Shock-absorbing structure is consolidated to transmission tower sloping material and transmission tower
Technical Field
The invention belongs to the technical field of power transmission engineering, and particularly relates to a power transmission tower diagonal material reinforcing and damping structure and a power transmission tower.
Background
The transmission tower is an important electric power engineering facility, the running state of the transmission tower is directly related to the safety and stability of the whole power grid, and the normal running of the transmission tower is an important foundation for ensuring continuous power supply of electric power. The reliability of the structure of the transmission tower, which is an important supporting device for the transmission line, must be ensured. On the one hand, in the use, the angle steel of the power transmission tower is often damaged and deformed due to the conditions of atmospheric corrosion, mechanical external force action, insufficient design strength and the like, and the power transmission line is disconnected by reversing the tower along with the aggravation of the damage degree, so that the power grid is interrupted. On the other hand, the field investigation of the prior tower-reversing accidents shows that the reasons of a plurality of tower-reversing accidents are improper arrangement of a tower body diaphragm surface, instability of inclined materials, instability of main materials and the like, and the safety performance of the power transmission tower under the existing condition cannot be met by a part of in-service power transmission towers designed according to the prior specifications. Therefore, it is necessary to reinforce the transmission line tower material of the transmission tower.
Earthquake action and wind load action are two of the most prominent factors in super high-rise building design. As a high-rise structure, the natural disasters can cause multidirectional vibration of the power transmission tower, and the power transmission tower rod pieces vibrate under the action of load, so that fatigue damage of the rod pieces is caused, and the safety of the whole power transmission line and the periphery is affected. Therefore, the damping device has remarkable engineering practical value for damping the transmission tower rod, protecting the safety of the structure and protecting the navigation.
At present, many power transmission lines are still constructed in the 90 s, and the structural design and performance of the power transmission lines cannot reach the current standards. The existing power transmission towers are designed and constructed in the standard preliminary development stage of China, and are rebuilt according to the original drawing for supplying power as soon as possible after the wind disaster reverse tower accident occurs, so that hidden danger is brought to wind resistance and disaster prevention of the power transmission line. Therefore, new requirements are placed on the reinforcement and shock absorption of the existing power transmission tower.
The reinforcing transformation of the power transmission tower is limited by various aspects, the power transmission tower needs to be kept in a state of electrified operation, the performance of the power transmission tower cannot be influenced in the reinforcing process, the punching and welding on the original structure of the power transmission tower need to be avoided, the damage to the original structure of the power transmission tower is avoided, the high-altitude welding difficulty is high, the risk is high, the reinforcing tool needs to be simple and easy, and the reinforcing safety is ensured. But today there is no mature and widely accepted technical measure.
Based on the above, the invention designs a power transmission tower diagonal reinforcement shock absorption structure to solve the above problems. .
Disclosure of Invention
In order to solve the problems, the invention provides a reinforcing and damping structure and a method based on the reinforcing and energy consumption of the inclined material of the power transmission tower, which can realize the reinforcement and damping of the original structure on the power transmission tower on the basis of no damage, in the construction process, the original components of the power transmission tower do not need to be welded, punched and the like, so that structural damage to the original components of the power transmission tower is avoided, and further damage to the original performance of the power transmission tower is avoided. The invention has the advantages of high reliability, easy operation, wide applicability, convenient construction and the like.
In order to achieve the above purpose, the technical scheme includes that the power transmission tower diagonal reinforcement shock absorption structure comprises clamp assemblies, clamp connecting assemblies, shock absorption devices and reinforcement diagonal members, wherein the reinforcement diagonal members are identical in shape with the original diagonal members and are symmetrically attached to one side of the original diagonal members, multiple groups of the clamp assemblies are sequentially arranged at intervals along the length direction of the reinforcement diagonal members so as to clamp the reinforcement diagonal members and the original diagonal members, the shock absorption devices are transversely arranged between the two reinforcement diagonal members which are arranged in a crossed mode, the shock absorption devices are provided with elastic degrees of freedom of transverse expansion, two ends of the shock absorption devices are respectively connected with the clamp connecting assemblies, the two clamp connecting assemblies are respectively connected with any two clamp assemblies which are arranged in the same height of the two reinforcement diagonal members in a crossed mode, and the clamp connecting assemblies are provided with degrees of freedom of spatial rotation.
