Explosion blast protection device for high-voltage line towers

Abstract

The application relates to the technical field of mine blasting safety, and discloses a blasting shock wave protection device for a high-voltage line tower, which comprises a machine box and a viscous oil damper, a ball hinge I is arranged at the bottom end of the machine box, a base is arranged at the bottom end of the ball hinge I, a lead screw is rotationally arranged in the machine box, a driving mechanism for driving the lead screw to rotate is arranged at the bottom of one side of the machine box, a lifting support is slidably connected to the top end of the machine box, and the bottom end of the lifting support is threadedly connected with the lead screw. Through the cooperation of the viscous oil damper and the compression spring, the vibration energy of the blasting shock wave transmitted to the tower leg is effectively weakened through damping dissipation and spring energy storage and release, the instantaneous impact effect of the impact load on the tower leg is directly reduced from the mechanical aspect, the anti-vibration capacity of the tower leg is remarkably improved, meanwhile, through the cooperation of the driving mechanism, the lead screw and the lifting support, multi-stage accurate adjustment of the overall length of the device is realized.

Description

Technical Field

[0001] This invention relates to the field of mine blasting safety technology, specifically to a blast shock wave protection device for high-voltage power line towers. Background Technology

[0002] In mining operations, the shock waves and seismic waves generated by frequent blasting will continuously act on the nearby high-voltage tower structure, causing tower vibration, uneven foundation settlement and fatigue damage to key members. The long-term cumulative effect may lead to the yielding of the main tower leg or deformation of the crossarm, eventually causing tower collapse accidents, resulting in significant economic losses and social impact.

[0003] Existing protective measures mainly include passive protection methods such as covering the blasting area with "blast blankets" to suppress flying rocks, erecting protective frames around high-voltage towers to intercept flying rocks, and setting up anti-collision fences at the tower base. However, these physical protection devices are mainly for direct impact from flying rocks and lack effective temporary reinforcement capabilities for blasting vibration energy transmitted through the foundation. Although there is some research on prefabricated and detachable transmission tower reinforcement devices, their designs are mostly aimed at long-term reinforcement needs under fixed working conditions, making it difficult to quickly respond to the temporary characteristics of blasting operations, and they lack length adjustment functions to adapt to different tower leg sizes and terrain conditions.

[0004] Therefore, there is an urgent need for a temporary reinforcement device for high-voltage towers that can be quickly installed, easily disassembled and recycled, and has adjustable length, in order to specifically enhance the vibration resistance of the tower leg structure during blasting and make up for the shortcomings of existing passive protection methods in vibration control. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a blast shock wave protection device for high-voltage power line towers, which has the advantages of quick installation and easy disassembly and recycling, thus solving the problems mentioned in the background art.

[0006] This invention provides the following technical solution: a blast shock wave protection device for high-voltage power line towers, comprising a chassis and a viscous oil damper. A ball joint is installed at the bottom of the chassis, and a base is installed at the bottom of the ball joint. A lead screw is rotatably mounted inside the chassis. A drive mechanism for rotating the lead screw is provided on the bottom side of the chassis. A lifting bracket is slidably connected to the top of the chassis, and the bottom of the lifting bracket is threadedly connected to the lead screw. The bottom of the viscous oil damper is fixedly connected to the top of the lifting bracket. A compression spring is sleeved on the piston rod surface of the viscous oil damper. An adjustment mechanism for adjusting the preload of the compression spring is provided at the top of the cylinder liner of the viscous oil damper. A ball joint is installed at the top of the piston rod of the viscous oil damper, and an installation mechanism is provided at the top of the ball joint.

