CN203966691U - The rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line - Google Patents
The rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line Download PDFInfo
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- CN203966691U CN203966691U CN201420396397.6U CN201420396397U CN203966691U CN 203966691 U CN203966691 U CN 203966691U CN 201420396397 U CN201420396397 U CN 201420396397U CN 203966691 U CN203966691 U CN 203966691U
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Abstract
The utility model relates to a kind of high tension electrical porcelain insulator.The rigid suspended insulator of resistant explosion-proof for a kind of urban track traffic subway contact line, comprise metal-ware, lower metal-ware and insulator porcelain body, the top of described insulator porcelain body is solid cylinder, in the middle of bottom, is hollow recess structure, and middle part is provided with a bell-jar full skirt; The mucilage binding face of described upper metal-ware mates and is hat-shaped with the top solid cylinder of insulator porcelain body, and the mucilage binding face of described lower metal-ware mates with the hollow recess in centre of insulator porcelain body lower surface.The rigid suspended insulator of the utility model resistant explosion-proof, insulator porcelain body and upper metal-ware and lower metal-ware are combined into as a whole by cement glue layer mucilage binding, the whole stretching resistance of product, counter-bending power mechanical performance are improved, can avoid simultaneously former like product the inconsistent porcelain body Decrepitation Phenomena causing of the incidental coefficient of expansion because of metal-ware and porcelain piece body.
Description
Technical field
The utility model relates to a kind of high tension electrical porcelain insulator, especially relates to the rigid suspended insulator of resistant explosion-proof for a kind of urban track traffic subway contact line.
Background technology
Fast development along with Chinese national economy and urban construction, China's one line, tier 2 cities resident population's is more and more, but due to the hysteresis of the existing capital construction in city, brought city management not catch up with the serious problems of growth requirement and urban traffic blocking thereupon.Congested in traffic problem China one line, tier 2 cities ubiquity, brings huge trouble to city dweller's work and life at present.Therefore, solve urban traffic congestion, development bus rapid transit has been the cardinal task that concerns national economy.
Due to urban light rail subway rapidly and efficiently and the feature that can make full use of the underground space, save urban land resource, existing a line, tier 2 cities and coastal cities, all want to take or taked related measure, wish by Development of Urban light rail transit and subway construction, to improve urban public transport environment.
At present, " the rigid suspended pin insulator of 1.5kV " using in urban rail transit in China subway circulation, generally adopts the version of " interior mucilage binding " to connect, and its product structure design is unreasonable, in use the following problem of ubiquity:
1, due to the expanded by heating coefficient of metal-ware, be far longer than the expanded by heating coefficient of insulator porcelain body, metal-ware is under the operational environment of low-voltage, large electric current, after expanded by heating, produce lateral expansion power, the compression of this expansive force and porcelain body only can not offset, thereby causes this " rigid suspended pin insulator " that porcelain body explosion occurs; When 2, the upper metal-ware bolt of product carries out mucilage binding in the upper surface of porcelain body with cement glue, be difficult to mucilage binding vertical, cause bolt under pulling force effect, to produce the effect of bending force, because the impact of power by bending easily makes one side of porcelain body that explosion occurs; 3, the configuration design creepage distance of product is not enough, and the magnitude of voltage of anti-corona is low, and the withstand voltage value under the close filth of geavy salt is low, and anti-pollution characteristic is poor, easily flashover, easily puncture; 4, the solid distance of porcelain piece body interior of product is short, in the situation that two ends cement glue makes moist for a long time, flashover, punch-through very easily occurs.
Above-mentioned all design defect, cause product mechanical performance index and electric property to refer to lowly, cause subway train on schedule the situation of safe operation happen occasionally, be difficult to meet quick, the safe operation needs of existing locomotive.
For this reason, before my company, once propose the art designs with rigid suspended porcelain insulator about urban track traffic subway, can effectively improve the problems referred to above.But the continuous propelling that environment for use requires and product technology is reformed in view of subway circulation, is still necessary to carry out deeper scientific approach.
