CN112392318B - Assembled cantilever beam power transmission tower - Google Patents
Assembled cantilever beam power transmission tower Download PDFInfo
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- CN112392318B CN112392318B CN201910744843.5A CN201910744843A CN112392318B CN 112392318 B CN112392318 B CN 112392318B CN 201910744843 A CN201910744843 A CN 201910744843A CN 112392318 B CN112392318 B CN 112392318B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
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Abstract
The invention relates to the technical field of constructional engineering, in particular to an assembled cantilever beam power transmission tower. The utility model provides an assembled cantilever beam power transmission tower, including two cantilever beams and four stands, the length direction along the stand between four stands is provided with the multilayer back up coat, the back up coat is including connecting the horizontal pole between two adjacent stands, be provided with the diagonal brace that is the X type along diagonal direction between two adjacent horizontal poles on the length direction of stand, two cantilever beams erect respectively on two stand tops of mutually opposing, the bottom of cantilever beam is connected with the power dissipation pole, the both ends of power dissipation pole are connected respectively on the stand of mutually opposing that is located the both sides of cantilever beam, be connected with the brace between the top of two cantilever beams, the top of cantilever beam is connected with the stand top that is located the cantilever beam both sides respectively through two braces, the bottom of two cantilever beams is passed through the ejector pin and is connected. The invention has excellent bearing capacity and torsion resistance, and the material consumption is small during construction.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an assembled cantilever beam power transmission tower.
Background
In the information age of rapid development nowadays, transmission towers have become important transferors of energy in this age, and are important strategic equipment for modern development of the country. At present, the assembly type building is vigorously developed in China, a simple construction mode and material consumption reduction are taken as development directions, so that the construction of the power transmission tower also meets the national development trend, and the power transmission tower is light in weight, high in strength, stable in structure and high in practicability and meets the construction requirements of the power transmission tower.
The transmission tower is mainly used for supporting a high-voltage power transmission line, and the structure of the existing solid transmission tower mainly uses an equal limb angle steel and is connected through bolts. Power transmission towers are generally classified into guyed towers and self-supporting towers according to their stress characteristics and stability. The tower is mainly characterized in that the tower body is rigidly connected or semi-rigidly connected with the foundation, the tower is fixed mainly through the stay wires when the stress balance and stability are realized, the use amount of required materials can be reduced by utilizing the tensile property characteristics of the steel strands in the erecting process, but the improvement on the aspects of relevant theories, stability, occupied area, structural displacement and the like is needed. The self-standing iron tower is obviously different from a stay-supported iron tower, and is mainly characterized in that a tower body and a foundation are rigidly fixed, so that the force borne by the tower is transmitted to the foundation.
The existing power transmission tower structure has low stability and large material consumption during construction.
For example, Chinese patent publication numbers are: CN204850645U, an extra-high voltage power transmission tower announced in 2015, 12 months and 9 days, which comprises a tower body and a power transmission assembly arranged on the tower body, wherein the tower body is of a frame structure formed by connecting main materials, inclined materials and transverse materials vertically arranged with the main materials in a staggered manner, and the main materials consist of angle steel with 300 mm-level limb width; the power transmission assembly comprises a framework body arranged at the top end of the tower body, a cross arm perpendicular to the framework body and ground wire supports arranged at the upper end of the cross arm respectively. Although the utility model discloses a not only can satisfy special high voltage transmission or with many times transmission of electricity on tower, still possess to take up an area of for a short time, construction convenience's advantage, but stability is not high, and the material quantity is big when building moreover.
Disclosure of Invention
The invention mainly aims at the problems that the structure of the existing power transmission tower is not high in stability and the material consumption is large during construction, and provides the assembled cantilever beam power transmission tower which is high in stability, excellent in bearing capacity and torsion resistance and small in material consumption during construction.