[0007] As a preferred embodiment of the present invention, the drive mechanism includes a support sleeve, which is fixedly connected to the bottom of one side of the chassis. A rotating shaft is rotatably connected inside the support sleeve via a bearing. One end of the rotating shaft is fixedly provided with a driving helical gear, which meshes with a driven helical gear. The driven helical gear is fixedly connected to the bottom of a lead screw. A disc is provided on one side of the rotating shaft, located outside the chassis. A number of limiting grooves are provided on the surface of the disc and are evenly distributed along the circumference of the disc. A wrench position is provided at the other end of the rotating shaft. A limiting component for limiting the disc is provided on the top of the disc.

[0008] As a preferred embodiment of the present invention, the limiting component includes a support plate, one side of which is fixedly connected to the bottom of the chassis, and both sides of the bottom end of the support plate are fixedly provided with reinforcing ribs, and the top end of the support plate is threadedly connected with a limiting screw corresponding to the limiting groove.

[0009] As a preferred embodiment of the present invention, the adjusting mechanism includes a support ring, which is sleeved on the top of the cylinder liner of the viscous oil damper and located at the bottom end of the compression spring. Both sides of the support ring are fixedly provided with protruding plates, and the bottom end of each protruding plate is fixedly provided with a screw. A support block is slidably connected to the surface of the screw. One side of the support block is fixedly connected to the cylinder liner of the viscous oil damper. The top and bottom ends of the support block are each provided with adjusting nuts threadedly connected to the screw, and a wedge-shaped washer is provided between the adjusting nut and the support block.

[0010] As a preferred embodiment of the present invention, a guide post is fixedly provided at the top of the convex plate, a sliding sleeve is slidably connected to the surface of the guide post, a connecting frame is fixedly provided on the surface of the sliding sleeve, a support is fixedly provided at the top of the connecting frame, a tray is fixedly provided at the top of the piston rod of the viscous oil damper, one side of the support is fixedly connected to the tray, the compression spring is located at the bottom of the tray, and the bottom of the ball joint is fixedly connected to the top of the tray by screws.

[0011] As a preferred embodiment of the present invention, the mounting mechanism includes a mounting base. The bottom end of the mounting base is fixedly connected to the top end of the ball joint II by screws. A first sleeve is fixedly provided on one side of the mounting base, and a second sleeve is provided on one side of the first sleeve. Rubber pads are fixedly provided on the inner walls of both the first and second sleeves. Fastening plates are fixedly provided on both sides of the first sleeve and on both sides of the second sleeve. The fastening plates are fixedly connected to the fastening plates by bolts, and bolt holes for bolt insertion are provided on the surfaces of both the second and first fastening plates.

[0012] As a preferred embodiment of the present invention, the bottom of the lifting bracket is fixedly provided with a slide block, the middle of the slide block is provided with a threaded sleeve that is threadedly connected to the lead screw, the bottom end of the lead screw is rotatably connected to the inner wall of the bottom of the housing through a bearing, the top end of the lead screw is rotatably connected to the inner wall of the top of the housing through a bearing, a sliding groove is provided in the middle of both sides of the slide block, a vertically arranged guide rail is fixedly provided in the inner wall of both sides of the housing, the slide block is slidably connected to the guide rail through the sliding groove, a smooth rod is fixedly provided in both sides of the top of the slide block, the smooth rod is slidably connected to the top of the housing, a support plate is provided in the top of the housing, the bottom two sides of the support plate are respectively fixedly connected to the top of the two smooth rods, a gasket is fixedly provided in the bottom of the cylinder liner of the viscous oil damper, the bottom end of the gasket is fixedly connected to the middle of the top of the support plate through screws, an inspection port is provided on the front of the housing, and a cover is fixedly installed on one side of the inspection port through screws.

