CN110723032A - Novel insulating dropper applied to electrified railway - Google Patents
Novel insulating dropper applied to electrified railway Download PDFInfo
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- CN110723032A CN110723032A CN201911059725.7A CN201911059725A CN110723032A CN 110723032 A CN110723032 A CN 110723032A CN 201911059725 A CN201911059725 A CN 201911059725A CN 110723032 A CN110723032 A CN 110723032A
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- dropper
- wire
- line
- novel
- insulating
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- 229920006231 aramid fiber Polymers 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract 2
- 239000000835 fiber Substances 0.000 claims description 30
- 239000000725 suspension Substances 0.000 claims description 22
- 229920000271 Kevlar® Polymers 0.000 claims description 5
- 229920001494 Technora Polymers 0.000 claims description 5
- 229920000561 Twaron Polymers 0.000 claims description 5
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 5
- 239000004761 kevlar Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 239000004950 technora Substances 0.000 claims description 5
- 239000004762 twaron Substances 0.000 claims description 5
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 239000004962 Polyamide-imide Substances 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 4
- 229920002312 polyamide-imide Polymers 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 239000004760 aramid Substances 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 239000002657 fibrous material Substances 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000010892 electric spark Methods 0.000 abstract description 4
- 239000011810 insulating material Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920003368 Kevlar® 29 Polymers 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
- B60M1/23—Arrangements for suspending trolley wires from catenary line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
- B60M1/24—Clamps; Splicers; Anchor tips
Abstract
The invention provides a novel insulating dropper applied to an electrified railway, and belongs to the technical field of electrified railway contact network equipment. The device comprises a dropper line connected to a carrier cable, wherein the other end of the dropper line is connected with a dropper wire clamp, the dropper wire clamp is connected with a contact wire, and the dropper line is an insulation type dropper line. The aramid fiber material and the aramid fiber composite material are used as materials of the dropper wire, so that the tensile strength and the flexibility are improved, the working temperature range is expanded, and the dropper has small expansion coefficient and is more wear-resistant; the insulating material has excellent insulating property, so that normal operation current and short-circuit current on a contact wire can not flow through a dropper any more, electric sparks and electric arcs can not be generated at the position of a central ring of the dropper wire, a current-carrying ring is removed, and the structure of the dropper is simplified; the adoption of the aramid fiber material with ultra-light density and low modulus can improve the current collection quality of the bow net, and the slidable dropper structure can reduce the length of the dropper, further reduce the mass of the dropper, prolong the service life and reduce the operation and maintenance cost.
Description
Technical Field
The invention relates to the technical field of electrified railway contact net equipment, in particular to a novel insulating dropper which is long in service life, improves pantograph-catenary current collection quality and is applied to an electrified railway.
Background
With the continuous development of the operation mileage and the continuous improvement of the operation speed of the electrified railway in China, the safe and reliable operation of the contact network becomes the most important task of the electrified railway. The dropper is a transmitter of force and vibration between the carrier cable and the contact line, and has important significance for improving the rigidity distribution of the contact net and improving the current collection quality between bow nets.
The working environment of the electrified railway is complex, and the contact network equipment not only needs to bear the impact and vibration of the train in high-speed operation and the thermal erosion of the contact network current and experience the severe natural environments of wind, rain, snow, high temperature, sunshine and the like, but also needs to bear the impact and vibration of the train in high-speed operation and the thermal erosion of the contact network current. In the actual operation process, the broken strand and the broken wire of the dropper occur, and the breakage condition is counted and found: 13.6% of the dropper breaks occur at the crimp, 18.2% at the mid-dropper, and 68.2% at the heart ring of the dropper. The main causes of dropper breakage are the following: the increase of the operation speed of the electrified railway increases the current-carrying capacity of a contact network, the contact resistance of the joint of a contact line and a dropper is large, and the normal operation current and the short-circuit current generate thermal erosion on the dropper; when the pantograph passes through, the contact net vibrates, electric sparks and even electric arcs are easy to occur between the dropper wire clamp and the dropper heart-shaped ring, and the dropper wire is easy to ablate; when the pantograph moves at a high speed, the vibration of the contact line is more severe, the dropper instantly descends after the pantograph passes through the contact line, and the dropper is broken when the critical value of the breaking force of the dropper is reached; the flexibility and fatigue resistance of the dropper are poor, and the dropper is easy to break at the compression joint after being repeatedly bent; the crossing environment of the high-speed railway is complex, the corrosion of the hanger can be accelerated under severe environments such as acid-base, sunshine, high temperature and the like, the mechanical strength of the hanger is reduced to a certain extent, and the breakage of the hanger is caused.
