CN220710034U - Glass fiber pulling rod and composite post insulator for railway - Google Patents
Glass fiber pulling rod and composite post insulator for railway Download PDFInfo
- Publication number
- CN220710034U CN220710034U CN202322291923.4U CN202322291923U CN220710034U CN 220710034 U CN220710034 U CN 220710034U CN 202322291923 U CN202322291923 U CN 202322291923U CN 220710034 U CN220710034 U CN 220710034U
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- glass fiber
- layer
- ring
- epoxy resin
- glass fibers
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 140
- 239000012212 insulator Substances 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 239000004744 fabric Substances 0.000 claims description 20
- 238000007598 dipping method Methods 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 9
- 238000012681 fiber drawing Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000009940 knitting Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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- Insulators (AREA)
Abstract
The utility model discloses a glass fiber drawing rod and a composite post insulator for railway, belonging to the overvoltage protection of cables, comprising: a ring outer layer with an annular cross section, wherein woven first glass fibers and first epoxy resin are arranged in the ring outer layer, and the first epoxy resin is distributed in a space outside the body of the first glass fibers of the ring outer layer; an inner layer having second glass fibers and second epoxy resin along an axial direction of the outer layer of the ring, the second epoxy resin being distributed in a space outside a body of the second glass fibers of the inner layer; the inner layer is located in the accommodating cavity in the middle of the outer ring layer, the outer ring layer is connected with the inner layer, the first glass fiber can be regarded as being composed of a plurality of small sections of straight glass fibers, the small sections of straight glass fibers are distributed in all directions, the outer ring layer can bear loads in all directions, and the bending load capacity of the pulling rod is enhanced.
Description
Technical Field
The utility model belongs to cable overvoltage protection, and particularly relates to a glass fiber pulling rod and a composite post insulator for a railway.
Background
The composite post insulator is suitable for outdoor running power equipment and devices in an alternating current system, is particularly suitable for dirty areas, can effectively prevent pollution flashover accidents, is not easy to break, reduces maintenance workload in running, and is a new-generation insulator product with excellent performance.
The composite post insulator consists of a silicone rubber umbrella skirt, an epoxy glass fiber drawing rod and a flange. The mechanical property of the composite post insulator is mainly borne by the epoxy glass fiber drawing core rod, and the composite post insulator has good tensile and compressive properties.
In actual use, the composite insulator used by the electrified railway contact net is required to bear axial load and bending load at the same time, and the bending load is not optimized by the pulling rod in the conventional composite insulator.
Disclosure of Invention
The utility model aims to provide a glass fiber pulling rod and a composite post insulator for a railway, which are used for improving the inner structure of the glass fiber pulling rod so as to ensure that the composite insulator has better bending load bearing capacity.
In order to achieve the above object, the present utility model provides the following technical solutions:
a glass fiber draw bar comprising:
a ring outer layer with an annular cross section, wherein woven first glass fibers and first epoxy resin are arranged in the ring outer layer, and the first epoxy resin is distributed in a space outside the body of the first glass fibers of the ring outer layer;
an inner layer having second glass fibers and second epoxy resin along an axial direction of the outer layer of the ring, the second epoxy resin being distributed in a space outside a body of the second glass fibers of the inner layer;
the inner layer is positioned in the accommodating cavity in the middle of the outer layer of the ring, and the outer layer of the ring is connected with the inner layer.
The cross section of the outer layer of the ring is cylindrical, polygonal or elliptical.
The first glass fiber is a glass fiber woven sleeve.
The first glass fibers are formed by a plurality of glass fiber woven cloth strips, the length directions of the glass fiber woven cloth strips are in the same direction as the axial direction of the outer layer of the ring, and the side surfaces of the glass fiber woven cloth strips are sequentially adjacent to each other, so that the glass fiber woven cloth strips are surrounded to form an annular structure.
The first glass fiber consists of a plurality of knitting ropes, the length directions of the knitting ropes are in the same direction as the axial direction of the outer layer of the ring, and the side surfaces of the knitting ropes are sequentially adjacent to each other, so that the knitting ropes are enclosed into an annular structure.
The first glass fibers are plain, twill, and satin braids.
The first epoxy resin and the second epoxy resin are integrally formed.
The first glass fiber has a layer; or (b)
The first glass fiber is provided with a plurality of layers, and the first glass fibers of the layers are nested inside and outside.
The annular outer layer is formed by dipping the first glass fiber into the first epoxy resin for drawing;
and the inner layer is formed by dipping the second glass fiber into the second epoxy resin and drawing.
Compared with the prior art, the glass fiber drawing rod provided by the utility model is divided into the outer layer and the inner layer of the ring. The inner layer has the same function as the existing pulling rod and is used for bearing axial load. The cross section of the outer ring layer is annular, the outer ring layer is connected with the outer surface of the inner layer, the first epoxy resin is soaked in the woven first glass fiber filled in the outer ring layer and is drawn and molded into a whole, and the whole can bear axial load and loads in other directions other than the axial load. Because the first glass fiber is braided, after being fixed by the first epoxy resin, the first glass fiber can be regarded as being composed of a very large number of small sections of straight glass fibers, and the very large number of small sections of straight glass fibers are distributed in all directions, so that the outer layer of the ring can bear loads in all directions, particularly bending loads, and the capability of the bending load of the pulling rod is enhanced.