[0013] As a preferred embodiment of the present invention, a support column is fixedly provided in the middle of the bottom of the chassis, the top end of the ball joint is fixedly connected to the bottom end of the support column by bolts, a base is fixedly installed at the bottom end of the ball joint by bolts, a stiffening plate for reinforcing it is welded on the surface of the base, and a mounting hole is provided at the bottom end of the base.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The blast shock wave protection device for this high-voltage power line tower, through the coordinated operation of a viscous oil damper and a compression spring, effectively weakens the vibration energy transmitted to the tower legs by blast impact through damping dissipation and spring energy release. From a mechanical perspective, it directly reduces the instantaneous impact effect of the impact load on the tower legs, significantly improving the vibration resistance of the tower legs. At the same time, through the cooperation of the drive mechanism, lead screw and lifting support, the overall length of the device can be precisely adjusted in multiple stages, which can flexibly adapt to different spatial dimensions between different tower legs and the tower base, and meet the installation requirements of different types of high-voltage power line towers and different terrain conditions. In addition, by adjusting the preload of the compression spring through the adjustment mechanism, the stiffness and damping characteristics of the device can be flexibly adjusted according to different blast intensity conditions, so that the device can maintain the best vibration reduction effect under different impact energy conditions.

[0016] 2. The blast shock wave protection device for this high-voltage power line tower, through a jacket-type installation mechanism and a detachable base connection structure, enables rapid installation and disassembly between the tower legs and the tower base. It can be quickly dismantled and recycled after blasting operations, achieving recycling and reducing usage costs. It is particularly suitable for temporary and periodic reinforcement scenarios such as mining blasting. At the same time, the ball joint structure set at both ends can effectively adapt to the angular deviation between the tower legs and the tower base caused by terrain or installation, avoiding additional bending moments, ensuring the rationality of the force transmission path, improving installation convenience and service life. In addition, the limiting component can prevent the lead screw from loosening due to blasting vibration, ensuring length stability under working conditions. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of the present invention;

[0018] Figure 2 This is the second structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the chassis of the present invention;

[0020] Figure 4 This is a schematic diagram of the drive mechanism of the present invention;

[0021] Figure 5 This is a schematic diagram of the viscous oil damper of the present invention;

[0022] Figure 6 This is a schematic diagram of the compression spring of the present invention;

[0023] Figure 7 This is a schematic diagram of the adjustment mechanism of the present invention;

[0024] Figure 8 This is a schematic diagram of the installation mechanism of the present invention.

[0025] In the diagram: 1. Chassis; 2. Lead screw; 3. Drive mechanism; 301. Support sleeve; 302. Rotating shaft; 303. Driving helical gear; 304. Driven helical gear; 305. Disc; 306. Limiting groove; 307. Wrench position; 308. Limiting assembly; 3081. Support plate; 3082. Rib plate; 3083. Limiting screw; 4. Lifting bracket; 5. Ball joint 1; 6. Base; 7. Viscous oil damper; 8. Guide rail; 9. Adjusting mechanism; 901. Support ring; 902. Protruding plate; 903. Screw. ; 904, Support block; 905, Adjusting nut; 906, Guide post; 907, Sliding sleeve; 908, Connecting frame; 909, Support; 10, Compression spring; 11, Tray; 12, Washer; 13, Ball joint II; 14, Mounting mechanism; 1401, Mounting seat; 1402, Clip I; 1403, Clip II; 1404, Fastening plate I; 1405, Fastening plate II; 1406, Rubber pad; 15, Support column; 16, Box cover; 17, Sliding block; 18, Threaded sleeve; 19, Polished rod; 20, Support plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1-8 The blast shock wave protection device for high-voltage power line towers includes a housing 1 and a viscous oil damper 7. A ball joint 5 is installed at the bottom of the housing 1, and a base 6 is installed at the bottom of the ball joint 5. Specifically, a support column 15 is fixedly installed in the middle of the bottom of the housing 1. The top of the ball joint 5 is fixedly connected to the bottom of the support column 15 by bolts. The base 6 is fixedly installed at the bottom of the ball joint 5 by bolts. A stiffening plate for reinforcement is welded to the surface of the base 6. An installation hole is opened at the bottom of the base 6. The base 6 can be fixed to the tower base platform by anchor bolts. The ball joint 5 can adapt to the angle deviation during installation and avoid generating additional bending moment.

