A ground wire support for an electric energy transmission tower and a method of using the same

Abstract

The present invention relates to the technical field of electric power transmission towers, and in particular to a ground wire support and a method of using the ground wire support of an electric power transmission tower, comprising a back plate, on which auxiliary aluminum alloy frames for increasing the storage capacity of the support are symmetrically arranged, and on which a plurality of aluminum alloy telescopic frames for changing the length according to environmental requirements are arranged. The present invention enables the auxiliary aluminum alloy frame to realize the function of structural folding through the arrangement of a first telescopic rod and a second telescopic rod, which can effectively reduce the problem of the auxiliary aluminum alloy frame being too large in volume. Through the arrangement of a fourth telescopic rod and a fifth telescopic rod, the aluminum alloy telescopic frame can realize the function of longitudinal telescopic expansion, further reducing the aluminum alloy telescopic frame in the face of an environment with a rapid wind direction, avoiding the shaking caused by the excessive volume due to the influence of wind resistance. At the same time, the telescopic expansion of the aluminum alloy telescopic frame can effectively reduce the forward tilting phenomenon during the splicing process, thereby reducing the difficulty of installation of the ground wire support by the staff and reducing the generation of safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power transmission towers, and in particular to a ground wire support of an electric power transmission tower and a use method thereof. Background Art

[0002] Referring to the patent document with application number "CN202220175693.8" and named "A ground wire bracket for a transmission tower", this patent document increases the lightning protection area of ​​the ground wire bracket by using the first support rod, the support frame, the second support rod, the third support rod and the second fixed key in coordination with each other, while not reducing the stability of the ground wire bracket, thereby improving the service life and practicality of the ground wire bracket.

[0003] The ground wire supports on both sides of the power transmission tower are usually made of materials that conform to the tower structure, and are symmetrically arranged on both sides of the tower. In order to improve the aesthetics, the two ground wire supports are kept in a horizontal state. During the hoisting process of the existing ground wire supports, since the ground wire supports are in a well-spliced ​​state, they are affected by the wind according to the lifting height of the crane, causing the ground wire supports to shake. Even if they reach the splicing position, they will tilt forward due to the unstable center of gravity of the ground wire supports. Manual personnel are still located above the tower to assist in the splicing work, which increases the difficulty of installing the ground wire supports and also increases the personal safety of the staff. In addition, the existing technology cannot change the length specifications of the ground wire supports according to environmental requirements, thereby reducing modifications under different environments.

[0004] To this end, we designed a ground wire bracket for an electric power transmission tower and a method of using it. Utility Model Content

[0005] The purpose of the present invention is to solve the problem that the high-altitude assembly in the prior art is difficult and has high safety hazards, and to propose a ground wire bracket for an electric energy transmission tower and a method for using the same.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A ground wire support for an electric energy transmission tower, comprising a back plate, the back plate being provided with fixing holes for improving the tower body connection contact surface, the back plate being symmetrically provided with bolt holes for improving the fixing strength, the back plate being symmetrically provided with hanging grooves for improving the tower body contact surface, and the hanging grooves being provided with through sliding grooves for improving the tower body hanging length;

[0008] The back plate is symmetrically provided with an auxiliary aluminum alloy frame for increasing the storage capacity of the bracket, the auxiliary aluminum alloy frame is provided with a plurality of aluminum alloy telescopic frames for changing the length according to environmental requirements, the back plate is symmetrically provided with a second placement frame for improving the supporting strength of the aluminum alloy telescopic frame, and the back plate is symmetrically provided with fixed steel frames for improving the linkage and supporting strength of the bracket.

[0009] Preferably, a first placement frame for fixing an auxiliary aluminum alloy frame is symmetrically provided on the back panel, the auxiliary aluminum alloy frame is rectangular as a whole, a telescopic button for adapting to length changes is provided in the auxiliary aluminum alloy frame, the auxiliary aluminum alloy frame is fixedly connected to the telescopic button through a fixed end, a plurality of first telescopic rods for improving the telescopic support of the auxiliary aluminum alloy frame are provided on the fixed end, and a telescopic spring is provided in the first telescopic rod.

[0010] Preferably, first rotating shafts for folding are provided on both sides of the auxiliary aluminum alloy frame, and four second telescopic rods for connecting the auxiliary aluminum alloy frame are provided on the first rotating shaft, and second rotating shafts for rotating the second telescopic rods are provided on both sides of the first rotating shaft;

[0011] The auxiliary aluminum alloy frame side wall is provided with a plurality of first holes for positioning, and the front ends of the first holes are each provided with a first fixing pin for fixing the positioning.

[0012] Preferably, the aluminum alloy telescopic frame is provided with a plurality of spring telescopic shafts, and the spring telescopic shafts are fixedly connected to the side walls of the auxiliary aluminum alloy frame, the aluminum alloy telescopic frames are fixed by connecting frames, the middle sections of both sides of the aluminum alloy telescopic frame are provided with first telescopic frames for telescoping, the first telescopic frames are provided with telescopic seams for easy storage, the aluminum alloy telescopic frame is provided with a plurality of second holes for changing the length, and the bottom of the first telescopic frame is fixedly connected to the side walls of the aluminum alloy telescopic frame through a third telescopic rod;

[0013] A third rotating axis for folding the aluminum alloy telescopic frame is symmetrically arranged at the bottom of the first telescopic frame. A long hole is opened on the aluminum alloy telescopic frame, and a fourth telescopic rod for improving the telescopic effect is arranged in the long hole. The aluminum alloy telescopic frame is provided with a plurality of second fixing pins for fixing the fourth telescopic rod, and the second fixing pins are adapted to the second holes.

[0014] Preferably, the aluminum alloy telescopic frame is provided with a plurality of fourth rotating axes for folding, the third rotating axis is provided with a fifth telescopic rod for improving the folding effect, the side wall of the aluminum alloy telescopic frame is provided with a plurality of sliding grooves, and the sliding grooves are provided with fixed sliders for fixing the fifth telescopic rod, and the fifth telescopic rod is fixedly connected to the fixed slider.

