Grounding cross arm reinforcing adjusting device and adjusting method

Abstract

The application provides a ground wire cross arm reinforcing adjusting device and an adjusting method, and belongs to the technical field of power equipment. The device comprises a plurality of connecting mechanisms which are installed on a plurality of original structure angle steels of a cross arm one by one and a support frame which is connected between the plurality of connecting mechanisms. The device further comprises a plurality of reinforcing and damping mechanisms which are installed on the plurality of original structure angle steels of the cross arm one by one. The reinforcing and damping mechanism comprises a cross reinforcing beam and a damping assembly. The cross reinforcing beam has four right angle regions which are distributed in a quadrant. The original structure angle steel and the damping assembly are installed in two opposite right angle regions respectively. The damping assembly has a damping along the length direction of the cross reinforcing beam. The ground wire cross arm reinforcing adjusting device provided by the application improves the overall structural strength of the original structure angle steel, avoids the deformation and the change of the relative position of the original structure angle steel, and can slow down the vibration of the original structure angle steel.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology, and more specifically, relates to a ground wire crossarm reinforcement and adjustment device and adjustment method. Background Technology

[0002] In recent years, due to changes in the grid structure of the power grid system, the short-circuit current of the ground wires of some transmission lines has increased. At the same time, due to the "dual-channel" requirement for communication, some lines need to be upgraded from old ground wires to OPGW optical cables with larger short-circuit current capacity and combined communication and ground wire functions during the construction process.

[0003] Transmission line towers are the direct supporting structures of transmission lines, characterized by their lightweight and high flexibility. Currently, many old towers in service were designed in the 1980s or even earlier. Their initial design standards and conditions limited safety levels, resulting in insufficient load-bearing capacity, inadequate strength in some diagonal and main members, and low overall rigidity, posing safety hazards. During ground wire upgrades, the increased diameter, tensile strength, and safety factor of the ground wire, coupled with the thinner tower materials at the ground wire crossarms, often lead to overloading of the ground wire crossarms. Furthermore, unbalanced forces during ground wire removal and installation can cause tower instability and overturning. Additionally, the towers encounter extreme weather conditions such as strong winds during normal operation, causing wind-induced vibration. Therefore, it is necessary to reinforce, dampen, and adjust the ground wire crossarms to improve overall stability.

[0004] Currently, there are two main methods for reinforcement: the first involves connecting profiles in parallel to the original angle steel to form a new composite section, increasing its cross-sectional area. The second involves adding transverse diaphragms or auxiliary supports at corresponding locations on the tower. The first method is generally complex to operate, the reinforcement location is relatively fixed, and the dimensions of different towers vary, resulting in less than ideal applicability. The invention patent "A Tower Reinforcement Device and Its Construction Method" (application number 201810056960.8) proposes adding additional members to the original members and using jacks to synchronize the force on the additional members with the original members, which is a reinforcement method using parallel angle steel. This method has a fixed reinforcement location, requires pre-fabrication according to the dimensions of the tower to be reinforced, and the device cannot be disassembled and reinstalled, making its applicability less than ideal. The second method also suffers from the drawbacks of high construction difficulty and poor applicability to profiles of different sizes. The utility model patent "A steel pipe tower reinforcement device" (patent number: 202220813120.3) proposes a reinforcement device that can adjust the length of the tower through a telescopic support device to provide support and reinforcement. However, since the base of this device is only applicable to the bottom of the tower, it is not applicable to different parts of the tower.

[0005] In existing technologies, the connection between the reinforced structure and the original material is generally achieved through drilling and welding. The utility model patent "Reinforcement Device for Main Material of Power Tower" (application number: CN20140365666.2) proposes connecting the reinforced main material to the original material on both outer sides using bolts in a "back-to-back" manner, allowing the reinforced main material to share the load of the original main material. However, this method requires drilling bolt holes in the original main material, which damages the original structure of the profile, reduces its load-bearing capacity, and causes localized stress concentration. Furthermore, drilling at high altitudes is extremely difficult. For high-altitude welding operations, the utility model patent "A Reinforced Node Structure for Main Material of Angle Steel Tower of Transmission Line" (application number: 201420115684.5) proposes a structure that can reinforce the tower node position. This invention requires a welding lap joint method, which presents problems such as high operational difficulty, inconvenient construction, and uncontrollable welding quality for high-altitude operations at crossarms. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a grounding crossarm reinforcement and adjustment device that can be adjusted according to the actual tower size and requirements, without causing abandonment due to changes in reinforcement requirements or damage to the original structure due to re-reinforcement.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a grounding crossarm reinforcement and adjustment device is provided, comprising multiple connecting mechanisms installed one-to-one on multiple original structural angle steels of the crossarm and a support frame connected between the multiple connecting mechanisms, and multiple reinforcement and vibration damping mechanisms installed one-to-one on multiple original structural angle steels of the crossarm. Each reinforcement and vibration damping mechanism includes a cross reinforcement beam and a vibration damping component. The cross reinforcement beam has four right-angled zones distributed in quadrants. The original structural angle steels and the vibration damping components are respectively installed in two opposite right-angled zones. The vibration damping component has damping along the length direction of the cross reinforcement beam.

[0008] In one possible implementation, the connecting mechanism includes a first L-shaped clamp and a second L-shaped clamp. The first L-shaped clamp is mounted conformally to the inner corner of the original structural angle steel, and the second L-shaped clamp is mounted conformally to the outer corner of the original structural angle steel. The two free ends of the first L-shaped clamp and the two free ends of the second L-shaped clamp extend to the outer side of the original structural angle steel and are connected by fasteners. An inclined fixing plate is fixedly connected to the inner side of the first L-shaped clamp, and a chassis is fixed on the inclined fixing plate. The chassis is connected to the end of the support frame through a hinge structure.