The purpose of the invention is mainly realized by the following scheme: an assembled cantilever beam power transmission tower comprises two cantilever beams and four upright posts, wherein a plurality of reinforcing layers are arranged between the four upright posts along the length direction of the upright posts, the reinforcing layer comprises cross bars connected between two adjacent upright posts, an X-shaped diagonal brace is arranged between two adjacent cross bars along the length direction of the upright posts along the diagonal direction, two cantilever beams are respectively erected at the top ends of two opposite upright posts, the bottom of the cantilever beam is connected with an L-shaped force dispersing rod, two ends of the force dispersing rod are respectively connected with the opposite upright posts at two sides of the cantilever beam, a top brace is connected between the top ends of the two cantilever beams, the top of the cantilever beam is connected with the top ends of the stand columns on two sides of the cantilever beam through two side brace respectively, the bottom ends of the two cantilever beams are connected through a top rod, and the angle between the cantilever beam and the vertical direction is 45 degrees. The multi-layer reinforced layer is arranged between the four upright posts along the length direction of the upright posts, the reinforced layer comprises transverse rods connected between two adjacent upright posts, the four upright posts are fixed together by the reinforced layer to form an integral frame with good torsion resistance, X-shaped oblique braces are arranged between two adjacent transverse rods along the length direction of the upright posts along the diagonal direction, the oblique braces can resist structural deformation caused by bending moment and torque, the stability of the integral frame structure is ensured, the stress capacity of the integral frame is greatly increased, the two cantilever beams are respectively erected at the top ends of the two opposite upright posts, the bottom parts of the cantilever beams are connected with L-shaped stress dispersion rods, two ends of the stress dispersion rods are respectively connected with the opposite upright posts at the two sides of the cantilever beams, the end parts of the stress dispersion rods are connected with nodes connected with the transverse rods and the upright posts, and top ends of the two cantilever beams are connected with top braces, the top ends of the cantilever beams are respectively connected with the top ends of the stand columns on two sides of the cantilever beams through two side bracing pieces, the bottom ends of the two cantilever beams are connected through an ejector rod, the cantilever beams can generate a lever effect when receiving vertical force and horizontal component force, the horizontal component force is dissipated through the top bracing pieces and the ejector rod, the top bracing pieces are pulled to generate tensile force, the ejector rod is pressed to generate pressure, the damage generated by the lever effect can be relieved, the force dissipating rods are pressed to disperse vertical acting force to the stand columns on two sides, the vertical force passing through the side bracing pieces and the force dissipating rods is dispersed to the four stand columns to generate pressure, the stand columns connected with the cantilever beams receive the main pressure, the side bracing pieces can disperse the acting force in the horizontal direction to the stand columns on two sides of the cantilever beams and generate tensile force to the stand columns; the force dispersing rod can disperse horizontal acting force to the upright post and the diagonal brace, the upright post bears vertical pressure, the diagonal brace bears tensile force, the stability of the structure can be ensured, the arrangement of the top brace and the ejector rod can reduce the damage of bending moment generated by the acting force in the horizontal direction to the overhanging cantilever beam, when the horizontal acting force of the two top ends of the cantilever beam is the same as the direction, the cantilever beam is transmitted to an integral frame formed by the upright post and the transverse rod by being pulled and pressed through the side brace, and bending moment is generated on the integral frame; when the horizontal acting force and the direction of the two top ends of the cantilever beam are not identical, the cantilever beam is transmitted to the integral frame through the tension of the side brace and the compression of the force dispersing rod and generates torque to the integral frame, the integral frame resists structural deformation generated by bending moment and torque through the compression of the cross rod and the tension of the inclined brace, the stability of the power transmission tower structure is ensured, the angle between the cantilever beam and the vertical direction is 45 degrees, and the working benefit of the cantilever beam can be fully exerted.
Preferably, the two ends of the cross rod are provided with lugs, and the upright post is provided with jacks corresponding to the lugs. The both ends of horizontal pole are provided with the lug, correspond the lug on the stand and be provided with the jack, insert the jack that corresponds on the stand with the lug on the horizontal pole, can realize the stable connection of horizontal pole and stand.
