CN114110064A - Windproof low-temperature-resistant telescopic spring for circuit, power transmission line and method - Google Patents
Windproof low-temperature-resistant telescopic spring for circuit, power transmission line and method Download PDFInfo
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- CN114110064A CN114110064A CN202111462535.7A CN202111462535A CN114110064A CN 114110064 A CN114110064 A CN 114110064A CN 202111462535 A CN202111462535 A CN 202111462535A CN 114110064 A CN114110064 A CN 114110064A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 8
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- 229920001971 elastomer Polymers 0.000 claims description 13
- 239000000806 elastomer Substances 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 150000002739 metals Chemical class 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 229910000639 Spring steel Inorganic materials 0.000 description 7
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- 239000011572 manganese Substances 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
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- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910001065 Chromium-vanadium steel Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- -1 60Si2Mn) is added Chemical compound 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/06—Wound springs with turns lying in cylindrical surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/042—Wound springs characterised by the cross-section of the wire
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/02—Special physical effects, e.g. nature of damping effects temperature-related
Abstract
The invention provides a windproof low-temperature-resistant telescopic spring for a line, a power transmission line and a method, wherein the windproof low-temperature-resistant telescopic spring for the line comprises the following steps: the projectile comprises a first layer of projectiles and a second layer of projectiles, wherein the first layer of projectiles is connected with the second layer of projectiles, and the coefficient of thermal expansion of the first layer of projectiles is higher than that of the second layer of projectiles; the spring is divided into an inner layer and an outer layer by adopting two metals with different thermal expansion coefficients, the outer layer of the spring has a large thermal expansion coefficient, the inner layer of the spring has a small thermal expansion coefficient, the spring has large elasticity at normal temperature and high temperature, the spring is approximate to a rigid body, the length of a circuit can not be prolonged at high temperature, the spring elasticity can be reduced in winter, particularly in low-temperature environment, the circuit expands with heat and contracts with cold, the circuit can generate large tension, the circuit is extended integrally, and the phenomenon that the wire is pulled out on the circuit due to the contraction of the wire is avoided.
Description
Technical Field
The invention belongs to the technical field of power transmission lines, and particularly relates to a windproof low-temperature-resistant telescopic spring for a line, a power transmission line and a method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With global warming, the weather of strong typhoon in summer and cold tide in winter caused by the phenomena of Elnino and Ranina is increasing day by day. The requirements for line sag are provided, and the requirements for line shrinkage at the lowest temperature and the distance between lines at the strongest wind speed are met at the same time. At present, the accidents of pulling out the wire and discharging the cross arm of the wire caused by the shrinkage of the wire in severe cold weather exist, and the phenomenon that the current wire shrinks due to cold is common. By adopting the mode of temporarily reinforcing the insulator, the insulator and the cross arm can bear larger structural force, and the tower can be deformed and collapsed; the towers are re-erected, the distance between the towers is shortened, and the line transformation cost is greatly increased; and a circuit is laid again, and a larger circuit sag is reserved, so that the probability of interphase short circuit in typhoon weather can be caused. The existing anti-galloping device for solving the problem that the line can not be shrunk in winter by additionally arranging the anti-galloping device.
Disclosure of Invention
In order to solve the problems, the invention provides a windproof low-temperature-resistant expansion spring for a circuit, a power transmission line and a method.
According to some embodiments, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a wind-proof low temperature resistant extension spring for a circuit, comprising: the projectile comprises a first layer of projectiles and a second layer of projectiles, wherein the first layer of projectiles is connected with the second layer of projectiles, and the coefficient of thermal expansion of the first layer of projectiles is higher than that of the second layer of projectiles.
In one embodiment, the first layer of projectiles are outer layer projectiles and the second layer of projectiles are inner layer projectiles.
As an implementation mode, the inner side surface of the first layer projectile body is provided with a groove, two sides of the groove are provided with limiting structures, the outer side surface of the second layer projectile body is provided with a protrusion matched with the groove, the outer layer projectile body and the inner layer projectile body are connected in a matched mode through the groove and the protrusion, and the limiting structures are used for limiting the axial displacement of the second layer projectile body.
In one embodiment, the inner shell and the outer shell are coaxial spiral arcs.