[0028] Inside the housing 1, a lead screw 2 is rotatably mounted. The bottom end of the lead screw 2 is rotatably connected to the inner wall of the bottom of the housing 1 via a bearing, and the top end of the lead screw 2 is rotatably connected to the inner wall of the top of the housing 1 via a bearing. A drive mechanism 3 for driving the lead screw 2 to rotate is provided on the bottom side of the housing 1. A lifting bracket 4 is slidably connected to the top of the housing 1. The bottom end of the lifting bracket 4 is threadedly connected to the lead screw 2. When the lead screw 2 rotates, the lifting bracket 4 moves up and down along the axial direction of the lead screw 2 to adjust the length of the device.

[0029] The bottom end of the viscous oil damper 7 is fixedly connected to the top end of the lifting bracket 4. A compression spring 10 is sleeved on the surface of the piston rod of the viscous oil damper 7. The top of the cylinder liner of the viscous oil damper 7 is provided with an adjustment mechanism 9 for adjusting the preload of the compression spring 10. A ball joint 13 is installed at the top end of the piston rod of the viscous oil damper 7. The top end of the ball joint 13 is provided with an installation mechanism 14. The installation mechanism 14 is used to fix the upper end of the device to the main material of the tower leg of the high-voltage tower. When the blast shock wave is transmitted to the tower leg, the vibration energy The energy is transmitted through the mounting mechanism 14 and the ball joint 13 to the piston rod of the viscous oil damper 7. The piston rod moves relative to the cylinder liner. The viscous oil damper 7 dissipates part of the vibration energy through viscous fluid damping. At the same time, the compression spring 10 provides elastic restoring force. The two work together to effectively weaken the instantaneous impact effect of the impact load on the tower leg. The drive mechanism 3 drives the lead screw 2 to rotate, which drives the lifting bracket 4 to rise and fall along the machine box 1, realizing multi-level adjustment of the overall length of the device to adapt to different spatial dimensions between the tower leg and the tower base.

[0030] In this embodiment, preferably, the drive mechanism 3 includes a support sleeve 301, which is fixedly connected to the bottom of one side of the housing 1. A rotating shaft 302 is rotatably connected inside the support sleeve 301 via a bearing. One end of the rotating shaft 302 is fixedly provided with a driving helical gear 303, which meshes with a driven helical gear 304. The driven helical gear 304 is fixedly connected to the bottom of the lead screw 2. A disc 305 is provided on one side of the rotating shaft 302, located outside the housing 1. The surface of the disc 305... A limiting groove 306 is provided on the surface, and several limiting grooves 306 are provided and evenly distributed along the circumference of the disc 305. The other end of the rotating shaft 302 is provided with a wrench position 307. The rotating shaft 302 is rotated through the wrench position 307. The rotating shaft 302 can drive the lead screw 2 to rotate through the driving helical gear 303 and the driven helical gear 304. The top of the disc 305 is provided with a limiting component 308 for limiting it. It can limit it after the disc 305 is rotated, preventing the lead screw 2 from retracting, which is safe and reliable.

[0031] The limiting component 308 includes a support plate 3081. One side of the support plate 3081 is fixedly connected to the bottom of one side of the chassis 1. Ribs 3082 are fixedly provided on both sides of the bottom end of the support plate 3081. The ribs 3082 improve the strength and deformation resistance of the support plate 3081. The top of the support plate 3081 is threadedly connected to a limiting screw 3083 corresponding to the limiting groove 306. After the lifting adjustment is completed, tighten the limiting screw 3083 so that it is inserted into the corresponding limiting groove 306 on the disc 305, thereby locking the rotating shaft 302 and ensuring that the length of the device remains stable in the working state.