The Chinese patent with application number 201610492721.8 discloses a composite dropper wire and a dropper for an overhead contact system of an electrified railway, but the tensile strength of the dropper is only simply increased, the abrasion resistance, arc ablation and environmental corrosion of the dropper are not considered, the problem of breakage of the dropper is not comprehensively improved, and the current collection quality of the pantograph-catenary is not improved from the viewpoint of reducing the density and Young modulus of the dropper.
Disclosure of Invention
The invention aims to provide a novel insulating dropper applied to an electrified railway, which has the characteristics of light weight and low modulus, can improve the rigidity distribution of a contact net and the contact pressure between pantograph-catenary and improve the current collection quality of the pantograph-catenary, so as to solve at least one technical problem in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a novel insulating dropper applied to an electrified railway, which comprises a dropper line connected to a carrier cable, wherein the other end of the dropper line is connected with a dropper wire clamp, the dropper wire clamp is connected with a contact wire, and the dropper line is an insulating dropper line.
Preferably, the dropper wire is braided from a plurality of insulating monofilaments.
Preferably, the insulating monofilament is one or more of aramid fiber, nylon fiber, polyester fiber or ultra-high molecular weight polyethylene fiber.
Preferably, the aramid fiber is Kevlar fiber, Twaron fiber, Technora fiber or Taparan fiber.
Preferably, the dropper wire is slidably connected to the carrier line.
Preferably, the dropper is in an annular band shape, one end of the annular dropper is sleeved on the carrier cable, and the other end of the annular dropper is sleeved on the dropper wire clamp.
Preferably, the free end of the dropper is connected with the dropper wire clamp through a snap ring to form a ring buckle after being bent, the ring buckle at the upper end is sleeved on the carrier cable in a sliding mode, and the ring buckle at the lower end is connected with the dropper wire clamp.
Preferably, the carrier cable is sleeved with an insulating sleeve in a sliding manner, a ring buckle at the upper end of the dropper is sleeved on the insulating sleeve, and a ring buckle at the lower end of the dropper is connected with the dropper wire clamp.
Preferably, the insulating sleeve is made of polyimide, polyamideimide or polyetheretherketone.
The invention has the beneficial effects that: compared with the existing JTMH10 type dropper, the aramid fiber material and the aramid fiber composite material are used as materials of the dropper, so that the dropper has the advantages of larger tensile strength, better flexibility, wider allowable working temperature range, small expansion coefficient, higher wear resistance and more excellent performance indexes; the insulating material has excellent insulating property, so that normal operation current and short-circuit current on a contact wire can not flow through a dropper any more, electric sparks and electric arcs can not be generated at the position of a central ring of the dropper wire, a current-carrying ring is removed, and the structure of the dropper is simplified; the adoption of the aramid fiber material with ultra-light density and low modulus can improve the current collection quality of the bow net, and the slidable dropper structure can reduce the length of the dropper, further reduce the mass of the dropper, prolong the service life and reduce the operation and maintenance cost.
Additional aspects and advantages 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.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a structural diagram of a novel insulated dropper applied to an electrified railway according to embodiment 1 of the present invention.
Fig. 2 is a structural diagram of a novel insulated dropper applied to an electrified railway according to embodiment 2 of the present invention.
Fig. 3 is a structural diagram of a novel insulated dropper applied to an electrified railway according to embodiment 3 of the present invention.
Fig. 4 is a schematic diagram of a stiffness curve of a middle span of a catenary fitted in MATLAB after the novel insulating dropper is adopted according to an embodiment of the present invention.
Fig. 5 is a contact pressure curve diagram between bow nets of the simple chain-shaped suspension contact net according to the embodiment of the invention after the novel dropper is adopted.
Fig. 6 is a schematic diagram of the offline rate between the bownets at different speeds according to the embodiment of the present invention.
Wherein: 1-a carrier cable; 2-contact wires; 3-hanging string clamp; 4-a dropper wire; 41-free end of a dropper wire; 5-a snap ring; 6-ring buckling; 7-insulating sleeve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by way of the drawings are illustrative only and are not to be construed as limiting the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including 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 will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
For the purpose of facilitating an understanding of the present invention, the present invention will be further explained by way of specific embodiments with reference to the accompanying drawings, which are not intended to limit the present invention.
It should be understood by those skilled in the art that the drawings are merely schematic representations of embodiments and that the elements shown in the drawings are not necessarily required to practice the invention.
Example 1
As shown in fig. 1, embodiment 1 of the present invention provides a novel insulated dropper for an electrified railway, including a dropper wire 4 slidably disposed on a carrier cable 1, where the dropper wire 4 is formed by weaving a plurality of insulated monofilaments; the insulating monofilaments are aramid fibers.
