CN218438571U

CN218438571U - Truss wind power tower connecting node applying structural high-strength rivet

Info

Publication number: CN218438571U
Application number: CN202222467244.3U
Authority: CN
Inventors: 戴靠山; 杜航; 衡俊霖; 樊轲; 罗宇骁; 杨祖飞; 蒋哲; 熊川楠; 常颖; 刘仰昭
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-02-03
Anticipated expiration: 2032-09-19

Abstract

The utility model belongs to the technical field of wind power equipment, concretely relates to wind power tower connected node. A truss wind power tower connecting node applying a structural high-strength rivet mainly comprises a node steel pipe tower column and a vertical connecting device; two ends of the node steel pipe tower column are respectively connected with the upper tower column section and the lower tower column section through vertical connecting devices; the node steel pipe tower column is provided with two vertically arranged node plates, and a certain angle included angle is formed between the two node plates; the gusset plate is used for connecting the truss diagonal rods. The utility model discloses an use truss wind power tower connected node of structure type rivet that excels in has supplied more stable connection support. The structural high-strength rivet is connected by adopting a rivet pulling technology, is anti-loosening and anti-fatigue, can greatly reduce the maintenance work in the later period, and basically realizes low maintenance and even no maintenance of structural connecting fasteners.

Description

Truss wind power tower connecting node applying structural high-strength rivet

Technical Field

The utility model belongs to the technical field of wind power equipment, concretely relates to wind power tower flange joint.

Background

Wind energy is widely concerned as a clean renewable energy source, and the truss wind power tower can realize the optimal distribution of materials in space, obtain enough strength, rigidity and stability at the minimum material cost, and is widely applied to the field of wind power. At present, the fastening connection mode of the truss type wind power tower is mainly welding and bolt connection. The construction method of bolt connection generally adopts a torque method, the construction method is low in cost and convenient to construct, but the bolt generates pretension by applying torque, and the existence of the torque in the bolt can reduce the bearing capacity of the bolt, ensure that the applied prestress is not accurate enough, reduce the anti-loosening performance of the bolt and other adverse effects. And the bolt connection easily produces fatigue failure or because of the droing that vibrations caused under the alternating load, and simultaneously is great in nut and bolt department space, and the bolt can take place to become flexible or take place stress corrosion and induce delayed fracture to the tower section of thick bamboo flange anti vibration locking and the fatigue resistance that lead to adopting high-strength bolted connection can be relatively poor.

When the fan runs normally, the bolts of the connecting parts run in the resultant force of various vibrations for a long time, so that the bolts are easy to loosen. In order to prevent the local bolt from being sheared due to uneven stress after the bolt loosens, the bolt must be checked regularly. In addition, the flange plate of the traditional wind power tower cylinder is in an eccentric tension state in the working process, after the outer edge of the flange plate is opened and moved, the stress of the bolt can be linearly increased along with the tensile force of the cylinder wall, the stress amplitude can be obviously increased, and therefore the flange plate of the traditional wind power tower cylinder has certain structural defects.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an use purlin formula wind power tower connected node that rivet is connected by force, replace traditional flange to be used for the connection between the column node to compensate traditional bolted connection and ring flange and be connected the defect that exists, reduce connected node's maintenance cost.

In order to achieve the above object, the utility model adopts the following technical scheme: a truss wind power tower connecting node applying a structural high-strength rivet mainly comprises a node steel pipe tower column and a vertical connecting device; two ends of the node steel pipe tower column are respectively connected with the upper tower column tower section and the lower tower column tower section through vertical connecting devices; the steel tube tower column is provided with two node plates which are vertically arranged, a certain angle included angle is formed between the two node plates, and the node plates are used for connecting truss inclined rods.

Preferably, the vertical connecting device comprises mounting grooves and structural high-strength rivets, wherein the mounting grooves are formed in two ends of the node steel pipe tower column; the structural high-strength rivet is matched and fixed with the mounting groove and mounting holes reserved on the upper tower column tower section and the lower tower column tower section.

Preferably, a transverse stiffening plate is arranged between the two gusset plates.

