A power transmission tower dynamic vibration absorber suspension device

Abstract

The application discloses a power transmission tower dynamic vibration absorber suspension device, and relates to the field of power transmission tower vibration absorber installation. The device comprises a suspension frame, an angle adjusting mechanism and a plurality of auxiliary support mechanisms. The suspension frame is detachably fixed on the tower body main material of the power transmission tower through a plurality of tower embracing assemblies, and the bottom of the suspension frame is circumferentially provided with a plurality of connecting parts for connecting the suspension ropes of the vibration absorber. The plurality of tower embracing assemblies are detachably connected with the main material of the power transmission tower, and the plurality of auxiliary support mechanisms are obliquely connected from the bottom of the suspension frame to the main material below the tower body, so that the gravity and vibration impact force of the vibration absorber are effectively dispersed, local stress concentration is avoided, and the bearing capacity and fatigue resistance of the whole suspension system are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of vibration absorber installation for power transmission towers, and specifically relates to a suspension device for a dynamic vibration absorber for power transmission towers. Background Technology

[0002] In high-voltage transmission line systems, transmission towers, as key structures supporting conductors and ground wires, are exposed to complex and ever-changing natural environments for extended periods. They are susceptible to dynamic excitations such as wind loads and conductor galloping, which can trigger structural vibrations. Continuous or severe vibrations not only accelerate fatigue damage to the tower materials but can also affect the safe and stable operation of the transmission line, and in severe cases, even lead to tower collapse accidents.

[0003] To suppress such vibrations, dynamic vibration absorbers are often used in engineering practice for vibration control. Dynamic vibration absorbers utilize their mass blocks to generate motion in the opposite direction to the main structure under inertia, thereby effectively counteracting the vibration response of the power transmission tower and improving the overall structure's wind and earthquake resistance.

[0004] The current suspension system typically involves first prefabricating a support frame on the ground, then fixing it to the main structure of the transmission tower by welding or high-strength bolts. Finally, the suspension ropes of the vibration absorber are connected to the support frame, and the vibration absorber is suspended below the support frame.

[0005] Because the vibration absorber is large and heavy, and the on-site fabricated support frame is only connected to the main tower material by local welding or bolts, there are few support points and the stress is concentrated. Under long-term dynamic load, the frame is prone to stress concentration, and the strength of the connection parts is insufficient to withstand the weight of the vibration absorber and the vibration impact force, which can easily lead to deformation, loosening or even breakage, and thus cannot provide stable and reliable suspension support for the vibration absorber.

[0006] Therefore, we propose a power transmission tower dynamic vibration absorber suspension device to solve the above problems. Summary of the Invention

[0007] In view of the problems of the suspension devices currently used, under long-term dynamic load, the frame is prone to stress concentration, and the strength of the connection parts is not enough to withstand the weight and vibration impact of the vibration absorber, which can easily lead to deformation, loosening or even breakage, and cannot provide stable and reliable suspension support for the vibration absorber. The present invention provides a suspension device for a power transmission tower dynamic vibration absorber.

[0008] The solution adopted by the present invention to solve its technical problem is: a power transmission tower dynamic vibration absorber suspension device, including a suspension frame, an angle adjustment mechanism and multiple sets of auxiliary support mechanisms. The suspension frame is detachably fixed to the main body of the transmission tower through multiple sets of tower clamping components, and the bottom of the suspension frame is provided with multiple connecting parts for connecting the vibration absorber suspension rope in the circumferential direction. Multiple sets of the auxiliary support mechanisms are distributed circumferentially along the bottom of the suspension frame. Each auxiliary support mechanism includes a support arm and an installation assembly for connecting the main material of the transmission tower. The upper end of the support arm is hinged to the bottom of the suspension frame, and its lower end is rotatably connected to the installation assembly. The angle adjustment mechanism includes an adjustment component and multiple tie rods. The adjustment component is vertically installed in the central area of ​​the suspension frame. Each of the multiple tie rods corresponds to one of the multiple support arms. The two ends of the tie rods are respectively hinged to the bottom ends of the support arms and the adjustment component.

[0009] Preferably, the tower clamp assembly includes a high-strength screw and a high-strength bolt. One end of the high-strength screw passes through a through hole in the suspension frame and extends to the outside of the suspension frame. A U-shaped clamp is fixedly connected to its outer end. Two locking nuts are threaded onto the high-strength screw, and the two locking nuts abut against the outer and inner sides of the suspension frame, respectively. The top and bottom walls of the U-shaped clamp are provided with aligned bolt holes, and the high-strength bolts are inserted into the bolt holes to fasten the U-shaped clamp to the main structure of the power transmission tower.