[0015] Preferably, an aluminum alloy telescopic angle for closing is provided at one end of the aluminum alloy telescopic frame, and both sides of the connecting frame are fixedly connected to the two aluminum alloy telescopic angles by welding, a plurality of spring telescopic shafts are provided at one end of the aluminum alloy telescopic angle, a plurality of second telescopic frames for shrinking and storing are provided on the aluminum alloy telescopic angle, a through hole is provided on the aluminum alloy telescopic angle, and a sixth telescopic rod for supporting the aluminum alloy telescopic angle is provided in the through hole, a plurality of third holes are provided on the side walls of the aluminum alloy telescopic angle, and a third fixing pin for fixing the telescopic length is provided on the aluminum alloy telescopic angle.

[0016] Preferably, the second placement frame is fixedly connected to the back plate by welding, and the second placement frame is provided with a plurality of spherical fixtures for free rotation, the spherical fixtures are longitudinally arranged linearly in the second placement frame, and the spherical fixtures are provided with a seventh telescopic rod for supporting the aluminum alloy telescopic frame.

[0017] Preferably, the seventh telescopic rod is fixedly connected to the spherical fixer through an elastic receiver, and the side wall of the elastic receiver is adapted to the spherical fixer, the seventh telescopic rod is provided with a plurality of extension rods for adjusting the spacing, and the extension rod is provided with a rotatable connecting rod for connecting the aluminum alloy telescopic frame, one end of the rotatable connecting rod is provided with an arc, and the arc is fixedly connected to the fourth rotating shaft through a bearing;

[0018] The spherical fixer is provided with an eighth telescopic rod for improving the supporting effect, the eighth telescopic rod is provided with a strip hole, and a tail end receiver for contracting the eighth telescopic rod is provided in the strip hole, and the tail end receiver is provided with an elastic shaft for supporting the eighth telescopic rod.

[0019] Preferably, a third placement frame is symmetrically arranged on the back plate, an aluminum alloy telescopic rod for coordinating the aluminum alloy telescopic frame is arranged on the third placement frame, the aluminum alloy telescopic rod is fixedly connected to the third placement frame through a fixed steel frame, a fixed rotating shaft for rotating the aluminum alloy telescopic rod is arranged on the fixed steel frame, the fixed rotating shaft is fixedly connected to the aluminum alloy telescopic rod through a connecting piece, a fixed cover for storage is arranged on the aluminum alloy telescopic rod, an aluminum alloy frame for improving the connection strength is arranged on the fixed steel frame, and the aluminum alloy frame is fixedly connected to the third placement frame;

[0020] The aluminum alloy telescopic rod is provided with a plurality of fourth holes for telescoping, the aluminum alloy telescopic rod is provided with a built-in telescopic rod for supporting, and the front end of the built-in telescopic rod is provided with an auxiliary block for connecting the aluminum alloy telescopic rod;

[0021] The aluminum alloy telescopic rod is provided with a foldable telescopic rod for connecting the aluminum alloy telescopic angle, a joint seam is provided between the foldable telescopic rod and the aluminum alloy telescopic rod, and the foldable telescopic rod is fixedly connected to the aluminum alloy telescopic rod through two fixed connectors, and the other end of the foldable telescopic rod is fixedly connected to the aluminum alloy telescopic angle.

[0022] Preferably, the front end of the eighth telescopic rod is fixedly connected to the aluminum alloy telescopic rod through a snap-fitting piece, and the snap-fitting piece is symmetrically provided with a fourth fixing pin for improving the connection effect, the spherical fixer is provided with a torque adjuster for reinforcing the aluminum alloy telescopic rod, and the torque adjuster is provided with a torque fixing steel rod for connecting the aluminum alloy telescopic rod.

[0023] The beneficial effects of the present invention are:

[0024] The present invention enables the auxiliary aluminum alloy frame to realize the function of structural folding through the arrangement of the first telescopic rod and the second telescopic rod, which can effectively reduce the problem of the auxiliary aluminum alloy frame being too large in volume; and enables the aluminum alloy telescopic frame to realize the function of longitudinal telescopic expansion and contraction through the arrangement of the fourth telescopic rod and the fifth telescopic rod, which further reduces the aluminum alloy telescopic frame from shaking due to the influence of wind resistance due to its large volume in an environment with rapid wind direction; and at the same time, the expansion and contraction of the aluminum alloy telescopic frame can effectively reduce the forward tilting phenomenon in the splicing process, thereby reducing the difficulty of installation of the ground wire bracket by the staff and reducing the occurrence of safety hazards.

[0025] The present invention arranges the second telescopic frame and the sixth telescopic rod so that the aluminum alloy telescopic angle can be synchronously adjusted according to the telescopic function of the aluminum alloy telescopic frame, thereby avoiding the increase in the weight of the front end of the aluminum alloy telescopic frame due to the inability to adjust the aluminum alloy telescopic angle, thereby reducing the forward tilt phenomenon during the hoisting process of the aluminum alloy telescopic frame. The arrangement of the spherical fixer can effectively increase the angle deflection of the seventh telescopic rod, the eighth telescopic rod and the torque adjuster, so that the three can synchronize the telescopic adjustment work of the aluminum alloy telescopic frame, thereby coordinating the longitudinal telescopic work of the aluminum alloy telescopic frame.

[0026] The present invention improves the synchronous telescopic effect of the aluminum alloy telescopic rod and the aluminum alloy telescopic frame under the premise of connecting the aluminum alloy telescopic angle by setting a fixed steel frame and a fixed rotating shaft, avoids the aluminum alloy telescopic rod and the aluminum alloy telescopic frame from being torn due to the non-coupling effect, and at the same time, fixing the steel frame can effectively improve the supporting strength of the aluminum alloy telescopic rod on the back plate.