Summary of the invention
The utility model is not enough for prior art, in the situation that not changing existing product specification requirements, has proposed the rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line that a kind of resistant is dirty, antiknock is split, mechanical strength is higher.
The technical scheme that the utility model adopts:
The rigid suspended insulator of resistant explosion-proof for a kind of urban track traffic subway contact line, comprise metal-ware (1), lower metal-ware (2) and insulator porcelain body (3), described insulator porcelain body (3) is combined as a whole with upper metal-ware (1) and lower metal-ware (2) mucilage binding, the top of described insulator porcelain body (3) is solid cylinder, in the middle of the bottom of insulator porcelain body, be hollow recess structure, the middle part of insulator porcelain body is provided with a bell-jar full skirt; The mucilage binding face of described upper metal-ware (1) mates and is hat-shaped with the top solid cylinder of insulator porcelain body (3), and the mucilage binding face of described lower metal-ware (2) mates with the hollow recess in centre of insulator porcelain body (3) lower surface.
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, the outer surface of described insulator porcelain body (3) has bright glaze layer, its porcelain body height is 87 ± 10mm, and the diameter of insulator porcelain body middle part bell-jar full skirt is 240 ± 20mm.
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, the umbrella rib structure of the sub-umbrella of described bell-jar full skirt along the root of porcelain main body to She2-6 road, the edge annular protrusion of full skirt, and the depth as shallow of other umbrella rib groove of depth ratio of the umbrella rib groove of the most close porcelain main body root.
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, insulator porcelain body (3) is combined by cement glue tack coat (4) mucilage binding with upper metal-ware (1) and lower metal-ware (2).
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, the mucilage binding face of the lower end of insulator porcelain body (3) and lower metal-ware (2) is designed to interior mucilage binding integrated structure, the cross sectional shape of described lower metal-ware (2) is " n " font, its outside mucilage binding face mates with the hollow recess in centre of insulator porcelain body (3) lower end, in described lower metal-ware (2) adopts by cement glue tack coat (4), mucilage binding mode mucilage binding connects, and the hollow cavity at lower metal-ware (2) center is provided with internal thread.
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, the mucilage binding face of the top of insulator porcelain body (3) and upper metal-ware (1) is designed to outer mucilage binding integrated structure; The lower end of described insulator porcelain body (3) is designed to the inside and outside mucilage binding integrated structure of combining with the mucilage binding face of lower metal-ware (2).
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, lower metal-ware (2) cross sectional shape " several " font that overlay claims of attaching most importance to, the metallic object protruding in the middle of it mates with the hollow recess in centre of insulator porcelain body (3) lower end, the annular recess of described lower metal-ware (2) bottom surrounds the sub-body circumference of insulator porcelain body (3), and the hollow cavity of the metallic object protruding in the middle of lower metal-ware (2) is provided with internal thread; Described lower metal-ware (2) adopts inside and outside associating mucilage binding mode mucilage binding to be connected with the hollow recess in centre and the sub-body circumference of insulator porcelain body (3) bottom by cement glue tack coat (4).
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, the screw rod height that protrude upper metal-ware (1) upper end is 55 ± 5mm, string diameter is 16mm.
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, the internal thread string diameter of the hollow cavity setting in the middle of lower metal-ware (2) is 16mm, the dark 37 ± 2mm of being of silk.
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, its overall height is 155 ± 5mm, between described upper metal-ware (1) and lower metal-ware (2) along the creepage distance of porcelain insulator surface between 280 ± 40mm.
The beneficial effects of the utility model:
1, the rigid suspended insulator of resistant explosion-proof for the utility model urban track traffic subway contact line, the upper-end part of driving of insulator porcelain body is solid cylinder, the upper-end part of driving of described insulator porcelain body and lower end part respectively with upper metal-ware and the lower metal-ware of hat-shaped, by cement glue layer mucilage binding, be combined into as a whole.The whole stretching resistance of product, counter-bending power mechanical performance improve, can avoid simultaneously former like product the inconsistent porcelain body Decrepitation Phenomena causing of the incidental coefficient of expansion because of metal-ware and porcelain piece body.
