A transmission tower angle steel anti-buckling reinforcement device

Abstract

The present invention relates to a transmission iron tower angle steel buckling prevention reinforcement device, the reinforcement device comprises an external connection member, an internal connection pre-tightening external member, an internal connection pre-tightening internal member, an internal connection member, and a first bolt; the external connection member comprises a first steel plate and a second steel plate, one end of the first steel plate is hinged with the internal connection pre-tightening external member, and the other end is L-shapedly connected with one end of the second steel plate; the other end of the second steel plate is hinged with the internal connection pre-tightening internal member; the internal connection pre-tightening external member and the internal connection pre-tightening internal member are locked by a first bolt; the external connection member is used to be arranged on the outside of the transmission iron tower angle steel, and the internal connection member is used to be arranged on the inside of the transmission iron tower angle steel, and the internal connection pre-tightening external member and the internal connection pre-tightening internal member are locked by the first bolt on the inside of the transmission iron tower angle steel, thereby realizing the reinforcement of the transmission iron tower angle steel. The present invention can effectively improve the anti-buckling reinforcement effect of the transmission iron tower angle steel.

Description

Technical Field

[0001] The invention relates to the field of iron tower reinforcement devices, and more specifically to an anti-buckling reinforcement device for angle steel of a power transmission iron tower. Background Art

[0002] With the rapid development of my country's economy, the mileage of power transmission lines has continued to increase, and the number of power transmission towers has continued to increase. As the service time of power transmission towers increases, their angle steel rods continue to age. When the power transmission lines are affected by extreme weather such as typhoons in coastal areas, the power transmission towers will be damaged due to failure of the angle steel (mostly buckling), and the entire line will be cut off, causing great economic losses to industrial and agricultural production and people's lives. Therefore, designing a safe, reliable and easy-to-construct power transmission tower angle steel reinforcement device is of great significance for reinforcing the in-service towers, improving their operating safety, and ensuring the smoothness of industrial and agricultural production and people's lives.

[0003] From the perspective of the currently disclosed transmission tower angle steel reinforcement devices, there are mainly the component parallel reinforcement angle steel method (a new component is connected in parallel to the side of the original component to form a new combined component), the method of adding a cross diaphragm, and the T-shaped combined angle steel reinforcement method (consisting of the reinforced angle steel, the reinforcing angle steel and the connecting piece). The technical problems existing in these methods are:

[0004] (1) Component parallel reinforcement angle steel method: Most of its connections require drilling holes on the reinforced angle steel (bolting connection), which not only damages the original angle steel, but also makes the construction very inconvenient. In addition, the reinforcement only works on one side of the single flange of the angle steel, resulting in poor reinforcement effect. T-shaped combined angle steel reinforcement method: It can prevent the single flange of the reinforced angle steel from buckling outward, but cannot prevent it from buckling inward or the buckling of the other flange.

[0005] (2) Adding diaphragms: This method can improve the dynamic characteristics and overall lateral resistance of the transmission tower structure, but it has little effect on improving the local buckling of the rods. Summary of the invention

[0006] The present invention provides a transmission tower angle steel anti-buckling reinforcement device to overcome the defect that the transmission tower angle steel anti-buckling reinforcement effect is poor in the prior art.

[0007] The reinforcement device includes an external connection member, an internal connection pre-tightening external member, an internal connection pre-tightening internal member, an internal connection member, and a first bolt;

[0008] The external connecting member comprises a first steel plate and a second steel plate, one end of the first steel plate is hinged to the internal connecting pre-tightening external member, and the other end is connected to one end of the second steel plate in an L-shape; the other end of the second steel plate is hinged to the internal connecting pre-tightening internal member;

[0009] The inner connection pre-tightening outer part and the inner connection pre-tightening inner part are locked by a first bolt;

[0010] The outer connecting piece is used to be arranged on the outside of the angle steel of the transmission tower, that is, the outer connecting piece is installed on the right angle outside of the angle steel of the transmission tower during installation. The inner connecting piece is used to be arranged on the inside of the angle steel of the transmission tower, that is, the inner connecting piece is installed on the right angle inside of the angle steel during installation. The inner connecting pre-tightening outer piece and the inner connecting pre-tightening inner piece lock the inner connecting piece to the inner side of the angle steel of the transmission tower through the first bolt, thereby realizing the reinforcement of the angle steel of the transmission tower.