In one embodiment, the outer shell has a spiral structure with a semicircular cross section, the inner shell has a spiral structure with a semicircular cross section, and the cross section of the connected extension spring is circular.
In one embodiment, the outer shell has a spiral structure with a semicircular cross section, the inner shell has a spiral structure with a semicircular cross section, and the cross section of the connected extension spring is circular.
In one embodiment, the outer shell has a spiral structure with a circular cross section, the inner shell has an outer mounting plane on an inner side of the spiral structure, the inner shell has a spiral structure with a circular cross section, the outer mounting plane is an inner mounting plane on an outer side of the spiral structure, and the outer mounting plane is connected to the inner mounting plane.
In one embodiment, the cross section of the whole extension spring after the first layer of projectile bodies and the second layer of projectile bodies are connected is 8-shaped. The length and elasticity of the first layer of projectile body and the second layer of projectile body are the same, and the first layer of projectile body is larger than the second layer of projectile body in the circumferential dimension.
As an embodiment, the outer shell body is further provided with a limiting member 3, and the limiting member 3 is located at the lower end face of the spiral structure of the outer shell body and extends from the head end to the tail end of the outer shell body; the limiting part 3 is used for driving the inner layer elastic body to be stretched synchronously.
In a second aspect, the invention provides a power transmission line, which includes the line windproof low-temperature-resistant expansion spring according to the first aspect, the line windproof low-temperature-resistant expansion spring is connected with the power transmission line, and the line windproof low-temperature-resistant expansion spring is coaxially arranged with the power transmission line.
In a third aspect, the present invention provides a working method of the wind-proof low temperature-resistant extension spring for a line according to the first aspect, including:
sequentially coaxially sleeving second-layer elastic bodies of the windproof low-temperature-resistant telescopic springs on the power transmission line;
after the sleeving is finished, welding the second layer of bullets and the first layer of bullets of the windproof low-temperature resistant telescopic springs of the plurality of lines end to end and fixedly installing the bullets on the power transmission line;
the thermal expansion coefficient of the first layer of projectile bodies is higher than that of the second layer of projectile bodies; the elasticity of the first layer of elastomer is high at normal temperature and high temperature, so that the extension of the length of the line at high temperature is avoided; under the low temperature environment, the elasticity of the second layer of elastic bodies is reduced to generate smaller tension on the circuit, so that the circuit is extended as a whole, and the phenomenon that the wire is pulled out of the circuit due to contraction is avoided.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a windproof low-temperature-resistant expansion spring for a circuit, which is characterized in that two metals with different thermal expansion coefficients are adopted to manufacture a spring divided into an inner layer and an outer layer, the outer layer of the spring has a large thermal expansion coefficient, the inner layer of the spring has a small thermal expansion coefficient, the spring has large elasticity at normal temperature and high temperature, the elasticity is approximate to a rigid body, the length of the circuit at high temperature cannot be prolonged, the elasticity of the spring is reduced in winter, particularly in low-temperature environment, and in addition, the circuit expands with heat and contracts with cold, so that the circuit generates large tension, the circuit is extended as a whole, and the phenomenon that the wire is pulled out of the circuit due to contraction is avoided.
2. The spring adopts a multi-strand bullet core hinged design, avoids sudden fracture, can find out broken wires in time, has a limit design and realizes double protection.
3. The invention also provides the power transmission line adopting the wind-proof low-temperature-resistant telescopic spring of the line, the length of the spring can be adjusted according to the length configuration of the line, the typhoon-proof cold-damp-resistant telescopic spring of the line is additionally arranged, the existing pole tower and the existing line can be utilized, the line reconstruction cost is greatly reduced, and the line reconstruction time is shortened.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural diagram of a first windproof low-temperature-resistant retractable spring for a circuit according to the present invention;
FIG. 2 is a top view of a first windproof low-temperature-resistant retractable spring for a circuit according to the present invention;
FIG. 3 is a cross-sectional view of a first wind and low temperature resistant extension spring for a circuit of the present invention;
FIG. 4 is a cross-sectional view of a second wire windproof low temperature resistant extension spring of the present invention;
wherein: 1. an outer shell; 2. an inner shell; 3. and a limiting member.
The specific implementation mode is as follows:
the invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. 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.