[0032] In this embodiment, preferably, the adjusting mechanism 9 includes a support ring 901, which is sleeved on the top of the cylinder liner of the viscous oil damper 7 to ensure the linear movement of the support ring 901. The support ring 901 is located at the bottom end of the compression spring 10 and can limit the bottom end of the compression spring 10. Both sides of the support ring 901 are fixedly provided with protruding plates 902, and the bottom end of the protruding plates 902 is fixedly provided with a screw 903. The surface of the screw 903 is slidably connected with a support block 904. One side of the support block 904 is fixedly connected to the cylinder liner of the viscous oil damper 7, so that the pressure can be transmitted to the cylinder liner of the viscous oil damper 7.

[0033] The top and bottom ends of the support block 904 are provided with adjusting nuts 905 that are threadedly connected to the screw 903. A wedge-shaped washer is provided between the adjusting nut 905 and the support block 904. By rotating the adjusting nut 905, the position of the support ring 901 relative to the support block 904 can be changed, thereby adjusting the preload of the compression spring 10 to adapt to different intensity of explosive impact conditions. The wedge-shaped washer can prevent the adjusting nut 905 from loosening in the vibration environment.

[0034] A guide post 906 is fixedly provided at the top of the convex plate 902. A sliding sleeve 907 is slidably connected to the surface of the guide post 906. A connecting frame 908 is fixedly provided on the surface of the sliding sleeve 907. A support 909 is fixedly provided at the top of the connecting frame 908. A tray 11 is fixedly provided at the top of the piston rod of the viscous oil damper 7. One side of the support 909 is fixedly connected to the tray 11. A compression spring 10 is located at the bottom of the tray 11. The compression spring 10 can provide support between the support ring 901 and the tray 11. The bottom of the ball joint 13 is fixedly connected to the top of the tray 11 by screws. The guide post 906 and the sliding sleeve 907 form a guide structure to ensure that the compression spring 10 moves axially during compression and reset, avoids lateral displacement, and ensures stable transmission of spring force.

[0035] In this embodiment, preferably, the installation mechanism 14 includes a mounting base 1401. The bottom end of the mounting base 1401 is fixedly connected to the top end of the ball joint 13 by screws. The screws facilitate installation and disassembly. A first sleeve 1402 is fixedly provided on one side of the mounting base 1401, and a second sleeve 1403 is provided on one side of the first sleeve 1402. Rubber pads 1406 are fixedly provided on the inner walls of both the first sleeve 1402 and the second sleeve 1403. By fitting the first sleeve 1402 and the second sleeve 1403 onto the tower leg of the high-voltage line tower, the device can support and reinforce the tower leg of the high-voltage line tower. The rubber pads 1406 can increase the fit and stability between the first sleeve 1402 and the second sleeve 1403 and the tower leg.

[0036] Both sides of the first jacket 1402 are fixed with fastening plates 1404, and both sides of the second jacket 1403 are fixed with fastening plates 1405. The second fastening plates 1405 are fixedly connected to the first fastening plates 1404 by bolts. Both the surface of the second fastening plates 1405 and the surface of the first fastening plates 1404 are provided with bolt holes for bolt insertion. By passing the bolts through the through holes of the first fastening plates 1404 and the second fastening plates 1405, the first jacket 1402 and the second jacket 1403 can be fixed to the tower leg and can be removed from the tower leg after use.

[0037] In this embodiment, preferably, the bottom of the lifting bracket 4 is fixedly provided with a slide block 17, the middle part of the slide block 17 is provided with a threaded sleeve 18 that is threadedly connected to the lead screw 2, and the middle parts of both sides of the slide block 17 are provided with sliding grooves. The inner walls of both sides of the housing 1 are fixedly provided with vertically arranged guide rails 8. The slide block 17 is slidably connected to the guide rails 8 through the sliding grooves. When the lead screw 2 rotates, the rotational motion can be converted into the linear motion of the slide block 17 through the threaded sleeve 18. The guide rails 8 and the sliding grooves can guide the slide block 17 and prevent the slide block 17 from tilting.

