A kind of transmission line of electricity lattice type pole
Technical field
The present invention relates to a kind of transmission line of electricity pole, be specifically related to a kind of transmission line of electricity lattice type pole.
Background technology
At present, the construction of domestic transmission line construction tower erection mainly contains two kinds of tubular type and lattices by the body of rod pattern of pole, and lattice type pole is conducted oneself with dignity lighter under same supporting capacity than monomer pillar, and longitudinal stability is better, and flexural strength is large, and lateral deformation is little.
Have steel standard knot and aluminum standard that pole is generally used with material save.Steel density is large, and the pole of making is heavier, is unfavorable for mounting or dismounting and carrying.Aluminium density is relatively little, and after the pole of making connects steel flange, weight increases, and is not easy to the severe regional work transmission line construction of artificial installation and carrying, the particularly mountain area of physical features complexity and environment; Along with the progress of material science, galss fiber reinforced resin based composites is that glass fiber reinforced plastic is applied to pole gradually, but glass fiber reinforced plastic pole exists following shortcoming:
(1) modulus of elasticity is low: the modular ratio steel of glass fiber reinforced plastic is little 5 times, and rigidity is lower.
(2) the heatproof phase is not long: glass fiber reinforced plastic generally can not at high temperature be used for a long time, and for example general purpose polyester glass fiber reinforced plastic is general only 100 ℃ of following uses; Universal fiber glass epoxy is more than 60 ℃, but intensity has obvious decline.
(3) easily aging: under the effects such as ultraviolet ray, wind sand sleet, chemical mediator, mechanical stress, performance easily declines.
Summary of the invention
The object of this invention is to provide the transmission line of electricity lattice type pole that a kind of intensity is high, lightweight, made by carbon fiber enhancement resin base composite material.
Concrete scheme of the present invention is: a kind of transmission line of electricity lattice type pole, described lattice type pole is by the base that suspends, standard knot and pulley connect to form in turn, the two ends of described standard knot are provided with tapering point joint, described standard knot and end joint are comprised of multiple joint bodies, described joint body is to be made by carbon fiber enhancement resin base composite material, between adjacent segments body, by flange, connect, the joint body of described standard knot comprises by the inclined tube between four of rectangular arrangement vertical supervisors and adjacent supervisor, described end joint joint body comprises by the inclined tube between four supervisors of tapered arrangement and adjacent supervisor, described flange comprises rectangular base and is arranged on the intubate of four jiaos of described rectangular base, the supervisor of described standard knot and end joint inserts respectively in described intubate bonding by glue.
Adopt technique scheme, technique effect of the present invention has:
Pole in the present invention adopts carbon fiber enhancement resin base composite material to make, and its tool has the following advantages:
(1) there is high specific strength and specific modulus; Density is low, and its intensity is 4 times of left and right of high strength steel and aluminium alloys, 2 times of glass fiber reinforced plastic; Specific modulus is 3 times of glass fiber reinforced plastic.
(2) endurance; Under static state, carbon fiber enhancement resin base composite material circulation 105 times, just destroyed while bearing 90% ultimate strength stress, and steel can only bear 50% left and right of ultimate strength.
(3) coefficient of thermal expansion is little; The thermalexpansioncoefficientα of carbon fiber has significant anisotropy, makes the α of its composite material also have anisotropy.
(4) wear-resisting wiping, resistance to wears; Carbon fiber enhancement resin base composite material has good fatigue-resistance characteristics, coefficient of thermal expansion is little and thermal conductivity is high characteristic, the wear-resisting wiping of tool, wear-resistant key property.
(5) good corrosion resistance.The corrosion resistance of carbon fiber is very excellent, and in acid, alkali, salt and solvent, long-term immersion can swellingly not gone bad.
(6) water-tolerant.Carbon fiber enhancement resin base composite material can be used for a long time in wet environment and water.General higher along the strength retention of machine direction, lower perpendicular to the conservation rate of machine direction.
(7) good conductivity; Carbon fiber has electric conductivity.
Pole in the present invention has adopted pipe as main and auxiliary material, has reduced the impact of wind load on stability; Integrated member adopts assembling design, and multiple joint body connects by flange, according to different lifting capacities, requires design standard moulds, is convenient to realize mass production, facilitates processing and manufacturing; The present invention adopts software ANSYS element of construction optimal design, has reduced pole sectional dimension and weight, is convenient to mountain area transportation and uses.
Accompanying drawing explanation
Fig. 1 is the structural representation of lattice type pole of the present invention;
Fig. 2 is the connection diagram of supervisor of the present invention and flange;
Fig. 3 is flange arrangement schematic diagram of the present invention;
Fig. 4 is flange top view of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of transmission line of electricity lattice type pole, described lattice type pole is by the base 7 that suspends, standard knot 1 and pulley 6 connect to form in turn, the two ends of described standard knot 1 are provided with tapering point joint, described end joint comprises upper end joint 2 and lower end joint 3, described upper end joint 2, standard knot 1, lower end joint 3 is comprised of multiple joint bodies, between adjacent segments body, by flange 4, connect, as shown in Figure 3 and Figure 4, described flange 4 comprises rectangular base 8 and is arranged on the intubate 5 of four jiaos of described rectangular base, described intubate 5 is preferably aluminium alloys, described upper end joint 2, standard knot 1, the supervisor of lower end joint 3 inserts respectively in described intubate 5 bonding by epoxy glue, described intubate 5 surroundings are provided with the bolt hole 9 that is fan-shaped layout, between the flange 4 of adjacent segments body, be bolted, one end of described rectangular base 8 limit portions is provided with anchor ear, and the two ends of described inclined tube are fastened in the anchor ear that is axially diagonal layout, the material that described flange 4 preferably adopts is steel Q345, the joint body of described standard knot 1 comprises by the inclined tube between four of rectangular arrangement vertical supervisors and adjacent supervisor, described inclined tube is diagonal setting between adjacent supervisor, between the joint body of described standard knot 1, by flange 4, connect, and the intubate in this flange 5 vertically arranges, the joint body of described lower end joint 3 comprises by the inclined tube between four supervisors of tapered arrangement and adjacent supervisor, described tapered arrangement is to be responsible for from top to bottom to gather, described inclined tube is diagonal setting between adjacent supervisor, between the joint body of described lower end joint 3, by flange 4, connect, and these flange 4 mouths of pipe intubate is upward outward-dipping, mouth of pipe intubate down slopes inwardly, and makes the intubate of flange 4 be oriented an oblique line, the joint body of described upper end joint 2 comprises by the inclined tube between four supervisors of tapered arrangement and adjacent supervisor, described tapered arrangement is to be responsible for from the bottom to top to gather, described inclined tube is diagonal setting between adjacent supervisor, between the joint body of described upper end joint 2, by flange 4, connect, and these flange 4 mouths of pipe intubate upward slopes inwardly, mouth of pipe intubate is down outward-dipping, and makes the intubate of flange 4 be oriented an oblique line, described suspension base 7 comprises chassis and is arranged on the channel-section steel on chassis, in described channel-section steel, is provided with pulley, the material that described pulley 6 adopts is steel Q235, described supervisor is made by winding shaping process by carbon fiber enhancement resin base composite material, described inclined tube is to be made by pultrusion molding process by carbon fiber enhancement resin base composite material, and described carbon fiber enhancement resin base composite material comprises carbon fiber and epoxy resin two parts.
Below in conjunction with concrete test, lattice type pole of the present invention is described further, the dimensional parameters of the lattice type pole of testing is as shown in table 1:
The dimensional parameters of table 1 lattice type pole
Performance |
Value |
Mobile jib external diameter (mm) |
70 |
Mobile jib wall thickness (mm) |
5 |
Auxiliary bar external diameter (mm) |
40 |
Auxiliary bar wall thickness (mm) |
2.5 |
Bottom section width (mm) |
240 |
Middle part breadth of section (mm) |
480 |
Top cross-section width (mm) |
240 |
Bottom cone segment length (m) |
4 |
Apex cone segment length (m) |
4 |
Middle segment length (m) |
4×3 |
[0028]first testing post is by the maximum axial pressure being produced by hoisting heavy, if consider the impact of rope, pulley and other annexes of pole top, the quality summation of getting these objects is 500kg, and the axial pressure of pole is:
N’=N+500*9.8
In formula, the COMPREHENSIVE CALCULATING pressure that N is pole, the data of pole under different angle are as table 2:
The aggregation of table 2 pole data result
The present invention adopts carbon fiber enhancement resin base composite material, and the physical and mechanical properties of itself and steel, aluminium alloys is more as shown in table 3:
The physical and mechanical properties comparison of table 3 composite material and steel, aluminium alloys
As can be seen from Table 3, the combination property of carbon fiber enhancement resin base composite material is more excellent than glass fiber reinforced plastic, and specific strength exceedes 20 times of steel, is 7 times of aluminium alloys, 2 times of glass fiber reinforced plastic.Modulus of elasticity is 2.5 times of glass fiber reinforced plastic.Therefore, adopt carbon fiber enhancement resin base composite material to manufacture pole.
Supervisor in the present invention is made by winding shaping process by carbon fiber enhancement resin base composite material; Supervisor's mechanical property parameters of making by winding shaping process is as shown in table 4:
The Wrapping formed mechanical property parameters of table 4
Inclined tube in the present invention is to be made by pultrusion molding process by carbon fiber enhancement resin base composite material; The inclined tube mechanical property parameters of making by pultrusion molding process is as shown in table 5:
Table 5 pultrusion mechanical property parameters
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not depart from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.