A lattice composite material tower

Abstract

The present invention proposes a lattice composite pole tower, which belongs to the field of pole tower structure. The problem of poor bearing capacity of existing pole towers is solved. It includes a base, a main beam, a diagonal brace, a transverse brace, an adapter, a groove profile and a holding rod. The number of the bases is multiple, and the multiple bases are distributed in the form of corner points and fixedly connected to the ground. Each of the bases is fixedly connected to a main beam, and multiple diagonal braces and transverse braces are connected between adjacent main beams. The transverse brace is arranged between adjacent diagonal braces. The top of the main beam is fixedly connected to the groove profile through an adapter, and multiple holding rods are fixedly connected to the groove profile. The pole tower is made of composite material, and the composite material is composed of reinforcing fibers and matrix materials. It is mainly used for communication pole towers or power pole towers.

Description

Technical Field

[0001] The invention belongs to the field of pole tower structures, and in particular relates to a lattice type composite material pole tower. Background Art

[0002] The existing lattice tower structure has been widely used in the communication, power, telecommunications and other industries. However, there are certain hidden dangers in the tower structure: the raw materials are mainly various steel plates and steel sections, which have poor weather resistance and high maintenance costs; the tower structure needs to be welded, and cracks easily appear in the welded seams, and the fatigue resistance is poor; the material used for the tower is isotropic, the designability is poor, and the product has a large deadweight; the lattice tower needs to be installed on site by professionals, and the operating cost is high. Summary of the invention

[0003] In order to solve the problems in the prior art, the present invention provides a lattice composite material tower.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a lattice composite pole tower, which includes a base, a main beam, a diagonal rod, a transverse rod, an adapter, a groove profile and a holding rod, wherein the number of the bases is multiple, and the multiple bases are distributed in the form of corner points and fixedly connected to the ground, each of the bases is fixedly connected to a main beam, and multiple diagonal rods and transverse rods are connected between adjacent main beams, and the transverse rods are arranged between adjacent diagonal rods. The top of the main beam is fixedly connected to the groove profile through an adapter, and multiple holding rods are fixedly connected to the groove profile. The pole tower is made of composite material, and the composite material is composed of reinforcing fibers and a matrix material.

[0005] Furthermore, the base is fixed to the ground by bolts, and the base is lined with metal.

[0006] Furthermore, the main beam includes a left arm, a right arm and a cross arm, the upper ends of the left arm and the right arm are connected to form an angle, the left arm and the right arm are connected by a cross arm, the left arm, the right arm and the cross arm are connected to form an A-shaped section, and are pultruded in a direction vertical to the A-shaped section.

[0007] Furthermore, the cross arm is located 1 / 3 away from the lower free ends of the left arm and the right arm.

[0008] Furthermore, the free ends of the lower parts of the left arm and the right arm are both circular in shape, and the diameter of the circle is greater than the rectangular thickness of the left arm or the right arm.

[0009] Furthermore, the connecting ends of the diagonal tie rods and the transverse tie rods are provided with circular grooves, the front ends of the circular grooves are provided with rectangular grooves, the diagonal tie rods and the transverse tie rods are connected to the free ends of the main beams through the circular grooves and the rectangular grooves, and the connections are fixed by bolts.

[0010] Furthermore, the diagonal tie rods are butt-jointed in a forward and reverse figure eight shape.

[0011] Furthermore, the groove-shaped profiles are connected by connecting rods.

[0012] Furthermore, an antenna is hung on the pole.

[0013] Furthermore, the reinforcing fiber includes carbon fiber fabric, glass fiber fabric or basalt fiber fabric, and the matrix material includes epoxy thermosetting resin, polyester thermosetting resin or phenolic thermosetting resin.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention solves the problem of poor bearing capacity of the existing pole tower. The overall structure of the present invention is convenient for construction, the connection is reliable, and the material has good weather resistance. All components can be continuously produced, modularly processed and assembled on the construction site. The connection between the main beam and the horizontal tie rod and the diagonal tie rod forms a local self-locking structure under the action of the bolt tightening force, and the bearing capacity of the connection structure is enhanced by the local extrusion force and the shear stress between the composite material layers. The invention is suitable for communication pole towers, power pole towers or other composite material polygonal tower structures. Each direction of this type of polygonal structure has an equal bearing capacity, and the product has a long service life, high strength, convenient molding, easy processing, simple connection and good weather resistance. The present invention has good weather resistance and can be maintenance-free within 10 years; the composite material structures are connected to each other by a mixed connection of mechanical and self-locking structures, and the connection reliability is strong. The composite material is a transversely isotropic material, the structure is highly designable, and there is a significant weight reduction effect. All components are profiled, the connection form is reliable, and the on-site installation is simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a lattice composite material tower structure according to the present invention;