Preferably, the angle between the diagonal draw bars and the connected cross bars is 45 degrees. The angle between the diagonal draw bars and the cross rods connected with the diagonal draw bars is 45 degrees, so that the torsion generated by the tension in the horizontal direction and the structural deformation generated by the bending moment can be well resisted, the stability of the whole frame is good, and the effectiveness of the brace is fully exerted.
Preferably, the ejector pin including the casing that has the inner chamber, the inner chamber in be provided with the buffer beam, the both ends of buffer beam all be provided with the buffer block, the equal sliding connection in both sides of inner chamber have the slider, the lateral wall of slider on correspond the buffer block and be provided with the dashpot, the lateral wall of buffer block and corresponding dashpot between be connected with reset spring, the slider one side of keeping away from the buffer block be provided with the connecting rod, two connecting rods are connected respectively in the bottom of corresponding cantilever beam. The ejector pin is including the casing that has the inner chamber, the intracavity is provided with the buffer beam, the both ends of buffer beam all are provided with the buffer block, the equal sliding connection in both sides of inner chamber has the slider, it is provided with the dashpot to correspond the buffer block on the lateral wall of slider, be connected with reset spring between the lateral wall of buffer block and corresponding dashpot, one side of keeping away from the buffer block of slider is provided with the connecting rod, the bottom at corresponding cantilever beam is connected respectively to two connecting rods, when the cantilever beam atress, can produce certain pressure to the connecting rod, thereby the connecting rod receives the pressure and drives the slider including the intracavity and overcome reset spring's spring force and slide, reset spring's setting can cushion the external force that the cantilever beam received well, thereby can alleviate the destruction that the overhanging pair cantilever beam of bending moment that produces because of horizontal direction effort caused.
Preferably, the buffer block is in a circular truncated cone shape with an area gradually increasing towards one side close to the buffer rod, and the shape of the buffer groove is matched with that of the buffer block. The buffer block is toward being close to the increasing round platform shape of buffer beam side area, the shape of dashpot and the shape phase-match of buffer block, when slider initial movement, the buffer block that drives correspondence through buffer spring's in this slider removes, when buffer spring's elasticity is not enough to drive the buffer block and remove, the buffer block can support on the lateral wall of dashpot, direct this moment promotes the buffer block through the slider and removes, the shape design of this buffer block can play certain guard action to buffer spring, prevent that buffer spring atress deformation is too big and impaired, service life is prolonged.
Preferably, the cross section of the upright post is square. The cross section of stand is square, and the shape is comparatively regular, the installation of being convenient for.
Preferably, the connecting rod is welded on the cantilever beam. The connecting rod welding is on the cantilever beam, connects firmly long service life.
Preferably, the lower surface of the shell is provided with an exhaust hole communicated to the inner cavity. The lower surface of the shell is provided with an exhaust hole communicated to the inner cavity, so that air pressure in the inner cavity is balanced when the sliding block moves, and the safety is high.
Therefore, the assembled cantilever beam power transmission tower has the following advantages: the invention has the advantages of simple structure, high stability, excellent bearing capacity and torsion resistance, small material consumption during construction, convenient construction and long service life.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the column of the present invention.
Fig. 3 is a schematic structural view of a cross bar in the present invention.
FIG. 4 is a schematic diagram of the structure of the cantilever beam and the force-dissipating bar of the present invention.
FIG. 5 is a sectional view of the carrier rod of the present invention.