[0009] In one possible implementation, the support frame is a scissor-type telescopic frame, and a threaded adjusting rod is installed in the central hinge area of ​​the scissor-type telescopic frame. Each of the four freely adjustable ends of the scissor-type telescopic rod is provided with a threaded connecting rod. The ends of the threaded connecting rods are connected to the chassis through the hinge structure. The threaded connecting rods adjust the length of the threaded connecting rods extending beyond the freely adjustable ends by rotating on their own.

[0010] In one possible implementation, the inner corners of the original structural angle steel are further provided with a third L-shaped clamp and a fourth L-shaped clamp, respectively. The third L-shaped clamp and the fourth L-shaped clamp extend to the outer side of the original structural angle steel and are connected to both ends of the cross-shaped reinforcing beam by fasteners.

[0011] In one possible implementation, the vibration damping assembly includes a buffer damping component and a force adjustment component respectively disposed at both ends of the cross-shaped reinforcing beam. The buffer damping component and the force adjustment component are respectively fixed to the right-angle region of the cross-shaped reinforcing beam by reinforcing angle steel. A telescopic adjustment rod is provided between the buffer damping component and the force adjustment component. The telescopic adjustment rod can adjust its length along the length direction of the cross-shaped reinforcing beam. The buffer damping component is used to provide damping of the telescopic adjustment rod along the length direction of the cross-shaped reinforcing beam, and the force adjustment component is used to adjust the magnitude of the damping of the telescopic adjustment rod along the length direction of the cross-shaped reinforcing beam.

[0012] In one possible implementation, the telescopic adjustment rod includes a first sleeve, a second sleeve, and a rotating rod. The rotating rod has external threads on both sides with opposite directions of rotation. The first sleeve and the second sleeve both have internal threads. The first sleeve and the second sleeve are rotatably fitted on both sides of the rotating rod. A rotating block is provided in the middle of the rotating rod. The end of the first sleeve away from the rotating block is connected to the buffer and vibration damping component, and the end of the second sleeve away from the rotating block is connected to the force adjustment component.

[0013] In one possible implementation, the damping component includes a first hydraulic cylinder arranged along the length of the cross-shaped reinforcing beam. The first hydraulic cylinder has first conformal end plates at both ends that conform to the right-angle region. Multiple stiffening ribs are arranged circumferentially on the inner side of the first conformal end plates. The outer wall of the first hydraulic cylinder has two first side plates extending tangentially. The two first side plates are arranged at 90° and are respectively connected to the two inner side walls of the right-angle region of the cross-shaped reinforcing beam by fasteners. The two ends of the two first side plates are respectively fixedly connected to the two first conformal end plates. A first piston rod is provided inside the first hydraulic cylinder, and one end of the first piston rod protruding from the first hydraulic cylinder is threadedly connected to a first sleeve.

[0014] In one possible implementation, the force adjustment component includes a second hydraulic cylinder arranged along the length of the cross-shaped reinforcing beam. The second hydraulic cylinder has two conformal end plates at its ends that fit the right-angle region. Multiple stiffening ribs are arranged circumferentially on the inner side of each conformal end plate. The outer wall of the second hydraulic cylinder has two second side plates extending tangentially. These two side plates are arranged at 90° and connected to the two inner side walls of the right-angle region of the cross-shaped reinforcing beam by fasteners. The two ends of the two side plates are fixedly connected to the two conformal end plates. A second piston rod is provided inside the second hydraulic cylinder. One end of the second piston rod protruding from the second hydraulic cylinder is threadedly connected to a second sleeve. A third hydraulic cylinder is provided on one side of the second hydraulic cylinder. The inner cavity of the third hydraulic cylinder communicates with the inner cavity of the second hydraulic cylinder. An adjusting piston rod is provided inside the third hydraulic cylinder. The adjusting piston rod moves along the length of the third hydraulic cylinder to adjust the oil pressure inside the second hydraulic cylinder.

[0015] In one possible implementation, the intersection of the two first side plates and the intersection of the two second side plates both form a first arc-shaped surface, and the inner corner of the reinforcing angle steel forms a second arc-shaped surface. The curvature of the second arc-shaped surface is more than twice the curvature of the first arc-shaped surface, and the first arc-shaped surface and the second arc-shaped surface enclose an anti-torsional cavity.

[0016] The beneficial effects of the grounding crossarm reinforcement and adjustment device provided by this invention are as follows: Compared with the prior art, multiple connecting mechanisms and multiple reinforcement and vibration damping mechanisms are correspondingly installed on multiple original structural angle steels of the crossarm. The support frame simultaneously connects multiple connecting mechanisms. The reinforcement and vibration damping mechanism includes a cross-shaped reinforcement beam and a vibration damping component. The vibration damping component and the original structural angle steels are respectively located in two opposite right-angle regions of the cross-shaped reinforcement beam. The support frame simultaneously connects multiple connecting mechanisms to form an integrated support structure, improving the overall structural strength of the multiple original structural angle steels and preventing deformation and changes in their relative positions. The cross-shaped reinforcement beam can improve the structural stiffness of each original structural angle steel and reduce its own deformation. Simultaneously, the damping component can provide damping along the length of the cross-shaped reinforcement beam, thus mitigating the vibration of the original structural angle steels themselves.