In one possible implementation manner, the clamp assembly comprises two L-shaped first clamps and one flat plate first clamp, the two L-shaped first clamps are symmetrically clamped on two sides of the vertical plates of the reinforcing inclined material and the original inclined material, the flat plate first clamps are attached to the back surfaces of the transverse plates of the reinforcing inclined material and the original inclined material, the two first ends of the two L-shaped first clamps extend to the outer sides of the vertical plates of the reinforcing inclined material and the original inclined material and are connected through fastening bolts, and the second ends of the two L-shaped first clamps extend to the outer sides of the transverse plates of the reinforcing inclined material and the original inclined material and are respectively connected with two ends of the flat plate first clamps through fastening bolts.
In one possible implementation, a first gasket is sandwiched between the first ends of the two L-shaped first clamps, and a second gasket is sandwiched between the end of the flat plate first clamp and the second end of the L-shaped first clamp.
In one possible implementation manner, the fixture connection assembly comprises triangular prism cushion blocks, connection portions and universal joints, wherein the triangular prism cushion blocks are clamped and fixed in right-angle grooves of any L-shaped first fixture, the universal joints are fixed with inclined planes of the triangular prism cushion blocks through the connection portions, and end portions of the damping devices are connected to the universal joints.
In one possible implementation manner, the connecting portion comprises a connecting plate and a fixing plate, a plurality of inner connecting holes which are connected with the inclined surface of the triangular prism cushion block by means of fastening bolts are uniformly distributed in the middle of the connecting plate, a plurality of outer connecting holes which are connected with the fixing plate by means of fastening bolts are uniformly distributed in the circumferential direction of the connecting plate, and the fixing plate is fixedly connected with the universal joint.
In one possible implementation manner, the universal joint comprises a first U-shaped section, a second U-shaped section and a cross section, the open ends of the first U-shaped section and the second U-shaped section are oppositely arranged and are in 90-degree torsion mutual insertion fit, two end parts of the first U-shaped section and the second U-shaped section are coaxially provided with insertion holes, the cross section is located inside the open ends of the first U-shaped section and the second U-shaped section, and four end parts of the cross section are inserted into the corresponding insertion holes.
In a possible implementation manner, the damping device comprises a damper outer sleeve, a piston rod and a piston motion chamber, wherein bottom plates are respectively arranged at two ends of the damper outer sleeve, through holes are coaxially formed in the middle of the two bottom plates, the piston motion chamber is fixedly and vertically fixed on one bottom plate, the clamp connection assembly is connected with the piston motion chamber and far away from one end of the damper outer sleeve, a movable cavity coaxially arranged with the through holes is formed in the piston motion chamber, a reset spring is sleeved at the middle of the piston rod, one end of the piston rod penetrates through the two through holes and extends into the movable cavity, a press-fit sleeve connected with the clamp connection assembly is arranged at the other end of the piston rod, and the press-fit sleeve compresses the reset spring on the bottom plate.
In a possible implementation manner, the piston rod is provided with a thread section, the thread section is located inside the damper outer sleeve barrel, a plurality of motion gears are arranged in the circumference of the thread section, gear shafts fixed to the inner wall of the damper outer sleeve barrel are respectively arranged at two axial ends of the motion gears, a plurality of motion racks are arranged in the circumference of the inner wall of the damper outer sleeve barrel, two ends of each motion rack are connected to the corresponding bottom plate through damping springs respectively, and the motion racks are arranged along the axial sliding of the damper outer sleeve barrel and meshed with the motion gears in a one-to-one correspondence manner.
In one possible implementation manner, a plurality of slide fixing piles are arranged on the circumference of the inner wall of the outer sleeve barrel of the shock absorber, the slide fixing piles are axially arranged along the outer sleeve barrel of the shock absorber, two ends of the slide fixing piles are respectively fixed on the bottom plate, a rack slide is arranged along the length direction of the slide fixing piles, and the moving racks are slidably arranged on the rack slide.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the inclined member with insufficient bearing in the power transmission tower can be reinforced according to the reinforcing requirement, so that the bending rigidity and the overall stable bearing capacity of the inclined member of the power transmission tower are effectively improved, and the overall performance of the power transmission tower is enhanced. Has better reinforcement effect.
2. According to the invention, the original inclined materials of the power transmission tower are not required to be perforated, welded and other operations, so that on one hand, the defect caused by damage to the original inclined materials is effectively avoided. On the other hand, the problem of high construction difficulty caused by great difficulty in acquiring construction electricity when the power transmission tower to be reinforced is located at the remote place is effectively avoided.
3. The damping device is connected to the transmission tower diagonal material through the clamp connecting assembly, and when vibration is caused to the transmission tower by earthquake and wind power, the damping spring in the damping device is used for damping the vibration and dissipating energy, and the damping device with the meshed gears has the advantages of high sensitivity and good damping effect. The damping device also has an auxiliary return function, so that shaking of the power transmission tower is reduced more rapidly.