2, the rigid suspended insulator of resistant explosion-proof for the utility model urban track traffic subway contact line, the combination of upper metal-ware and insulator porcelain body upper-end part of driving is outer mucilage binding combination, can be in the situation that porcelain body height only has 87 ± 10mm, assurance reaches between 37mm to 57mm the effective solid porcelain body thickness of porcelain piece body interior, therefore avoided former like product that flashover easily occurs because solid porcelain body thickness is not enough, the problem puncturing, also can avoid cement surface exposed and cause and be subject to moisture effect to cause the flashover at this position upward simultaneously, puncture, Decrepitation Phenomena.
3, the rigid suspended insulator of resistant explosion-proof for the utility model urban track traffic subway contact line, the middle part of insulator porcelain body only arranges a bell-jar full skirt, and the umbrella concave surface of full skirt is provided with two circles or the dark umbrella rib of multi-turn structure is multiple tracks groove shape.The outer mucilage binding that a full skirt is conducive to upper and lower metal-ware is set, can improves the solid thickness of porcelain body inside, avoid wet sudden strain of a muscle, mist that between full skirt, globule line causes to dodge; Bell-jar full skirt has stronger self-cleaning ability and anti-pollution ability simultaneously; The umbrella concave surface of bell-jar full skirt is provided with two circles or the dark umbrella rib of multi-turn groove structure, can effectively guarantee or increase creepage distance, by 250 original mm, brought up between 320 mm, have that self-cleaning ability is strong, creepage distance is large, anti-pollution characteristic is good, under heavy fog, thunder and lightning, heavy rain, shoe ice condition condition, be difficult for flashover, be difficult for puncturing, corona inception voltage value is high, withstand voltage value advantages of higher under the close filthy condition of geavy salt.
4, the rigid suspended insulator of resistant explosion-proof for the utility model urban track traffic subway contact line, the screw rod of upper metal-ware is by locking with being connected of mucilage binding cap center of upper metal-ware, silk is joined, after welding part reason, be integrated upper metal-ware, adopt outer mucilage binding mode with the upper-end part of driving of insulator porcelain body, the screw rod of having avoided like product to occur when the interior mucilage binding screw rod with cement glue is eccentric, out of plumb problem, prevented that upper metal-ware is because of bias, out of plumb produces again the destruction of bending force and causes the phenomenon of one side porcelain body generation explosion of power by bending to occur under pulling force effect.
5, resistant explosion-proof rigid suspended insulator for the utility model urban track traffic subway contact line, the structural design of insulator compared with similar products, have volume little, lightweight, easy for installation, can exchange the advantages such as use.The top of insulator porcelain body and lower end are designed with respectively ring-shaped groove and the projection of concave and convex with the mucilage binding face of upper metal-ware and lower metal-ware.By cementing with the engagement of mucilage binding face, effectively raise product mechanical strength properties, product quality further improves, and extend the useful life of product.
accompanying drawing explanationfig. 1 is one of structural representation of the present utility model;
Fig. 2 is one of upper metal-ware structural representation of the rigid suspended insulator of the utility model;
Fig. 3 is one of porcelain insulator body structure schematic diagram of the rigid suspended insulator of the utility model;
Fig. 4 is one of lower metal-ware structural representation of the rigid suspended insulator of the utility model;
Fig. 5 is two of structural representation of the present utility model;
Fig. 6 be the rigid suspended insulator of the utility model lower metal-ware structural representation two;
Fig. 7 be the rigid suspended insulator of the utility model upper metal-ware structural representation two;
Fig. 8 be the rigid suspended insulator of the utility model porcelain insulator body structure schematic diagram two.