Illustration of the drawings: 1-upright post, 2-cross rod, 3-diagonal brace, 4-cantilever beam, 5-force dispersing rod, 6-side brace, 7-top brace, 8-top rod, 9-jack, 10-lug, 11-inner cavity, 12-buffer rod, 13-reset spring, 14-buffer groove, 15-buffer block, 16-shell, 17-slide block, 18-connecting rod and 19-exhaust hole.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1:
as shown in fig. 1, 2, 3 and 4, an assembled cantilever beam 4 power transmission tower comprises two cantilever beams 4 and four upright posts 1, wherein the cross section of each upright post 1 is square, the shape is regular and convenient to install, a plurality of reinforcing layers are arranged between the four upright posts 1 along the length direction of each upright post 1, each reinforcing layer comprises a cross rod 2 connected between the two adjacent upright posts 1, the four upright posts 1 are fixed together by the reinforcing layers to form an integral frame with good torsion resistance, convex blocks 10 are arranged at two ends of each cross rod 2, jacks 9 are arranged on the upright posts 1 corresponding to the convex blocks 10, the convex blocks 10 on the cross rods 2 are inserted into the corresponding jacks 9 on the upright posts 1, so that the stable connection between the cross rods 2 and the upright posts 1 can be realized, bolt holes can be correspondingly arranged on the convex blocks 10 and the upright posts 1, and the stability of the integral frame can be greatly improved through the bolt fixed connection, an X-shaped oblique brace 3 is arranged between two adjacent cross rods 2 along the length direction of the upright post 1 along the diagonal direction, the oblique brace 3 can resist structural deformation caused by bending moment and torque, the stability of the whole frame structure is ensured, the stress capacity of the whole frame is greatly increased, the angle between the oblique brace 3 and the cross rods 2 connected with each other is 45 degrees, so that the utility of the brace is fully exerted, two cantilever beams 4 are respectively erected at the top ends of the two opposite upright posts 1, the bottom of each cantilever beam 4 is connected with an L-shaped force dispersing rod 5, two ends of each force dispersing rod 5 are respectively connected to the opposite upright posts 1 at two sides of the cantilever beam 4, the end part of each force dispersing rod 5 is connected to a node where the cross rod 2 is connected with the upright post 1, a top brace 7 is connected between the top ends of the two cantilever beams 4, the top ends of the cantilever beams 4 are respectively connected with the top ends of the upright posts 1 at two sides of the cantilever beams 4 through two side braces 6, the bottom ends of the two cantilever beams 4 are connected through a top rod 8, when the cantilever beams 4 are subjected to vertical force and horizontal component force, a lever effect can be generated, the horizontal component force is dissipated through a top brace 7 and the top rod 8, the top brace 7 is pulled to generate tensile force, the top rod 8 is pressed to generate pressure, the damage generated by the lever effect can be reduced, at the moment, the force dissipation rod 5 is pressed to disperse the vertical acting force to the stand columns 1 on the two sides, the vertical force generated by the side brace 6 and the force dissipation rod 5 is dispersed to the four stand columns 1 to generate pressure, the stand columns 1 connected with the cantilever beams 4 receive main pressure, the side brace 6 can disperse the acting force in the horizontal direction to the stand columns 1 on the two sides of the cantilever beams 4 and generate tensile force to the stand columns 1; the force dispersing rod 5 can disperse horizontal acting force to the upright post 1 and the diagonal brace 3, the upright post 1 bears vertical pressure, the diagonal brace 3 bears tension and can ensure the stability of the structure, the arrangement of the top brace 7 and the ejector rod 8 can reduce the damage of bending moment generated by the acting force in the horizontal direction to the overhanging cantilever beam 4, when the horizontal acting force of the two top ends of the cantilever beam 4 is the same as the direction, the cantilever beam 4 is transmitted to an integral frame formed by the upright post 1 and the cross rod 2 by being pulled and pressed by the force dispersing rod 5 through the side brace 6, and bending moment is generated on the integral frame; when the horizontal acting force and the direction of the two top ends of the cantilever beam 4 are not identical, the cantilever beam 4 is pulled through the side brace 6 and is pressed by the force dispersion rod 5 to be transmitted to the whole frame and generate torque to the whole frame, the whole frame resists structural deformation generated by bending moment and torque through the compression of the cross rod 2 and the tension of the diagonal brace 3, the stability of the power transmission tower structure is ensured, the angle between the cantilever beam 4 and the vertical direction is 45 degrees, and the working benefit of the cantilever beam 4 can be fully exerted.
As shown in fig. 5, the top rod 8 includes a housing 16 having an inner cavity 11, a buffer rod 12 is disposed in the inner cavity 11, buffer blocks 15 are disposed at both ends of the buffer rod 12, sliders 17 are slidably connected to both sides of the inner cavity 11, buffer slots 14 are disposed on the side walls of the sliders 17 corresponding to the buffer blocks 15, a return spring 13 is connected between the buffer blocks 15 and the side walls of the corresponding buffer slots 14, a connecting rod 18 is disposed on one side of the slider 17 away from the buffer blocks 15, the two connecting rods 18 are respectively connected to the bottom ends of the corresponding cantilever beams 4, the connecting rod 18 is welded to the cantilever beams 4, the connection is stable, the service life is long, when the cantilever beams 4 are stressed, a certain pressure is generated on the connecting rod 18, the connecting rod 18 is stressed to drive the slider 17 to slide in the inner cavity 11 and overcome the spring force of the return spring 13, the return spring 13 is disposed to well buffer the external force applied to the cantilever beams 4, thus, the damage of the cantilever beam 4 caused by the bending moment generated by the horizontal acting force can be reduced.
The lower surface of the shell 16 is provided with an exhaust hole 19 communicated with the inner cavity 11, so that air pressure in the inner cavity 11 is balanced when the sliding block 17 moves, and the safety is high.
It should be understood that this example is only for illustrating the present invention and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (6)
1. An assembled cantilever beam power transmission tower is characterized by comprising two cantilever beams and four upright posts, wherein a plurality of reinforcing layers are arranged between the four upright posts along the length direction of the upright posts, the reinforcing layer comprises cross bars connected between two adjacent upright posts, an X-shaped diagonal brace is arranged between two adjacent cross bars along the length direction of the upright posts along the diagonal direction, two cantilever beams are respectively erected at the top ends of two opposite upright posts, the bottom of the cantilever beam is connected with an L-shaped force dispersing rod, two ends of the force dispersing rod are respectively connected with the opposite upright posts at two sides of the cantilever beam, a top brace is connected between the top ends of the two cantilever beams, the top ends of the cantilever beams are respectively connected with the top ends of the stand columns positioned at two sides of the cantilever beams through two side brace rods, the bottom ends of the two cantilever beams are connected through a top rod, and the angle between the cantilever beams and the vertical direction is 45 degrees; the ejector rod comprises a shell with an inner cavity, a buffer rod is arranged in the inner cavity, buffer blocks are arranged at two ends of the buffer rod, sliding blocks are connected to two sides of the inner cavity in a sliding mode, buffer grooves are formed in the side walls of the sliding blocks corresponding to the buffer blocks, reset springs are connected between the buffer blocks and the side walls of the corresponding buffer grooves, connecting rods are arranged on one sides of the sliding blocks, far away from the buffer blocks, and the two connecting rods are connected to the bottom ends of the corresponding cantilever beams respectively; the buffer block is in a round table shape with an area gradually increasing near one side of the buffer rod, and the shape of the buffer groove is matched with that of the buffer block.
2. The assembled cantilever beam transmission tower of claim 1, wherein the cross bar has projections at both ends and the posts have receptacles corresponding to the projections.
3. The fabricated cantilever beam transmission tower of claim 1, wherein the angle between the diagonal member and the connecting cross member is 45 degrees.
4. The assembled cantilever beam transmission tower of claim 1, 2 or 3, wherein the cross-section of the column is square.
5. The fabricated cantilever beam power transmission tower of claim 4, wherein the connecting rod is welded to the cantilever beam.
6. The fabricated cantilever beam transmission tower of claim 4, wherein the lower surface of the housing is provided with a vent hole communicating to the internal cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910744843.5A CN112392318B (en) | 2019-08-13 | 2019-08-13 | Assembled cantilever beam power transmission tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910744843.5A CN112392318B (en) | 2019-08-13 | 2019-08-13 | Assembled cantilever beam power transmission tower |
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| CN112392318A CN112392318A (en) | 2021-02-23 |
| CN112392318B true CN112392318B (en) | 2022-04-05 |
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