[0016] Figure 2 This is a schematic diagram of the connection structure between the base and the main beam of the present invention;

[0017] Figure 3 It is a schematic diagram of the connection structure between the main beam and the diagonal tie rod and the transverse tie rod according to the present invention;

[0018] Figure 4 This is a schematic diagram of a top view of the structure of a lattice-type composite material tower according to the present invention;

[0019] Figure 5 It is a schematic cross-sectional view of the main beam according to the present invention;

[0020] Figure 6 It is a schematic diagram of the connection method between the main beam and the diagonal tie rod and the transverse tie rod according to the present invention;

[0021] Figure 7This is a schematic diagram of the base structure of the present invention;

[0022] Figure 8 It is a schematic diagram of the structure of the adapter described in the present invention.

[0023] 1-base, 2-main beam, 3-diagonal brace, 4-transverse brace, 5-adapter, 6-trough profile, 7-round rod, 8-connecting rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] See also Figure 1-8 This embodiment is described, a lattice composite pole tower, which includes a base 1, a main beam 2, a diagonal brace 3, a transverse brace 4, an adapter 5, a groove profile 6 and a holding rod 7. The base 1 is multiple in number, and the multiple bases 1 are distributed in the form of corner points and fixedly connected to the ground. Each of the bases 1 is fixedly connected to a main beam 2, and multiple diagonal braces 3 and transverse braces 4 are connected between adjacent main beams 2. The transverse brace 4 is arranged between adjacent diagonal braces 3. The top of the main beam 2 is fixedly connected to the groove profile 6 through an adapter 5, and multiple holding rods 7 are fixedly connected to the groove profile 6. The pole tower is made of a composite material, and the composite material is composed of reinforcing fibers and a matrix material.

[0026] The shape of the lattice composite tower of this embodiment is a regular polygon, the number of polygon sides is greater than or equal to 3, the reinforcing fiber includes carbon fiber fabric, glass fiber fabric or basalt fiber fabric, and the matrix material includes epoxy thermosetting resin, polyester thermosetting resin or phenolic thermosetting resin. The base 1 is fixed to the ground by bolts, and the base 1 is lined with metal, and the main beam 2 of the tower is fixed on the base 1. The main beam 2 includes a left arm, a right arm and a cross arm, the upper ends of the left arm and the right arm are connected to form an angle, the left arm and the right arm are connected by a cross arm, and the left arm, the right arm and the cross arm are connected to form an A-shaped cross section, and the A-shaped cross section is pultruded in the vertical direction, and the shape of the lower free ends of the left arm and the right arm are both circular, and the circular diameter is greater than the rectangular thickness of the left arm or the right arm. The circular diameter is greater than the rectangular thickness of the left arm or the right arm, and the shape of the lower free ends of the left arm and the right arm transitions from a rectangle to a circle to form a transition area, and the circular transition area is used to cooperate with the inclined rod 3 and the horizontal rod 4. The A-shaped section formed by the connection of the left arm, the right arm and the cross arm includes an inner ring area, an outer ring area, a cross bar area and a cross area. The inner ring area, the outer ring area and the cross bar area are all composed of two layers of composite materials. Each layer of composite materials in the inner ring area is wound along the perimeter of the inner triangle, each layer of composite materials in the outer ring area is wound along the outer perimeter of the A-shaped section, and each layer of composite materials in the cross bar area is wound along the inner perimeter of the A-shaped section. The enclosed area of ​​the inner ring area, the outer ring area and the cross bar area is the cross area, and the cross area is filled with composite materials. The interface of the two layers of composite materials in the inner ring area is located on the left and right sides of the symmetry axis of the A-shaped section. The angle formed by the connecting ends of the left arm and the right arm is less than 180 degrees. The angle is determined according to the overall structural shape when in use. If the number of sides of the polygon formed is n, the angle is (n-2)*180 / n. The structural stability is highest when the cross arm is located 1 / 3 away from the lower free end of the left arm and the right arm. The connecting ends of the inclined brace 3 and the horizontal brace 4 are provided with circular grooves, and the front ends of the circular grooves are provided with rectangular grooves. The inclined brace 3 and the horizontal brace 4 are connected to the free ends of the main beam 2 through the circular grooves and the rectangular grooves, and the connection is fixed by bolts. Due to the circular shape, the inclined brace 3 or the horizontal brace 4 and the main beam 2 are partially squeezed at the lower semicircle near the opening. The bolts are located at the rectangular grooves of the inclined brace 3 and the horizontal brace 4. The circular structure diameter of the main beam 2 is greater than the rectangular structure width. When the circular structure diameter of the main beam 2 is equal to 1.5 times the rectangular structure width, the stability of the structure is the best. The inclined brace 3 is connected in a positive and negative figure eight shape, and the groove profiles 6 are connected by connecting rods 8. The antenna or other accessories are hung on the holding rod 7. The adapter 5 includes a V-shaped part and a straight-shaped part. The V-shaped part is connected to the main beam 2, and the straight-shaped part is connected to the groove profile 6. SMC or BMC grinding and pressing molding is adopted.