Preferably, the gusset plate is connected with the truss diagonal member through a structural type high-strength rivet and a connecting plate.

Compare with traditional bolt and flange joint among the prior art, the utility model discloses an use truss wind power tower connected node of structure type rivet that excels in has supplied more durable connection support. The structural high-strength rivet is connected by adopting a rivet pulling technology, is anti-loosening and anti-vibration, can greatly reduce the maintenance work in the later period, and basically realizes low maintenance and even zero maintenance of structural connecting fasteners.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of a truss wind power tower connection node using a structural high-strength rivet according to an embodiment of the present invention;

fig. 2 is a front view of a truss wind power tower connection node to which a structural high-strength rivet is applied according to an embodiment of the present invention;

fig. 3 is a left side view of a truss wind power tower connection node to which the structural high-strength rivet is applied according to an embodiment of the present invention;

fig. 4 is a schematic connection diagram of the vertical connecting device and the upper tower column tower section in the embodiment of the present invention;

FIG. 5 is a schematic structural view of a structural high-strength rivet according to an embodiment of the present invention;

FIG. 6 is a schematic view showing the connection between the connection node of the truss wind power tower and the tower sections of the upper and lower towers using the structural high-strength rivet;

in the figure: 1. Node steel tube tower columns; 2. a connecting plate; 3. an I-steel diagonal rod; 4. a gusset plate; 5. an arc-shaped transverse stiffening plate; 6. structural high-strength rivets; 7. a collar; 8. installing a steel pipe tower column tower section; 9. a lower steel pipe tower column tower section; 10. and (4) mounting the groove.

Detailed Description

To facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 1, fig. 2 and fig. 3, the utility model provides an use truss-like wind power tower connected node of structural type high-strength rivet, the component that contains has: the steel tube tower column comprises a node steel tube tower column 1, a connecting plate 2, an I-shaped steel inclined rod 3, a node plate 4, a transverse stiffening plate 5, a structural high-strength rivet 6 and a lantern ring 7.

In this embodiment, the node steel tube tower column 1 is cylindrical, and the outer diameter thereof is matched with the inner diameters of the upper steel tube tower column section 8 and the lower steel tube tower column section 9 to be connected, so that the two ends of the node steel tube tower column 1 are inserted into the upper steel tube tower column section 8 and the lower steel tube tower column section 9 and connected through the vertical connecting device, as shown in fig. 4 and 5.

The connecting device comprises vertical mounting grooves 10 arranged at the end parts of two ends of the node steel pipe tower column 1, a structural high-strength rivet 6, a lantern ring 7 and mounting holes 11 formed in the end parts of an upper steel pipe tower column section 8 and a lower steel pipe tower column section 9. The connection of the node steel pipe tower column 1, the upper steel pipe tower column section 8 and the lower steel pipe tower column section 9 is realized through a rivet pulling technology.

Two gusset plates 4 are welded on the node steel pipe tower column 1, and the two gusset plates are vertically arranged on the node steel pipe tower column 1 and form a certain angle included angle. The included angle between the two gusset plates is 60-90 degrees according to different cross-sectional shapes of the towers. In the case of a triangular tower, the angle between the two gusset plates is preferably 60 degrees. In case of a rectangular tower the angle between the two gusset plates is preferably 90 degrees. The gusset plates 4 serve to connect truss diagonals, such as i-steel diagonals 3 in this embodiment. In order to increase the stability of the gusset plates 4, an arc-shaped transverse stiffening plate 5 is arranged between the two gusset plates to support the gusset plates.

The I-shaped steel diagonal rod 3 is connected to the upper bottom and the lower part of the gusset plate 4 through a left connecting plate 2, a right connecting plate 2 and a structural high-strength rivet 6. Mounting holes are reserved in the upper portions and the lower portions of the I-shaped steel inclined rod 3, the connecting plate 2 and the node plate 4 respectively.