The utility model also provides a composite post insulator for a railway, which comprises the glass fiber pulling rod.
Compared with the prior art, the composite post insulator for the railway has the beneficial effects the same as those of the glass fiber pulling rod in the technical scheme, and the description is omitted here.
Drawings
FIG. 1 is a front view of one embodiment of a glass fiber pulling bar of the present utility model;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a front view of another embodiment of a glass fiber draw bar of the present utility model;
FIG. 4 is a front view of one embodiment of a glass fiber draw bar of the present utility model;
fig. 5 is a front view of the composite post insulator for railway of the present utility model;
FIG. 6 is a schematic view in the direction A of FIG. 5;
fig. 7 is a schematic diagram of direction B of fig. 5.
Reference numerals: 1. pulling out a rod; 11. an outer layer of the ring; 111. the method comprises the steps of carrying out a first treatment on the surface of the Weaving a cloth strip by using glass fibers; 112. glass fiber braided rope; 12. an inner layer; 2. fitting hardware; 3. a connecting flange; 4. umbrella skirt.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The utility model will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the utility model.
Referring to fig. 1 and 2, there is shown a schematic overall structure of a glass fiber pulling rod according to the present utility model, which comprises an outer ring layer 11 and an inner ring layer 12 connected to each other.
The structure of the inner layer 12 is the same as the structure of a pulling rod in the prior art, and is obtained by paving second glass fibers on a die, fully soaking the glass fibers with resin, and shaping and solidifying. The second glass fibers are glass fibers axially parallel to the outer ring layer 11.
The cross section of the outer ring layer 11 is annular, and the outer ring layer 11 is provided with first glass fibers and first epoxy resin which are woven, and the first epoxy resin is distributed in a space outside the body of the first glass fibers of the outer ring layer 11.
The cross-sectional shape of the ring outer layer 11 is annular. The annular outer ring is circular, and the tip point is avoided. The annular inner ring can be round, polygonal or elliptical to cope with different stresses. The first glass fibers laid in the outer ring layer 11 are woven, which may be woven glass fiber woven sleeves, glass fiber woven strips 111 or glass fiber woven ropes 112, unlike the prior art, and the weaving manner may be plain weave, twill weave and satin weave.
The inner layer 12 is positioned in the accommodating cavity in the middle of the ring outer layer 11, and the ring outer layer 11 is connected with the inner layer 12. In actual production, the annular outer ring layer 11 is formed by dipping first glass fiber into first epoxy resin for drawing; the inner layer 12 is formed by dipping a second epoxy resin into a second glass fiber. The first glass fiber has a layer; or the first glass fiber is provided with a plurality of layers, and the first glass fibers of the layers are nested inside and outside.
The following describes in detail an example in which the cross-sectional shape of the ring outer layer 11 is circular.
As shown in fig. 2, the first glass fiber in the outer ring layer 11 is a glass fiber woven sleeve, and during production, the second glass fiber needs to pass through the glass fiber woven sleeve, then the glass fiber woven sleeve and the second glass fiber in the middle are fully soaked with epoxy resin, and the glass fiber pulling rod disclosed by the utility model is obtained after shaping and curing. The first epoxy resin and the second epoxy resin are of an integral structure, the components of the first epoxy resin and the second epoxy resin are the same, the machine is filled with the epoxy resin at one time, wherein the first epoxy resin is filled into the outer layer 11 of the ring, and the second epoxy resin is filled into the inner layer 12 of the ring.
As shown in fig. 3, the first glass fibers in the outer ring layer 11 are a plurality of glass fiber woven cloth strips 111, the length direction of the plurality of glass fiber woven cloth strips 111 is the same as the axial direction of the outer ring layer 11, and the side surfaces of the plurality of glass fiber woven cloth strips 111 are sequentially adjacent to each other, so that the plurality of glass fiber woven cloth strips 111 are surrounded into an annular structure.
The inventor finds that the first glass fiber is a glass fiber woven sleeve, the second glass fiber needs to pass through the glass fiber woven sleeve, and the production efficiency is low in production. The glass fiber woven sleeve is not suitable for mass production, so that the technical scheme is changed, the glass fiber woven sleeves are replaced by a plurality of glass fiber woven cloth strips 111, and the bending load capacity of the ring outer layer 11 is provided in the form that the glass fiber woven cloth strips 111 are enclosed into a ring-shaped structure. When the glass fiber woven cloth strips 111 are used, the second glass fibers do not need to pass through the glass fiber woven sleeve, the glass fiber woven cloth strips 111 are distributed around the second glass fibers during production, and the machine simultaneously grabs the first glass fibers and the second glass fibers for production, so that the production efficiency is greatly improved.
