A power transmission tower reinforcing and damping energy dissipation device

Abstract

The application discloses a power transmission tower reinforcing and damping energy consumption device and belongs to the technical field of power transmission line tower reinforcing, which comprises a constraint steel plate and two equal limb angle steels which are butted to the limb end portions of original main material rods, and the constraint steel plate and the original main material rods enclose a triangular space; the equal limb angle steels are located in the triangular space, and the two equal limb angle steels are back-to-back abutted to form a T-shaped structure; opposite first and second hoops are arranged on the outer sides of the constraint steel plate and the original main material rods, and a first connector is arranged between the first hoop and the constraint steel plate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of power transmission tower reinforcement, and particularly relates to a power transmission tower reinforcement and vibration reduction and energy dissipation device. BACKGROUND

[0002] The statements herein merely provide background technology related to the present application, and do not necessarily constitute prior art.

[0003] At present, the power transmission tower structure itself has insufficient bearing capacity or post-damage, which eventually leads to the destruction of the component and even causes the collapse of the power transmission tower structure, seriously affecting people's normal production and life, and even affecting disaster rescue work. For the buckling damaged power transmission tower angle steel component, although the angle steel component can continue to be used in the case of slight damage, the deformation has occurred and can only be replaced, resulting in a large amount of material resource waste. Therefore, it is of great significance to improve the ability of power grid to resist natural disasters, reinforce the power transmission tower after service, repair the damaged members after the power transmission tower is damaged, and ensure the safe and stable operation of power grid and power supply safety under serious natural disasters.

[0004] At present, there are mainly two types of power transmission tower reinforcement ideas: the first type is to add auxiliary materials to the main materials of the power transmission tower through various methods, or directly replace the weak components in the original structure with another specification of components to strengthen the bearing capacity of the components and improve the stability of the iron tower; the second type is to add cross partitions between the sections of the power transmission tower to enhance the shear capacity and overall stability of the weak sections of the power transmission tower and improve the overall bearing capacity of the structure. However, most of the current reinforcement methods need to punch holes in the original members of the power transmission tower, which weakens the original members and affects the force transmission path and bearing capacity of the power transmission tower; or temporarily disassemble the original stressed components, which will redistribute the internal forces of the tower materials, making the stress of the members in the power transmission tower more complex and leading to the uncertainty of the bearing capacity of the power transmission tower. SUMMARY

[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide a power transmission tower reinforcement and vibration reduction and energy dissipation device, which aims to constrain the compression instability of the power transmission tower angle steel component, reinforce the power transmission tower angle steel and improve the compression bearing capacity of the angle steel.

[0006] In order to achieve the above purpose, the present application is realized by the following technical scheme:

[0007] In a first aspect, the present application provides a power transmission tower reinforcing and damping energy dissipation device, comprising a constraint steel plate and two equal limb angle steels abutting at both limb ends of an original main material bar, the constraint steel plate and the original main material bar forming a triangular space; the equal limb angle steels are located in the triangular space, and the two equal limb angle steels abut against each other to form a T-shaped structure; a first hoop and a second hoop are arranged on the outside of the constraint steel plate and the original main material bar, and a first connector is arranged between the first hoop and the constraint steel plate.

[0008] As a further technical solution, a first lengthened bolt is arranged through the center of the first hoop and connected with the first connector, and the first connector is abutted against the surface of the constraint steel plate.

[0009] As a further technical solution, the first connector comprises a connector support and a first support gasket, the connector support and the first support gasket are connected through a pin shaft, and the first support gasket is abutted against the first lengthened bolt.

[0010] As a further technical solution, the connector support comprises a first bolt sleeve, a first bolt is arranged through one end of the first bolt sleeve, and the first bolt is abutted against the surface of the constraint steel plate; the other end of the first bolt sleeve is connected with the first support gasket through a connecting piece.

[0011] As a further technical solution, the first hoop is a trapezoidal steel plate, the second hoop is an arc-shaped steel plate, and the two hoops are connected through a high-strength bolt; the right-angle corner point of the original main material bar is abutted against the center of the second hoop, and the two limb ends of the original main material bar are abutted against the two ends of the second hoop; a plurality of the first hoops and the second hoops are arranged along the axial direction of the original main material bar at equal intervals.

[0012] As a further technical solution, the first limbs of the two equal limb angle steels are arranged in close contact, and the ends of the first limbs of the two equal limb angle steels are abutted against the right-angle corners of the original main material bar; the second limbs of the two equal limb angle steels are arranged in close contact with the constraint steel plate, and the ends of the second limbs of the two equal limb angle steels are abutted against the two limb ends of the original main material bar.