[0027] The present invention enables the foldable telescopic rod to achieve a linkage effect of the synchronous aluminum alloy telescopic frame through the arrangement of the splicing seam and the fixed connecting rod, thereby avoiding the phenomenon of poor smoothness in the telescopic process of the aluminum alloy telescopic rod. At the same time, the fixed connecting rod can effectively improve the connection strength between the two. Through the hanging groove and the through sliding groove, the connection strength between the back plate and the tower body can be effectively improved. At the same time, the back plate can be effectively hung on the side wall of the tower body, thereby reducing the back plate deviation caused by environmental influences. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a ground wire support for an electric energy transmission tower proposed by the present invention;

[0029] Figure 2 A structural stereogram of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0030] Figure 3 A rear view of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0031] Figure 4 This is a disassembled diagram of the back plate of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0032] Figure 5 This is a front view of a disassembled back plate of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0033] Figure 6 for Figure 5 A-marked enlarged view of the structure;

[0034] Figure 7 for Figure 5 The enlarged view of the structure marked with B in the middle;

[0035] Figure 8 for Figure 5 The enlarged view of the structure marked with C in the middle;

[0036] Fig. 9 for Figure 5 The enlarged view of the structure marked with D in the middle;

[0037] Fig.10 A seventh telescopic rod diagram of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0038] Fig.11 This is a diagram of an aluminum alloy telescopic rod of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0039] Fig.12 for Fig.11 The enlarged view of the structure marked with E in the middle;

[0040] Fig.13A top view of an aluminum alloy telescopic rod of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0041] Fig.14 This is a structural diagram of an aluminum alloy telescopic frame of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0042] Fig.15 for Fig.14 The enlarged view of the structure marked with F in the middle;

[0043] Fig.16 for Fig.14 The enlarged view of the structure marked with G in the middle;

[0044] Fig.17 for Fig.14 The enlarged view of the structure marked with H in the figure;

[0045] Fig.18 A three-dimensional structural diagram of an aluminum alloy telescopic frame of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0046] Fig.19 for Fig.18 The enlarged view of the structure marked with I in the figure;

[0047] Fig. 20 A structural diagram of a connection frame of a ground wire support of an electric energy transmission tower proposed by the present invention;

[0048] Fig.21 This is a structural diagram of an aluminum alloy telescopic angle of a ground wire support of an electric energy transmission tower proposed by the present invention.

[0049] In the figure: 1. back panel;

[0050] 2. The first placement frame;

[0051] 21. Auxiliary aluminum alloy frame; 211. Telescopic button; 212. Fixed end; 213. First telescopic rod; 214. Telescopic spring; 215. First rotation axis; 216. Second rotation axis; 217. Second telescopic rod; 218. First hole; 219. First fixing pin;

[0052] 22. Aluminum alloy telescopic frame;

[0053] 221, first telescopic frame; 2211, expansion joint; 2212, second hole; 2213, third telescopic rod;

[0054] 222, third rotating shaft; 223, fourth telescopic rod; 224, second fixing pin; 225, fourth rotating shaft; 226, spring telescopic shaft; 227, fifth telescopic rod; 228, slide groove; 229, fixed slider;

[0055] 23, aluminum alloy telescopic angle; 231, second telescopic frame; 232, through hole; 233, third hole; 234, sixth telescopic rod; 235, third fixing pin;

[0056] 3. Second placement frame; 31. Ball-shaped fixer;

[0057] 32. elastic storage device; 321. seventh telescopic rod; 322. extension rod; 323. rotatable connecting rod;

[0058] 33. Eighth telescopic rod; 331. Tail end receiver; 332. Elastic shaft; 333. Buckle joint; 334. Fourth fixing pin;

[0059] 34. Torque adjuster; 35. Torque fixing steel rod;

[0060] 4. The third placement frame; 41. The fixed steel frame; 42. The aluminum alloy frame; 43. The fixed rotation axis; 44. The connecting piece; 45. The fixed cover;

[0061] 46. ​​Aluminum alloy telescopic rod; 461. Fourth hole; 462. Built-in telescopic rod; 463. Auxiliary block;

[0062] 47. foldable telescopic rod; 471. joint seam; 472. fixed connector;

[0063] 5. Fixing hole; 6. Bolt hole; 7. Hanging groove; 8. Through slide groove; 9. Connection frame. DETAILED DESCRIPTION

[0064] Reference Figure 1-Figure 21 A ground wire support for an electric power transmission tower includes a back plate 1. The back plate 1 is made of high-strength steel in the prior art, which is the same material as the electric power transmission tower itself, so that the back plate 1 can obtain a higher matching degree with the tower body and has the strength of the tower body. The fixing holes 5 opened on the back plate 1 are rectangular, and the four corners are curved, and are fixed by rivets and fixing steel components in the prior art, and the rivets or fixing steel components need to be linearly arranged in the fixing holes 5, and the bottom of the end head is against the two sides of the fixing holes 5, thereby improving the fixing strength of the back plate 1. Bolt holes 6 are opened on one side of the back plate 1, and a total of There are two of them, which are used to strengthen the physical foundation fixation of the backboard 1 so as to improve the connection strength between the backboard 1 and the tower body. The hanging groove 7 is opened on the back of the backboard 1, and is hollowed out from the outside to the inside and upward, so that the inside of the backboard 1 is L-shaped, and it can be hung on the tower body. The through slide groove 8 is opened at the bottom of the hanging groove 7, and the basic structure of the backboard 1 is separated between the two. The through slide groove 8 is mainly used to increase the contact surface between the backboard 1 and the tower body. At the same time, the through slide groove 8 has a hole on the basic structure of the backboard 1, which is convenient for the steel structure hanging parts in the prior art to pass through the hole and extend to the hanging groove 7, thereby completing the hanging work of the backboard 1.

[0065] The back plate 1 is symmetrically provided with an auxiliary aluminum alloy frame 21 for increasing the storage capacity of the bracket. The auxiliary aluminum alloy frame 21 is made of aluminum alloy among existing materials. It is light in texture and high in strength, and can effectively reduce the load on both sides of the tower body. The auxiliary aluminum alloy frame 21 is mainly used as the basic component for the back plate 1 to connect the aluminum alloy telescopic frame 22 below, and the overall structure of the auxiliary aluminum alloy frame 22 is similar to the aluminum alloy telescopic frame 22. The back plate 1 is symmetrically provided with a first placement frame 2 for fixing the auxiliary aluminum alloy frame 21. The first placement frame 2 is square and is fixed to the front of the back plate 1 by welding technology, which is convenient for the placement of the auxiliary aluminum alloy frame 21 and can also play the function of auxiliary limit. The auxiliary aluminum alloy frame 21 is rectangular as a whole and is rectangular as a whole. A telescopic button 211 for adapting to length changes is provided in the auxiliary aluminum alloy frame 21. The telescopic button 211 is composed of a large compression spring as a whole, and the surface of the compression spring is wrapped with multiple layers of rubber material. At the same time, there is a connection between the rubber material and the compression spring. The telescopic rod in the prior art can realize the telescopic button 211 at different lengths. The telescopic button 211 is used to buffer the impact after the aluminum alloy telescopic frame 22 and the auxiliary aluminum alloy frame 21 are contracted. The auxiliary aluminum alloy frame 21 is fixedly connected to the telescopic button 211 through the fixed end 212. The fixed end 212 is composed of a folding steel component in the prior art. The folding steel component can realize telescopic extension at different lengths. A plurality of first telescopic rods 213 for improving the telescopic support of the auxiliary aluminum alloy frame 21 are provided on the fixed end 212. The first telescopic rod 213 is fixed to the four corners of the fixed end 212. It can extend a limited length and is mainly used to assist the aluminum alloy frame 21 in the telescopic process, so that it can be completed on the basis of the fixed end 212. A telescopic spring 214 is provided in the first telescopic rod 213. The telescopic spring 214 is arranged inside the first telescopic rod 213 and exposed to the outside, which is mainly convenient for later maintenance and replacement. At the same time, it has the function of buffering the first telescopic rod 213 to increase its service life.