[0011] Preferably, the inner connecting member is a trapezoidal steel bar.

[0012] Preferably, the trapezoidal steel bar is an isosceles trapezoidal steel bar, and the angle between the two oblique sides of the isosceles trapezoid is 90°.

[0013] Preferably, the reinforcement device is further provided with a second bolt;

[0014] The trapezoidal steel bar, the inner connection pre-tightening outer part, and the inner connection pre-tightening inner part are respectively provided with screw holes matching the second bolts.

[0015] The screw holes on the trapezoidal steel bar penetrate the trapezoidal top side and the bottom side of the trapezoidal steel bar;

[0016] The second bolt passes through the screw holes on the trapezoidal steel bar, the inner connection pre-tightening outer part and the inner connection pre-tightening inner part in sequence to fasten the three together.

[0017] Preferably, the inner connection pre-tightening inner part is a Z-shaped steel plate.

[0018] Preferably, the inner connection pre-tightening inner part comprises a third steel plate, a fourth steel plate, and a fifth steel plate.

[0019] One end of the third steel plate is hinged to the external connecting member, and the other end is connected to one end of the fourth steel plate, and the other end of the fourth steel plate is connected to the fifth steel plate;

[0020] The angle between the third steel plate and the fourth steel plate is 135°, the angle between the fourth steel plate and the fifth steel plate is 135°, and the third steel plate and the fifth steel plate are parallel;

[0021] Preferably, the distance between the third steel plate and the fifth steel plate is equal to the thickness of the inner connection pre-tightening outer part.

[0022] Preferably, a 45° cut angle is provided on the end of the fifth steel plate away from the connection with the fourth steel plate, and a 45° cut angle is provided on the end of the inner connection preload outer member away from the hinged connection with the outer connection member;

[0023] After the inner connection pre-tightening inner part and the inner connection pre-tightening outer part are tightened, the 45° cut angle on the inner connection pre-tightening outer part fits with one side of the fourth steel plate, the other side of the fourth steel plate fits with a right-angled edge on the inner side of the transmission tower angle steel, and the 45° cut angle on the fifth steel plate fits with another right-angled edge on the inner side of the transmission tower angle steel.

[0024] Preferably, the first steel plate and the second steel plate are integrally formed.

[0025] Preferably, the third steel plate, the fourth steel plate and the fifth steel plate are integrally formed.

[0026] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: the present invention adopts a bolt connection reinforcement method, which makes on-site construction convenient and quick; the bolts used for reinforcement are placed on the outside of the reinforced angle steel, avoiding drilling holes on the reinforced angle steel, which can effectively reduce the damage to the reinforced angle steel and avoid the construction inconvenience caused by drilling holes on the reinforced angle steel; the reinforcement parts can be assembled in advance or assembled at the reinforcement site, making the reinforcement work more flexible and effectively reducing the transportation burden; it can be used for permanent reinforcement of transmission towers and for temporary reinforcement (for example, when it is necessary to use tools with a large deadweight on the tower or to apply a large external load during maintenance of the transmission tower, or when strong winds occur in local areas); the inner and outer sides of the angle steel flange are reinforced at the same time, so that the reinforcement effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the anti-buckling reinforcement device for the angle steel of the transmission tower described in Example 1.

[0028] Figure 2 Schematic diagram of external connectors.

[0029] Figure 3 Schematic diagram of internal connection pre-tightening external parts.

[0030] Figure 4 This is a schematic diagram of the internal connection pre-tightening internal parts.