[0017] The present invention also provides a method for adjusting a grounding crossarm, which uses the aforementioned grounding crossarm reinforcement and adjustment device, and includes the following steps:

[0018] S1: The four first L-shaped clamps are respectively installed on the four free adjustment ends of the scissor-type telescopic frame through a hinge structure. The two adjacent first L-shaped clamps are fixed to the two adjacent original structural angle steels with fasteners in conjunction with the corresponding second L-shaped clamps. Rotate the threaded adjustment rod of the scissor-type telescopic frame so that the other two adjacent first L-shaped clamps abut against the other two original structural angle steels and are fixed to the other two original structural angle steels with fasteners in conjunction with the corresponding second L-shaped clamps.

[0019] S2: Rotate the four threaded connecting rods on the scissor-type telescopic frame respectively, so that the four threaded connecting rods rotate outward to pre-tighten the four original structural angle steels;

[0020] S2: Four cross-shaped reinforcing beams are installed on the back of the four original structural angle steels in the right-angle area. The third L-shaped clamp and the fourth L-shaped clamp at both ends of the inner angle of the original structural angle steel are connected to the cross-shaped reinforcing beams by fasteners. Reinforcing angle steels are installed in the right-angle area of ​​the cross-shaped reinforcing beams relative to the original structural angle steels. The first hydraulic cylinder, the telescopic adjustment rod and the second hydraulic cylinder are installed in sequence, and the first hydraulic cylinder and the second hydraulic cylinder are installed on the reinforcing angle steels at both ends of the right-angle area.

[0021] S4: Rotate the rotating block on the telescopic adjustment rod to move the first sleeve and the second sleeve away from each other to pre-tighten the cross reinforcement beam in the length direction. The adjusting piston rod in the third hydraulic cylinder moves along the length direction of the third hydraulic cylinder to adjust the oil pressure in the inner cavity of the second hydraulic cylinder, so as to change the damping force of the telescopic adjustment rod on the cross reinforcement beam.

[0022] The beneficial effect of the grounding crossarm adjustment method provided by the present invention is that, compared with the prior art, since the above-mentioned grounding crossarm reinforcement and adjustment device is used, it has the same beneficial effect as the grounding crossarm reinforcement and adjustment device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A perspective view of a ground wire crossarm reinforcement and adjustment device provided by the present invention;

[0025] Figure 2 A side view of a ground wire crossarm reinforcement and adjustment device provided by the present invention;

[0026] Figure 3 A front view of a ground wire crossarm reinforcement and adjustment device provided by the present invention;

[0027] Figure 4 A perspective view of the reinforcement and vibration reduction mechanism provided by the present invention;

[0028] Figure 5 A cross-sectional view of the reinforcement and vibration reduction mechanism provided by the present invention;

[0029] Figure 6 A schematic diagram of the structure of the buffer and vibration damping component provided by the present invention;

[0030] Figure 7 This is a schematic diagram of the force-adjusting component provided by the present invention;

[0031] Figure 8 This is a schematic diagram of the scissor-type telescopic frame provided by the present invention;

[0032] Figure 9 This is a schematic diagram of the connection mechanism provided by the present invention;

[0033] Figure 10 An exploded view of the connecting mechanism provided by the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Reinforcement and vibration damping mechanism; 1-1. Original structural angle steel; 1-2. Reinforcing angle steel; 1-3. Cross-shaped reinforcing beam; 1-4. Buffer and vibration damping component; 1-4-1. First conformal end plate; 1-4-2. First sealing gasket; 1-4-3. First piston rod; 1-4-4. First hydraulic cylinder; 1-4-7. Stiffening rib; 1-5. First sleeve; 1-6. Rotating block; 1-7. Second sleeve; 1-8. Force adjustment component; 1-8-1. Second piston rod; 1-8-2. Second hydraulic cylinder; 1-8-3. Adjusting piston rod; 1-8-4. Second sealing gasket; 1-8-5. Second conformal end plate; 1-9. Third L-shaped clamp. 1. Plate; 1-10. Fourth L-shaped clamping plate; 2. Scissor-type telescopic frame; 2-1. First screw; 2-2. First support rod; 2-3. Rotating pin; 2-4. Second support rod; 2-5. Fixed rocker seat; 2-6. Threaded adjusting rod; 2-7. Locking nut; 2-8. Second screw; 2-9. Adjusting rod handle; 2-10. Third screw; 2-11. Third support rod; 2-12. Fourth support rod; 2-13. Fourth screw; 3. Connecting mechanism; 3-1. First L-shaped clamping plate; 3-2. Second L-shaped clamping plate; 3-3. Hinge rivet; 3-4. Chassis; 3-6. Center rivet; 3-7. Rotating support. Detailed Implementation

[0036] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0037] As introduced in the background, to improve the load-bearing capacity of iron towers, reinforcement methods generally involve adding crossbeams or auxiliary supports, or connecting profiles in parallel on the original structural angle steel 1-1 to form a new composite section. The first method is generally complex to operate, the reinforcement location is relatively fixed, and the varying sizes of different iron towers result in less than ideal applicability. The second method also suffers from high construction difficulty and poor applicability to profiles of different sizes. In terms of connection methods, drilling and welding are generally used. Drilling damages the original structure of the profiles, reducing their load-bearing capacity and causing localized stress concentration; furthermore, drilling at high altitudes is extremely difficult. Similarly, high-altitude welding operations are difficult to operate, inconvenient to construct, and lack control over welding quality. To address these problems, this application proposes a ground wire crossarm reinforcement and adjustment device.