[0013] As a further technical solution, the second hoop is provided with a second lengthened bolt on each side, the axes of the two second lengthened bolts are perpendicular to each other, the two second lengthened bolts are perpendicular to the two limbs of the original main material bar respectively, the second lengthened bolt is connected with a first air spring, and the first air spring is supported on the outer side surfaces of the two limbs of the original main material bar.

[0014] As a further technical solution, a second connector is arranged between the equal limb angle steel and the inner side surfaces of the two limbs of the original main material bar, one end of the second connector is abutted against the equal limb angle steel, the other end of the second connector is connected with a second air spring, and the second air spring is supported on the inner side surfaces of the two limbs of the original main material bar.

[0015] As a further technical scheme, the second connector comprises two second bolt sleeves connected perpendicularly, one end of each of the two second bolt sleeves is connected with the second support washer through a pin shaft, the other end of each of the two second bolt sleeves penetrates into a second bolt, the second support washer abuts against the second air spring, and the second bolt abuts against the surface of the two limbs of the equal-leg angle steel.

[0016] As a further technical scheme, rubber washers are arranged between the constraint steel plate and the original main material rod, and between the abutting surface of the first lengthened bolt and the first hoop and between the abutting surface of the second lengthened bolt and the second hoop.

[0017] The beneficial effects of the present application are as follows:

[0018] The power transmission tower reinforcing and damping energy dissipation device can reinforce the angle steel member with insufficient bearing capacity in the power transmission tower, can correct and repair the power transmission tower angle steel member that has been damaged by buckling, and effectively improves the overall stability and bearing capacity of the power transmission tower.

[0019] The power transmission tower reinforcing and damping energy dissipation device does not need to punch the original iron tower angle steel, ensures the strength of the iron tower member, avoids stress concentration, and ensures the normal use of the power transmission tower.

[0020] The power transmission tower reinforcing and damping energy dissipation device has the advantages of simple structure, convenient disassembly and maintenance, and can effectively improve the bearing capacity and stability of the power transmission tower.

[0021] The power transmission tower reinforcing and damping energy dissipation device does not need to temporarily disassemble the original stress member, avoids local stress redistribution, and causes danger in the reinforcing process of the power transmission tower.

[0022] The power transmission tower reinforcing and damping energy dissipation device can adjust each component according to the size of the angle steel to be reinforced, ensures the flexibility of the device, and can select a feasible reinforcing form according to the reinforcing requirement.

[0023] The power transmission tower reinforcing and damping energy dissipation device adopts an air spring device, can effectively reduce the vibration generated in the service process of the power transmission tower, consumes a large amount of energy, and avoids the wear of the original tower material caused by rigid support. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings accompanying the specification of the present application serve to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof serve to explain the present application, and do not constitute an improper limitation on the present application.

[0025] Figure 1 It is a whole structure diagram of the power transmission tower reinforcing and damping energy dissipation device.

[0026] Figure 2 This is a top view of the transmission tower reinforcement and vibration reduction energy dissipation device of the present invention;

[0027] Figure 3 This is a detailed drawing of the first connector of the transmission tower reinforcement and vibration reduction energy dissipation device of the present invention;

[0028] Figure 4 This is a detailed drawing of the second connector of the transmission tower reinforcement and vibration reduction energy dissipation device of the present invention;

[0029] In the diagram: the spacing or dimensions between parts have been exaggerated to show their positions; the diagram is for illustrative purposes only.

[0030] Among them, 1 is the original main material rod, 2 is the constraint steel plate, 3 is the first clamp, 4 is the second clamp, 5 is the high-strength bolt, 6 is the first connector, 7 is the second connector, 6-1 is the connector support, 6-1-1 is the bolt sleeve, 6-1-2 is the bolt, 6-2 is the connecting piece, 6-3 is the support washer, 7-1-1 is the bolt sleeve, 7-1-2 is the bolt, 7-2 is the pin, 7-3 is the support washer, 8 is the equal-leg angle steel, 9-1 is the extended bolt, 9-2 is the extended bolt, 9-3 is the extended bolt, 10-1 is the inner air spring, and 10-2 is the outer air spring. Detailed Implementation

[0031] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is intended to include the plural form as well. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] In a typical embodiment of the present invention, such as Figure 1 As shown, a transmission tower reinforcement and vibration reduction energy dissipation device is proposed. The device reinforces the original main member 1, which is a commonly used angle steel specification in lattice steel structures. Multiple devices are arranged along the length of the original main member 1 according to the specific reinforcement requirements.