[0027] The lattice composite material tower provided by the present invention is introduced in detail above. The principle and implementation mode of the present invention are described in detail using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A lattice composite tower, characterized in that: It comprises a base (1), a main beam (2), a diagonal brace (3), a transverse brace (4), an adapter (5), a groove profile (6) and a holding rod (7). The base (1) is multiple in number, and the multiple bases (1) are distributed in the form of corner points and fixedly connected to the ground. Each of the bases (1) is fixedly connected to a main beam (2), and multiple diagonal brace (3) and transverse brace (4) are connected between adjacent main beams (2). The transverse brace (4) is arranged between adjacent diagonal brace (3). The top of the main beam (2) is fixedly connected to the groove profile (6) through an adapter (5), and multiple holding rods (7) are fixedly connected to the groove profile (6). The pole tower is made of composite materials. The composite material is composed of reinforcing fibers and a matrix material. The main beam (2) comprises a left arm, a right arm and a cross arm. The upper ends of the left arm and the right arm are connected to form an angle. The left arm and the right arm are connected via a cross arm. The left arm, the right arm and the cross arm are connected to form an A-shaped cross section, which is pultruded in a vertical direction along the A-shaped cross section. The free ends of the lower parts of the left arm and the right arm are both circular in shape, and the circular diameter is greater than the rectangular thickness of the left arm or the right arm. The connecting ends of the diagonal brace (3) and the cross brace (4) are both provided with circular grooves, and the front ends of the circular grooves are provided with rectangular grooves. The diagonal brace (3) and the cross brace (4) are matched and connected to the free ends of the main beam (2) via the circular grooves and the rectangular grooves, and the connection is fixed by bolts.

2. A lattice composite tower according to claim 1, characterized in that: The base (1) is fixed to the ground by bolts, and the base (1) is lined with metal.

3. The lattice composite tower according to claim 1, characterized in that: The cross arm is located 1 / 3 away from the lower free ends of the left arm and the right arm.

4. The lattice composite tower according to claim 1, characterized in that: The diagonal tie rods (3) are butt-jointed in a forward and reverse figure eight shape.

5. The lattice composite tower according to claim 1, characterized in that: The grooved profiles (6) are connected via connecting rods (8).

6. The lattice composite tower according to claim 1, characterized in that: An antenna is suspended on the holding pole (7).

7. A lattice composite tower according to any one of claims 1 to 6, characterized in that: The reinforcing fibers include carbon fiber fabrics, glass fiber fabrics or basalt fiber fabrics, and the matrix material includes epoxy thermosetting resin, polyester thermosetting resin or phenolic thermosetting resin.

Images