CN218438571U - A truss wind power tower connection node using structural high-strength rivets - Google Patents

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

A truss wind power tower connection node using structural high-strength rivets

technical field

The utility model belongs to the technical field of wind power equipment, in particular to a connection flange node of a wind power tower.

Background technique

As a clean and renewable energy source, wind energy has attracted widespread attention. Truss wind power towers can realize the optimal distribution of materials in space, and obtain sufficient strength, stiffness and stability at the minimum material cost, and are widely used in the field of wind power. At present, the fastening connection methods of truss-type wind power towers are mainly welding and bolting. The construction method of bolt connection is generally the torque method, the construction method is low in cost and convenient in construction, but by applying torque to make the bolt generate pre-tension, the existence of internal torque in the bolt will reduce the bearing capacity of the bolt, making the applied pre-stress inaccurate and inaccurate. Reduce the adverse effects such as the anti-loosening performance of the bolts. In addition, the bolted connection is prone to fatigue damage or falling off due to vibration under alternating loads. At the same time, the gap between the nut and the bolt is large, and the bolt will loosen or stress corrosion will induce delayed fracture, which will lead to towers connected by high-strength bolts. The cylinder flange has poor anti-vibration, anti-loosening and anti-fatigue performance.

When the fan is in normal operation, the bolts of the connecting parts run for a long time under the resultant force of various vibrations, which can easily loosen them. In order to prevent local bolts from being sheared due to uneven stress after loosening, regular anti-loosening checks must be carried out on the bolts. In the prior art, regular inspections and maintenance are performed manually, and the labor intensity and operation and maintenance costs are relatively high. In addition, during the working process of the traditional wind power tower, the flange is in an eccentric tension state. When the outer edge of the flange is opened and displaced, the stress of the bolt will increase linearly with the tension of the wall, and the stress amplitude will also increase significantly. Therefore, there are certain structural defects in the traditional wind power tower flange.

Utility model content

The purpose of this utility model is to provide a truss-type wind power tower connection node with high-strength riveting connection, which can replace the traditional flange for the connection between the tower column nodes, so as to make up for the defects of the traditional bolt connection and flange connection. , to reduce the maintenance cost of connected nodes.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a truss wind power tower connection node using structural high-strength rivets, mainly including node steel tube tower columns and vertical connection devices; the two ends of the node steel tube tower columns They are respectively connected to the upper and lower tower columns through vertical connection devices; the node steel pipe towers are provided with two vertically arranged node plates, and there is a certain angle between the two node plates, and the node plates Used to connect truss diagonals.

Preferably, the vertical connection device includes installation grooves and structural high-strength rivets opened at both ends of the steel pipe tower at the node; The mounting holes fit together.

Preferably, a transverse stiffener is provided between two gusset plates.

Preferably, the gusset plate is connected to the diagonal bars of the truss through structural high-strength rivets and connecting plates.

Compared with the traditional bolt and flange connection in the prior art, the connection node of the truss wind power tower using structural high-strength rivets of the utility model provides more durable connection support. Structural high-strength rivets are connected by riveting technology, which is anti-loosening and anti-vibration, which can greatly reduce the maintenance work in the later stage, and basically realize low-maintenance or even zero-maintenance for structural connection fasteners.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a truss wind power tower connection node using structural high-strength rivets in an embodiment of the utility model;

Fig. 2 is the front view of the connection node of the truss wind power tower using structural high-strength rivets in the embodiment of the utility model;

Fig. 3 is a left view of the connection node of the truss wind power tower using structural high-strength rivets in the embodiment of the utility model;

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

Fig. 5 is a structural schematic diagram of a structural high-strength rivet in an embodiment of the utility model;

Fig. 6 is a schematic diagram of the connection nodes of the truss wind power tower with structural high-strength rivets and the connection of the upper and lower tower columns in the embodiment of the utility model;

In the figure: 1. Node steel pipe tower column; 2. Connecting plate; 3. I-beam oblique bar; 4. Node plate; 5. Arc transverse stiffening plate; 6. Structural high-strength rivet; Upper steel pipe tower section; 9. Lower steel pipe tower section; 10. Installation groove.

Detailed ways

In order to facilitate the understanding of the utility model, the utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present utility model are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.

As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model provides a truss-type wind power tower connection node using structural high-strength rivets, which includes: node steel pipe tower column 1, connecting plate 2, I-shaped 3 steel diagonal bars, 4 gusset plates, 5 transverse stiffeners, 6 structural high-strength rivets, and 7 collars.