[0034] like Figure 2 As shown, the plane containing the cross section is defined as the XY plane, and the axis along the original main member 1 is defined as the Z direction, where the Z direction is perpendicular to the XY plane.

[0035] Specifically, the power transmission tower reinforcing and damping energy dissipation device mainly comprises a constraint steel plate 2, a first hoop 3, a second hoop 4, high-strength bolts 5, a first connector 6, a second connector 7, two equal-leg angle steels 8, lengthened bolts 9-1, 9-2 and 9-3, inner air springs 10-1 and outer air springs 10-2. The constraint steel plate 2 and the two equal-leg angle steels 8 are arranged between the two limbs of the original main member 1 and are consistent with the axis direction of the original main member 1. The first hoop 3 and the second hoop 4 are arranged outside the original main member 1 and the constraint steel plate 2. The lengthened bolt 9-1 passes through the first hoop 3 to apply force to the constraint steel plate 2. The lengthened bolts 9-2 and 9-3 pass through the second hoop 4 to apply force to the original main member 1. That is, the lengthened bolts 9-2 and 9-3 pass through the second hoop 4 to form extrusion on the outside of the original main member 1. The lengthened bolt 9-1 passes through the first hoop 3 to apply pressure to the constraint steel plate 2 to form extrusion on the inside of the original main member 1.

[0036] The constraint steel plate 2 is arranged in abutment with the original main member 1. The two ends of the constraint steel plate 2 are in contact with the two limb ends of the original main member 1. The constraint steel plate 2 and the original main member 1 enclose a triangular space. The two equal-leg angle steels 8 are located in the triangular space and abut against each other to form a T-shaped structure. Specifically, the first limbs of the two equal-leg angle steels 8 are arranged in close contact. The ends of the first limbs of the two equal-leg angle steels 8 abut against the right-angle corners of the original main member 1. The second limbs of the two equal-leg angle steels 8 are arranged in close contact with the constraint steel plate 2. The ends of the second limbs of the two equal-leg angle steels 8 abut against the ends of the two limbs of the original main member 1.

[0037] The first hoop 3 and the second hoop 4 are arranged opposite to each other. The first hoop 3 and the second hoop 4 clamp the original main member 1 and the constraint steel plate 2 therebetween.

[0038] Specifically, the first hoop 3 and the second hoop 4 are both made of steel plates. The first hoop 3 is a trapezoidal steel plate. The second hoop 4 is an arc-shaped steel plate. The trapezoidal steel plate can save materials and bear force reasonably. The arc-shaped steel plate is convenient for applying damping energy dissipation devices inside. The two hoops are connected by the high-strength bolts 5. In specific implementation, connecting plates can be arranged on both sides of the steel plates of the first hoop 3 and the second hoop 4. A group of bolt holes are formed in the connecting plates. The high-strength bolts 5 are inserted into the bolt holes of the connecting plates of the first hoop 3 and the second hoop 4 to fixedly connect the two hoops.

[0039] Further, the first connector 6 is arranged between the first hoop 3 and the constraint steel plate 2, and the lengthened bolt 9-1 is connected to the first connector 6 through the first hoop 3. Specifically, a plurality of bolt holes are arranged in the central position of the first hoop 3, and the lengthened bolt 9-1 is arranged in each bolt hole of the plurality of bolt holes. The lengthened bolt 9-1 is connected to one end of the first connector 6, and the other end of the first connector 6 is tightly arranged on the surface of the constraint steel plate 2. The bolt holes on the two side connecting plates of the first hoop 3 are symmetrically arranged on the two sides of the central position of the first hoop 3.

[0040] The first connector 6 includes a connector support 6-1 and a support gasket 6-3, and the connector support 6-1 and the support gasket 6-3 are connected through a connecting plate 6-2. Specifically, the connector support 6-1 includes a bolt sleeve 6-1-1, and a bolt 6-1-2 is arranged in one end of the bolt sleeve 6-1-1. The bolt 6-1-2 is tightly arranged on the surface of the constraint steel plate 2. The other end of the bolt sleeve 6-1-1 is connected to the support gasket 6-3 through the connecting plate 6-2, and the support gasket 6-3 is in contact with the lengthened bolt 9-1.