As shown in fig. 5, the structural high-strength rivet 6 is divided into four parts, namely a rivet head 6-1, a polish rod section 6-2, an annular groove section 6-3 and a tail tooth 6-4, and the locking process is as follows: pass the test piece rivet hole with the rivet and sheathe in lantern ring 7, then insert the afterbody of rivet with the muzzle of riveter, make the screw thread interlock of riveter and rivet tail tooth, later just accomplish by the riveter is automatic, and the riveter can be pulled back rivet tail portion automatically and be broken after pulling the trigger to obtain the plate pretightning force through the power of pulling apart.

In this embodiment, the installation process of the truss type wind power tower connection node using the structural high-strength rivet is as follows:

the node steel pipe tower column 1 is prefabricated in a factory, a node plate 4 and a transverse stiffening plate 5 are welded, and an installation groove 10 is formed in the end portion of the prefabricated steel pipe cylindrical tower column. Before assembling the node, punching holes in the node plates 4 and the I-shaped inclined rods 3, and selecting the punching diameter according to the actual diameter and the engineering condition of the structural high-strength rivet 6.

And pre-installing the node plate 4, the I-shaped diagonal rod 3 and the two connecting plates 2, and penetrating a structural high-strength rivet 6 through hole sites of the node plate 4, the I-shaped diagonal rod 3 and the two connecting plates 2. The pre-installation can fix the positions of the gusset plate 4 and the I-shaped diagonal rod 3, and simultaneously, whether the hole position of the structural high-strength rivet which is punched in advance meets the requirement is checked.

The structural high-strength rivet 6 penetrates through rivet holes of a left connecting plate 2, a right connecting plate 2 and a gusset plate 4 or an I-shaped inclined rod web plate 3 and is sleeved with a lantern ring 7, then a gun mouth of a rivet gun is inserted into the tail of the structural high-strength rivet 6, so that the rivet gun is engaged with threads at the tail of the structural high-strength rivet 6 to exert force, then pretension load is continuously exerted through the rivet gun, and further the preset necking section of a tail tooth is automatically broken, so that the pretension force is transferred from the rivet gun to the structural high-strength rivet 6, and the anchoring process is completed.

And connecting the flange joint of the truss type wind power tower assembled by the self to the tower sections of the upper and lower steel pipe towers. The mounting hole that sets up the tip under the last steel pipe column tower festival 8 that will plan to connect aligns with node steel pipe column 1 upper end mounting groove, and the structural type high-strength rivet 6 that reserves in the mounting hole runs through node steel pipe column 1 section of thick bamboo wall and the last steel pipe column tower festival 8 section of thick bamboo wall that plans to connect along mounting groove 10, then as above-mentioned locking process unanimity, locks structural type high-strength rivet 6 through the rivet technique, forms the vertical connecting device of friction type, connects upper steel pipe column tower festival 8 and node steel pipe column 1. In the same connection manner, the lower steel pipe tower sections 9 to be connected are connected with the node steel pipe tower 1, as shown in fig. 6.

Therefore, the truss wind power tower connecting node applying the structural high-strength rivet is installed.

Finally, it should be pointed out that: the above examples are intended only to illustrate the inventive solution and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding embodiments of the present invention.

Claims

1. The utility model provides an use truss wind power tower connected node of structural type rivet that excels in which characterized in that: the tower column mainly comprises a node steel pipe tower column and a vertical connecting device; two ends of the node steel pipe tower column are respectively connected with the upper tower column section and the lower tower column section through vertical connecting devices; the node steel pipe tower column is provided with two vertically arranged node plates, and a certain angle included angle is formed between the two node plates; the gusset plate is used for connecting the truss diagonal rods.

2. The truss wind power tower connection node applying the structural high-strength rivet as claimed in claim 1, wherein: the vertical connecting device comprises mounting grooves and structural high-strength rivets, wherein the mounting grooves are formed in two ends of the node steel pipe tower column; the structural high-strength rivet is matched and fixed with the mounting groove and mounting holes reserved on the upper tower column tower section and the lower tower column tower section.

3. The truss wind power tower connection node applying the structural high-strength rivet according to claim 1, wherein: and a transverse stiffening plate is arranged between the two gusset plates.

4. The truss wind power tower connection node applying the structural high-strength rivet as claimed in claim 1, wherein: the gusset plate is connected with the truss diagonal rods through the structural high-strength rivets and the connecting plates.