[0010] Preferably, multiple ribs are welded and fixed between the high-strength screw and the U-shaped clamp.

[0011] Preferably, a cross is fixedly connected inside the suspension frame.

[0012] Preferably, the mounting assembly includes a connecting plate and two U-bolts. A lower hinge seat is fixedly connected to one side of the connecting plate, which has four through holes. The two ends of the U-bolts pass through two corresponding through holes and are connected to fastening nuts, thereby fixing the connecting plate to the main body of the transmission tower. The lower end of the support arm is hinged in the lower hinge seat by a pin.

[0013] Preferably, a mounting plate is fixedly installed on the side of the connecting plate facing the vibration absorber, and a shock-absorbing rubber pad is fixedly installed on the side of the mounting plate facing the vibration absorber.

[0014] Preferably, the adjusting assembly includes a connecting plate, an adjusting screw, and a fixing nut. The fixing nut is fixed to the center of the cross. The adjusting screw is threadedly engaged with the fixing nut. The upper end of the adjusting screw is provided with a rotating disk, and the lower end is fitted with a bearing. The bearing is fixedly installed at the center of the connecting plate. The connecting plate has four grooves around its perimeter, and the lower end of the pull rod is hinged to the grooves.

[0015] Preferably, the connecting part is a hook.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses multiple sets of tower clamping components to be detachably connected to the main material of the transmission tower. At the same time, multiple auxiliary support mechanisms are obliquely connected from the bottom of the suspension frame to the main material below the tower body, which effectively disperses the gravity of the vibration absorber and the vibration impact force, avoids local stress concentration, and greatly improves the load-bearing capacity and fatigue resistance of the entire suspension system.

[0017] 2. This invention, through the cooperation of a high-strength screw and double locking nuts, can finely adjust the installation position of the U-shaped clamp relative to the main tower material, effectively compensating for the actual size deviation of the tower and on-site installation errors, ensuring that the U-shaped clamp can fit the contour of the main tower material, providing convenience for the insertion and tightening of high-strength bolts, avoiding installation obstruction caused by alignment deviation, and greatly reducing the difficulty of construction operations.

[0018] 3. This invention drives the connecting plate to rise by rotating the adjusting screw, thereby simultaneously pulling multiple tie rods to achieve the synchronous deployment of multiple support arms. This ensures that the four connecting plates can simultaneously contact the main material of the power transmission tower, eliminating the need to adjust each support arm individually, simplifying the installation process and improving installation efficiency.

[0019] 4. This invention, by setting four collapsible support arms and an adjustable U-shaped clamp, makes it convenient for workers to carry the device into the power transmission tower for installation.

[0020] 5. By setting up shock-absorbing rubber pads, this invention can provide flexible buffering when the vibration absorber swings significantly, preventing the vibration absorber from directly colliding with the tower body, further reducing impact damage to the main material of the transmission tower, and protecting the transmission tower. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view of the structure of the present invention in its installed state.

[0022] In the diagram: 1. Suspension bracket, 21. High-strength screw, 22. Rib plate, 23. U-shaped clamp, 24. High-strength bolt, 25. Locking nut, 3. Cross, 41. Adjusting screw, 42. Fixing nut, 43. Rotary disc, 44. Connecting disc, 45. Tie rod, 51. Support arm, 52. Upper hinge seat, 53. Connecting plate, 54. U-shaped bolt, 55. Lower hinge seat, 61. Mounting plate, 62. Shock-absorbing rubber pad, 7. Hanging lug, 8. Vibration absorber, 9. Transmission line tower. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figure 1-2 This invention provides a technical solution for a power transmission tower dynamic vibration absorber suspension device: Example 1: according to Figure 1 and Figure 2 As shown, it includes a suspension frame 1, an angle adjustment mechanism, and multiple sets of auxiliary support mechanisms. A cross 3 is fixedly connected inside the suspension frame 1, which can significantly improve the overall structural strength and deformation resistance of the suspension frame 1. The bottom of the suspension frame 1 is provided with eight connecting parts in the circumferential direction. In this embodiment, the connecting part is a hanging ear 7, which is used to connect with the suspension rope of the vibration absorber 8.

[0025] The suspension frame 1 is detachably fixed to the main body of the transmission tower 9 by multiple sets of tower clamping components. In this embodiment, there are four sets of tower clamping components, which are evenly distributed around the suspension frame 1.