[0038] Please see Figures 1 to 10 The present invention will now describe a grounding crossarm reinforcement and adjustment device. A grounding crossarm reinforcement and adjustment device includes multiple connecting mechanisms 3, each corresponding to a plurality of original structural angle steels 1-1 on the crossarm, and a support frame connected between the multiple connecting mechanisms 3. It also includes multiple reinforcement and vibration damping mechanisms 1, each corresponding to a plurality of original structural angle steels 1-1 on the crossarm. Each reinforcement and vibration damping mechanism 1 includes a cross-shaped reinforcement beam 1-3 and a vibration damping component. The cross-shaped reinforcement beam 1-3 has four right-angled zones distributed in quadrants. The original structural angle steels 1-1 and the vibration damping component are respectively installed in two opposite right-angled zones. The vibration damping component has damping along the length of the cross-shaped reinforcement beam 1-3.

[0039] This invention provides a grounding crossarm reinforcement and adjustment device. Compared with the prior art, multiple connecting mechanisms 3 and multiple reinforcement and vibration damping mechanisms 1 are correspondingly installed on multiple original structural angle steels 1-1 of the crossarm. The support frame simultaneously connects multiple connecting mechanisms 3. The reinforcement and vibration damping mechanism 1 includes a cross-shaped reinforcement beam 1-3 and a vibration damping component. The vibration damping component and the original structural angle steels 1-1 are respectively located in two opposite right-angle areas of the cross-shaped reinforcement beam 1-3. The support frame simultaneously connects multiple connecting mechanisms 3 to form an integral support structure, improving the overall structural strength of the multiple original structural angle steels 1-1 and preventing deformation and changes in their relative positions. The cross-shaped reinforcement beam 1-3 can improve the structural stiffness of each original structural angle steel 1-1 and reduce its own deformation. At the same time, the damping component can provide damping along the length of the cross-shaped reinforcement beam 1-3, which can reduce the vibration of the original structural angle steels 1-1 themselves.

[0040] The present invention provides a ground wire crossarm reinforcement and adjustment device, which can adjust the angle, position and structure of the crossarm according to the actual shape and size of the same iron tower, and can adjust the length of the reinforcement and vibration reduction mechanism 1 according to the reinforcement requirements. At the same time, the connection mechanism 3 of the single angle steel and the support frame can be disassembled and can be used separately at different positions of the iron tower for reinforcement, with strong flexibility in installation position.

[0041] In some embodiments, please refer to Figure 9 and Figure 10 The connecting mechanism 3 includes a first L-shaped clamp 3-1 and a second L-shaped clamp 3-2. The first L-shaped clamp 3-1 is installed on the inner corner side of the original structural angle steel 1-1, and the second L-shaped clamp 3-2 is installed on the outer corner side of the original structural angle steel 1-1. The two free ends of the first L-shaped clamp 3-1 and the two free ends of the second L-shaped clamp 3-2 extend to the outer side of the original structural angle steel 1-1 and are connected by fasteners. An inclined fixing plate is fixedly connected to the inner side of the first L-shaped clamp 3-1, and a base plate 3-4 is fixed on the inclined fixing plate. The base plate 3-4 is connected to the end of the support frame through a hinge structure.

[0042] In this embodiment, the first L-shaped clamp 3-1 and the second L-shaped clamp 3-2 are respectively arranged conformally to the inner and outer corners of the original structural angle steel 1-1. The two free ends of the first L-shaped clamp 3-1 and the second L-shaped clamp 3-2 extend to the outer side of the original structural angle steel 1-1. Multiple fastening bolts are used to sequentially and laterally connect the two corresponding free ends of the two clamps, thereby fixing the connecting mechanism 3 to the original structural angle steel 1-1. There is no need to drill holes or weld on the original structural angle steel 1-1, which avoids stress redistribution in the original structural angle steel 1-1 of the transmission tower due to the installation of the reinforcement and adjustment device, and does not affect the safety performance of the original structural angle steel 1-1.

[0043] Furthermore, the inclined fixing plate is integrally formed on the inner side of the first L-shaped clamping plate 3-1, and the inclined fixing plate and the first L-shaped clamping plate 3-1 form a triangular reinforcement area, which can improve the structural strength. The chassis 3-4 is fixed to the middle of the inclined fixing plate by the central rivet 3-6. At the same time, the rotating support 3-7 is fixed by the central rivet 3-6, and the rotating support 3-7 is connected to the end of the support frame through a hinge structure.

[0044] Please see Figure 8 The support frame is a scissor-type telescopic frame 2. A threaded adjustment rod 2-6 is installed in the middle hinge area of ​​the scissor-type telescopic frame 2. Each of the four free adjustment ends of the scissor-type telescopic rod is equipped with a threaded connecting rod. The ends of the threaded connecting rods are connected to the chassis 3-4 through a hinge structure. The threaded connecting rods adjust the length of the threaded connecting rods extending beyond the free adjustment ends by rotating on their own.

[0045] Specifically, the scissor-type telescopic frame 2 includes four support rods and four screws. The four support rods are respectively positioned as the first support rod 2-2, the second support rod 2-4, the third support rod 2-11, and the fourth support rod 2-12. The four screws are respectively defined as the first screw 2-1, the second screw 2-8, the third screw 2-10, and the fourth screw 2-13. The first support rod 2-2, the second support rod 2-4, the third support rod 2-11, and the fourth support rod 2-12 are parallel to each other and hinged at the middle of each pair, with their ends sequentially hinged through rotating pins 2-3 to form a scissor-type structure. The first screw 2-1, the second screw 2-8, the third screw 2-10, and the fourth screw 2-13 are sequentially threaded to the ends of the four support rods. By rotating the four screws, the length of the corresponding screw extending from the ends of the four support rods can be adjusted, which can further improve the support effect on the four original structural angle steels 1-1. The ends of the four screws are provided with lugs, and through holes are opened on the lugs. Hinged rivets 3-3 are inserted through the through holes, thus forming the aforementioned hinge structure between the screws and the rotating support 3-7. Fixed rocker seats 2-5 are installed at two hinge points of the four support rods. Threaded adjusting rods 2-6 are installed in the two fixed rocker seats 2-5. One end of the threaded adjusting rod 2-6 is provided with an adjusting rod handle 2-9 for easy rotation and adjustment. A locking nut 2-7 is threadedly installed on the side of the threaded adjusting rod 2-6 away from the adjusting rod handle 2-9. The locking nut 2-7 is used to fix the distance between the rocker seat 2-5 and the through hole, forming a stable support.