4. According to the power transmission tower diagonal reinforcement damping structure, dynamic traction between two angle steel diagonal is achieved through the clamp assembly, the clamp connecting assembly, the damping device and the reinforcement diagonal, and dynamic pressure release capacity of the current angle steel diagonal in the face of earthquake and wind is solved and improved in a targeted mode, so that effective reinforcement of the power transmission tower angle steel diagonal is guaranteed.
5. The whole system of the invention is easy to install, has higher structural safety and high reliability, and does not influence the use function of the original tower material.
The invention also provides a power transmission tower, which uses the power transmission tower diagonal material reinforcing and damping structure, so that the power transmission tower diagonal material reinforcing and damping structure has the same beneficial effects as those of the power transmission tower diagonal material reinforcing and damping structure, and the power transmission tower diagonal material reinforcing and damping structure is not repeated herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a three-dimensional general assembly view of a power transmission tower diagonal reinforcement shock-absorbing structure according to the present invention;
FIG. 2 is a three-dimensional assembly view of the clamp assembly of the present invention;
FIG. 3 is an exploded view of the clamp assembly of the present invention;
FIG. 4 is a three-dimensional assembly view of the clamp connection assembly of the present invention;
FIG. 5 is an exploded view of the clamp connection assembly of the present invention;
FIG. 6 is a three-dimensional assembly view of a shock absorbing device according to the present invention;
FIG. 7 is an exploded view of a shock absorbing device according to the present invention;
FIG. 8 is an assembly view of the internal structure of the shock absorbing device according to the present invention;
fig. 9 is a cross-sectional view of a clamp assembly in accordance with the present invention.
Reference numerals illustrate:
1. The device comprises a clamp assembly, a clamp connecting assembly, a shock absorbing device, a reinforcing inclined material, a 101 original inclined material, a 102 stiffening rib, a 103L-shaped first clamp, a 104 first gasket, a 105 second gasket, a 106 fastening bolt, a 107 flat plate first clamp, a 203 connecting plate, a 204 first U-shaped section, a 205 cross section, a 206 second U-shaped section, a 210 triangular prism cushion block, a 301, a piston rod, a 302, a return spring, a 303, a bottom plate, a 304, a shock absorber jacket barrel, a 305, a piston movement chamber, a 306, a shock absorbing spring, a 307, a movement gear, a 308, a movement rack, a 309, a rack slideway, a 310, a slideway fixing pile, a 311, a gear shaft, a 312 and a fixing hole site.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal", etc. refer to the orientation or positional relationship based on that shown in the drawings, and are merely for the purpose of describing the present invention and do not require that the present invention must be constructed or operated in a specific orientation, and thus should not be construed as limiting the present invention. "connected" in the present invention should be interpreted broadly, for example, as a connection, a detachable connection, a direct connection, or an indirect connection via an intermediate member, and the specific meaning of the above terms will be understood to those skilled in the art.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this disclosure, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, an explanation will now be made on a reinforcing and damping structure for a diagonal member of a power transmission tower. The utility model provides a shock-absorbing structure is consolidated to transmission tower diagonal, including anchor clamps subassembly 1, anchor clamps coupling assembling 2, damping device 3 and consolidate diagonal 4, consolidate diagonal 4 and former diagonal 101 the same and symmetry laminating in one side of former diagonal 101, multiunit anchor clamps subassembly 1 is along the length direction interval setting in proper order of consolidating diagonal 4, with press from both sides tight reinforcement diagonal 4 and former diagonal 101, damping device 3 transversely sets up between two reinforcement diagonal 4 of alternately setting, damping device 3 possesses the elasticity degree of freedom of transversely stretching, damping device 3's both ends are connected with anchor clamps coupling assembling 2 respectively, two anchor clamps coupling assembling 2 connect two arbitrary two anchor clamps subassemblies 1 of same height of consolidating diagonal 4 of alternately setting respectively, anchor clamps coupling assembling 2 possess space pivoted degree of freedom.
The length, thickness, section size and material of the reinforcing inclined material 4 are the same as those of the original inclined material 101 of the power transmission tower, and are attached to the original inclined material 101, and the sections are arranged in a T shape.