[0026] The tower clamp assembly includes a high-strength screw 21 and a high-strength bolt 24. One end of the high-strength screw 21 passes through a through hole in the suspension frame 1 and extends to the outside of the suspension frame 1. A U-shaped clamp 23 is fixedly connected to its outer end. Multiple ribs 22 are welded and fixed between the high-strength screw 21 and the U-shaped clamp 23. The ribs 22 are made of high-strength steel plate, which can effectively improve the connection strength between the high-strength screw 21 and the U-shaped clamp 23 and avoid deformation or breakage at the connection under long-term stress.

[0027] The high-strength screw 21 has two locking nuts 25 threaded connections. The two locking nuts 25 abut against the outer and inner sides of the suspension frame 1, respectively. The locking structure of the double locking nuts 25 achieves a stable connection between the high-strength screw 21 and the suspension frame 1. The installation position of the U-shaped clamp 23 relative to the main tower material can be finely adjusted, effectively compensating for the actual size deviation of the tower and the on-site installation error, and ensuring that the U-shaped clamp 23 can fit the contour of the main tower material.

[0028] The top and bottom walls of the U-shaped clamp 23 are provided with aligned bolt holes, and high-strength bolts 24 are inserted into the bolt holes to fasten the U-shaped clamp 23 to the main material of the transmission tower 9.

[0029] In this embodiment, there are four sets of auxiliary support mechanisms. The four sets of auxiliary support mechanisms are distributed circumferentially along the bottom of the suspension frame 1. The auxiliary support mechanism includes a support arm 51 and an installation component for connecting the main material of the transmission tower 9. The auxiliary support mechanism is detachably connected to the main material of the transmission tower 9 through multiple sets of tower clamping components. At the same time, multiple auxiliary support mechanisms are obliquely connected from the bottom of the suspension frame 1 to the main material below the tower body, which effectively disperses the gravity and vibration impact force of the vibration absorber 8, avoids local stress concentration, and greatly improves the load-bearing capacity and fatigue resistance of the entire suspension system.

[0030] The mounting assembly includes a connecting plate 53 and two U-bolts 54. A lower hinge seat 55 is fixedly connected to one side of the connecting plate 53, and four through holes are provided on it. The two ends of the U-bolts 54 pass through two corresponding through holes and are connected with fastening nuts, thereby fixing the connecting plate 53 to the main body of the transmission tower 9. The upper and lower ends of the support arm 51 are respectively connected to the upper hinge seat 52 and the lower hinge seat 55 through a pin. The upper hinge seat 52 is fixedly connected to the bottom of the suspension frame 1.

[0031] The angle adjustment mechanism includes an adjustment component and multiple pull rods 45. In this embodiment, there are four pull rods 45. The adjustment component includes an adjustment screw 41 and a fixing nut 42. The fixing nut 42 is fixed to the center of the cross 3. The adjustment screw 41 and the fixing nut 42 are threaded together. The upper end of the adjustment screw 41 is provided with a rotating disk 43, and the lower end is fitted with a bearing. The bearing is fixedly installed at the center of the connecting disk 44. By operating the rotating disk 43, the adjustment screw 41 is driven to rotate. Under the action of the bearing, the connecting disk 44 is driven to move up and down.

[0032] The connecting plate 44 has four grooves around its perimeter, and four pull rods 45 correspond one-to-one with the four support arms 51. The two ends of the pull rods 45 are hinged to the support arms 51 and the grooves respectively through pins. By adjusting the rotation of the screw 41, the connecting plate 44 is driven to rise, thereby simultaneously pulling multiple pull rods 45 and realizing the synchronous unfolding of multiple support arms 51. This ensures that the four connecting plates 53 can contact the main material of the power transmission tower 9 at the same time, eliminating the need to adjust each support arm 51 individually, simplifying the installation process and improving installation efficiency.

[0033] In practical use, the suspension device for the power vibration absorber of the transmission tower of the present invention first raises the suspension frame 1 to a specified height, and then attaches the four U-shaped clips 23 to the outer contour of the main material of the transmission tower 9. Next, the nuts on the high-strength screws 21 are tightened one by one to achieve a stable connection between the high-strength screws 21 and the suspension frame 1. Then, the high-strength bolts 24 are inserted through the bolt holes on the top and bottom walls of the U-shaped clips 23 and tightened to ensure that the U-shaped clips 23 are stably fixed on the main material of the transmission tower 9. After the suspension frame 1 is fixed and secure, the operating rotary disk 43 drives the adjustment screw 41 to rotate. The adjustment screw 41 rotates upward, driving the connecting disk 44 to rise through the bearing. At this time, the four tie rods 45 pull the corresponding four support arms 51 in sync, causing each support arm 51 to unfold outward until all connecting plates 53 are in contact with the main material of the tower body. Then, the two ends of the U-bolt 54 are passed through two corresponding through holes and connected with fastening nuts, fixing multiple connecting plates 53 to the main material of the transmission tower 9 respectively. Finally, the multiple suspension ropes of the shock absorber 8 are connected to the eight lugs 7 at the bottom of the suspension frame 1.