[0046] The scissor-type telescopic frame 2 can be folded up and unfolded by the set screws and support rods, which can save the space occupied by the overall structure and facilitate construction personnel to transport it to the position of the ground wire crossarm for high-altitude operations.

[0047] Please refer to Figure 4 The original structural angle steel 1-1 has a third L-shaped clamp 1-9 and a fourth L-shaped clamp 1-10 respectively at both ends of its inner corner. The third L-shaped clamp 1-9 and the fourth L-shaped clamp 1-10 extend to the outer side of the original structural angle steel 1-1 and are connected to both ends of the cross-shaped reinforcing beam 1-3 by fasteners. The third L-shaped clamp 1-9 and the fourth L-shaped clamp 1-10, together with the cross-shaped reinforcing beam 1-3, form a fixed structure with the original structural angle steel 1-1, thereby ensuring that the cross-shaped fixing rod is stably installed on the original structural angle steel 1-1.

[0048] Please refer to Figure 4The vibration damping assembly includes a buffer damping component 1-4 and a force adjustment component 1-8 respectively located at both ends of the cross-shaped reinforcing beam 1-3. The buffer damping component 1-4 and the force adjustment component 1-8 are fixed to the right-angle area of ​​the cross-shaped reinforcing beam 1-3 by reinforcing angle steel 1-2. The additional reinforcing angle steel 1-2 allows it to bear the load synchronously with the original structural angle steel 1-1, effectively reducing the load on the original structural angle steel 1-1, lowering the risk of overload failure, and significantly improving the reinforcement effect. A telescopic adjustment rod is provided between the buffer damping component 1-4 and the force adjustment component 1-8. The telescopic adjustment rod can adjust its length along the length direction of the cross-shaped reinforcing beam 1-3, adjusting the structural stiffness of the cross-shaped reinforcing beam 1-3 along its length, preventing deflection or torsional deformation of the original structural angle steel 1-1 in the crossbeam during vibration. The damping and shock-absorbing component 1-4 provides damping along the length of the telescopic adjustment rod of the cross-shaped reinforcing beam 1-3, while the force adjustment component 1-8 adjusts the damping magnitude along the length of the telescopic adjustment rod of the cross-shaped reinforcing beam 1-3. Through these components, damping and shock-absorbing component 1-4 and force adjustment component 1-8 provide and adjust the damping magnitude along the length of the cross-shaped reinforcing beam 1-3. When the original structural angle steel 1-1 of the crossarm experiences sudden and severe vibration, the damping and shock-absorbing component 1-4 and force adjustment component 1-8 buffer the force acting on the original structural angle steel 1-1 along its length, preventing irreversible bending and torsion of the original structural angle steel 1-1 and the cross-shaped reinforcing beam 1-3. The damping and shock-absorbing component 1-4 and force adjustment component 1-8 also provide buffering and vibration reduction during the removal or addition of a single-sided ground wire during ground wire replacement, improving the crossarm's ability to cope with extreme weather conditions.

[0049] Please refer to Figure 4 The telescopic adjustment rod includes a first sleeve 1-5, a second sleeve 1-7, and a rotating rod. The rotating rod has external threads on both sides with opposite directions of rotation. Both the first sleeve 1-5 and the second sleeve 1-7 have internal threads. The first sleeve 1-5 and the second sleeve 1-7 are rotatably mounted on both sides of the rotating rod. A rotating block 1-6 is located in the middle of the rotating rod. The end of the first sleeve 1-5 furthest from the rotating block 1-6 is connected to a buffer and vibration damping component 1-4, and the end of the second sleeve 1-7 furthest from the rotating block 1-6 is connected to a force-adjusting component 1-8. Rotating the rotating block 1-6 on the rotating rod causes the rotating rod to rotate axially. Under the action of the opposing threads on both sides of the rotating rod, the first sleeve 1-5 and the second sleeve 1-7 are moved further apart, thereby increasing the stiffness of the cross-shaped reinforcing beam 1-3 along its length, and consequently improving the structural stiffness of the original angle steel 1-1.

[0050] Please refer to Figure 6The buffer and vibration damping component 1-4 includes a first hydraulic cylinder 1-4-4 arranged along the length of the cross-shaped reinforcing beam 1-3. The two ends of the first hydraulic cylinder 1-4-4 are respectively provided with first conformal end plates 1-4-1 that conform to the right angle area. Multiple stiffening ribs 1-4-7 are arranged circumferentially on the inner side of the first conformal end plates 1-4-1. The outer wall of the first hydraulic cylinder 1-4-4 is provided with two first side plates extending tangentially. The two first side plates are arranged at 90° and are respectively connected to the two inner side walls of the right angle area of ​​the cross-shaped reinforcing beam 1-3 by fasteners. The two ends of the two first side plates are respectively fixedly connected to the two first conformal end plates 1-4-1. The first hydraulic cylinder 1-4-4 is provided with a first piston rod 1-4-3 inside. One end of the first piston rod 1-4-3 that passes through the first hydraulic cylinder 1-4-4 is threadedly connected to the first sleeve 1-5.