The aramid fiber is Kevlar fiber, Twaron fiber, Technora fiber or Taparan fiber.
The dropper wire 4 is in an annular belt shape, one end of the annular dropper wire 4 is sleeved on the carrier cable 1, and the other end of the annular dropper wire 4 is sleeved on the dropper wire clamp 3.
Example 2
As shown in fig. 2, embodiment 2 of the present invention provides a novel insulated dropper for an electrified railway, including an insulated dropper wire 4 slidably disposed on a catenary wire 1, where the insulated dropper wire 4 is woven by a plurality of insulated monofilaments; the insulating monofilaments are nylon fibers, polyester fibers or ultra-high molecular weight polyethylene fibers and other synthetic fibers.
The free end 41 of the dropper wire 4 is clamped and connected with the dropper wire 4 through the snap ring 5 after being bent to form a buckle 6, the buckle 6 at the upper end is slidably sleeved on the carrier wire 1, and the buckle 6 at the lower end is connected with the dropper wire clamp 3.
Example 3
As shown in fig. 3, embodiment 3 of the present invention provides a novel insulated dropper for an electrified railway, including an insulated dropper wire 4 slidably disposed on a catenary wire 1, where the insulated dropper wire 4 is woven by a plurality of insulated monofilaments; the insulating monofilaments are aramid fibers, nylon fibers, polyester fibers or ultra-high molecular weight polyethylene fibers and the like.
The aramid fiber is Kevlar fiber, Twaron fiber, Technora fiber or Taparan fiber.
The free end 41 of the dropper wire 4 is clamped and connected with the dropper wire 4 through a clamping ring 5 after being bent to form a buckle 6, an insulating sleeve 7 is slidably arranged on the carrier cable 1, the buckle 6 at the upper end of the dropper wire 4 is sleeved on the insulating sleeve 7, and the buckle 6 at the lower end of the dropper wire 4 is connected with the dropper wire clamp 3.
The insulating sleeve 7 is made of polyimide, polyamide-imide or polyether ether ketone.
Comparative experiment
After the novel dropper is adopted, the mass of the hanger at the hanging point is reduced, the hanger is easier to deform due to the low modulus of the dropper, the lifting amount of the hanger at the hanging points at the head and the tail is increased, and the rigidity is reduced. The stiffness at other points in the span is slightly reduced and the variation is not significant due to the influence of the simple chain-like suspended contact net structure. Therefore, after the simple chain-shaped suspension contact net adopts the novel hanger, the rigidity value near the first and last hangers can be obviously reduced, the influence of hard points at the suspension point of the hanger is reduced, and the rigidity of the contact net becomes more uniform.
The following discusses the change in stiffness of a simple catenary suspension system using a new type of dropper and a JTMH10 type dropper. The stiffness curve of the middle span of the catenary was fitted in MATLAB by the lagrange difference method, and the result is shown in fig. 4.
As can be seen from fig. 4, after the simple chain-shaped suspension contact system adopts the novel dropper, the rigidity value near the suspension points of the first dropper and the last dropper is obviously reduced, because the mass at the suspension points of the dropper is reduced after the novel dropper is adopted, the dropper is easier to deform due to the low modulus of the dropper, the lifting amount at the suspension points of the first dropper and the last dropper is increased, and the rigidity is reduced. The stiffness at other points in the span is slightly reduced and the variation is not significant due to the influence of the simple chain-like suspended contact net structure. Therefore, after the simple chain-shaped suspension contact net adopts the novel hanger, the rigidity value near the first and last hangers can be obviously reduced, the influence of hard points at the suspension point of the hanger is reduced, and the rigidity of the contact net becomes more uniform.
Under the condition that the running speeds of the high-speed train are 350km/h and 450km/h respectively, the bow net contact pressure curve of the simple chain-shaped suspension contact net adopting the novel dropper is shown in fig. 5. FIG. 5(a) is a graph showing contact pressure between pantograph and catenary curves at a running speed of 350km/h, and FIG. 5(b) is a graph showing contact pressure between pantograph and catenary curves at a running speed of 450 km/h.
As can be seen from figure 5(a), under the running speed of 350km/h, the novel dropper has obvious effect on reducing the contact pressure near the hanging point of the dropper, the gradient and the amplitude of the contact pressure curve between the pantograph and the catenary are reduced, and the probability of offline of the pantograph and the catenary is reduced. It can be seen from fig. 5(b) that at the running speed of 450km/h, the gradient of the contact pressure curve between the pantograph and the net is obviously increased, the point where the contact force is zero is obviously increased, and along with the increase of the running speed, the novel dropper can obviously reduce the gradient and the change amplitude of the contact pressure between the pantograph and the net which are simply and simply hung in a chain shape. Therefore, the novel hanger plays an important role at higher running speed of the railway in the future.
The rigidity of the simple chain-shaped suspension contact net adopting the novel dropper is subjected to data statistics, and the elastic difference coefficient of the contact net is calculated, and the result is shown in table 1.
TABLE 1
As can be seen from Table 1, after the novel suspension string is adopted, the data statistics value of the rigidity of the overhead line system is reduced, the maximum value is reduced most obviously, and the minimum value of the rigidity is changed less because the maximum value of the rigidity of the overhead line system is arranged at the position of the first suspension string and the last suspension string and the minimum value is arranged at the position of the middle part of the span. The rigidity unevenness of the contact net is reduced from 41.46% to 38.56%, and the rigidity distribution of the contact net becomes more gentle.
The contact pressure between bow nets of the simple chain-shaped suspension contact net is subjected to data statistics at the running speeds of 350km/h and 450km/h, and the results are shown in table 2.
TABLE 2
As can be seen from Table 2, after the dropper material adopts Kevlar29, the maximum value of the contact pressure is greatly reduced, and the advantage of the novel dropper in reducing the maximum value is more obvious under the condition of higher speed, although the speed is improved by 100km/h, the maximum value of the contact pressure is only increased by 17N, compared with the maximum value of the original dropper increased by 300N, the advantage is more prominent, the standard deviation of the contact pressure is also obviously reduced, and the contact pressure dispersion degree under the condition of higher speed is smaller. Therefore, as can be seen from data statistics, the novel hanger is more obvious in improvement of the current collection quality of the bow net of the simple chain-shaped suspension at higher speed.
In a simple chain-shaped suspended pantograph system, the probability of occurrence of pantograph offline at a higher speed is greatly increased, and the offline rate between pantograph nets at different speeds is calculated, and the result is shown in fig. 6.
As can be seen from FIG. 6, in the operating speed range of 350km/h to 450km/h, the offline rate of the pantograph using the JTMH10 type dropper is higher than that of the novel dropper, and as the speed is continuously increased, the offline rate of the conventional dropper is obviously higher than that of the novel dropper. Therefore, after the simple chain-shaped suspension contact net adopts the novel dropper, the off-line rate between the pantograph nets and the increase rate of the off-line rate are reduced, and the method has important significance for reducing the occurrence of pantograph net off-line electric arcs, improving the electric energy quality of a high-speed train and prolonging the service life of a contact line and the service life of a pantograph.
In conclusion, the novel insulating dropper applied to the electrified railway comprehensively considers the root cause of dropper breakage, selects aramid fiber materials and aramid fiber composite materials as the materials of the dropper, completely meets the technical requirements of the dropper, and has the advantages of larger tensile strength, better flexibility, wider allowable working temperature range, small expansion coefficient, higher wear resistance and more excellent performance indexes of the dropper compared with the existing JTMH10 type dropper. And the novel hanger has excellent insulating property, so that normal operation current and short-circuit current on a contact wire can not flow through the hanger any more, electric sparks and electric arcs can not be generated at the central ring of the hanger, a current-carrying ring is removed, and the structure of the hanger is simplified. Meanwhile, due to the adoption of the aramid fiber material with ultra-light density and low modulus, the current collection quality of the bow net can be improved, the length of a dropper line can be reduced by the aid of the slidable dropper structure, and the weight of the dropper is further reduced.
In practical applications, the material for making the insulating monofilament of the insulating dropper is not limited to the aramid fiber such as Kevlar fiber, Twaron fiber, Technora fiber or Taparan fiber, but is also not limited to other synthetic fibers such as nylon fiber, polyester fiber, and ultra-high molecular weight polyethylene fiber, and those skilled in the art can specifically select the material for making the insulating dropper according to actual situations.
In practical applications, the material for manufacturing the insulating sleeve 7 is not limited to the polyimide, the polyamide-imide, or the polyetheretherketone, and those skilled in the art can select other insulating materials as the material for manufacturing the insulating sleeve 7 according to practical situations.
Those of ordinary skill in the art will understand that: the components in the device in the embodiment of the present invention may be distributed in the device in the embodiment according to the description of the embodiment, or may be correspondingly changed in one or more devices different from the embodiment. The components of the above embodiments may be combined into one component, or may be further divided into a plurality of sub-components.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a be applied to novel insulating dropper of electronic railway, is including connecting dropper line (4) on messenger wire (1), and dropper fastener (3) are connected to the other end of dropper line (4), contact wire (2), its characterized in that are connected in dropper fastener (3): the dropper line (4) is an insulation type dropper line.
2. The novel insulated dropper for electrified railways according to claim 1, wherein: the dropper wire (4) is formed by weaving a plurality of insulating monofilaments.
3. The novel insulated dropper for electrified railways according to claim 2, wherein: the insulating monofilaments are one or more of aramid fibers, nylon fibers, polyester fibers or ultrahigh molecular weight polyethylene fibers.
4. The novel insulated dropper for electrified railways according to claim 3, wherein: the aramid fiber is Kevlar fiber, Twaron fiber, Technora fiber or Taparan fiber.
5. The novel insulated dropper for electrified railways according to any one of claims 1 to 4, wherein: the dropper wire (4) is connected to the carrier wire (1) in a sliding manner.
6. The novel insulated dropper for electrified railways according to claim 5, wherein: the dropper (4) is in an annular belt shape, one end of the annular dropper (4) is sleeved on the carrier cable (1), and the other end of the annular dropper is sleeved on the dropper wire clamp (3).
7. The novel insulated dropper for electrified railways according to claim 5, wherein: the free end (41) of the dropper wire (4) is clamped and connected with the dropper wire (4) through a clamping ring (5) to form a buckle (6) after being bent, the buckle (6) at the upper end is sleeved on the carrier wire (1) in a sliding mode, and the buckle (6) at the lower end is connected with the dropper wire clamp (3).
8. The novel insulated dropper for electrified railways according to claim 7, wherein: the suspension cable is characterized in that an insulating sleeve (7) is sleeved on the carrier cable (1) in a sliding mode, a buckle (6) at the upper end of the suspension cable line (4) is sleeved on the insulating sleeve (7), and a buckle (6) at the lower end of the suspension cable line (4) is connected with the suspension cable clamp (3).
9. The novel insulated dropper for electrified railways according to claim 8, wherein: the insulating sleeve (7) is made of polyimide, polyamide-imide or polyether ether ketone.
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| CN201911059725.7A CN110723032A (en) | 2019-11-01 | 2019-11-01 | Novel insulating dropper applied to electrified railway |
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| CN201911059725.7A CN110723032A (en) | 2019-11-01 | 2019-11-01 | Novel insulating dropper applied to electrified railway |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2737929C1 (en) * | 2020-03-26 | 2020-12-07 | Владислав Сергеевич Кузьмин | Device for suspension of contact wire to bearing cable |
| CN112129554A (en) * | 2020-09-03 | 2020-12-25 | 北京交通大学 | High-speed railway bow net developments off-line experiment platform |
| RU2784847C1 (en) * | 2022-07-12 | 2022-11-30 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный университет путей сообщения" | Link string of contact suspension |
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| US20080047793A1 (en) * | 2004-07-16 | 2008-02-28 | Shrubsall Peter R | Dropper |
| CN206485222U (en) * | 2017-01-17 | 2017-09-12 | 山东齐林电力设备股份有限公司 | A kind of compound dropper line and new dropper |
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| GB775773A (en) * | 1954-06-23 | 1957-05-29 | British Insulated Callenders | Improvements in or relating to insulators for high tension overhead electric power lines |
| CN2526212Y (en) * | 2002-03-26 | 2002-12-18 | 丁仁宪 | Adjustable insulation suspension string |
| US20080047793A1 (en) * | 2004-07-16 | 2008-02-28 | Shrubsall Peter R | Dropper |
| CN206485222U (en) * | 2017-01-17 | 2017-09-12 | 山东齐林电力设备股份有限公司 | A kind of compound dropper line and new dropper |
| CN207466413U (en) * | 2017-09-15 | 2018-06-08 | 洛阳鑫迪铁道电气化有限公司 | A kind of slip Messenger wire hanging string clamp |
| CN209274407U (en) * | 2018-11-01 | 2019-08-20 | 3M创新有限公司 | For the auxiliary connection component of Contact Net's Suspension Chord device and including its dropper device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2737929C1 (en) * | 2020-03-26 | 2020-12-07 | Владислав Сергеевич Кузьмин | Device for suspension of contact wire to bearing cable |
| CN112129554A (en) * | 2020-09-03 | 2020-12-25 | 北京交通大学 | High-speed railway bow net developments off-line experiment platform |
| RU2784847C1 (en) * | 2022-07-12 | 2022-11-30 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный университет путей сообщения" | Link string of contact suspension |
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Application publication date: 20200124 |