In this embodiment, the node steel pipe tower column 1 is cylindrical, and its outer diameter matches the inner diameter of the upper steel pipe tower column tower section 8 and the lower steel pipe tower column tower section 9 to be connected, so that the two ends of the node steel pipe tower column 1 are inserted The upper steel pipe tower section 8 and the lower steel pipe tower section 9 are connected by a vertical connection device, as shown in Fig. 4 and Fig. 5 .

The connection device includes vertical installation grooves 10 arranged at both ends of the node steel pipe tower 1, structural high-strength rivets 6, collars 7, and the ends of the upper steel pipe tower section 8 and the lower steel pipe tower section 9. The mounting holes 11. The joint steel pipe tower column 1 is connected with the upper steel pipe tower column tower section 8 and the lower steel pipe tower column tower section 9 through riveting technology.

Two node plates 4 are welded on the node steel pipe tower column 1, and the two node plates are vertically arranged on the node steel pipe tower column 1, and form a certain angle. According to the different cross-sectional shapes of the tower, the angle between the two gusset plates takes a value between 60-90 degrees. In the case of a triangular tower, the angle between the two gusset plates is preferably 60 degrees. In the case of a rectangular tower, the angle between two gusset plates is preferably 90 degrees. The role of the gusset plate 4 is to connect the diagonal bars of the truss, such as the I-beam diagonal bars 3 in this embodiment. In order to increase the stability of the gusset plate 4, an arc-shaped transverse stiffener 5 is provided between the two gusset plates to support the gusset plate.

The I-shaped steel oblique rod 3 is connected to the upper bottom and the lower part of the gusset plate 4 through two left and right connecting plates 2 and structural high-strength rivets 6 . Mounting holes are respectively reserved on the upper and lower parts of the I-beam slanting bar 3, the connecting plate 2 and the gusset plate 4.

As shown in Figure 5, the structural high-strength rivet 6 is divided into four parts: the rivet head 6-1, the polished rod section 6-2, the ring groove section 6-3 and the tail tooth 6-4. Pass through the rivet hole of the test piece and put on the collar 7, then insert the muzzle of the rivet gun into the tail of the rivet, so that the rivet gun engages with the thread of the rivet tail, and then it is automatically completed by the rivet gun. After the trigger is pulled, the rivet gun The tail of the rivet will be pulled back automatically, and the pre-tightening force of the plate will be obtained through the force of the breaking.

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

The node steel tube tower column 1 is prefabricated in the factory, the node plate 4 and the transverse stiffener plate 5 are welded, and the installation groove 10 is set at the end of the prefabricated steel tube cylinder tower column. Before the node is assembled, the gusset plate 4 and the I-shaped oblique rod 3 are punched, and the hole diameter is selected according to the actual diameter of the structural high-strength rivet 6 and the engineering situation.

Pre-install the gusset plate 4, the I-shaped diagonal bar 3 and the two connecting plates 2, and use structural high-strength rivets 6 to pass through the holes of the gusset plate 4, the I-shaped diagonal bar 3 and the two connecting plates 2. Pre-installation can fix the positions of the gusset plate 4 and the I-shaped oblique rod 3, and at the same time check whether the structural high-strength rivet holes laid in advance meet the requirements.

Put the structural high-strength rivet 6 through the left and right connecting plates 2 and the gusset plate 4 or the rivet hole of the I-shaped inclined bar web 3 and put the collar 7 on it, and then insert the muzzle of the rivet gun into the structural high-strength rivet 6 At the tail, it is difficult to occlude the thread of the rivet gun and the tail of the structural high-strength rivet 6, and then continue to apply the pre-tension load through the rivet gun, which will cause the preset necking section of the tail to break automatically, so that the pre-tension is transferred from the rivet gun to the structure Type high-strength rivets 6 to complete the anchoring process.

The self-assembled truss-type wind power tower flange joints are then connected to the upper and lower steel pipe tower columns. Align the installation hole set at the lower end of the upper steel pipe tower section 8 to be connected with the installation groove at the upper end of the node steel pipe tower column 1, and the structural high-strength rivet 6 reserved in the installation hole runs through the node steel pipe tower column along the installation groove 10 1 cylinder wall and the upper steel pipe tower section 8 cylinder wall to be connected, and then follow the same locking process as above, lock the structural high-strength rivet 6 through riveting technology to form a friction type vertical connection device, and connect the upper steel pipe tower Tower section 8 and node steel pipe tower column 1. In the same connection way, connect the lower steel pipe tower column section 9 to be connected with the node steel pipe tower column 1, as shown in FIG. 6 .

So far, the truss wind power tower connection node with structural high-strength rivets has been installed.

Finally, it should be pointed out that the above examples are only used to illustrate the solution of the present invention, not to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: they can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features; and these Modification or replacement does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions implemented in the invention.

Claims (4)

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.

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