[0041] The curvature of the second hoop 4 is determined according to the limb length of the original main material member 1 to be reinforced, so that the second hoop can be fitted with the original main material member to be reinforced. The second hoop 4 can be semicircular, and the right angle corner point of the original main material member 1 is tightly arranged on the central position of the second hoop 4, and the two limb ends of the original main material member 1 are tightly arranged on the two end portions of the second hoop 4.

[0042] Two groups of bolt holes are arranged in the non-central position of the second hoop 4, and the axes of the two groups of bolt holes are perpendicular to each other. Specifically, one group of bolt holes is arranged on each side of the arc center of the second hoop 4, and the two groups of bolt holes are symmetrically arranged with respect to the arc center of the second hoop 4. The tangent lines of the two groups of bolt holes are parallel to the two limbs of the original main material member 1, and the axes of the two groups of bolt holes pass through the center of the second hoop 4. Each group of bolt holes is composed of a plurality of axially arranged bolt holes, and the lengthened bolt 9-2 is arranged in the bolt hole. The lengthened bolt 9-2 is connected to the outer air spring 10-2 (i.e. the first air spring), and the outer air spring 10-2 is supported on the outer side surface of the two limbs of the original main material member 1. Rubber gaskets are arranged between the outer air spring and the original main material member.

[0043] Correspondingly, the inner side air spring and the second connector 7 are arranged between the inner side surface of the original main material bar 1 and the isosceles angle steel 8. The second connector 7 includes two vertically connected bolt sleeves 7-1-1, one end of the two bolt sleeves 7-1-1 is connected with a support pad 7-3 through a pin shaft 7-2, the other end of the two bolt sleeves 7-1-1 penetrates into a bolt 7-1-2, the support pad 7-3 abuts against the inner side air spring 10-1 (i.e. the second air spring), and the bolt 7-1-2 abuts against the surface of the two limbs of the isosceles angle steel 8. The inner side air spring 10-1 is supported on the inner side surface of the two limbs of the original main material bar 1, and a rubber pad is arranged at the contact position between the inner side air spring and the original main material bar; the position of the inner side air spring 10-1 at this position corresponds to the position of the outer side air spring 10-2 between the second hoop 4 and the original main material bar 1, that is, the positions of the inner side air spring 10-1 and the outer side air spring 10-2 on the two sides of the original main material bar 1 correspond to each other. Specifically, the one end of the two bolt sleeves 7-1-1 is provided with an extension plate, the support pad 7-3 is also provided with an extension plate, and the extension plates of the two bolt sleeves 7-1-1 and the extension plate of the support pad 7-3 are connected through the pin shaft 7-2, and the other end of the two bolt sleeves 7-1-1 penetrates into the bolt 7-1-2.

[0044] When the main material bar is subjected to external force load, the external force load is transmitted to the original angle steel outer side air spring through the hoop, the air spring is deformed, the internal air is compressed, and the vibration damping and energy dissipation effect is played, part of the energy is reduced; at the same time, the external force load is also uniformly dispersed to the two isosceles angle steels and the air spring inside the original angle steel, the two isosceles angle steels and the connector play a reinforcing role at the same time of being subjected to external force load, and when the stress process ends, the air spring inside the angle steel returns to the original state, extrudes the original angle steel, and resets the original angle steel.

[0045] When the original main material bar 1 is subjected to axial tension or pressure, for the cross section of the bar, the device can effectively disperse the stress on the original main material bar 1 to the isosceles angle steel 8 and the constraint steel plate 2, for the weak cross section of the original main material bar, the stress can be effectively dispersed to the isosceles angle steel 8, the constraint steel plate 2 and the two hoops, thereby reducing the stress on the original main material bar 1 and preventing the original main material from buckling under compression. When the original main material bar 1 is unstable or locally buckled under compression, the stress can be effectively dispersed to the constraint steel plate 2 and the isosceles angle steel 8, reducing the internal force borne by the original main material bar 1 and ensuring the bearing capacity and stability of the structure. Moreover, for the main material bar with long service time, the device can also play a correcting role. At the same time, when the original main material bar 1 is under compression, the lengthening bolt can play the role of stiffening rib, and at this time, the device arranged in the compression area can play the role of improving the buckling critical stress of the compression member and inhibiting the buckling deformation.

[0046] In the preferred embodiment, in order to ensure that the constraint steel plate is tightly fitted with the original main material rod and no additional wear is generated, a rubber gasket is placed between the constraint steel plate 2 and the original main material rod 1. A rubber gasket is placed between the first connector and the constraint steel plate, and a rubber gasket is placed between the second connector and the equal-leg angle steel.