[0051] Specifically, the first conformal end plates 1-4-1 at both ends of the first hydraulic cylinder 1-4-4 have two mutually perpendicular right-angled sides. The inner side of the first conformal end plate 1-4-1 is provided with a first sealing gasket layer 1-4-2. The first conformal end plate 1-4-1 conforms to the right-angle area of ​​the reinforcing angle steel 1-2. At the same time, the two first side plates are attached to the two inner side walls of the reinforcing angle steel 1-2. The fastening bolts pass through the first side plates, the reinforcing angle steel 1-2 and the cross reinforcing beam 1-3 in sequence, thereby achieving the stable installation of the first hydraulic cylinder 1-4-4. Multiple stiffening ribs 1-4-7 are welded circumferentially to the inner side of the first conformal end plate 1-4-1 and the outer wall of the first hydraulic cylinder 1-4-4 to enhance the structural strength of the first hydraulic cylinder 1-4-4 and the first conformal end plate 1-4-1. A first piston rod 1-4-3 is movably disposed inside the first hydraulic cylinder 1-4-4. One end of the first piston rod 1-4-3 protruding from the first hydraulic cylinder 1-4-4 has an external thread, which passes into the first sleeve 1-5 and achieves a threaded connection. When the first sleeve 1-5 moves along its length, it will drive the first piston rod 1-4-3 to move within the cavity of the first hydraulic cylinder 1-4-4. The hydraulic oil filling the first hydraulic cylinder 1-4-4 creates a damping effect, which can buffer vibration.

[0052] Please refer to Figure 7The force adjustment component 1-8 includes a second hydraulic cylinder 1-8-2 arranged along the length of the cross-shaped reinforcing beam 1-3. Both ends of the second hydraulic cylinder 1-8-2 are respectively provided with second conformal end plates 1-8-5 that conform to the right-angle region. Multiple stiffening ribs 1-4-7 are arranged circumferentially on the inner side of the second conformal end plates 1-8-5. The outer wall of the second hydraulic cylinder 1-8-2 is provided with two second side plates extending tangentially. The two second side plates are arranged at 90° and are respectively connected to the two inner side walls of the right-angle region of the cross-shaped reinforcing beam 1-3 by fasteners. The two ends of the two second side plates are respectively... Two second conformal end plates 1-8-5 are fixedly connected. The second hydraulic cylinder 1-8-2 is equipped with a second piston rod 1-8-1. One end of the second piston rod 1-8-1 that passes through the second hydraulic cylinder 1-8-2 is threadedly connected to the second sleeve 1-7. A third hydraulic cylinder is provided on one side of the second hydraulic cylinder 1-8-2. The inner cavity of the third hydraulic cylinder is connected to the inner cavity of the second hydraulic cylinder 1-8-2. An adjusting piston rod 1-8-3 is provided in the third hydraulic cylinder. The adjusting piston rod 1-8-3 moves along the length of the third hydraulic cylinder to adjust the oil pressure in the inner cavity of the second hydraulic cylinder 1-8-2.

[0053] Specifically, the second conformal end plates 1-8-5 at both ends of the second hydraulic cylinder 1-8-2 have two mutually perpendicular right-angled sides. The inner side of the second conformal end plates 1-8-5 is provided with a second sealing gasket layer 1-8-4. The second conformal end plates 1-8-5 conform to the right-angle area of ​​the reinforcing angle steel 1-2. At the same time, the two second side plates are attached to the two inner side walls of the reinforcing angle steel 1-2. The fastening bolts pass through the second side plates, the reinforcing angle steel 1-2 and the cross reinforcing beam 1-3 in sequence to achieve stable installation of the second hydraulic cylinder 1-8-2. Multiple stiffening ribs 1-4-7 are welded circumferentially to the inner side of the second conformal end plate 1-8-5 and the outer wall of the second hydraulic cylinder 1-8-2 to enhance the structural strength of the second hydraulic cylinder 1-8-2 and the second conformal end plate 1-8-5. A second piston rod 1-8-1 is movably mounted inside the second hydraulic cylinder 1-8-2. One end of the second piston rod 1-8-1 that protrudes from the second hydraulic cylinder 1-8-2 has an external thread, which passes into the second sleeve 1-7 and forms a threaded connection. When the second sleeve 1-7 moves along its length, it will cause the second piston rod 1-8-1 to move within the cavity of the second hydraulic cylinder 1-8-2. The hydraulic oil filling the second hydraulic cylinder 1-8-2 creates a damping effect, which can buffer vibration.

[0054] Meanwhile, the third hydraulic cylinder is integrally formed on one side of the second hydraulic cylinder 1-8-2. The inner cavity of the third hydraulic cylinder is connected to the inner cavity of the second hydraulic cylinder 1-8-2. By adjusting the adjusting piston rod 1-8-3 in the third hydraulic cylinder, the oil pressure in the inner cavity of the second hydraulic cylinder 1-8-2 is changed, thereby adjusting the damping magnitude on one side of the second sleeve 1-7, so as to adapt to the vibration of the original structural angle steel 1-1 of the crossarm in the length direction under different vibrations.