[0031] Figure 5 Schematic diagram of the internal connection parts.

[0032] In the figure, 1-external connecting part, 2-internal connecting pre-tightening external part, 3-internal connecting pre-tightening internal part, 4-internal connecting part, 5-first bolt, 6-second bolt, 7-third bolt, 8-transmission tower angle steel, 1.1-first steel plate, 1.2-second steel plate, 3.1-third steel plate, 3.2-fourth steel plate, 3.3-fifth steel plate. DETAILED DESCRIPTION

[0033] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0034] In order to better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0035] It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0036] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0037] Example 1

[0038] This embodiment provides a transmission tower angle steel anti-buckling reinforcement device, such as Figure 1-5 As shown, the reinforcement device includes an external connection member 1, an internal connection pre-tightening external member 2, an internal connection pre-tightening internal member 3, an internal connection member 4, and a first bolt 5;

[0039] The outer connecting member 1 comprises a first steel plate 1.1 and a second steel plate 1.2. One end of the first steel plate 1.1 is hinged to the inner connecting pre-tightening outer member 2, and the other end is connected to one end of the second steel plate 1.2 in an L-shape; the other end of the second steel plate 1.2 is hinged to the inner connecting pre-tightening inner member 3;

[0040] The inner connection pre-tightening outer part 2 and the inner connection pre-tightening inner part 3 are locked by a first bolt 5;

[0041] The outer connecting part 1 is used to be arranged on the outside of the transmission tower angle steel 8, and the inner connecting part 4 is used to be arranged on the inside of the transmission tower angle steel 8. The inner connecting pre-tightening outer part 2 and the inner connecting pre-tightening inner part 3 lock the inner connecting part 4 on the inside of the transmission tower angle steel 8 through the first bolt 5, thereby realizing the reinforcement of the transmission tower angle steel 8.

[0042] After the outer connecting part 1, the inner connecting pretightening outer part 2 and the inner connecting pretightening inner part 3 are locked, the three parts form a right triangle shape, the first steel plate 1.1 and the second steel plate 1.2 are the right angle sides of the right triangle respectively, and the locked inner connecting pretightening outer part 2 and the inner connecting pretightening inner part 3 are combined into the hypotenuse of the right triangle.

[0043] The inner connecting member 4 is a trapezoidal steel bar.

[0044] The trapezoidal steel bar is an isosceles trapezoidal steel bar, and the angle between the two oblique sides of the isosceles trapezoid is 90°.

[0045] The reinforcement device is also provided with a second bolt 6;

[0046] The trapezoidal steel bar, the inner connection pre-tightening outer part 2, and the inner connection pre-tightening inner part 3 are respectively provided with screw holes matching the second bolt 6.

[0047] The screw holes on the trapezoidal steel bar penetrate the trapezoidal top side and the bottom side of the trapezoidal steel bar;

[0048] The second bolt 6 passes through the screw holes on the trapezoidal steel bar, the inner connection pretightening outer member 2 and the inner connection pretightening inner member 3 in sequence to fasten the three together.

[0049] The inner connection pre-tightening inner part 3 is a Z-shaped steel plate.

[0050] The inner connection pre-tightening inner part 3 comprises a third steel plate 3.1, a fourth steel plate 3.2, and a fifth steel plate 3.3.

[0051] One end of the third steel plate 3.1 is hinged to the external connecting member 1, and the other end is connected to one end of the fourth steel plate 3.2, and the other end of the fourth steel plate 3.2 is connected to the fifth steel plate 3.3;

[0052] The angle between the third steel plate 3.2 and the fourth steel plate 3.2 is 135°, the angle between the fourth steel plate 3.2 and the fifth steel plate 3.3 is 135°, and the third steel plate 3.1 and the fifth steel plate 3.3 are parallel;

[0053] The distance between the third steel plate 3.1 and the fifth steel plate 3.3 is equal to the thickness of the inner connection pre-tightening outer part 2.

