Lossless reinforcing device and reinforcing method applied to single-angle steel structure of power transmission tower

Abstract

The invention discloses a lossless reinforcing device and reinforcing method applied to a single-angle steel structure of a power transmission tower, the lossless reinforcing device is connected to the single-angle steel structure of the power transmission tower, and the lossless reinforcing device comprises a buckle, reinforcing angle steel and at least two limiting plates; the limiting plates are fixedly connected to the reinforcing angle steel at intervals, clamping grooves matched with the back of the single-angle steel structure are formed in the limiting plates, the reinforcing angle steel is connected with the back of the single-angle steel structure in a clamped mode through the clamping grooves of the limiting plates to form symmetrical attaching pieces with cross-shaped cross sections, and rapid limiting of the reinforcing angle steel relative to the single-angle steel structure is achieved. The buckles are connected with the limb tips, on the same side relative to the symmetry axis, of the attaching pieces in a clamped mode to achieve fixation between the reinforcing angle steel and the single-angle steel structure. The lossless reinforcing device has the beneficial effects that the purpose of improving the compression and bending stable bearing capacity of the single angle steel of the power transmission tower is achieved, drilling and welding on the original angle steel are avoided, and in-situ lossless reinforcing can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of transmission tower angle steel reinforcement, and in particular to a non-destructive reinforcement device and a reinforcement method for a single angle steel structure of a transmission tower. Background Art

[0002] With the rapid development of the national economy and infrastructure, the power industry is booming. As one of the basic industries of the national economy, the power industry is a key factor in ensuring national life and social stability, and is closely related to the development of national economy and people's livelihood. The transmission tower is the direct support structure of the power grid line, and its safety and reliability directly affect the normal operation of the entire transmission line.

[0003] With the development of power networks, the voltage level of transmission lines is getting higher and higher, and the transmission capacity is getting larger and larger, resulting in the internal force of transmission tower components exceeding the design bearing capacity. The increase in internal force of old tower components in service is mainly due to changes in usage conditions and updates to design standards in the power industry and related professions. This has resulted in some transmission towers in service being unable to meet the new design conditions. Therefore, some transmission towers need to be reinforced.

[0004] There are many limitations on the research of transmission tower reinforcement. The transmission tower needs to be kept in an energized state, and the reinforcement process cannot affect the normal operation of the transmission tower. It is necessary to avoid drilling or welding on the original structure of the transmission tower to avoid damage to the original structure of the transmission tower and affect its bearing capacity. In addition, high-altitude operations are difficult and risky, and reinforcement tools need to be simple and convenient, easy to install, and ensure the safety and efficiency of reinforcement operations. Therefore, there are still no mature and generally recognized reinforcement technologies and means. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a non-destructive reinforcement device and reinforcement method for the single angle steel structure of a transmission tower, which is specifically achieved by the following technical solutions:

[0006] The non-destructive reinforcement device applied to the single-angle steel structure of the transmission tower is connected to the single-angle steel structure of the transmission tower, and comprises: a buckle, a reinforcement angle steel and at least two limit plates; the limit plates are fixedly connected to the reinforcement angle steel at intervals, and a slot matching the back of the single-angle steel structure is provided on the limit plates. The reinforcement angle steel is clamped with the back of the single-angle steel structure through the slot of the limit plate to form a symmetrical fitting with a cross-shaped cross-section, so as to realize rapid limitation of the reinforcement angle steel relative to the single-angle steel structure; the buckles are respectively clamped with the limb tips of the fitting on the same side of the symmetry axis to realize the fixation between the reinforcement angle steel and the single-angle steel structure.

[0007] A further design of the lossless reinforcement device applied to the single-angle steel structure of the transmission tower is that the buckle includes: two fasteners including a detour portion and an adjusting connector for connecting the two fasteners, each fastener is abutted against one limb of the angle steel fitting through the detour portion to form a fixed fulcrum, and the two fixed fulcrums and the limiting plate form a triangular structure.

[0008] A further design of the non-destructive reinforcement device applied to the single-angle steel structure of the transmission tower is that the fastener is a round steel piece, one end of the round steel piece is bent at α° to form the circuitous portion, and the other end is a connecting portion with a thread, and the spiral directions of the threads of the two fastener connecting portions are opposite.

[0009] A further design of the non-destructive reinforcement device applied to the single angle steel structure of the transmission tower is that α∈[44, 46].

[0010] A further design of the non-destructive reinforcement device applied to the single angle steel structure of a power transmission tower is that the adjusting connecting piece is a connecting sleeve with an internal thread.

[0011] A further design of the non-destructive reinforcement device applied to the single-angle steel structure of the transmission tower is that the connecting sleeve is an elongated hexagonal nut-like structure with a length of 4 to 5 times the diameter of the round steel piece.

[0012] A further design of the non-destructive reinforcement device applied to the single angle steel structure of the transmission tower is that the diameter of the round steel piece is 1.5 to 2 times the wall thickness of the single angle steel component of the transmission tower.