[0055] Please refer to Figure 5 The intersection of the two first side plates and the intersection of the two second side plates both form a first arc-shaped surface. The inner corner of the reinforcing angle steel 1-2 forms a second arc-shaped surface. The curvature of the second arc-shaped surface is more than twice that of the first arc-shaped surface. The first and second arc-shaped surfaces enclose an anti-torsional cavity. The first arc-shaped surface is located at the intersection of the two first and second side plates and is part of the outer wall of the cylinder body of the first hydraulic cylinder 1-4-4 or the second hydraulic cylinder 1-8-2. Therefore, the first arc-shaped surface has sufficient resistance to deformation. Furthermore, because the curvature of the second arc-shaped surface is more than twice that of the first arc-shaped surface, the stress in the region where the first arc-shaped surface is located is less than that in the region where the second arc-shaped surface is located. This means that the structural strength of the region where the first arc-shaped surface is located is much greater than that of the region where the second arc-shaped surface is located. When the cross-shaped reinforcing beam 1-3 exhibits a torsional tendency due to the deformation of the original structural angle steel 1-1, the region where the second arc-shaped surface is located will show a deformation tendency, while the region where the first arc-shaped surface is located can provide sufficient strength. Since both side plates forming the first arc-shaped surface and the second side plate are connected to the cross-shaped reinforcing beam 1-3, deformation of the cross-shaped reinforcing beam 1-3 can be prevented from causing deformation of the original structural angle steel 1-1. Simultaneously, the anti-torsional cavity formed between the first and second arc-shaped surfaces can deform itself first when deformation occurs in the region of the reinforcing angle steel 1-2 where the second arc-shaped surface is located, thus buffering the problem of torsional deformation of the cross-shaped reinforcing beam 1-3 caused by the deformation of the reinforcing angle steel 1-2.

[0056] The present invention also provides a method for adjusting a grounding crossarm, which uses the above-mentioned grounding crossarm reinforcement and adjustment device, and includes the following steps:

[0057] S1: The four first L-shaped clamps 3-1 are respectively installed on the four free adjustment ends of the scissor-type telescopic frame 2 through the hinge structure. The two adjacent first L-shaped clamps 3-1 are fixed to the two adjacent original structural angle steels 1-1 with the corresponding second L-shaped clamps 3-2 by fasteners. Rotate the threaded adjustment rod 2-6 of the scissor-type telescopic frame 2 so that the other two adjacent first L-shaped clamps 3-1 abut against the other two original structural angle steels 1-1, and are fixed to the other two original structural angle steels 1-1 with the corresponding second L-shaped clamps 3-2 by fasteners.

[0058] S2: Rotate the four threaded connecting rods on the scissor-type telescopic frame 2 respectively, so that the four threaded connecting rods rotate outward to pre-tighten the four original structural angle steels 1-1;

[0059] S2: Four cross-shaped reinforcing beams 1-3 are installed on the back side of the four original structural angle steels 1-1 in the right-angle area. The third L-shaped clamping plate 1-9 and the fourth L-shaped clamping plate 1-10 at both ends of the inner angle side of the original structural angle steel 1-1 are connected to the cross-shaped reinforcing beams 1-3 by fasteners. Reinforcing angle steel is installed in the right-angle area of ​​the cross-shaped reinforcing beams 1-3 relative to the original structural angle steels 1-1. The first hydraulic cylinder 1-4-4, the telescopic adjusting rod and the second hydraulic cylinder 1-8-2 are installed in sequence, and the first hydraulic cylinder 1-4-4 and the second hydraulic cylinder 1-8-2 are installed on the reinforcing angle steel at both ends of the right-angle area.

[0060] S4: Rotate the rotating block 1-6 on the telescopic adjustment rod to move the first sleeve 1-5 and the second sleeve 1-7 away from each other to pre-tighten the cross reinforcement beam 1-3 in the length direction. The adjusting piston rod 1-8-3 in the third hydraulic cylinder moves along the length direction of the third hydraulic cylinder to adjust the oil pressure in the inner cavity of the second hydraulic cylinder 1-8-2, so as to change the damping force of the telescopic adjustment rod on the cross reinforcement beam 1-3.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grounding crossarm reinforcement and adjustment device, characterized in that, The device includes multiple connecting mechanisms that are installed one-to-one on multiple original structural angle steels of the crossarm and a support frame connected between the multiple connecting mechanisms. It also includes multiple reinforcement and vibration damping mechanisms that are installed one-to-one on multiple original structural angle steels of the crossarm. Each reinforcement and vibration damping mechanism includes a cross reinforcement beam and a vibration damping component. The cross reinforcement beam has four right-angled zones distributed in quadrants. The original structural angle steels and the vibration damping components are respectively installed in two opposite right-angled zones. The vibration damping component has damping along the length of the cross reinforcement beam. The connecting mechanism includes a first L-shaped clamp and a second L-shaped clamp. The first L-shaped clamp is mounted on the inner corner side of the original structural angle steel, and the second L-shaped clamp is mounted on the outer corner side of the original structural angle steel. The two free ends of the first L-shaped clamp and the two free ends of the second L-shaped clamp extend to the outer side of the original structural angle steel and are connected by fasteners. An inclined fixing plate is fixedly connected to the inner side of the first L-shaped clamp, and a base plate is fixed on the inclined fixing plate. The base plate is connected to the end of the support frame through a hinge structure. The support frame is a scissor-type telescopic frame. A threaded adjustment rod is installed in the middle hinge area of ​​the scissor-type telescopic frame. Each of the four freely adjustable ends of the scissor-type telescopic frame is provided with a threaded connecting rod. The end of the threaded connecting rod is connected to the chassis through the hinge structure. The threaded connecting rod can adjust the length of the threaded connecting rod extending out of the freely adjustable end by rotating itself. The original structural angle steel is further provided with a third L-shaped clamp and a fourth L-shaped clamp at both ends of the inner angle side. The third L-shaped clamp and the fourth L-shaped clamp extend to the outer side of the original structural angle steel and are connected to both ends of the cross-shaped reinforcing beam by fasteners. The vibration damping assembly includes a buffer damping component and a force adjustment component respectively disposed at both ends of the cross-shaped reinforcing beam. The buffer damping component and the force adjustment component are respectively fixed to the right-angle area of ​​the cross-shaped reinforcing beam by reinforcing angle steel. A telescopic adjustment rod is provided between the buffer damping component and the force adjustment component. The telescopic adjustment rod can adjust its length along the length direction of the cross-shaped reinforcing beam. The buffer damping component is used to provide damping of the telescopic adjustment rod along the length direction of the cross-shaped reinforcing beam, and the force adjustment component is used to adjust the damping magnitude of the telescopic adjustment rod along the length direction of the cross-shaped reinforcing beam.