[0054] A 45° cut angle is provided on the end of the fifth steel plate 3.3 away from the connection with the fourth steel plate 3.2, and a 45° cut angle is provided on the end of the inner connection preload outer member 2 away from the hinged connection with the outer connection member 1;

[0055] After the inner connection pre-tightening inner part 3 is fastened to the inner connection pre-tightening outer part 2, the 45° cut angle on the inner connection pre-tightening outer part 2 fits with one side of the fourth steel plate 3.2, the other side of the fourth steel plate 3.2 fits with a right-angled edge on the inner side of the transmission tower angle steel 8, and the 45° cut angle on the fifth steel plate 3.3 fits with another right-angled edge on the inner side of the transmission tower angle steel 8.

[0056] The first steel plate 1.1 and the second steel plate 1.2 are integrally formed.

[0057] The third steel plate 3.1, the fourth steel plate 3.2 and the fifth steel plate 3.3 are integrally formed.

[0058] As a specific embodiment, the various components of the present invention are described in detail below in combination with specific circumstances:

[0059] The transmission tower angle steel buckling prevention reinforcement device described in this embodiment is composed of four parts: an external connection member 1, an internal connection pre-tightening internal member 3, an internal connection pre-tightening external member 2, and an internal connection member 4, wherein:

[0060] The external connection member 1 is formed by two 8mm thick steel plates, namely, the first steel plate 1.1 and the second steel plate 1.2 are welded perpendicularly to each other to form an L-shape, the steel plate is 300mm long, and the net length of the inner side of the L-shape is the same as the flange width in the angle steel model. A round steel pipe with a length of 75mm, an inner diameter of 10mm, and an outer diameter of 15mm is welded at the four ends of the L-shaped flange. The steel pipe is used to reserve bolt holes when the inner connection pre-tightening inner part 3 and the inner connection pre-tightening outer part 2 are connected using the third bolt 7; In this embodiment, the steel pipe is used in conjunction with the third bolt 7 to realize the hinged connection of the external connection member 1 with the inner connection pre-tightening outer part 2 and the inner connection pre-tightening inner part 3 respectively.

[0061] The inner connection pre-tightening outer part 2 is a steel plate with a straight cross-section, a thickness of 8mm, a width of 150mm, a round steel pipe with a welding length of 150mm, an inner diameter of 10mm and an outer diameter of 15mm at the right end of the steel plate. The inner wall of the steel pipe at both ends within a length of 50mm is threaded for connection with the outer connection part using a third bolt. The right end of the steel plate is chamfered with an angle of 45 degrees. There are 6 bolt holes on the steel plate, and there are 2 bolt holes with a diameter of 6mm at the upper and lower ends of the steel plate, which are used to use the first bolt 5 to achieve the fastening between the inner connection pre-tightening outer part 2 and the inner connection pre-tightening inner part 3; there are 2 bolt holes with a diameter of 10mm in the middle of the steel plate, which are used to use the second bolt 6 to achieve the fastening between the inner connection part 4, the inner connection pre-tightening outer part 2, and the inner connection pre-tightening inner part 3; so that the inner connection part 4 is not easy to slip.

[0062] Internal connection preload internal parts 3 (such as Figure 4 As shown), it is a steel plate with a Z-shaped cross section, including a third steel plate 3.1, a fourth steel plate 3.2, and a fifth steel plate 3.3. The steel plate is 8 mm thick and 150 mm wide. A round steel pipe with a length of 150 mm, an inner diameter of 10 mm, and an outer diameter of 15 mm is welded at the left end of the steel plate. The inner wall of both ends of the steel pipe within a range of 50 mm is threaded for connection with the third bolt in the external connecting member 1. The left end of the steel plate is cut at an angle of 45 degrees. There are 6 bolt holes on the steel plate in the right half of the Z shape, as shown in FIG. Figure 4 As shown, there are two bolt holes with a diameter of 6 mm at the upper and lower ends of the steel plate, and their function is to use the first bolt to achieve the fastening between the internal connection pre-tightening outer part 2 and the internal connection pre-tightening inner part 3; there are two bolt holes with a diameter of 10 mm in the middle of the steel plate, and their function is to use the second bolt 6 to achieve the fastening between the internal connection part 4, the internal connection pre-tightening outer part 2, and the internal connection pre-tightening inner part 3; so that the internal connection part 4 is not easy to slip off.

[0063] Internal connector 4 (such as Figure 5As shown), it is a steel bar with a trapezoidal cross-section. The thickness of the steel bar and the length of the upper and lower sides of the trapezoid are determined by the width of the angle steel flange. The length of the steel bar is 300mm. There are two bolt holes (without threads) with a diameter of 10mm in the middle of the steel bar. Its function is to use the second bolt 6 to achieve the fastening between the inner connecting part 4, the inner connecting pre-tightening outer part 2, and the inner connecting pre-tightening inner part 3; so that the inner connecting part 4 is not easy to slip off.

[0064] In the specific implementation process, the specific installation method is as follows:

[0065] (1) Determine the weak parts of the transmission tower (parts that need to be reinforced) through theoretical analysis or numerical simulation;

[0066] (2) As required, the inner connection pre-tightening outer member 2, the inner connection pre-tightening inner member 3, and the inner connection member 4 can be connected and assembled together by the second bolt 6 at the component processing site or the starting point of the reinforcement work. In order to reduce the inconvenience of transportation, the outer connection member 1 and the inner connection pre-tightening inner member 3 can be connected together by the third bolt 7 at the construction site, and then the outer connection member 1 and the inner connection pre-tightening outer member 2 can be connected together by the third bolt 7;

[0067] (3) Draw installation positioning lines at the same horizontal position on the outer and inner sides of the flange of the transmission tower angle steel 8 to be reinforced;

[0068] (4) Install the assembled connector on the outside of the angle steel to be reinforced, with the lower edge of the external connector aligned with the installation position line on the outside of the flange of the reinforced angle steel;

[0069] (5) Place a magnet on the outer side of the flange of the external connector 1 to temporarily fix it on the transmission tower angle steel 8;

[0070] (6) Install the inner connector 4 on the inner side of the flange of the reinforced transmission tower angle steel 8, wherein the lower edge of the inner connector is aligned with the installation position line on the inner side of the flange of the reinforced angle steel;

[0071] (7) Rotate the inner connection pre-tightening inner part 3 clockwise to make it close to the inner connection part 4, and rotate the inner connection pre-tightening outer part 2 counterclockwise to make it close to the inner connection pre-tightening inner part 3;

[0072] (8) Use four first bolts 5 to screw into the four bolt holes with a diameter of 6 mm on the upper and lower parts of the inner connection pre-tightening outer part to connect the inner connection pre-tightening inner part 3 and the inner connection pre-tightening outer part 2 together;

[0073] (9) Use two second bolts 6 to screw into the two bolt holes (with threads) with a diameter of 10 mm in the middle of the inner connection pre-tightening outer part to fasten the reinforced transmission tower angle steel 8, the outer connection part 1, the inner connection part 4, the inner connection pre-tightening inner part 3, and the inner connection pre-tightening outer part 2 together. At this point, the angle steel reinforcement is completed.

[0074] The same or similar reference numerals correspond to the same or similar components;

[0075] The terms used in the drawings to describe positional relationships are only used for illustrative purposes and should not be construed as limiting this patent;

[0076] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A transmission tower angle steel anti-buckling reinforcement device, characterized in that: The reinforcement device comprises an external connection member, an internal connection pre-tightening external member, an internal connection pre-tightening internal member, an internal connection member, and a first bolt; The external connecting member comprises a first steel plate and a second steel plate, one end of the first steel plate is hinged to the internal connecting pre-tightening external member, and the other end is connected to one end of the second steel plate in an L-shape; the other end of the second steel plate is hinged to the internal connecting pre-tightening internal member; The inner connection pre-tightening outer part and the inner connection pre-tightening inner part are locked by a first bolt; The outer connecting piece is used to be arranged on the outer side of the transmission tower angle steel, and the inner connecting piece is used to be arranged on the inner side of the transmission tower angle steel. The inner connecting pre-tightening outer piece and the inner connecting pre-tightening inner piece lock the inner connecting piece on the inner side of the transmission tower angle steel through the first bolt, thereby realizing the reinforcement of the transmission tower angle steel; The internal connection pre-tightening outer part is a steel plate with a straight cross section, a thickness of 8mm, a width of 150mm, and a round steel pipe with a welding length of 150mm, an inner diameter of 10mm, and an outer diameter of 15mm at the right end of the steel plate.

2. The anti-buckling reinforcement device for angle steel of power transmission tower according to claim 1, characterized in that: The cross section of the inner connecting piece is trapezoidal.

3. The anti-buckling reinforcement device for angle steel of power transmission tower according to claim 2, characterized in that: The inner connecting piece is a trapezoidal steel bar.

4. The anti-buckling reinforcement device for angle steel of transmission tower according to claim 3, characterized in that: The trapezoidal steel bar is an isosceles trapezoidal steel bar, and the angle between the two oblique sides of the isosceles trapezoid is 90°.

5. The transmission tower angle steel buckling prevention reinforcement device according to claim 3 or 4, characterized in that: The reinforcement device is also provided with a second bolt; The inner connecting piece, the inner connecting pre-tightening outer piece, and the inner connecting pre-tightening inner piece are respectively provided with screw holes matching the second bolts. The screw holes on the trapezoidal steel bar penetrate the trapezoidal top and bottom sides of the trapezoidal steel bar; The second bolt passes through the screw holes on the trapezoidal steel bar, the inner connection pre-tightening outer part and the inner connection pre-tightening inner part in sequence to fasten the three together.

6. The transmission tower angle steel buckling prevention reinforcement device according to claim 5, characterized in that: The cross section of the inner connection pre-tightening inner part is Z-shaped.

7. The transmission tower angle steel buckling prevention reinforcement device according to claim 6, characterized in that: The internal connection pre-tightening internal parts include the third steel plate, the fourth steel plate and the fifth steel plate. One end of the third steel plate is hinged to the external connecting member, and the other end is connected to one end of the fourth steel plate, and the other end of the fourth steel plate is connected to the fifth steel plate; The included angle between the third steel plate and the fourth steel plate is 135°, the included angle between the fourth steel plate and the fifth steel plate is 135°, and the third steel plate is parallel to the fifth steel plate.

8. The transmission tower angle steel buckling prevention reinforcement device according to claim 7, characterized in that: The distance between the third steel plate and the fifth steel plate is equal to the thickness of the inner connection pre-tightening outer part.

9. The transmission tower angle steel buckling prevention reinforcement device according to claim 8, characterized in that: A 45° cut angle is provided on the end of the fifth steel plate away from the connection with the fourth steel plate, and a 45° cut angle is provided on the end of the inner connection preload outer member away from the hinged connection with the outer connection member; After the inner connection pre-tightening inner part and the inner connection pre-tightening outer part are tightened, the 45° cut angle on the inner connection pre-tightening outer part fits with one side of the fourth steel plate, the other side of the fourth steel plate fits with a right-angled edge on the inner side of the transmission tower angle steel, and the 45° cut angle on the fifth steel plate fits with another right-angled edge on the inner side of the transmission tower angle steel.

10. The transmission tower angle steel buckling prevention reinforcement device according to claim 9, characterized in that: The first steel plate and the second steel plate are integrally formed; the third steel plate, the fourth steel plate and the fifth steel plate are integrally formed.

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