[0038] Both sides of the top of the slide block 17 are fixedly provided with light rods 19. The light rods 19 are slidably connected to the top of the housing 1. When the slide block 17 is raised and lowered, the viscous oil damper 7 can be raised and lowered through the light rods 19 and the support plate 20. The top of the housing 1 is provided with a support plate 20. The two sides of the bottom end of the support plate 20 are fixedly connected to the top of the two light rods 19 respectively. The bottom end of the cylinder liner of the viscous oil damper 7 is fixedly provided with a gasket 12. The bottom end of the gasket 12 is fixedly connected to the middle of the top of the support plate 20 by screws. The viscous oil damper 7 can be installed and removed. The front of the housing 1 is provided with an inspection port. One side of the inspection port is fixedly installed with a cover 16 by screws. By loosening the screws and opening the cover 16, the internal maintenance of the housing 1 can be carried out through the inspection port.

[0039] During use, the overall length of the device is adjusted according to the actual space between the tower legs and the tower base. The operator uses a wrench to engage the wrench position 307 at the end of the rotating shaft 302 and rotates the rotating shaft 302. When the rotating shaft 302 rotates, the driving helical gear 303 drives the driven helical gear 304 to rotate, which in turn drives the lead screw 2 to rotate inside the housing 1. When the lead screw 2 rotates, the rotational motion is converted into the linear motion of the slide 17 through the threaded sleeve 18. The slide 17 rises and falls smoothly in the vertical direction under the constraint of the guide rail 8. The slide 17 drives the viscous oil damper 7 to rise and fall synchronously through the smooth rod 19 and the support plate 20, thereby achieving precise adjustment of the overall length of the device. After adjusting to the length that matches the installation space, the limit screw 3083 is tightened so that it is inserted into the corresponding limit groove 306 on the disc 305 to lock the rotating shaft 302 and prevent the lead screw 2 from loosening during blasting vibration.

[0040] Based on the estimated explosive impact intensity, the preload of the compression spring 10 is adjusted. The operator uses a wrench to rotate the adjusting nuts 905 at the top and bottom of the support block 904, causing the screw 903 to move up and down relative to the support block 904, thereby changing the position of the support ring 901 on the cylinder liner. After the position of the support ring 901 changes, the initial compression of the compression spring 10 changes accordingly, and its preload also changes accordingly. Adjusting the position of the support ring 901 upwards can increase the spring preload, which is suitable for larger explosive impact conditions; adjusting downwards can decrease the preload, which is suitable for smaller explosive impact conditions. The wedge-shaped shim can prevent the adjusting nut 905 from loosening in a vibration environment after adjustment.

[0041] Move the device to the tower leg of the high-voltage tower to be reinforced. First, place the base 6 on the tower base platform. Use anchor bolts to pass through the mounting holes on the base 6 to fix the base 6 to the tower base platform. The stiffening plate on the surface of the base 6 can enhance the structural strength of the base 6. The ball joint 5 can automatically adapt to the angle deviation caused by installation or terrain.

[0042] Then, the installation mechanism 14 is connected to the main tower leg material. The first jacket 1402 is attached to one side of the main tower leg material, and the second jacket 1403 is attached to the other side of the main tower leg material. The first jacket 1402 and the second jacket 1403 are closed together, and the main tower leg material is wrapped between the two. The rubber pads 1406 on the inner walls of the first jacket 1402 and the second jacket 1403 are attached to the surface of the tower leg, which can increase friction and play an insulating and protective role.

[0043] After passing the bolts through the bolt holes on fastening plate 1404 and fastening plate 2405, tighten the nuts to firmly clamp and fix jacket 1402 and jacket 2403 onto the main tower leg. Since ball joint 15 and ball joint 213 are provided at both ends respectively, the device can adapt to the angular deviation between the tower leg and the tower base, ensuring that no additional bending moment is generated after installation.

[0044] During blasting operations, the shock waves and seismic waves generated by the blast are transmitted to the tower legs through the foundation, causing the tower legs to vibrate. The installation mechanism 14 transmits the vibration energy to the piston rod of the viscous oil damper 7 via the ball joint 13. The piston rod reciprocates relative to the cylinder liner. The viscous fluid inside the viscous oil damper 7 generates flow resistance when the piston moves, converting some of the vibration mechanical energy into heat energy and dissipating it. At the same time, the compression spring 10 is continuously compressed and reset during the vibration process, storing and releasing energy through elastic deformation to provide elastic reset force. The viscous oil damper 7 and the compression spring 10 work together, and the elastic force of the spring and the damping force of the damper jointly resist the impact load, effectively weakening the instantaneous impact effect of the blasting on the tower legs and protecting the tower leg structure from damage. The guide structure formed by the guide post 906 and the sliding sleeve 907 ensures that the compression spring 10 moves axially and avoids lateral displacement.

[0045] After the blasting operation is completed, the device can be dismantled and recycled: First, loosen the bolts on fastening plate 1404 and fastening plate 1405 in the installation mechanism 14, so that jacket 1402 and jacket 2 1403 are separated from the main tower leg material. Remove the upper end of the device from the tower leg. Then, remove the anchor bolts on the base 6 and separate the base 6 from the tower base platform. At this point, the entire device can be completely removed from the high-voltage tower and transferred to the next tower leg to be reinforced or recycled and stored, waiting to be reinstalled and used in the next blasting operation, thus realizing the recycling of the device.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blast shock wave protection device for high-voltage power line towers, comprising a housing (1) and a viscous oil damper (7), characterized in that: The bottom of the housing (1) is equipped with a ball joint (5), and the bottom of the ball joint (5) is equipped with a base (6). The inside of the housing (1) is equipped with a lead screw (2). The bottom of one side of the housing (1) is equipped with a drive mechanism (3) for driving the lead screw (2) to rotate. The top of the housing (1) is slidably connected with a lifting bracket (4). The bottom of the lifting bracket (4) is threadedly connected to the lead screw (2). The bottom of the viscous oil damper (7) is fixedly connected to the top of the lifting bracket (4). The piston rod surface of the viscous oil damper (7) is sleeved with a compression spring (10). The top of the cylinder liner of the viscous oil damper (7) is equipped with an adjustment mechanism (9) for adjusting the preload of the compression spring (10). The top of the piston rod of the viscous oil damper (7) is equipped with a ball joint (13), and the top of the ball joint (13) is equipped with an installation mechanism (14).

2. The blast shock wave protection device for high-voltage power line towers according to claim 1, characterized in that: The drive mechanism (3) includes a support sleeve (301), which is fixedly connected to the bottom of one side of the housing (1). The support sleeve (301) is rotatably connected to a shaft (302) through a bearing. One end of the shaft (302) is fixedly provided with a driving helical gear (303). The driving helical gear (303) is meshed with a driven helical gear (304). The driven helical gear (304) is fixedly connected to the bottom of the lead screw (2). A disc (305) is provided on one side of the shaft (302). The disc (305) is located outside the housing (1). A limiting groove (306) is provided on the surface of the disc (305). Several limiting grooves (306) are provided and are evenly distributed along the circumference of the disc (305). A wrench position (307) is provided at the other end of the shaft (302). A limiting component (308) for limiting the disc (305) is provided on the top of the disc (305).

3. The blast shock wave protection device for high-voltage power line towers according to claim 2, characterized in that: The limiting component (308) includes a support plate (3081), one side of which is fixedly connected to the bottom of the chassis (1), and both sides of the bottom end of the support plate (3081) are fixedly provided with reinforcing ribs (3082), and the top end of the support plate (3081) is threadedly connected with a limiting screw (3083) corresponding to the limiting groove (306).

4. The blast shock wave protection device for high-voltage power line towers according to claim 1, characterized in that: The adjustment mechanism (9) includes a support ring (901), which is sleeved on the top of the cylinder liner of the viscous oil damper (7) and located at the bottom of the compression spring (10). Both sides of the support ring (901) are fixedly provided with protruding plates (902), and the bottom end of the protruding plate (902) is fixedly provided with a screw (903). The surface of the screw (903) is slidably connected with a support block (904). One side of the support block (904) is fixedly connected to the cylinder liner of the viscous oil damper (7). The top and bottom ends of the support block (904) are provided with adjusting nuts (905) that are threadedly connected to the screw (903), and a wedge-shaped washer is provided between the adjusting nut (905) and the support block (904).

5. The blast shock wave protection device for high-voltage power line towers according to claim 4, characterized in that: The top of the convex plate (902) is fixedly provided with a guide post (906), the surface of the guide post (906) is slidably connected with a sliding sleeve (907), the surface of the sliding sleeve (907) is fixedly provided with a connecting frame (908), the top of the connecting frame (908) is fixedly provided with a support (909), the top of the piston rod of the viscous oil damper (7) is fixedly provided with a tray (11), one side of the support (909) is fixedly connected to the tray (11), the compression spring (10) is located at the bottom of the tray (11), and the bottom of the ball joint (13) is fixedly connected to the top of the tray (11) by screws.

6. The blast shock wave protection device for high-voltage power line towers according to claim 1, characterized in that: The installation mechanism (14) includes a mounting base (1401). The bottom end of the mounting base (1401) is fixedly connected to the top end of the ball joint (13) by screws. A first sleeve (1402) is fixedly provided on one side of the mounting base (1401). A second sleeve (1403) is provided on one side of the first sleeve (1402). Rubber pads (1406) are fixedly provided on the inner walls of the first sleeve (1402) and the second sleeve (1403). Fastening plates (1404) are fixedly provided on both sides of the first sleeve (1402). Fastening plates (1405) are fixedly provided on both sides of the second sleeve (1403). The second fastening plate (1405) is fixedly connected to the first fastening plate (1404) by bolts. Bolt holes for bolt insertion are opened on the surface of the second fastening plate (1405) and the surface of the first fastening plate (1404).

7. The blast shock wave protection device for high-voltage power line towers according to claim 1, characterized in that: The bottom of the lifting bracket (4) is fixedly provided with a slide (17). The middle part of the slide (17) is provided with a threaded sleeve (18) that is threadedly connected to the lead screw (2). The bottom end of the lead screw (2) is rotatably connected to the inner wall of the bottom end of the housing (1) through a bearing. The top end of the lead screw (2) is rotatably connected to the inner wall of the top end of the housing (1) through a bearing. The middle part of both sides of the slide (17) is provided with a sliding groove. The inner walls of both sides of the housing (1) are fixedly provided with vertically arranged guide rails (8). The slide (17) is slidably connected to the guide rails (8) through the sliding grooves. 17) Both sides of the top are fixedly provided with light rods (19), the light rods (19) are slidably connected to the top of the chassis (1), the top of the chassis (1) is provided with a support plate (20), the bottom sides of the support plate (20) are respectively fixedly connected to the top of the two light rods (19), the bottom of the cylinder liner of the viscous oil damper (7) is fixedly provided with a gasket (12), the bottom of the gasket (12) is fixedly connected to the middle of the top of the support plate (20) by screws, the front of the chassis (1) is provided with an inspection port, and a cover (16) is fixedly installed on one side of the inspection port by screws.

8. The blast shock wave protection device for high-voltage power line towers according to claim 1, characterized in that: A support column (15) is fixedly provided in the middle of the bottom end of the chassis (1). The top end of the ball joint (5) is fixedly connected to the bottom end of the support column (15) by bolts. A base (6) is fixedly installed at the bottom end of the ball joint (5) by bolts. A stiffening plate for strengthening is welded on the surface of the base (6). An installation hole is opened at the bottom end of the base (6).

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