Number in the figure and represent meaning: 1, upper metal-ware, 2, lower metal-ware, 3, insulator porcelain body, 4, cement glue tack coat, 5, bell-jar full skirt, 6, packing ring, 7, screw rod, 8, hollow recess in the middle of the bottom of insulator porcelain body, 9, be the umbrella rib structure of multiple tracks channel form.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
Embodiment 1
Referring to Fig. 1～Fig. 4, the rigid suspended insulator of resistant explosion-proof for the utility model urban track traffic subway contact line, comprise metal-ware 1, lower metal-ware 2 and insulator porcelain body 3, described insulator porcelain body 3 is combined as a whole with upper metal-ware 1 and lower metal-ware 2 mucilage bindings, the top of described insulator porcelain body 3 is solid cylinder, in the middle of the bottom of insulator porcelain body, be hollow recess structure 8, the middle part of insulator porcelain body 3 is provided with a bell-jar full skirt 5; The mucilage binding face of described upper metal-ware 1 mates and is hat-shaped with the top solid cylinder of insulator porcelain body 3; The mucilage binding face of described lower metal-ware 2 mates with the hollow recess in centre of insulator porcelain body 3 lower surfaces.
Embodiment 2
The rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line described in the present embodiment, be with the difference of embodiment 1: the outer surface of insulator porcelain body 3 is provided with bright glaze layer, the height of insulator porcelain body is 87 ± 10mm, and the diameter of insulator porcelain body middle part bell-jar full skirt is 240 ± 20mm.
Embodiment 3
The rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line described in the present embodiment, be with the difference of embodiment 2: the umbrella rib structure of the sub-umbrella of described bell-jar full skirt along the root of porcelain main body to She2-6 road, the edge annular protrusion of full skirt, and the depth as shallow of other umbrella rib groove of depth ratio of the umbrella rib groove of the most close porcelain main body root.
Embodiment 4
Referring to Fig. 1～Fig. 4, the rigid suspended insulator of resistant explosion-proof for the urban track traffic subway contact line described in the present embodiment, the mucilage binding face of the top of insulator porcelain body 3 and upper metal-ware 1 is designed to outer mucilage binding integrated structure.The difference of itself and embodiment 3 is: as shown in Figure 4, lower metal-ware 2 cross sectional shapes " several " font that overlay claims of attaching most importance to, the metallic object protruding in the middle of it mates with the hollow recess in centre of insulator porcelain body 3 lower surfaces, the annular recess of lower metal-ware 2 bottoms surrounds the sub-body circumference of insulator porcelain body 3, and the hollow cavity of the metallic object protruding in the middle of lower metal-ware 2 is provided with internal thread; Described lower metal-ware 2 adopts inside and outside associating mucilage binding mode mucilage binding to be connected with the hollow recess in centre and the sub-body circumference of insulator porcelain body 3 bottoms by cement glue tack coat 4.
The rigid suspended insulator of resistant explosion-proof for described urban track traffic subway contact line, after mucilage binding, total height is 155mm left and right, and the height of wherein going up annex screw rod is 55mm, and the thickness of upper annex cap is 8mm, felt mattress 1mm between cap and porcelain body upper surface, lower annex base thickness 4mm.
The rigid suspended insulator of resistant explosion-proof for the utility model urban track traffic subway contact line, insulator porcelain body 3 is combined by cement glue tack coat 4 mucilage bindings with upper metal-ware 1 and lower metal-ware 2, between described upper metal-ware 1 and lower metal-ware 2 along the creepage distance of porcelain insulator surface between 280 ± 40mm.
Embodiment 5
Referring to Fig. 5, Fig. 6, the rigid suspended insulator of resistant explosion-proof for the urban track traffic subway contact line of the present embodiment, as different from Example 4: the mucilage binding face of the lower end of insulator porcelain body 3 and lower metal-ware 2 is designed to interior mucilage binding integrated structure, the cross sectional shape of described lower metal-ware 2 is " n " font, its outside mucilage binding face mates with the hollow recess 8 in centre of insulator porcelain body 3 lower ends, and in described lower metal-ware 2 adopts by cement glue tack coat 4, mucilage binding mode mucilage binding connects.