In some embodiments, referring to fig. 2, 3 and 9, the clamp assembly 1 includes two L-shaped first clamps 103 and a flat plate first clamp 107, the two L-shaped first clamps 103 are symmetrically clamped on two sides of the vertical plates of the reinforcement diagonal member 4 and the original diagonal member 101, the flat plate first clamp 107 is attached to the back surfaces of the transverse plates of the reinforcement diagonal member 4 and the original diagonal member 101, the first ends of the two L-shaped first clamps 103 extend to the outer sides of the vertical plates of the reinforcement diagonal member 4 and the original diagonal member 101 and are connected through fastening bolts 106, and the second ends of the two L-shaped first clamps 103 extend to the outer sides of the transverse plates of the reinforcement diagonal member 4 and the original diagonal member 101 and are connected with two ends of the flat plate first clamp 107 through fastening bolts 106, respectively.
In this embodiment, a plurality of through holes are horizontally formed at two ends of the L-shaped first clamp 103, and a plurality of through holes are correspondingly formed at two ends of the same flat plate first clamp 107, so that when the two L-shaped first clamps 103 are respectively installed in the bending areas of the reinforcing inclined material 4 and the original inclined material 101, the flat plate first clamp 107 is attached to the back surfaces of the reinforcing inclined material 4 and the original inclined material 101. The first end of the L-shaped first clamp 103 extends to an end outside the vertical plate of the original inclined material 101, and the second end of the L-shaped first clamp 103 extends to an end outside the horizontal plate of the original inclined material 101. The first ends of the two L-shaped first clamps 103 are fastened by the plurality of fastening bolts 106, and the second ends of the L-shaped first clamps 103 and the ends of the flat plate first clamps 107 are fastened by the plurality of fastening bolts 106, so that the reinforcement diagonal member 4 and the raw diagonal member 101 are clamped stably.
Optionally, a first spacer 104 is sandwiched between the first ends of the two L-shaped first clamps 103, and a second spacer 105 is sandwiched between the end of the flat plate first clamp 107 and the second end of the L-shaped first clamp 103. The plurality of fastening bolts 106 penetrate through the first ends of the two L-shaped first clamps 103 and the first gaskets 104 and are locked, so that the first gaskets 104 are tightly pressed on the first ends of the two L-shaped first clamps 103, the locking force of the first ends of the two L-shaped first clamps 103 for locking the reinforcing inclined material 4 and the original inclined material 101 is improved, and stability is improved. Similarly, the second spacer 105 can also improve the locking force of the second ends of the two L-shaped first clamps 103 to fasten the reinforcing diagonal member 4 and the original diagonal member 101, and the principle is the same and will not be described again. In addition, stiffening ribs 102 are symmetrically welded in the right-angle grooves of the L-shaped first clamp 103, so that the structural strength of the L-shaped first clamp 103 is improved, and torsional deformation is prevented.
The clamp assembly 1 is completely wrapped with the T-shaped section presented by the reinforcing inclined material 4 and the original inclined material 101, the joint of the gap is realized through the gasket, the clamp is connected with the gasket through the fastening bolt 106, and the gasket is used for preventing the deformation of the clamp in the bolt fastening process. The reinforcing bevel material 4 does not need to perform operations such as punching and welding on the original bevel material 101. So as to realize reinforcement and shock absorption without damaging the original inclined material 101 and complete nondestructive reinforcement.
In some embodiments, referring to fig. 4 to 5, the fixture connection assembly 2 includes a triangular prism cushion block 210, a connection portion, and a universal joint, wherein the triangular prism cushion block 210 is clamped and fixed in a right angle groove of any L-shaped first fixture 103, the universal joint is fixed with an inclined plane of the triangular prism cushion block 210 through the connection portion, and an end portion of the shock absorbing device 3 is connected to the universal joint.
In this embodiment, the triangular prism cushion block 210 is fit and clamped in a right angle groove of one of the L-shaped first clamps 103 of the clamp assembly 1, and is locked with the L-shaped first clamp 103 by bolts on two vertical surfaces of the triangular prism cushion block 210. The connecting portion fixes the universal joint on the inclined plane of the triangular prism cushion block 210, wherein the universal joint can provide space rotation freedom degree, and can provide certain buffering when the adjacent inclined materials are twisted, so that the problem that the inclined materials are damaged due to overlarge inclined materials is avoided.
Optionally, the connecting portion includes connecting plate 203 and fixed plate, and the middle part equipartition of connecting plate 203 has a plurality of inboard connecting holes that connect triangular prism cushion 210 inclined plane with the help of fastening bolt 106, and the circumference equipartition of connecting plate 203 has a plurality of outside connecting holes that connect the fixed plate with the help of fastening bolt 106, and fixed plate fixed connection is on the universal joint.
Specifically, the universal joint includes first U type festival 204, second U type festival 206 and cross section 205, the relative setting of open end of first U type festival 204 and second U type festival 206 just is 90 and twists reverse mutual grafting cooperation, the jack has all been seted up to two tip coaxial of first U type festival 204 and second U type festival 206, cross section 205 is located the open end inside of first U type festival 204 and second U type festival 206, four tip of cross section 205 all are equipped with cylindrical inserted block, four inserted blocks correspond cartridge in four jacks, can realize damping device 3 for the space rotation of anchor clamps subassembly 1.
In some embodiments, referring to fig. 6 to 8, the shock absorbing device 3 includes a shock absorber outer sleeve 304, a piston rod 301 and a piston moving chamber 305, two ends of the shock absorber outer sleeve 304 are respectively provided with a bottom plate 303, the middle parts of the two bottom plates 303 are coaxially provided with through holes, the piston moving chamber 305 is fixedly and vertically fixed on one bottom plate 303, a clamp connecting component 2 is connected to one end of the piston moving chamber 305 away from the shock absorber outer sleeve 304, a movable chamber coaxially arranged with the through holes is arranged in the piston moving chamber 305, a reset spring 302 is sleeved at the middle part of the piston rod 301, one end of the piston rod 301 penetrates through the two through holes and extends into the movable chamber, the other end of the piston rod 301 is provided with a press-fit sleeve connected with the clamp connecting component 2, and the press-fit sleeve compresses the reset spring 302 on the bottom plate 303.
In this embodiment, the outer diameter of the press-fit sleeve is larger than the outer diameter of the piston rod 301, so that a stepped platform is formed at the joint of the press-fit sleeve and the piston rod 301, a return spring 302 is sleeved on the piston rod 301, one end of the return spring 302 abuts against the stepped platform, and the other end abuts against the bottom plate 303 of the damper outer jacket barrel 304. One end of the piston rod 301, which is far away from the press-fit sleeve, penetrates through the through hole of the damper outer sleeve 304 and extends into the movable chamber inside the piston movement chamber 305, the end of the press-fit sleeve is in threaded connection with the second U-shaped joint 206 of the corresponding universal joint, and the end of the piston movement chamber 305 is in threaded connection with the second U-shaped joint 206 of the corresponding universal joint, so that the installation and the length adjustment are convenient. When the adjacent crossed inclined materials are subjected to transverse displacement, the piston rod 301 moves axially along the movable chamber of the piston movement chamber 305 to compensate, and the return spring 302 can provide a return and buffering effect to slow down the transverse deformation of the inclined materials.
Optionally, a threaded section is provided on the piston rod 301, the threaded section is located inside the damper outer sleeve barrel 304, a plurality of moving gears 307 are provided on the circumference of the threaded section, shafts of the moving gears 307 penetrate and fix a gear shaft 311, and two ends of the gear shaft 311 are respectively fixed with fixing hole sites 312 preset on the inner wall of the damper outer sleeve barrel 304. A plurality of moving racks 308 are circumferentially arranged on the inner wall of the damper outer sleeve 304, two ends of each moving rack 308 are connected to corresponding bottom plates 303 through damping springs 306 respectively, and the moving racks 308 are slidably arranged along the axial direction of the damper outer sleeve 304 and are meshed with the moving gears 307 in a one-to-one correspondence manner.
When the adjacent crossed inclined materials are transversely displaced, the piston rod 301 moves axially along the movable cavity of the piston movement chamber 305 to compensate, at this time, the plurality of movement gears 307 meshed with the threaded sections of the piston rod 301 are opened to rotate, the movement gears 307 drive the movement racks 308 meshed with the movement gears 307 to slide along the axial direction of the damper outer sleeve 304, and the damping springs 306 at the two ends of the movement racks 308 provide elastic force opposite to the movement direction of the movement racks 308, so that the damping effect is achieved.
Specifically, a plurality of slide fixing piles 310 are circumferentially arranged on the inner wall of the damper outer sleeve 304, the slide fixing piles 310 are axially arranged along the damper outer sleeve 304, two ends of the slide fixing piles 310 are respectively fixed on the bottom plate 303, a rack slide 309 is arranged along the length direction of the slide fixing piles 310, and the moving racks 308 are slidably arranged on the rack slide 309.
In addition, in order to facilitate the disassembly and assembly of the damper outer tub 304, the damper outer tub 304 is designed as a center-split structure, forming two semicircular plates, and the two semicircular plates and the two bottom plates 303 are connected by the fastening bolts 106, thereby forming the damper outer tub 304 described above.
Based on the same inventive concept, the invention also provides a power transmission tower, which comprises the power transmission tower diagonal material reinforcing and damping structure, so that the power transmission tower diagonal material reinforcing and damping structure has the same beneficial effects as those of the power transmission tower diagonal material reinforcing and damping structure, and the description is omitted herein.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.