[0034] Example 2: Based on Embodiment 1, as shown in the figure, a mounting plate 61 is fixedly installed on the side of the connecting plate 53 facing the vibration absorber 8, and a shock-absorbing rubber pad 62 is fixedly installed on the side of the mounting plate 61 facing the vibration absorber 8. By setting the shock-absorbing rubber pad 62, a flexible buffer can be provided when the vibration absorber 8 swings significantly, so as to avoid the vibration absorber 8 directly colliding with the tower body, further reducing the impact damage to the main material of the transmission tower 9, and playing a protective role for the transmission tower 9.

Claims

1. A power transmission tower dynamic vibration absorber suspension device, comprising a suspension frame, an angle adjusting mechanism and a plurality of sets of auxiliary support mechanisms, characterized in that: The suspension frame is detachably fixed to the main body of the transmission tower via multiple sets of tower clamping components, and the bottom of the suspension frame is provided with multiple connecting parts for connecting the suspension ropes of the vibration absorber. Multiple sets of the auxiliary support mechanisms are distributed circumferentially along the bottom of the suspension frame. Each auxiliary support mechanism includes a support arm and an installation assembly for connecting the main material of the transmission tower. The upper end of the support arm is hinged to the bottom of the suspension frame, and its lower end is rotatably connected to the installation assembly. The angle adjustment mechanism includes an adjustment component and multiple tie rods. The adjustment component is vertically installed in the central area of ​​the suspension frame. Each of the multiple tie rods corresponds to one of the multiple support arms. The two ends of the tie rods are respectively hinged to the bottom ends of the support arms and the adjustment component.

2. The power transmission tower dynamic vibration absorber suspension device according to claim 1, characterized in that: The tower clamp assembly includes a high-strength screw and a high-strength bolt. One end of the high-strength screw passes through a through hole in the suspension frame and extends to the outside of the suspension frame. A U-shaped clamp is fixedly connected to its outer end. Two locking nuts are threaded onto the high-strength screw, and the two locking nuts abut against the outer and inner sides of the suspension frame, respectively. The top and bottom walls of the U-shaped clamp are provided with aligned bolt holes, and the high-strength bolts are inserted into the bolt holes to fasten the U-shaped clamp to the main structure of the power transmission tower.

3. The power transmission tower dynamic vibration absorber suspension device according to claim 2, characterized in that: Multiple ribs are welded and fixed between the high-strength screw and the U-shaped clamp.

4. The power transmission tower dynamic vibration absorber suspension device according to claim 1, characterized in that: A cross is fixedly connected inside the suspension frame.

5. The power transmission tower dynamic vibration absorber suspension device according to claim 1, characterized in that: The installation assembly includes a connecting plate and two U-bolts. A lower hinge seat is fixedly connected to one side of the connecting plate, which has four through holes. The two ends of the U-bolts pass through two corresponding through holes and are connected to fastening nuts, thus fixing the connecting plate to the main body of the transmission tower. The lower end of the support arm is hinged in the lower hinge seat by a pin.

6. The power transmission tower dynamic vibration absorber suspension device according to claim 5, characterized in that: A mounting plate is fixedly installed on the side of the connecting plate facing the vibration absorber, and a shock-absorbing rubber pad is fixedly installed on the side of the mounting plate facing the vibration absorber.

7. The power transmission tower dynamic vibration absorber suspension device according to claim 4, characterized in that: The adjustment assembly includes a connecting plate, an adjusting screw, and a fixing nut. The fixing nut is fixed to the center of the cross. The adjusting screw is threadedly engaged with the fixing nut. The upper end of the adjusting screw is provided with a rotating disk, and the lower end is fitted with a bearing. The bearing is fixedly installed at the center of the connecting plate. The connecting plate has four grooves around it, and the lower end of the pull rod is hinged to the grooves.

8. The power transmission tower dynamic vibration absorber suspension device according to claim 1, characterized in that: The connecting part is a hook.

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