2. The grounding crossarm reinforcement and adjustment device as described in claim 1, characterized in that, The telescopic adjustment rod includes a first sleeve, a second sleeve, and a rotating rod. The rotating rod has external threads on both sides with opposite directions of rotation. The first sleeve and the second sleeve both have internal threads. The first sleeve and the second sleeve are rotatably fitted on both sides of the rotating rod. A rotating block is provided in the middle of the rotating rod. The end of the first sleeve away from the rotating block is connected to the buffer and vibration damping component, and the end of the second sleeve away from the rotating block is connected to the force adjustment component.

3. The grounding crossarm reinforcement and adjustment device as described in claim 2, characterized in that, The buffer and vibration damping component includes a first hydraulic cylinder arranged along the length of the cross-shaped reinforcing beam. The two ends of the first hydraulic cylinder are respectively provided with first conformal end plates that conform to the right-angle area. Multiple stiffening ribs are arranged on the inner circumferential side of the first conformal end plates. The outer wall of the first hydraulic cylinder is provided with two first side plates extending tangentially. The two first side plates are arranged at 90° and are respectively connected to the two inner side walls of the right-angle area of ​​the cross-shaped reinforcing beam by fasteners. The two ends of the two first side plates are respectively fixedly connected to the two first conformal end plates. The first hydraulic cylinder is provided with a first piston rod. One end of the first piston rod that passes through the first hydraulic cylinder is threadedly connected to a first sleeve.

4. The grounding crossarm reinforcement and adjustment device as described in claim 3, characterized in that, The force adjustment component includes a second hydraulic cylinder arranged along the length of the cross-shaped reinforcing beam. The two ends of the second hydraulic cylinder are respectively provided with second conformal end plates that conform to the right-angle region. Multiple stiffening ribs are arranged circumferentially on the inner side of the second conformal end plates. The outer wall of the second hydraulic cylinder is provided with two second side plates extending tangentially. The two second side plates are arranged at 90° and are respectively connected to the two inner side walls of the right-angle region of the cross-shaped reinforcing beam by fasteners. The two ends of the two second side plates are respectively fixedly connected to the two second conformal end plates. A second piston rod is provided inside the second hydraulic cylinder. One end of the second piston rod protruding from the second hydraulic cylinder is threadedly connected to a second sleeve. A third hydraulic cylinder is provided on one side of the second hydraulic cylinder. The inner cavity of the third hydraulic cylinder communicates with the inner cavity of the second hydraulic cylinder. An adjusting piston rod is provided inside the third hydraulic cylinder. The adjusting piston rod moves along the length of the third hydraulic cylinder to adjust the oil pressure inside the second hydraulic cylinder.

5. The grounding crossarm reinforcement and adjustment device as described in claim 4, characterized in that, The intersection of the two first side plates and the intersection of the two second side plates both form a first arc-shaped surface, and the inner corner of the reinforcing angle steel forms a second arc-shaped surface. The curvature of the second arc-shaped surface is more than twice the curvature of the first arc-shaped surface. The first arc-shaped surface and the second arc-shaped surface enclose an anti-torsional cavity.

6. A method for adjusting a grounding crossarm, characterized in that, The grounding crossarm reinforcement and adjustment device as described in claim 5 includes the following steps: S1: The four first L-shaped clamps are respectively installed on the four free adjustment ends of the scissor-type telescopic frame through a hinge structure. The two adjacent first L-shaped clamps are fixed to the two adjacent original structural angle steels with fasteners in conjunction with the corresponding second L-shaped clamps. Rotate the threaded adjustment rod of the scissor-type telescopic frame so that the other two adjacent first L-shaped clamps abut against the other two original structural angle steels and are fixed to the other two original structural angle steels with fasteners in conjunction with the corresponding second L-shaped clamps. S2: Rotate the four threaded connecting rods on the scissor-type telescopic frame respectively, so that the four threaded connecting rods rotate outward to pre-tighten the four original structural angle steels; S2: Four cross-shaped reinforcing beams are installed on the back of the four original structural angle steels in the right-angle area. The third L-shaped clamp and the fourth L-shaped clamp at both ends of the inner angle of the original structural angle steel are connected to the cross-shaped reinforcing beams by fasteners. Reinforcing angle steels are installed in the right-angle area of ​​the cross-shaped reinforcing beams relative to the original structural angle steels. The first hydraulic cylinder, the telescopic adjustment rod and the second hydraulic cylinder are installed in sequence, and the first hydraulic cylinder and the second hydraulic cylinder are installed on the reinforcing angle steels at both ends of the right-angle area. S4: Rotate the rotating block on the telescopic adjustment rod to move the first sleeve and the second sleeve away from each other to pre-tighten the cross reinforcement beam in the length direction. The adjusting piston rod in the third hydraulic cylinder moves along the length direction of the third hydraulic cylinder to adjust the oil pressure in the inner cavity of the second hydraulic cylinder, so as to change the damping force of the telescopic adjustment rod on the cross reinforcement beam.

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