[0066] The auxiliary aluminum alloy frame 21 is provided with a first rotating shaft 215 that can be used for folding on both sides. The first rotating shaft 215 is used for rotating the second telescopic rod 217 in the text, and the free telescopic extension is completed under the premise of the rotation of the first rotating shaft 215. The first rotating shaft 215 is only provided on both sides of the auxiliary aluminum alloy frame 21, and the first rotating shaft 215 is provided with four second telescopic rods 217 for connecting the auxiliary aluminum alloy frame 21. The second telescopic rod 217 is mainly used to support the auxiliary aluminum alloy frame 21 after extension, and the length is adjusted under the extension and contraction of the auxiliary aluminum alloy frame 21. The second rotating shaft 216 for rotating the second telescopic rod 217 is provided on both sides of the first rotating shaft 215. The second rotating shaft 216 is used to assist the first rotating shaft 215 so as to improve the rotation smoothness of the second telescopic rod 217.

[0067] The side wall of the auxiliary aluminum alloy frame 21 is provided with a plurality of first holes 218 for positioning. The first holes 218 are provided on the side wall of the auxiliary aluminum alloy frame 21 in a through shape. The fourth telescopic rod 223 mentioned below is provided in the side wall of the auxiliary aluminum alloy frame 21 so that it can realize the telescopic function, and the front end of the first hole 218 is provided with a first fixing pin 219 for fixing the positioning. The first fixing pin 219 is a pin component in the prior art, and the whole is matched with the first hole 218. When the auxiliary aluminum alloy frame 21 is effectively adjusted, the first fixing pin 219 can be fixed in the first hole 218 at the front end, thereby fixing the internal auxiliary telescopic shaft.

[0068] The auxiliary aluminum alloy frame 21 is provided with a plurality of aluminum alloy telescopic frames 22 for changing the length according to environmental requirements. The aluminum alloy telescopic frames 22 are the main structure of the ground wire bracket and are spliced ​​by a plurality of aluminum alloy telescopic frames 22. The aluminum alloy telescopic frames 22 are provided with a plurality of spring telescopic shafts 226. The spring telescopic shafts 226 are composed of compression springs. The spring telescopic shafts 226 are mainly used for connecting and contracting two aluminum alloy telescopic frames 22. The spring telescopic shafts 226 are fixedly connected to the side walls of the auxiliary aluminum alloy frame 21. The spring telescopic shafts 226 are connected to the auxiliary aluminum alloy frame 21 and the aluminum The alloy telescopic frames 22 are all connected by welding. The aluminum alloy telescopic frames 22 are fixed by connecting frames 9. The connecting frames 9 are made of high-strength steel. The aluminum alloy telescopic frames 22 in the two first placement frames 2 are fixedly connected to each other and ensure that the two maintain the same horizontal plane. The middle sections of both sides of the aluminum alloy telescopic frames 22 are provided with first telescopic frames 221 for telescoping. The first telescopic frame 221 is set in the middle section of the aluminum alloy telescopic frame 22, and the length is one third of the whole. It is mainly used to store and release both sides of the aluminum alloy telescopic frame 22. The first telescopic frame 221 is provided with overlapping wrapping bags. The aluminum alloy telescopic frame 22 can be effectively and reasonably arranged after contraction, and is protected by the first telescopic frame 221. The first telescopic frame 221 is provided with an expansion joint 2211 for easy storage. The expansion joint 2211 is used to assist in storage. When there are particles on the surface of the aluminum alloy telescopic frame 22, the expansion joint 2211 can be pushed into the first telescopic frame 221 and then pushed out from the expansion joint 2211. At the same time, the expansion joint 2211 is used to discharge the air during the storage process to prevent the internal pressure from being too high and affecting the service life. A plurality of second holes 2212 for changing the length are provided, and the second holes 2212 are used for positioning the aluminum alloy telescopic frame 22. At the same time, the aluminum alloy telescopic frame 22 is endowed with the function of adjusting different lengths. The bottom of the first telescopic frame 221 is fixedly connected to the side wall of the aluminum alloy telescopic frame 22 through the third telescopic rod 2213. The third telescopic rod 2213 is only provided at one end of the first telescopic frame 221, and one end provided with the third telescopic rod 2213 needs to be connected to the auxiliary aluminum alloy frame 21 and the aluminum alloy telescopic frame 22 through the spring telescopic shaft 226, so as to ensure the smoothness during the telescopic process;

[0069] A third rotating shaft 222 for folding the aluminum alloy telescopic frame 22 is symmetrically arranged at the bottom of the first telescopic frame 221. The third rotating shaft 222 is arranged at the bottom of the first telescopic frame 221 and fixed, and the surface is coated with lubricating oil, which helps to improve the service life. A long hole is opened on the aluminum alloy telescopic frame 22, and a fourth telescopic rod 223 for improving the telescopic effect is arranged in the long hole. The fourth telescopic rod 223 is buried in the inner wall of the aluminum alloy telescopic frame 22 and is a main component for length adjustment. The aluminum alloy telescopic frame 22 is provided with a plurality of second fixing pins 224 for fixing the fourth telescopic rod 223. The second fixing pins 224 are all used to fix the extension length of the fourth telescopic rod 223, and the second fixing pins 224 are adapted to the second holes 2212. The second fixing pins 224 are mainly opened according to the size of the second holes 2212, and holes adapted to the second holes 2212 are opened on both sides of the fourth telescopic rod 223 to facilitate the second fixing pins 224 to fix it.

[0070] The aluminum alloy telescopic frame 22 is provided with a plurality of fourth rotating shafts 225 for folding. The fourth rotating shaft 225 is mainly used for connecting and rotating the rotatable connecting rod 323 described below. The fourth rotating shaft 225 is fixed to the side wall of the aluminum alloy telescopic frame 22 by a fastener and keeps a distance with the spring telescopic shaft 226. At the same time, the fourth rotating shaft 225 is both a connecting member between the aluminum alloy telescopic frames 22. The third rotating shaft 222 is provided with a fifth telescopic rod 227 for improving the folding effect. One end of the fifth telescopic rod 227 is rotatably fixed to the third rotating shaft 222, and the other end is fixed to the fixed slider 2 described below. 29 is fixed, the fifth telescopic rod 227 is used for the telescopic function of the aluminum alloy telescopic frame 22, and effectively realizes the telescopic and folding function of the aluminum alloy telescopic frame 22. The side wall of the aluminum alloy telescopic frame 22 is provided with a plurality of slide grooves 228. The slide grooves 228 are provided on the inner wall of the aluminum alloy telescopic frame 22, which is the effective moving distance of the fixed slider 229. A fixed slider 229 for fixing the fifth telescopic rod 227 is provided in the slide groove 228, and the fifth telescopic rod 227 is fixedly connected to the fixed slider 229. Two fixed sliders 229 are provided in the slide groove 228, and are fixedly connected to the corresponding fifth telescopic rod 227.

[0071] An aluminum alloy telescopic frame 22 is provided with an aluminum alloy telescopic angle 23 for closing at one end. The aluminum alloy telescopic angle 23 is mainly used to close the end of the aluminum alloy telescopic frame 22 so that the overall structure can correspond to the foldable telescopic rod 47 described below and ensure that the overall structure remains in a triangular state. The two sides of the connecting frame 9 are fixedly connected to the two aluminum alloy telescopic angles 23 by welding. Welding can improve the connection strength between the two and reduce erosion under long-term weathering. Multiple spring telescopic shafts 226 are provided at one end of the aluminum alloy telescopic angle 23. A total of four spring telescopic shafts 226 are provided on one side of the aluminum alloy telescopic angle 23, and are fixed to the end of the aluminum alloy telescopic frame 22 by welding. The aluminum alloy telescopic angle 23 is provided with multiple second telescopic frames 231 for shrinking and storing. The second telescopic frames 231 are provided on the aluminum alloy telescopic The end of the angle 23 is mainly used for the telescopic storage of the aluminum alloy telescopic angle 23 as a whole. A through hole 232 is provided on the aluminum alloy telescopic angle 23, and the through hole 232 is used for length positioning. A sixth telescopic rod 234 for supporting the aluminum alloy telescopic angle 23 is provided in the through hole 232. The sixth telescopic rod 234 is buried in the aluminum alloy telescopic angle 23 to realize the telescopic work of the aluminum alloy telescopic angle 23. A plurality of third holes 233 are provided on the side walls of the aluminum alloy telescopic angle 23. The third holes 233 are used to limit the sixth telescopic rod 234. A third fixing pin 235 for fixing the telescopic length is provided on the aluminum alloy telescopic angle 23. The third fixing pin 235 is mainly used to fix the current length of the sixth telescopic rod 234, thereby changing the length of the aluminum alloy telescopic angle 23.

[0072] A second placement frame 3 for improving the supporting strength of the aluminum alloy telescopic frame 22 is symmetrically opened on the back plate 1. The second placement frame 3 is rectangular and three components can be placed inside. The second placement frame 3 is fixed to the front of the back plate 1 by welding. The second placement frame 3 is fixedly connected to the back plate 1 by welding. Welding can improve the connection strength between the two, thereby improving efficiency. The second placement frame 3 is provided with a plurality of spherical fixtures 31 for free rotation. The spherical fixtures 31 are spherical snap-fit ​​components in the prior art, which can enable the interconnected components to achieve the function of rotation. The spherical fixtures 31 are longitudinally linearly arranged in the second placement frame 3. A total of three spherical fixtures 31 are provided. The spherical fixture 31 is provided with a seventh telescopic rod 321 for supporting the aluminum alloy telescopic frame 22. The seventh telescopic rod 321 can achieve lateral adjustment of different lengths to adapt to the length and connection of the current aluminum alloy telescopic frame 22.

[0073] The seventh telescopic rod 321 is fixedly connected to the spherical fixture 31 through an elastic receiver 32. The elastic receiver 32 is a buffer component. When the seventh telescopic rod 321 is contracted, a certain impact force will be generated. The elastic receiver 32 can dissipate the impact force on the premise of storing the seventh telescopic rod 321, so as to improve the service life of the spherical fixture 31. The side wall of the elastic receiver 32 is adapted to the spherical fixture 31. The side wall of the elastic receiver 32 is a curved wrapping surface, which can fit with the spherical fixture 31 and maintain a fixed connection under the premise of rotation. The seventh telescopic rod 321 is provided with a plurality of extension rods 322 for adjusting the spacing. The rod 322 is used to change the spacing of the rotatable connecting rod 323 described below, and is adjusted according to the width of the aluminum alloy telescopic frame 22. The extension rod 322 is provided with a rotatable connecting rod 323 for connecting the aluminum alloy telescopic frame 22. The rotatable connecting rod 323 is used to connect the fourth rotating shaft 225 described above. After the two are connected, the synchronization function of the seventh telescopic rod 321 and the aluminum alloy telescopic frame 22 can be realized. An arc is opened at one end of the rotatable connecting rod 323, and the arc is fixedly connected to the fourth rotating shaft 225 through a bearing. The bearing can improve the connection effect of the rotatable connecting rod 323 and the fourth rotating shaft 225 to improve smoothness.

[0074] An eighth telescopic rod 33 for improving the supporting effect is provided on the spherical fixer 31. The eighth telescopic rod 33 is used to improve the stability of the aluminum alloy telescopic rod 46 below. A strip hole is opened on the eighth telescopic rod 33. The strip hole is an auxiliary cavity, and a tail end receiver 331 for contracting the eighth telescopic rod 33 is provided in the strip hole. The tail end receiver 331 is used to receive the elastic shaft 332 below. An elastic shaft 332 for supporting the eighth telescopic rod 33 is provided on the tail end receiver 331. The elastic shaft 332 is mainly used for adjusting the length of the eighth telescopic rod 33, and the telescopic distance is limited, and it can only be telescoped to the tail end receiver 331.

[0075] The back plate 1 is symmetrically provided with a fixed steel frame 41 for improving the linkage and support strength of the bracket. The fixed steel frame 41 is the main connecting and fixing component. The back plate 1 is symmetrically provided with a third placement frame 4. The third placement frame 4 is arranged on the front of the back plate 1 and is located at the bottom of the second placement 3. The third placement frame 4 is provided with an aluminum alloy telescopic rod 46 for coordinating the aluminum alloy telescopic frame 22. The aluminum alloy telescopic rod 46 is mainly used to support the aluminum alloy telescopic frame 22 and link the aluminum alloy telescopic frame 22 for telescoping. The aluminum alloy telescopic rod 46 is fixedly connected to the third placement frame 4 through the fixed steel frame 41. The fixed steel frame 41 is provided with a fixed rotating shaft 43 for rotating the aluminum alloy telescopic rod 46. The fixed rotating shaft 43 is used to The angle of the aluminum alloy telescopic rod 46 is adjusted. The fixed rotating shaft 43 is fixedly connected to the aluminum alloy telescopic rod 46 through a connecting piece 44. The connecting piece 44 is used to improve the connection strength between the two and facilitate later maintenance. The aluminum alloy telescopic rod 46 is provided with a fixed cover 45 for storage. The fixed cover 45 is used to store and protect the aluminum alloy telescopic rod 46, and protect the aluminum alloy telescopic rod 46 and the connecting piece 44, thereby reducing the impact of the external environment and thus improving the service life of the two. The fixed steel frame 41 is provided with an aluminum alloy frame 42 for improving the connection strength. The aluminum alloy frame 42 is used to increase the support strength of the fixed steel frame 41, and the aluminum alloy frame 42 is fixedly connected to the third placement frame 4 and fixed by welding;

[0076] The aluminum alloy telescopic rod 46 is provided with a plurality of fourth holes 461 for telescoping, and the fourth holes 461 are symmetrically provided on both sides of the aluminum alloy telescopic rod 46 for fixing the aluminum alloy telescopic rod 46 for later length adjustment. The aluminum alloy telescopic rod 46 is provided with a built-in telescopic rod 462 for support, and the built-in telescopic rod 462 is a main component for length adjustment, and an auxiliary block 463 for connecting the aluminum alloy telescopic rod 46 is provided at the front end of the built-in telescopic rod 462, and the auxiliary block 463 is a fixing component of the built-in telescopic rod 462, and both ends of the auxiliary block 463 are fixed to the inner wall of the aluminum alloy telescopic rod 46;

[0077] The aluminum alloy telescopic rod 46 is provided with a foldable telescopic rod 47 for connecting the aluminum alloy telescopic angle 23. The foldable telescopic rod 47 is mainly used to connect the aluminum alloy telescopic angle 23. A splicing seam 471 is provided between the foldable telescopic rod 47 and the aluminum alloy telescopic rod 46. The splicing seam 471 enables the foldable telescopic rod 47 to achieve a linkage effect of a synchronous aluminum alloy telescopic frame to avoid the phenomenon of poor smoothness during the telescopic process of the aluminum alloy telescopic rod 46. The foldable telescopic rod 47 is fixedly connected to the aluminum alloy telescopic rod 46 through two fixed connectors 472. The fixed connector 472 is mainly used to connect the foldable telescopic rod 47 to the aluminum alloy telescopic rod 46. The other end of the foldable telescopic rod 47 is fixedly connected to the aluminum alloy telescopic angle 23. The foldable telescopic rod 47 is fixedly connected to the bottom end of the aluminum alloy telescopic angle 23 through a fastener.

[0078] The front end of the eighth telescopic rod 33 is fixedly connected to the aluminum alloy telescopic rod 46 through a snap-fitting piece 333. The snap-fitting piece 333 is a curved snap-fit ​​in the prior art, and the snap-fitting piece 333 is symmetrically provided with a fourth fixing pin 334 for improving the connection effect. The fourth fixing pin 334 is used to dock and fix the aluminum alloy telescopic rod 46 so that the two are in a connected and fixed state. The spherical fixer 31 is provided with a torque adjuster 34 for reinforcing the aluminum alloy telescopic rod 46. The torque adjuster 34 is a manual tightening device in the prior art, and the torque adjuster 34 is provided with a torque fixing steel rod 35 for connecting the aluminum alloy telescopic rod 46. The torque fixing steel rod 35 is connected to the torque adjuster 34 through a longitudinally movable screw. The torque fixing steel rod 35 is extended downward by adjusting the torque adjuster 34, and finally fits with the aluminum alloy telescopic rod 46.

[0079] The working principle of the present invention is as follows:

[0080] S1. First, hang the back plate 1 on the side wall of the tower body, and ensure that the hanging groove 7 and the through slide groove 8 fit with the steel structure hanging parts. Then, fix the back plate 1 on the tower body through the fixing holes 5 by steel structure fixing parts or rivets. Finally, fix the back plate 1 in the bolt holes 6 by two high-strength bolts.

[0081] S2. Then, multiple aluminum alloy telescopic frames 22 are spliced ​​together through the fourth rotating shaft 225 and the spring telescopic shaft 226, and the aluminum alloy telescopic angle 23 is fixed at the front end of the aluminum alloy telescopic frame 22. Then, the spliced ​​aluminum alloy telescopic frame 22 is fixedly connected to the auxiliary aluminum alloy frame 21, and a pair of aluminum alloy telescopic frames 22 are fixed to each other through the connecting frame 9.

[0082] S3. First, the aluminum alloy telescopic rod 46 is fixed to the back plate 1 through the fixed steel frame 41, and the length and angle of the fixed steel frame 41 and the foldable telescopic rod 47 are stretched to ensure that the foldable telescopic rod 47 is fixedly connected to the aluminum alloy telescopic angle 23 through the fasteners.

[0083] S4. Then fix the seventh telescopic rod 321, the eighth telescopic rod 33 and the torque adjuster 34 on the spherical fixer 31. First, fix the rotatable connecting rod 323 on the seventh telescopic rod 321 to the fourth rotating shaft 225, and then fix the eighth telescopic rod 33 to the end of the aluminum alloy telescopic rod 46 through the fourth fixing pin 334. Finally, adjust the torque adjuster 34 to ensure that the torque fixing steel rod 35 fits the aluminum alloy telescopic rod 46.

[0084] S5. Before hoisting, the aluminum alloy telescopic angle 23 can be pushed by external force to force the multiple aluminum alloy telescopic frames 22 at the tail end to contract and be arranged in order toward the auxiliary aluminum alloy frame 21. During the movement of the aluminum alloy telescopic frame 22, the fourth rotation axis 225 will be driven to rotate, thereby changing the length of the seventh telescopic rod 321 to contract it. Then, the aluminum alloy telescopic rod 46 and the foldable telescopic rod 47 are gradually contracted under the drive of the aluminum alloy telescopic angle 23, and then the eighth telescopic rod 33 in the middle section of the back panel 1 is driven to contract.

[0085] S6. After being fully retracted, the influence of wind resistance can be reduced during the hoisting process, and the hoisting is fixed at three places on the upper end of the back plate 1 and two places on the lower end of the back plate 1, which are symmetrically located on the first placement frame 2, the aluminum alloy telescopic frame 22, the aluminum alloy telescopic angle 23, the third placement frame 4 and the aluminum alloy telescopic rod 46, so that there will be no forward tilting during the hoisting process. At the same time, during the docking process of the tower body, the center of gravity can be maintained to reduce shaking.

[0086] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and utility model concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ground wire support for an electric power transmission tower, comprising a back plate (1), the back plate (1) being provided with a fixing hole (5) for increasing the tower body connection contact surface, the back plate (1) being symmetrically provided with bolt holes (6) for increasing the fixing strength, the back plate (1) being symmetrically provided with a suspension groove (7) for increasing the tower body contact surface, the suspension groove (7) being provided with a through slide groove (8) for increasing the tower body hanging length, characterized in that ； The back plate (1) is symmetrically provided with an auxiliary aluminum alloy frame (21) for increasing the storage capacity of the bracket, the auxiliary aluminum alloy frame (21) is provided with a plurality of aluminum alloy telescopic frames (22) for changing the length according to environmental requirements, the back plate (1) is symmetrically provided with a second placement frame (3) for improving the support strength of the aluminum alloy telescopic frame (22), the back plate (1) is symmetrically provided with a fixed steel frame (41) for improving the linkage and support strength of the bracket, the aluminum alloy telescopic frame (22) is provided with a plurality of spring telescopic shafts (226), and the spring telescopic shafts (22 6) fixedly connected to the side wall of the auxiliary aluminum alloy frame (21), the aluminum alloy telescopic frames (22) are fixed by a connecting frame (9), a first telescopic frame (221) for telescoping is provided in the middle section of both sides of the aluminum alloy telescopic frame (22), a telescopic gap (2211) for easy storage is provided on the first telescopic frame (221), a plurality of second holes (2212) for changing the length are provided on the aluminum alloy telescopic frame (22), and the bottom of the first telescopic frame (221) is fixedly connected to the side wall of the aluminum alloy telescopic frame (22) by a third telescopic rod (2213); A third rotating shaft (222) for folding the aluminum alloy telescopic frame (22) is symmetrically provided at the bottom of the first telescopic frame (221); a long hole is provided on the aluminum alloy telescopic frame (22), and a fourth telescopic rod (223) for improving the telescopic effect is provided in the long hole; a plurality of second fixing pins (224) for fixing the fourth telescopic rod (223) are provided on the aluminum alloy telescopic frame (22), and the second fixing pins (224) are matched with the second holes (2212); The aluminum alloy telescopic frame (22) is provided with a plurality of fourth rotating shafts (225) for folding, the third rotating shaft (222) is provided with a fifth telescopic rod (227) for improving the folding effect, a plurality of slide grooves (228) are provided on the side wall of the aluminum alloy telescopic frame (22), and a fixed slide block (229) for fixing the fifth telescopic rod (227) is provided in the slide groove (228), and the fifth telescopic rod (227) is fixedly connected to the fixed slide block (229); The second placement frame (3) is fixedly connected to the back plate (1) by welding, and a plurality of spherical fixtures (31) for free rotation are provided on the second placement frame (3). The spherical fixtures (31) are longitudinally linearly arranged in the second placement frame (3), and a seventh telescopic rod (321) for supporting the aluminum alloy telescopic frame (22) is provided on the spherical fixtures (31).

2. A ground wire support for an electric power transmission tower according to claim 1, characterized in that: The back plate (1) is symmetrically provided with a first placement frame (2) for fixing an auxiliary aluminum alloy frame (21); the auxiliary aluminum alloy frame (21) is rectangular in shape as a whole; a telescopic button (211) for adapting to length changes is provided inside the auxiliary aluminum alloy frame (21); the auxiliary aluminum alloy frame (21) is fixedly connected to the telescopic button (211) via a fixed end (212); a plurality of first telescopic rods (213) for improving telescopic support of the auxiliary aluminum alloy frame (21) are provided on the fixed end (212); and a telescopic spring (214) is provided inside the first telescopic rod (213).

3. A ground wire support for an electric power transmission tower according to claim 2, characterized in that: First rotating shafts (215) that can be used for folding are provided on both sides of the auxiliary aluminum alloy frame (21), and four second telescopic rods (217) for connecting to the auxiliary aluminum alloy frame (21) are provided on the first rotating shaft (215), and second rotating shafts (216) for rotating the second telescopic rods (217) are provided on both sides of the first rotating shaft (215); The side wall of the auxiliary aluminum alloy frame (21) is provided with a plurality of first holes (218) for positioning, and the front ends of the first holes (218) are each provided with a first fixing pin (219) for fixing the positioning.

4. A ground wire support for an electric power transmission tower according to claim 3, characterized in that: An aluminum alloy telescopic angle (23) for closing is provided at one end of the aluminum alloy telescopic frame (22), and two sides of the connection frame (9) are fixedly connected to the two aluminum alloy telescopic angles (23) by welding. A plurality of spring telescopic shafts (226) are provided at one end of the aluminum alloy telescopic angle (23), and a plurality of second telescopic frames (231) for shrinking and storing are provided on the aluminum alloy telescopic angle (23). A through hole (232) is provided on the aluminum alloy telescopic angle (23), and a sixth telescopic rod (234) for supporting the aluminum alloy telescopic angle (23) is provided in the through hole (232). A plurality of third holes (233) are provided on the side walls of the aluminum alloy telescopic angle (23), and a third fixing pin (235) for fixing the telescopic length is provided on the aluminum alloy telescopic angle (23).

5. The ground wire support of an electric power transmission tower according to claim 4, characterized in that: The seventh telescopic rod (321) is fixedly connected to the spherical fixer (31) via an elastic receiver (32), and the side wall of the elastic receiver (32) is adapted to the spherical fixer (31); the seventh telescopic rod (321) is provided with a plurality of extension rods (322) for adjusting the spacing, and the extension rods (322) are provided with rotatable connecting rods (323) for connecting to the aluminum alloy telescopic frame (22); one end of the rotatable connecting rod (323) is provided with an arc, and the arc is fixedly connected to the fourth rotating shaft (225) via a bearing; The spherical fixer (31) is provided with an eighth telescopic rod (33) for improving the supporting effect, the eighth telescopic rod (33) is provided with a strip hole, and a tail end receiver (331) for retracting the eighth telescopic rod (33) is provided in the strip hole, and an elastic shaft (332) for supporting the eighth telescopic rod (33) is provided on the tail end receiver (331).

6. A ground wire support for an electric power transmission tower according to claim 5, characterized in that: A third placement frame (4) is symmetrically arranged on the back plate (1); an aluminum alloy telescopic rod (46) for coordinating the aluminum alloy telescopic frame (22) is arranged on the third placement frame (4); the aluminum alloy telescopic rod (46) is fixedly connected to the third placement frame (4) via a fixed steel frame (41); a fixed rotating shaft (43) for rotating the aluminum alloy telescopic rod (46) is arranged on the fixed steel frame (41); the fixed rotating shaft (43) is fixedly connected to the aluminum alloy telescopic rod (46) via a connecting piece (44); a fixed cover (45) for storing is arranged on the aluminum alloy telescopic rod (46); an aluminum alloy frame (42) for improving connection strength is arranged on the fixed steel frame (41); and the aluminum alloy frame (42) is fixedly connected to the third placement frame (4); The aluminum alloy telescopic rod (46) is provided with a plurality of fourth holes (461) for telescoping, the aluminum alloy telescopic rod (46) is provided with a built-in telescopic rod (462) for supporting, and the front end of the built-in telescopic rod (462) is provided with an auxiliary block (463) for connecting to the aluminum alloy telescopic rod (46); The aluminum alloy telescopic rod (46) is provided with a foldable telescopic rod (47) for connecting to the aluminum alloy telescopic angle (23); a joint seam (471) is provided between the foldable telescopic rod (47) and the aluminum alloy telescopic rod (46); the foldable telescopic rod (47) is fixedly connected to the aluminum alloy telescopic rod (46) via two fixed connectors (472); and the other end of the foldable telescopic rod (47) is fixedly connected to the aluminum alloy telescopic angle (23); The front end of the eighth telescopic rod (33) is fixedly connected to the aluminum alloy telescopic rod (46) via a snap-fitting piece (333), and the snap-fitting piece (333) is symmetrically provided with a fourth fixing pin (334) for improving the connection effect, and the spherical fixer (31) is provided with a torque adjuster (34) for reinforcing the aluminum alloy telescopic rod (46), and the torque adjuster (34) is provided with a torque fixing steel rod (35) for connecting the aluminum alloy telescopic rod (46).

7. A method for using a ground wire support of an electric power transmission tower according to claim 6, characterized in that: The following steps are involved: S1. First, hang the back plate (1) on the side wall of the tower body and ensure that the hanging groove (7) and the through-sliding groove (8) are in mutual fit with the steel structure hanging member. Then, the back plate (1) is fixed to the tower body through the fixing hole (5) by means of the steel structure fixing member or rivet. Finally, the back plate (1) is fixed in the bolt hole (6) by means of two high-strength bolts. S2, then splicing a plurality of aluminum alloy telescopic frames (22) together via a fourth rotating shaft (225) and a spring telescopic shaft (226), and fixing an aluminum alloy telescopic angle (23) at the front end of the aluminum alloy telescopic frame (22), then fixing the spliced ​​aluminum alloy telescopic frame (22) to the auxiliary aluminum alloy frame (21), and fixing a pair of aluminum alloy telescopic frames (22) to each other via a connecting frame (9); S3, firstly, fixing the aluminum alloy telescopic rod (46) on the back plate (1) via the fixed steel frame (41), and stretching the fixed steel frame (41) and the foldable telescopic rod (47) to a length and an angle; S4, then fix the seventh telescopic rod (321), the eighth telescopic rod (33) and the torque adjuster (34) on the spherical fixer (31), first fix the rotatable connecting rod (323) on the seventh telescopic rod (321) to the fourth rotating shaft (225), then fix the eighth telescopic rod (33) to the end of the aluminum alloy telescopic rod (46) through the fourth fixing pin (334), and finally adjust the torque adjuster (34) to ensure that the torque fixing steel rod (35) and the aluminum alloy telescopic rod (46) are in good agreement; S5. Before hoisting, the aluminum alloy telescopic angle (23) can be pushed by external force and arranged in an orderly manner toward the auxiliary aluminum alloy frame (21). During the movement of the aluminum alloy telescopic frame (22), the fourth rotation axis (225) will be driven to rotate; S6, after being fully retracted, can reduce the influence of wind resistance during the hoisting process, and is hoisted and fixed at three locations on the upper end of the back plate (1) and two locations on the lower end of the back plate (1), respectively symmetrically located on the first placement frame (2), the aluminum alloy telescopic frame (22), the aluminum alloy telescopic angle (23), the third placement frame (4) and the aluminum alloy telescopic rod (46).

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