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 invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The first embodiment is as follows:
as shown in fig. 1, the present embodiment provides a line windproof low-temperature resistant expansion spring, which includes: the projectile comprises a first layer of projectiles and a second layer of projectiles, wherein the first layer of projectiles is connected with the second layer of projectiles, and the coefficient of thermal expansion of the first layer of projectiles is higher than that of the second layer of projectiles.
The first layer of the projectile body is an outer layer projectile body, and the second layer of the projectile body is an inner layer projectile body; in one embodiment, the outer shell has a spiral structure with a circular cross section, an outer mounting plane is disposed on an inner side of the spiral structure, the inner shell also has a spiral structure with a circular cross section, an inner mounting plane is disposed on an outer side of the spiral structure, the outer mounting plane is connected with the inner mounting plane, the outer mounting plane and the inner mounting plane can be fixedly connected or slidably connected, and the cross section of the whole connected extension spring is 8-shaped. In another embodiment, the outer shell has a spiral structure with a semicircular cross section, the inner shell has a spiral structure with a semicircular cross section, and the cross section of the connected extension spring is circular.
The inner layer projectile body 1 and the outer layer projectile body 2 are coaxial spiral circular arcs, so that the production and the processing are convenient, and the inner layer projectile body and the outer layer projectile body can be stretched relatively to set the length.
The length and elasticity of the first layer of projectile body and the second layer of projectile body are the same, and the first layer of projectile body is larger than the second layer of projectile body in the circumferential dimension.
And the surface of the first elastomer is provided with an oleophilic layer. This setting can make first body combine with oil more easily, and the oil reservoir can isolated air steam, can prevent effectively that the spring from rustting.
The inner layer elastomer is an inner layer spring made of a material with a low thermal expansion coefficient, and can be a SWOSC-V material spring, and specifically can be a TOHATSU/Dongfeng light-load spring TL 12-80.
As the outer layer spring made of the material with high thermal expansion coefficient, the outer layer elastomer can adopt silicon-manganese spring steel, and because silicon (such as 60Si2Mn) is added, the elastic limit of the steel can be obviously improved, and the tempering stability is improved. Therefore, the tempering can be carried out at higher temperature to obtain good mechanical property;
the projectile body is provided with a corrosion-resistant electroplated layer. The arrangement can effectively increase the application range of the spring.
As an alternative embodiment, a connecting line of the center of the outer spring section and the center of the inner spring section is arranged at an angle with the axial direction of the whole power transmission line, the alternative angle is 40-50 degrees, and the preferred angle is 40 degrees, as shown in fig. 4. Because there is the bending area in the circuit for there is unbalance in the outer spring and the inlayer spring atress in the bending area, in order to guarantee outer spring and inlayer spring structural stability, make the slant power that receives that can effectively resist the bending, be certain angle setting with outer spring and inlayer spring and transmission line, effectively solved the unbalanced problem of atress.
As an optional implementation manner, the line windproof low-temperature-resistant expansion spring further comprises a fracture-resistant structure, the fracture-resistant structure comprises a fracture-resistant piece, two ends of the fracture-resistant piece are respectively connected with two end faces of the outer spring, the line windproof low-temperature-resistant expansion spring can keep certain structural stability through a pull rope after the outer spring is fractured, and the fracture-resistant piece can be a flexible rope, a telescopic rigid rope or two hinged rigid rods.
As another embodiment, the anti-fracture mounting structure comprises a first mounting ring, a second mounting ring and a plurality of lines, wherein the first mounting ring and the second mounting ring are mounted on the power transmission line, a set distance is reserved between the first mounting ring and the second mounting ring, a plurality of lines are mounted between the first mounting ring and the second mounting ring, the plurality of lines are arranged around the power transmission line in the circumferential direction respectively, one ends of the plurality of lines are connected with the first mounting ring, the other ends of the plurality of lines are connected with the second mounting ring, when one of the lines is broken, the other lines can still normally work, and overall stability is provided.
As an alternative embodiment, the ends of the outer spring and the inner spring are provided with mounting holes or connectors for fitting to other structures or power lines.
The coil spring is provided with an anti-breakage end coil, the cross section of a wire of a supporting end coil (4) of the coil spring (3) is in a semi-ellipse shape, and the semi-ellipse surface of the wire of the supporting end coil (4) faces to a bearing coil (5) of the coil spring (3). The spiral spring adopts the unique supporting end ring which can form good line contact with the adjacent bearing ring, thereby obviously prolonging the service life of the spring and reducing the fatigue fracture of the spring
In one embodiment, the outer shell and the inner shell are both helical;
in one embodiment, the outer shell body and the inner shell body are fixedly connected and can be integrally formed or welded.