The internal thread string diameter of the hollow cavity setting in the middle of lower metal-ware 2 is 16mm, the dark 37 ± 2mm of being of silk.After insulator cementing, total height is 155 ± 5mm, and the thickness of upper metal-ware cap is 8mm, the felt mattress 1mm between cap and porcelain body upper surface, and porcelain body height 91mm, lower metal-ware bottom surface and porcelain body lower surface are flat.
Embodiment 6
Referring to Fig. 7, Fig. 8, the rigid suspended insulator of resistant explosion-proof for the urban track traffic subway contact line of the present embodiment, different from aforementioned each embodiment: the screw rod 7 that the cap of upper metal-ware 1 and its upper end arrange is split type, and screw rod passes roof from cap inside.Correspondingly, for ease of installing, now on the top of insulator porcelain body, be provided with recess, with the lower end nut of accommodating screw rod.
The rigid suspended insulator of resistant explosion-proof for the utility model urban track traffic subway contact line, the surface at the gluey position of mucilage binding position and metal-ware in porcelain piece, by anti-ion migrating technology, process, there is anti-ion migrating layer, the metal-ware electrolytic corrosion problem of having avoided product to produce because of ion migration.Possess cushioning effect and the moisture proof effect of general pitch simultaneously.Insulator body case surface is provided with the glaze layer of even light, and anti-pollution ability is stronger.Described bell-jar full skirt refers to that there is downward, outwardly directed structure the neighboring of insulator porcelain body.The exumbrella of bell-jar full skirt is that the edge from the root of porcelain main body to full skirt is slope downslide shape.Groove structure below the main diameter of insulator porcelain body and full skirt diameter (full skirt stretch out size) and full skirt (groove how many and the groove depth), has formed creepage distance jointly.In the situation that full skirt diameter has been determined, the larger and umbrella footpath of main diameter is stretched out less, and creepage distance is also less.Otherwise in the situation that full skirt diameter has been determined, the less and umbrella footpath of main diameter is stretched out larger, creepage distance is also larger.
Claims (10)
1. the rigid suspended insulator of resistant explosion-proof for a urban track traffic subway contact line, comprise metal-ware (1), lower metal-ware (2) and insulator porcelain body (3), described insulator porcelain body (3) is combined as a whole with upper metal-ware (1) and lower metal-ware (2) mucilage binding, it is characterized in that: the top of described insulator porcelain body (3) is solid cylinder, in the middle of the bottom of insulator porcelain body, be hollow recess structure, the middle part of insulator porcelain body is provided with a bell-jar full skirt; The mucilage binding face of described upper metal-ware (1) mates and is hat-shaped with the top solid cylinder of insulator porcelain body (3), and the mucilage binding face of described lower metal-ware (2) mates with the hollow recess in centre of insulator porcelain body (3) lower surface.
2. the rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line according to claim 1, it is characterized in that: the outer surface of described insulator porcelain body (3) is provided with bright glaze layer, the height of insulator porcelain body is 87 ± 10mm, and the diameter of insulator porcelain body middle part bell-jar full skirt is 240 ± 20mm.
3. the rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line according to claim 2, it is characterized in that: the umbrella rib structure of the sub-umbrella of described bell-jar full skirt along the root of porcelain main body to She2-6 road, the edge annular protrusion of full skirt, and the depth as shallow of other umbrella rib groove of depth ratio of the umbrella rib groove of the most close porcelain main body root.
4. according to the rigid suspended insulator of resistant explosion-proof for the urban track traffic subway contact line described in claim 1,2 or 3, it is characterized in that: described insulator porcelain body (3) is combined by cement glue tack coat (4) mucilage binding with upper metal-ware (1) and lower metal-ware (2).
5. the rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line according to claim 4, it is characterized in that: the mucilage binding face of the lower end of described insulator porcelain body (3) and lower metal-ware (2) is designed to interior mucilage binding integrated structure, the cross sectional shape of described lower metal-ware (2) is " n " font, its outside mucilage binding face mates with the hollow recess in centre of insulator porcelain body (3) lower surface, and in described lower metal-ware (2) adopts, mucilage binding mode is connected with insulator porcelain body mucilage binding by cement glue tack coat (4).