[0047] Since the lengthened bolt directly contacts the first hoop 3 and the second hoop 4, wear is easily generated, which causes stress changes. In order to avoid this situation, a rubber gasket is placed on the fitting surface of the lengthened bolt and the first hoop 3 and the second hoop 4. A rubber gasket is also placed between the lengthened bolt and the air spring, so as to increase the friction.

[0048] In addition, the two equal-leg angle steels need to be cut at an angle, so that they are more tightly fitted with the original main material rod and no wear is generated on the original main material rod. The fitting surfaces of the two equal-leg angle steels are polished.

[0049] Further, a plurality of first hoops and second hoops are sequentially and equidistantly arranged along the axis of the original main material rod. The reinforcing effect can be adjusted by increasing or decreasing the number of the first hoops and the second hoops.

[0050] Compared with other reinforcing devices, the device can adapt to various load modes, effectively improves the overall stability and carrying capacity of the power transmission tower. The device is completely fabricated, and no holes need to be punched on the original material of the power transmission tower on site, so as to effectively avoid damage to the overall structure of the power transmission tower and reduce the construction difficulty. The device does not need to temporarily disassemble the original stressed member, so as to prevent stress redistribution and make the iron tower in a dangerous state during the reinforcing process.

[0051] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A transmission tower reinforcement and vibration damping energy dissipation device, characterized in that, It includes a constraint steel plate and two equal-limb angle steels that are connected to the two ends of the original main member. The constraint steel plate and the original main member form a triangular space. The equal-limb angle steels are located in the triangular space and the two equal-limb angle steels abut back to back to form a T-shaped structure. The constraint steel plate and the original main member are provided with opposing first and second clamps on their outer sides. A first connector is provided between the first clamp and the constraint steel plate. The first clamp is connected to the first connector by a first extended bolt through the center position of the first clamp, and the first connector is pressed against the surface of the constraint steel plate; the first connector includes a connector support and a first support washer; the connector support includes a first bolt sleeve, a first bolt is inserted into one end of the first bolt sleeve, and the first bolt abuts against the middle surface of the constraint steel plate; the other end of the first bolt sleeve is connected to the first support washer through a connecting piece; The first clamp is a trapezoidal steel plate, the second clamp is an arc-shaped steel plate, and the two clamps are connected by high-strength bolts; the right-angle corner of the original main member abuts against the center of the second clamp, and the two ends of the original main member abut against the two ends of the second clamp; multiple first clamps and second clamps are arranged equidistantly along the axial direction of the original main member. The second clamp is provided with second extension bolts on both sides. The axes of the two second extension bolts are perpendicular to each other. The two second extension bolts are perpendicular to the two limbs of the original main member. The second extension bolts are connected to the first air spring. The first air spring is supported on the outer side of the two limbs of the original main member. A second connector is provided between the equal-limb angle steel and the inner sides of the two limbs of the original main member. One end of the second connector abuts against the equal-limb angle steel, and the other end of the second connector is connected to a second air spring, which supports the inner sides of the two limbs of the original main member.

2. The transmission tower reinforcement and vibration damping energy dissipation device as described in claim 1, characterized in that, The connector support and the first support pad are connected by a connecting piece, and the first support pad abuts against the first extension bolt.

3. The transmission tower reinforcement and vibration damping energy dissipation device as described in claim 1, characterized in that, The first legs of the two equal-leg angle steels are attached to each other, and the ends of the first legs of the two equal-leg angle steels abut against the right-angle corner of the original main member. The second legs of the two equal-leg angle steels are attached to the restraint steel plate, and the ends of the second legs of the two equal-leg angle steels abut against the ends of the two legs of the original main member.

4. The transmission tower reinforcement and vibration damping energy dissipation device as described in claim 1, characterized in that, The second connector includes two vertically connected second bolt sleeves. One end of each second bolt sleeve is connected to a second support washer via a pin. The other end of each second bolt sleeve is inserted into a second bolt. The second support washer abuts against a second air spring. The second bolt abuts against the surfaces of the two legs of the equal-limb angle steel.

5. The transmission tower reinforcement and vibration damping energy dissipation device as described in claim 1, characterized in that, Rubber gaskets are provided between the constraint steel plate and the original main member, rubber gaskets are provided on the contact surfaces of the first extended bolt and the first clamp, and rubber gaskets are provided on the contact surfaces of the second extended bolt and the second clamp.

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