[0013] A further design of the non-destructive reinforcement device applied to the single angle steel structure of the transmission tower is that the limit plate is two triangular plates, the plates are fixed to the reinforcing angle steel by welding, and the slot is formed between the two plates.

[0014] A further design of the non-destructive reinforcement device applied to the single angle steel structure of a transmission tower is that the length of the reinforcement angle steel relative to the reinforcement area of ​​the single angle steel structure is 1 / 2 to the entire length of the single angle steel structure.

[0015] The present invention also provides a method for reinforcing the single-angle steel structure of a transmission tower by using the above-mentioned non-destructive reinforcement device for the single-angle steel structure of a transmission tower, wherein the reinforcing angle steel fixedly connected to the limiting plate is abutted against the back of the single-angle steel structure of the tower through a slot to realize rapid positioning of the single-angle steel structure of the power tower and the reinforcing angle steel to form a symmetrical fitting with a cross-shaped cross-section; then at least three buckles are respectively clamped to the limb tips of the fitting on the same side of the symmetry axis with respect to the symmetry axis, and a spacing of 4 to 5 times the limb width of the single-angle steel structure is set between the buckles; when the buckles are all tightly clamped on the fitting, the reinforcement operation is completed.

[0016] The advantages of the present invention are as follows:

[0017] The invention provides a non-destructive reinforcement device for a single angle steel structure of a power transmission tower. The device comprises a limiting plate with a clamping groove fixedly connected to the outer side surfaces of both ends of the reinforcement angle steel and used for fixing the single angle steel structure of the tower; the single angle steel structure is matched with the clamping groove to ensure that no slippage and dislocation occur, so as to form a cross-section combined structure; buckles are respectively installed at two right angles formed by the outer angle side of the reinforcement angle steel and the outer angle side of the original single angle steel component, so as to ensure that the cross-section structure of the combination of the reinforcement angle steel and the single angle steel structure of the tower is firm and can work together, improve the inertia moment of the original angle steel section, reduce the slenderness ratio of the angle steel, achieve the purpose of improving the compressive and bending stable bearing capacity of the single angle steel of the power transmission tower, avoid drilling and welding on the original angle steel, and realize in-situ non-destructive reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of a nondestructive reinforcement device applied to the single-angle steel structure of a transmission tower.

[0019] Figure 2 A side view of a nondestructive reinforcement device used for the single-angle steel structure of a transmission tower.

[0020] Figure 3 Schematic diagram of the reinforcement of the non-destructive reinforcement device used in the single angle steel structure of the transmission tower

[0021] In the figure, 1-single angle steel structure; 2-reinforcement angle steel; 3-positive round steel; 4-negative round steel; 5-adjusting connector; 6-limiting plate. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is described in detail below.

[0023] Embodiment 1

[0024] like Figure 1 The nondestructive reinforcement device for the single-angle steel structure of a transmission tower of the present embodiment is connected to the single-angle steel structure of the transmission tower, and includes: a buckle, a reinforcement angle steel and at least two limiting plates; the limiting plates are fixed to the reinforcement angle steel at intervals, and a slot matching the back of the single-angle steel structure is opened on the limiting plate. The reinforcement angle steel is clamped with the back of the single-angle steel structure through the slot of the limiting plate to form a symmetrical cross-shaped fitting part in cross shape, so as to realize the rapid limitation of the reinforcement angle steel relative to the single-angle steel structure; the buckles are respectively clamped with the limb tips of the fitting part on the same side of the symmetry axis to realize the fixation between the reinforcement angle steel and the single-angle steel structure.

[0025] The buckle of this embodiment includes: two buckle parts with a detour and an adjustment connecting part 5 for connecting the two buckle parts, each buckle part abuts against two end faces of one limb tip of the angle steel fitting part through the detour to form a fixed fulcrum, see Figure 1The two fixed fulcrums and the vertex of the single angle steel structure form a triangular structure, ensuring that the reinforced angle steel and the single angle steel structure are reliably connected and work in coordination.

[0026] The fastener of this embodiment is a round steel piece, one end of which is bent α° to form a circuitous portion, and the other end is a connecting portion with a thread, forming a "7" shape as a whole. The spiral directions of the threads of the two fastener connecting parts are opposite, namely: positive thread round steel 3 and negative thread round steel 4, see Figure 1 .

[0027] A further design is that, in this embodiment, α is set to 45.

[0028] The adjusting connector 5 of this embodiment is a connecting sleeve with internal threads, and the internal threads at both ends of the connecting sleeve are adapted to the tooth round steel 3 and the reverse tooth round steel 4. The connecting sleeve is an extended hexagonal nut-shaped structure, and the length is 4.5 times the diameter of the round steel piece.

[0029] The diameter of the round steel piece in this embodiment is 1.75 times the wall thickness of the single angle steel component of the transmission tower.

[0030] The limiting plates 6 of this embodiment are two triangular plates, which are fixed to the reinforcing angle steel by welding, and a slot is formed between the two plates.