As an implementation mode, the medial surface that the number of turns was set for at the center of outer projectile body is equipped with the recess, and the both sides edge of recess is equipped with limit structure, and the lateral surface that the number of turns was set for at the center of inlayer projectile body is equipped with the arch, and recess and protruding cooperation make outer projectile body and inlayer projectile body cooperation be connected, and outer projectile body can stretch out and draw back certain length relative to the inlayer projectile body, and limit structure is used for the restriction protruding displacement volume, avoids the inlayer projectile body to break away from outer projectile body. The outer layer projectile body and the inner layer projectile body are connected through a groove and a protruding structure in the center, so that the two sides of the outer layer projectile body can contract or stretch for a set length relative to the inner layer projectile body. The limiting structure is a baffle plate, and the baffle plate is fixedly connected with the edge of the groove of the outer shell.
The spring is divided into an inner layer and an outer layer by adopting two metals with different thermal expansion coefficients, the outer layer of the spring has a large thermal expansion coefficient, the inner layer of the spring has a small thermal expansion coefficient, the spring has large elasticity at normal temperature and high temperature, the spring is approximate to a rigid body, the length of a circuit can not be prolonged at high temperature, the spring elasticity can be reduced in winter, particularly in low-temperature environment, the circuit expands with heat and contracts with cold, the circuit can generate large tension, the circuit is extended integrally, and the phenomenon that the wire is pulled out on the circuit due to the contraction of the wire is avoided.
The outer layer projectile body is also provided with a limiting piece 3, and the limiting piece 3 is positioned on the lower end face of the spiral structure of the outer layer projectile body and extends from the head end to the tail end of the outer layer projectile body; the limiting part 3 is used for driving the inner layer elastic body to be stretched synchronously.
The outer projectile body and the inner projectile body are both helical springs, and as an embodiment, the helical springs comprise a plurality of metal wires which are sequentially arranged, the plurality of metal wires are helical, and the plurality of metal wires are not overlapped with each other. As another real-time mode, the spiral spring adopts a multi-strand elastic core hinged design, so that sudden fracture is avoided, broken wires can be found in time, and a limit design is adopted, so that double protection is realized; the multi-strand spring core is hinged and designed into a structure that a plurality of strands of metal wires are wound in a staggered mode, the spring coils comprise wave crests and wave troughs, the wave crests of each layer of spring coils are staggered with the wave troughs of the previous layer of spring coils, and the wave troughs of each layer of spring coils are staggered with the wave crests of the next layer of spring coils.
The spring adopts the articulated design of stranded bullet core, avoids the sudden rupture, and the broken silk can in time be discover to there is the spacing design, realizes duplicate protection.
In one embodiment, the outer layer elastomer material may be carbon steel spring steel, low manganese spring steel or chrome vanadium steel.
The spring material (such as 65 steel and 70 steel) of the carbon steel spring steel has the advantages of low price, convenient raw material source and the like, and has the defects of low elastic limit, easy loss of elasticity after repeated deformation and incapability of normally working at 130 ℃.
The low manganese spring steel has the advantages of good hardenability and high strength compared with carbon spring steel (such as 65 Mn); the disadvantage is that cracks and hot shortness are easily generated after quenching.
The silicon-manganese spring steel can obviously improve the elastic limit of the steel and improve the tempering stability due to the addition of silicon (such as 60Si2 Mn). Therefore, tempering at higher temperatures is possible to obtain good mechanical properties.
Chromium vanadium steel, the purpose of adding vanadium (such as 50CrVA) to the steel is to refine the structure of the steel and improve the strength and toughness of the steel. The material has good fatigue resistance and impact resistance, and can reliably work at the temperature of-40 ℃ to 210 ℃.
The expansion coefficient of the steel material is 1.2 multiplied by 10 < -5 >/DEG C, and the length direction is increased: 100mm 1.2 10^ -5 ^ (250-20) ═ 0.276mm H7G ^ bc8, increase in width: 200mm 1.2 10-5 (250-20) 0.552 mm.
The spring is divided into an inner layer and an outer layer by adopting two metals with different thermal expansion coefficients, the outer layer of the spring has a large thermal expansion coefficient, the inner layer of the spring has a small thermal expansion coefficient, the spring has large elasticity at normal temperature and high temperature, the spring is approximate to a rigid body, the length of a circuit can not be prolonged at high temperature, the spring elasticity can be reduced in winter, particularly in low-temperature environment, the circuit expands with heat and contracts with cold, the circuit can generate large tension, the circuit is extended integrally, and the phenomenon that the wire is pulled out on the circuit due to the contraction of the wire is avoided. The spring adopts the articulated design of stranded bullet core, avoids the snap-off, and the broken silk can in time be discover to there is the spacing design, realizes duplicate protection.
Example two
The embodiment also provides a power transmission line, which comprises a plurality of the windproof low-temperature-resistant telescopic springs for the line as in the first embodiment, wherein the windproof low-temperature-resistant telescopic springs for the line are connected with the power transmission line, and the windproof low-temperature-resistant telescopic springs for the line are coaxially arranged with the power transmission line.
The windproof low-temperature-resistant telescopic spring for the line is arranged on the outer surface of the power transmission line or inside the power transmission line. The length of the windproof low-temperature-resistant telescopic spring of the circuit can be adjusted according to the length configuration of the circuit. The adoption installs the circuit additional and prevents typhoon cold tide resistant expanding spring, usable current shaft tower, current circuit reduce the circuit transformation cost by a wide margin, shorten the circuit transformation time.
As an implementation mode, the windproof low-temperature-resistant expansion spring for the line is provided with a plurality of windproof low-temperature-resistant expansion springs with adjustable sizes, the windproof low-temperature-resistant expansion springs for the line are arranged in a butt joint mode, and the expansion requirement is met.
EXAMPLE III
The embodiment provides a working method of a windproof low-temperature-resistant expansion spring for a circuit, which comprises the following steps: sequentially coaxially sleeving second-layer elastic bodies of the windproof low-temperature-resistant telescopic springs on the power transmission line; after the sleeving is finished, welding the second layer of bullets and the first layer of bullets of the windproof low-temperature resistant telescopic springs of the plurality of lines end to end and fixedly installing the bullets on the power transmission line;
the thermal expansion coefficient of the first layer of projectile bodies is higher than that of the second layer of projectile bodies; the elasticity of the first layer of elastomer is high at normal temperature and high temperature, so that the extension of the length of the line at high temperature is avoided; under the low temperature environment, the elasticity of the second layer of elastic bodies is reduced to generate smaller tension on the circuit, so that the circuit is extended as a whole, and the phenomenon that the wire is pulled out of the circuit due to contraction is avoided.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a low temperature resistant expanding spring is prevent wind to circuit which characterized in that includes: the projectile comprises a first layer of projectiles and a second layer of projectiles, wherein the first layer of projectiles is connected with the second layer of projectiles, and the coefficient of thermal expansion of the first layer of projectiles is higher than that of the second layer of projectiles.
2. The circuit wind-proof low-temperature-resistant expansion spring as claimed in claim 1, wherein the inner side surface of the first layer of projectile body is provided with a groove, the two sides of the groove are provided with a limiting structure, the outer side surface of the second layer of projectile body is provided with a protrusion matching with the groove, the outer layer of projectile body and the inner layer of projectile body are connected through matching of the groove and the protrusion, and the limiting structure is used for limiting the axial displacement of the second layer of projectile body.
3. The line wind and low temperature resistant extension spring of claim 1, wherein said first layer of elastomer is an outer layer of elastomer, said second layer of elastomer is an inner layer of elastomer, and said outer layer of elastomer and said inner layer of elastomer are coaxial spiral arcs.
4. The line windproof low-temperature-resistant expansion spring according to claim 1, wherein the outer spring and the inner spring are arranged in an angle of 40 ° to 50 ° in a matching manner.
5. The line windproof low-temperature-resistant expansion spring according to claim 1, wherein the outer spring and the inner spring are each provided with a breakage-proof end ring, the breakage-proof end ring comprises a supporting end ring, and the wire of the supporting end ring has a semi-elliptical cross section and is wound along the outer spring or the inner spring.
6. The wind and low temperature resistant extension spring for line of claim 1, wherein said first layer of elastic body is a spiral structure with a semicircular cross section, said second layer of elastic body is a spiral structure with a semicircular cross section, and the cross section of the connected extension spring is circular.
7. The wind-proof low-temperature-resistant extension spring for line of claim 1, wherein the first layer of elastic body is a spiral structure with a circular cross section, the inner side of the spiral structure is provided with an outer mounting plane, the second layer of elastic body is also a spiral structure with a circular cross section, the outer side of the spiral structure is provided with an inner mounting plane, and the outer mounting plane is connected with the inner mounting plane.
8. The wind-proof low-temperature-resistant extension spring for lines as claimed in claim 1, wherein the cross-section of the whole extension spring after the first layer of elastic bodies and the second layer of elastic bodies are connected is 8-shaped.
9. An electric transmission line, characterized by comprising the line windproof low-temperature-resistant expansion spring according to any one of claims 1 to 8, wherein the line windproof low-temperature-resistant expansion spring is connected with the electric transmission line, and the line windproof low-temperature-resistant expansion spring is coaxially arranged with the electric transmission line.
10. A method for operating a wind and cold resistant extension spring for a line according to any one of claims 1 to 8, comprising:
sequentially coaxially sleeving second-layer elastic bodies of the windproof low-temperature-resistant telescopic springs on the power transmission line;
after the sleeving is finished, welding the second layer of bullets and the first layer of bullets of the windproof low-temperature resistant telescopic springs of the plurality of lines end to end and fixedly installing the bullets on the power transmission line;
the thermal expansion coefficient of the first layer of projectile bodies is higher than that of the second layer of projectile bodies; the elasticity of the first layer of elastomer is high at normal temperature and high temperature, so that the extension of the length of the line at high temperature is avoided; under the low temperature environment, the elasticity of the second layer of elastic bodies is reduced to generate smaller tension on the circuit, so that the circuit is extended as a whole, and the phenomenon that the wire is pulled out of the circuit due to contraction is avoided.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462535.7A CN114110064A (en) | 2021-12-02 | 2021-12-02 | Windproof low-temperature-resistant telescopic spring for circuit, power transmission line and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462535.7A CN114110064A (en) | 2021-12-02 | 2021-12-02 | Windproof low-temperature-resistant telescopic spring for circuit, power transmission line and method |
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| CN114110064A true CN114110064A (en) | 2022-03-01 |
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| CN202111462535.7A Pending CN114110064A (en) | 2021-12-02 | 2021-12-02 | Windproof low-temperature-resistant telescopic spring for circuit, power transmission line and method |
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| CN (1) | CN114110064A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05263854A (en) * | 1989-12-20 | 1993-10-12 | Westinghouse Electric Corp <We> | Spring |
| CN201973147U (en) * | 2011-03-23 | 2011-09-14 | 扬州恒旺五金机械有限公司 | Spiral spring with anti-fracture end ring |
| CN106099486A (en) * | 2016-08-22 | 2016-11-09 | 深圳市华惠连接器有限公司 | The scalable contact of electric connector |
| CN209959768U (en) * | 2019-04-15 | 2020-01-17 | 佛山市梦嘉馨五金弹簧有限公司 | Memory spring structure |
| CN211624032U (en) * | 2019-12-31 | 2020-10-02 | 扬州圣林弹簧五金有限公司 | Long-life pressure spring used at high frequency |
-
2021
- 2021-12-02 CN CN202111462535.7A patent/CN114110064A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05263854A (en) * | 1989-12-20 | 1993-10-12 | Westinghouse Electric Corp <We> | Spring |
| CN201973147U (en) * | 2011-03-23 | 2011-09-14 | 扬州恒旺五金机械有限公司 | Spiral spring with anti-fracture end ring |
| CN106099486A (en) * | 2016-08-22 | 2016-11-09 | 深圳市华惠连接器有限公司 | The scalable contact of electric connector |
| CN209959768U (en) * | 2019-04-15 | 2020-01-17 | 佛山市梦嘉馨五金弹簧有限公司 | Memory spring structure |
| CN211624032U (en) * | 2019-12-31 | 2020-10-02 | 扬州圣林弹簧五金有限公司 | Long-life pressure spring used at high frequency |
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