6. according to the rigid suspended insulator of resistant explosion-proof for the urban track traffic subway contact line described in claim 1,2 or 3, it is characterized in that: the mucilage binding face of the top of described insulator porcelain body (3) and upper metal-ware (1) is designed to outer mucilage binding integrated structure; The lower end of described insulator porcelain body (3) is designed to the inside and outside mucilage binding integrated structure of combining with the mucilage binding face of lower metal-ware (2).
7. the rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line according to claim 6, it is characterized in that: lower metal-ware (2) cross sectional shape " several " font that overlay claims of attaching most importance to, the metallic object protruding in the middle of it mates with the hollow recess in centre of insulator porcelain body (3) lower end, the annular recess of described lower metal-ware (2) bottom surrounds the sub-body circumference of insulator porcelain body (3), and the hollow cavity of the metallic object protruding in the middle of lower metal-ware (2) is provided with internal thread; Described lower metal-ware (2) adopts inside and outside associating mucilage binding mode mucilage binding to be connected with the hollow recess in centre and the sub-body circumference of insulator porcelain body (3) bottom by cement glue tack coat (4).
8. according to the rigid suspended insulator of resistant explosion-proof for the urban track traffic subway contact line described in claim 1,2,3,5 or 7, it is characterized in that: upper metal-ware (1) upper end is provided with the screw rod of protrusion, the height of described screw rod is 55 ± 5mm, and string diameter is 16mm.
9. the rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line according to claim 8, is characterized in that: the hollow cavity at lower metal-ware (2) center is provided with internal thread, and described internal thread string diameter is 16mm, the dark 37 ± 2mm of being of silk.
10. according to the rigid suspended insulator of resistant explosion-proof for the urban track traffic subway contact line described in claim 1,2,3,5,7 or 9, it is characterized in that: its overall height is 155 ± 5mm, between described upper metal-ware (1) and lower metal-ware (2) along the creepage distance of porcelain insulator surface between 280 ± 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420396397.6U CN203966691U (en) | 2014-07-18 | 2014-07-18 | The rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420396397.6U CN203966691U (en) | 2014-07-18 | 2014-07-18 | The rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line |
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| CN203966691U true CN203966691U (en) | 2014-11-26 |
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| CN201420396397.6U Withdrawn - After Issue CN203966691U (en) | 2014-07-18 | 2014-07-18 | The rigid suspended insulator of resistant explosion-proof for urban track traffic subway contact line |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078169A (en) * | 2014-07-18 | 2014-10-01 | 河南省德立泰高压电瓷电器有限公司 | Stain-resistant burst-preventing rigid suspension insulator for urban mass transit metro contact network |
| CN105097149A (en) * | 2015-09-17 | 2015-11-25 | 萍乡市长岭电瓷制造有限公司 | Pin-type porcelain insulator for line |
| CN105825978A (en) * | 2016-04-28 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | Insulator accessory for connecting subway overhead contact lines |
| CN108091457A (en) * | 2017-11-15 | 2018-05-29 | 宁国松岭电力设备有限公司 | A kind of anticreep insulator |
-
2014
- 2014-07-18 CN CN201420396397.6U patent/CN203966691U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078169A (en) * | 2014-07-18 | 2014-10-01 | 河南省德立泰高压电瓷电器有限公司 | Stain-resistant burst-preventing rigid suspension insulator for urban mass transit metro contact network |
| CN105097149A (en) * | 2015-09-17 | 2015-11-25 | 萍乡市长岭电瓷制造有限公司 | Pin-type porcelain insulator for line |
| CN105825978A (en) * | 2016-04-28 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | Insulator accessory for connecting subway overhead contact lines |
| CN108091457A (en) * | 2017-11-15 | 2018-05-29 | 宁国松岭电力设备有限公司 | A kind of anticreep insulator |
| CN108091457B (en) * | 2017-11-15 | 2024-03-22 | 宁国松岭电力设备有限公司 | Anti-drop insulator |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20160330 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |