality of top pushing screws, after the top pushing screws are installed in place on the fixing nuts, the pretightening force can be uniformly transmitted to the flange connecting screw holes, so that the pretightening force is transmitted to the two flange bodies, the flange connecting screw holes and the main bolts can be locked by pure tension, and the stable connection effect between the two flange bodies is improved.

2: through the cooperation of bottom bolt packing ring, top bolt packing ring, wedge groove and wedge ring, can stretch the main bolt like the spring at the in-process of screwing up the main bolt, can produce the clamp force of fixing two flange bodies together from this, if the main bolt is tried to rotate not hard up, bottom bolt packing ring and top bolt packing ring then can prevent the main bolt not hard up through increasing the clamp force, have further improved the connection stability between two flange bodies.

3: the installation of the main bolt with a plurality of jacking screws can generate huge bolt pressure only by using a common manual wrench or a pneumatic wrench, which means that there is no safety risk from huge hydraulic pressure, danger of crushing injury, danger of a large crane or a large tool, or danger of breakage of flange connection screw holes under high pressure.

To sum up, the utility model discloses a plurality of top pushes away on the screw can be even transmission pretightning force arrives the flange joint screw to also transmit two flange bodies on, flange joint screw and kingbolt then can be locked by pure tension this moment, bottom bolt packing ring and top bolt packing ring can be at the in-process of screwing up kingbolt like the tensile kingbolt of spring, can produce the clamp force of fixing two flange bodies together from this, effectively improve the connection stability between two flange bodies.

Drawings

Fig. 1 is a schematic structural view of a fan tower cylinder flange connection structure provided by the present invention;

FIG. 2 is a schematic view of the structure of the plane a in FIG. 1;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: the flange comprises a flange body 1, a flange connecting screw hole 2, a main bolt 3, a fixing nut 4, a bolt washer at the bottom 5, a bolt washer at the top 6, a bolt head 7, a through hole 8, a side screw hole 9, a pushing screw 10, a fixing head 11, a wedge-shaped ring 12 and a wedge-shaped groove 13.

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 efforts all belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the fan tower cylinder flange connection structure comprises two flange bodies 1, wherein a plurality of flange connection screw holes 2 are formed in each of the two flange bodies 1, a main bolt 3 is in threaded connection between every two corresponding flange connection screw holes 2 at the upper and lower positions, a fixing nut 4 is in threaded connection with the upper end of each main bolt 3, a plurality of side screw holes 9 are formed in each fixing nut 4, a jacking screw 10 is in threaded connection with each side screw hole 9, and a fixing head 11 is fixedly mounted at the upper end of each jacking screw 10;

the above is noteworthy:

1. the main bolt 3 can adopt the existing bolt for connecting the fan tower cylinder flange, and through the design of a plurality of pushing screws 10, after the main bolt is installed on the fixing nut 4 in place, the plurality of pushing screws 10 uniformly transmit pretightening force to the flange connecting screw hole 2, so that the pretightening force is transmitted to the two flange bodies 1, at the moment, the flange connecting screw hole 2 and the main bolt 3 can be locked by pure tension, and the stable connection effect between the two flange bodies 1 is improved.

2. The installation of the main bolt 3 with a plurality of jacking screws 10 can generate a huge bolt pressure only by using a common manual wrench or a pneumatic wrench, which means that there is no safety risk from a huge hydraulic pressure, risk of crushing injury, risk of a large crane or a large tool, or risk of breakage of the flange connection screw hole 2 under a high pressure.

3. The lower end of the main bolt 3 is fixedly provided with a bolt head 7, the diameter of the bolt head 7 is larger than that of the flange connecting screw hole 2, and the diameter of the fixing head 11 is larger than that of the side screw hole 9.

4. The main bolt 3, the fixing nut 4 and the pushing screw 10 are all made of hard metal materials (the hard metal materials can be alloy steel materials), the mechanical strength of the connecting structure can be improved due to the use of the hard metal materials, and the problem that the connecting stability of the two flange bodies 1 is poor due to insufficient strength of the connecting structure is solved.

5. Sliding connection has bottom bolt packing ring 5 and top bolt packing ring 6 on the kingbolt 3, and bottom bolt packing ring 5 and top bolt packing ring 6 all are located the kingbolt 3 lower extreme, all set up on bottom bolt packing ring 5 and the top bolt packing ring 6 with kingbolt 3 matched with through-hole 8, bottom bolt packing ring 5 and top bolt packing ring 6 all adopt hard material, through the design of the two, can avoid pushing away the problem that top bolt 10 leads to indenture or wearing and tearing to appear in flange body 1 surface with flange body 1 direct contact.

6. Bottom bolt washer 5 upper end fixed mounting has a plurality of wedge rings 12, a plurality of wedge grooves 13 have been seted up to top bolt washer 6's lower lateral wall, and every wedge groove 13 cooperatees with corresponding wedge ring 12 respectively, cooperation through wedge groove 13 and wedge ring 12, can be at the tightening in-process like the tensile main bolt 3 of spring, can produce the clamp force of fixing two flange bodies 1 together from this, if main bolt 3 is tried to rotate not hard up, bottom bolt washer 5 and top bolt washer 6 then can prevent main bolt 3 not hard up through increasing the clamp force, the connection stability between two flange bodies 1 has further been improved.

7. The wedge ring 12 has a wedge angle that is greater than the lead angle of the kingbolt 3, and the design here has the advantage that the rotational loosening of the kingbolt 3 is prevented by the wedge locking effect and is effective even in the worst case.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Fan tower section of thick bamboo flange joint structure, including two flange bodies (1), its characterized in that, two a plurality of flange joint screw (2) have all been seted up on flange body (1), and per two upper and lower positions are corresponding equal threaded connection has main bolt (3) between flange joint screw (2), and the equal threaded connection in every main bolt (3) upper end has fixation nut (4), every a plurality of side screw (9) have all been seted up on fixation nut (4), every equal threaded connection has top pushing screw (10) on side screw (9), every top pushing screw (10) the equal fixed mounting in upper end has fixed head (11).

2. The fan tower flange connection structure according to claim 1, wherein a bolt head (7) is fixedly mounted at the lower end of the main bolt (3), the diameter of the bolt head (7) is larger than that of the flange connection screw hole (2), and the diameter of the fixing head (11) is larger than that of the side screw hole (9).

3. The fan tower cylinder flange connection structure according to claim 1, wherein the main bolt (3) is slidably connected with a bottom bolt washer (5) and a top bolt washer (6), the bottom bolt washer (5) and the top bolt washer (6) are both located at the lower end of the main bolt (3), and through holes (8) matched with the main bolt (3) are formed in the bottom bolt washer (5) and the top bolt washer (6).

4. The fan tower flange connection structure according to claim 3, wherein a plurality of wedge rings (12) are fixedly mounted at the upper end of the bottom bolt washer (5), a plurality of wedge grooves (13) are formed in the lower side wall of the top bolt washer (6), and each wedge groove (13) is respectively matched with the corresponding wedge ring (12).

5. The wind turbine tower flange connection according to claim 4, characterized in that the wedge ring (12) has a wedge surface angle that is greater than the lead angle of the king bolts (3).

6. The fan tower flange connection structure according to claim 1, wherein the main bolts (3), the fixing nuts (4) and the jacking screws (10) are made of hard metal materials.