As shown in fig. 4, when the first glass fiber is the glass fiber woven cloth 111 in actual production, the inventor finds that the glass fiber woven cloth 111 is easy to deviate and cannot form a regular ring outer layer 11, so that the glass fiber woven cloth 111 is replaced by a plurality of glass fiber woven ropes 112, the glass fiber woven ropes 112 are straightened after being stressed due to the circular cross section of the glass fiber woven ropes 112, and the glass fiber woven ropes 112 are easy to control the positions thereof, so that the glass fiber woven ropes 112 are completely positioned in the ring outer layer 11, and the yield in production is greatly increased. During production, the plurality of glass fiber braided ropes 112 are distributed around the second glass fiber, and the machine simultaneously grabs the first glass fiber and the second glass fiber for production, so that the yield is greatly improved. The problem of more burrs on the outer surface of the pulling rod is avoided.
In summary, in the glass fiber drawing rod provided by the utility model, the glass fiber drawing rod is divided into an outer layer and an inner layer. The inner layer has the same function as the existing pulling rod and is used for bearing axial load. The cross section of the outer ring layer is annular, the outer ring layer is connected with the outer surface of the inner layer, the first epoxy resin is soaked in the woven first glass fiber filled in the outer ring layer and is drawn and molded into a whole, and the whole can bear axial load and loads in other directions other than the axial load. Because the first glass fiber is braided, after being fixed by the first epoxy resin, the first glass fiber can be regarded as being composed of a very large number of small sections of straight glass fibers, and the very large number of small sections of straight glass fibers are distributed in all directions, so that the outer layer of the ring can bear loads in all directions, particularly bending loads, and the capability of the bending load of the pulling rod is enhanced.
Referring to fig. 5-7, the utility model also discloses a rod-shaped composite insulator for an electrified railway overhead contact system, which comprises the glass fiber pulling rod.
The rod-shaped composite insulator for the electrified railway contact net specifically comprises a hardware fitting 2, an umbrella skirt 4 and a connecting flange.
Compared with the prior art, the composite post insulator for the railway has the beneficial effects the same as those of the glass fiber pulling rod in the technical scheme, and the description is omitted here.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A glass fiber draw bar comprising:
a ring outer layer with an annular cross section, wherein woven first glass fibers and first epoxy resin are arranged in the ring outer layer, and the first epoxy resin is distributed in a space outside the body of the first glass fibers of the ring outer layer;
an inner layer having second glass fibers and second epoxy resin along an axial direction of the outer layer of the ring, the second epoxy resin being distributed in a space outside a body of the second glass fibers of the inner layer;
the inner layer is positioned in the accommodating cavity in the middle of the outer layer of the ring, and the outer layer of the ring is connected with the inner layer.
2. The glass fiber draw bar of claim 1 wherein the outer ring layer is cylindrical in cross-section.
3. The glass fiber draw bar of claim 1 wherein the first glass fiber is a woven glass fiber sleeve.
4. The glass fiber pulling rod according to claim 1, wherein the first glass fiber is composed of a plurality of glass fiber woven cloth strips, the length directions of the plurality of glass fiber woven cloth strips are in the same direction as the axial direction of the outer ring layer, and the side surfaces of the plurality of glass fiber woven cloth strips are sequentially adjacent to each other so that the plurality of glass fiber woven cloth strips are enclosed into an annular structure.
5. The glass fiber pulling rod according to claim 1, wherein the first glass fiber is composed of a plurality of braided ropes, the length directions of the plurality of braided ropes are in the same direction as the axial direction of the outer ring layer, and the side surfaces of the plurality of braided ropes are sequentially adjacent to each other, so that the plurality of braided ropes form an annular structure.
6. The glass fiber draw bar of claim 1, wherein the first glass fibers are a plain weave, a twill weave, and a satin weave.
7. The glass fiber draw bar of claim 1, wherein the first epoxy and the second epoxy are integrally formed.
8. The glass fiber draw bar of claim 1 wherein the first glass fiber has a layer; or (b)
The first glass fiber is provided with a plurality of layers, and the first glass fibers of the layers are nested inside and outside.
9. The glass fiber draw bar of claim 1, wherein the annular outer ring layer is shaped by impregnating the first epoxy resin with the first glass fiber;
and the inner layer is formed by dipping the second glass fiber into the second epoxy resin and drawing.
10. A composite post insulator for railway, characterized in that it comprises the glass fiber pulling rod according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322291923.4U CN220710034U (en) | 2023-08-25 | 2023-08-25 | Glass fiber pulling rod and composite post insulator for railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322291923.4U CN220710034U (en) | 2023-08-25 | 2023-08-25 | Glass fiber pulling rod and composite post insulator for railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220710034U true CN220710034U (en) | 2024-04-02 |
Family
ID=90445567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322291923.4U Active CN220710034U (en) | 2023-08-25 | 2023-08-25 | Glass fiber pulling rod and composite post insulator for railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220710034U (en) |
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2023
- 2023-08-25 CN CN202322291923.4U patent/CN220710034U/en active Active
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