[0031] Furthermore, the length of the reinforced angle steel relative to the reinforced area of ​​the single angle steel structure is 1 / 2 to the entire length of the single angle steel structure.

[0032] Embodiment 2

[0033] The limit plate 6 of this embodiment is a plate with a triangular slot, and the corresponding reinforcing angle steel is provided with a strip-shaped socket adapted to the plate. During assembly, it is only necessary to insert the plate into the socket (the plate and the bottom end of the socket are against each other to achieve positioning), and then fit the reinforcing angle steel to the tower angle steel structure until the angle steel structure is inserted into the slot to achieve rapid assembly of the reinforcing angle steel and the tower angle steel structure.

[0034] The remaining technical features of this embodiment are the same as those of the first embodiment and will not be described again here.

[0035] Embodiment 3

[0036] The present embodiment provides a method for reinforcing a single angle steel structure of a transmission tower using a non-destructive reinforcement device for a single angle steel structure of a transmission tower according to the above-mentioned two side embodiments, specifically comprising: abutting the reinforcing angle steel fixedly connected to a limiting plate against the back of the single angle steel structure of the tower through a slot to achieve rapid positioning of the single angle steel structure of the power tower and the reinforcing angle steel to form a symmetrical fitting with a cross-shaped cross-section; and then respectively clamping three clips to the limb tips of the fitting on the same side of the symmetry axis, with a spacing of 4.5 times the limb width of the single angle steel structure set between the clips, and completing the reinforcement operation when all the clips are tightly clamped to the fitting.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A non-destructive reinforcement device for a single angle steel structure of a power transmission tower, connected to the single angle steel structure of the power transmission tower, characterized in that: include: A buckle, a reinforcing angle steel and at least two limit plates; the limit plates are fixed to the reinforcing angle steel at intervals, and the limit plates are provided with slots that are compatible with the back of the single-angle steel structure. The reinforcing angle steel is clamped with the back of the single-angle steel structure through the slots of the limit plates to form a symmetrical fitting with a cross-shaped cross-section, thereby realizing rapid limitation of the reinforcing angle steel relative to the single-angle steel structure; the buckles are respectively clamped with the tips of the fitting on the same side of the symmetry axis to realize the fixation between the reinforcing angle steel and the single-angle steel structure.

2. The non-destructive reinforcement device for the single angle steel structure of a power transmission tower according to claim 1 is characterized in that The buckle includes: two fasteners including a detour portion and an adjusting connector for connecting the two fasteners, each fastener is abutted against a limb tip of an angle steel fitting through the detour portion to form a fixed fulcrum, and the two fixed fulcrums and the limiting plate form a triangular structure.

3. The non-destructive reinforcement device for the single angle steel structure of a power transmission tower according to claim 1 is characterized in that The fastener is a round steel piece, one end of which is bent at α° to form the circuitous portion, and the other end is a connecting portion with threads, and the spiral directions of the threads of the two fastener connecting portions are opposite.

4. The non-destructive reinforcement device for the single angle steel structure of a power transmission tower according to claim 3 is characterized in that α∈[44，46]。 5. The non-destructive reinforcement device for the single angle steel structure of a power transmission tower according to claim 3 is characterized in that The adjusting connecting piece is a connecting sleeve with internal threads.

6. The non-destructive reinforcement device for the single angle steel structure of a power transmission tower according to claim 4 is characterized in that The connecting sleeve is an extended hexagonal nut-like structure, and its length is 4 to 5 times the diameter of the round steel part.

7. The non-destructive reinforcement device for the single angle steel structure of a power transmission tower according to claim 3 is characterized in that The diameter of the round steel piece is 1.5 to 2 times the wall thickness of a single angle steel component of the transmission tower.

8. The non-destructive reinforcement device for the single angle steel structure of a power transmission tower according to claim 3 is characterized in that The limiting plates are two triangular plates, which are fixed to the reinforcing angle steel by welding, and the slot is formed between the two plates.

9. The non-destructive reinforcement device for the single angle steel structure of a power transmission tower according to claim 2 is characterized in that The length of the reinforced angle steel relative to the reinforced area of ​​the single angle steel structure is 1 / 2 to the full length of the single angle steel structure.

10. A method for reinforcing a single angle steel structure of a power transmission tower using the non-destructive reinforcement device for a single angle steel structure of a power transmission tower as claimed in any one of claims 1 to 9, characterized in that The reinforcing angle steel fixed to the limiting plate is abutted against the back of the single angle steel structure of the tower through the slot to achieve rapid positioning of the single angle steel structure of the electric tower and the reinforcing angle steel to form a symmetrical fitting with a cross-shaped cross-section; then at least three clips are respectively clipped to the limb tips of the fitting on the same side of the symmetry axis, and a spacing of 4 to 5 times the limb width of the single angle steel structure is set between the clips. When the clips are all tightly clamped on the fitting, the reinforcement operation is completed.

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