CN202650973U - Novel insulating pull rod for breaker - Google Patents
Novel insulating pull rod for breaker Download PDFInfo
- Publication number
- CN202650973U CN202650973U CN 201220321994 CN201220321994U CN202650973U CN 202650973 U CN202650973 U CN 202650973U CN 201220321994 CN201220321994 CN 201220321994 CN 201220321994 U CN201220321994 U CN 201220321994U CN 202650973 U CN202650973 U CN 202650973U
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- CN
- China
- Prior art keywords
- hole
- blind hole
- last item
- circuit breaker
- pull bar
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a novel insulating pull rod for a breaker, comprising an insulating pull rod body, wherein the insulating pull rod body is prepared by a POM plastic steel material, thereby being lighter and stronger and being higher in insulating performance, and the weight of the insulating pull rod is reduced by more than 70% compared with an axle steel. The screw thread portion of one end of a copper sleeve is wrapped with an insulating sleeve through pyrocondensation, and then is rotatably connected with the screw thread hole of the insulating pull rod body, the screw thread portion and the screw thread hole are fixedly glued and connected by a screw thread fastening glue, such that the insulating sleeve is completely embedded and sealed in the screw thread hole, and the insulating performance of the insulating sleeve is enhanced; and a disc spring passes through the guide blind hole of one end of the copper sleeve, a press shaft passes through the disc spring and pushes and presses the disc spring, a plug limits the press shaft portion to move in the copper sleeve, the disc spring is embedded in the copper sleeve, such that the novel insulating pull rod is more beautiful and concise in profile, the plug is opened by a simple tool, and the number of the disc spring is adjusted to adjust the contact pressure value of the press shaft and a moving contact.
Description
Technical field
The utility model relates to railway single-pole vacuum circuit breaker control pull bar, particularly lightweight, insulation property are good, contact adjusting a kind of circuit breaker New insulated pull bar easily.
Background technology
The railway single-pole vacuum circuit breaker uses in the China railways electrical system in a large number, the single-pole vacuum circuit breaker that domestic a lot of producers all use in researching and developing for the railway system; The insulated tension pole intensity of single-pole vacuum circuit breaker is lower at present, and manufacturability is relatively poor, and surface creepage is apart from less; Excess of stroke spring all is Compress Spring, vacuum bubbles great force value contact requirement, so that the size of compression stress spring is large, and need to replace the new spring of the different coefficients of stiffiness during regulating spring power, therefore cause the wasting of resources, exposed outer being assembled on the insulated tension pole of spring adds insulating sleeve simultaneously, be subject to such environmental effects and accelerate to wear out the problem that causes appearance poor, mechanical performance also not to grow unstable and useful life.Xiamen Minghan Electric Co., Ltd. organizes R﹠D team's investigation and comparison analysis both at home and abroad about the quality of this series products, selects to hang scheme most to solve the existing problem of above-mentioned single-pole vacuum circuit breaker insulated tension pole.
The utility model content
That that the problem that exists for solving above-mentioned single-pole vacuum circuit breaker insulated tension pole, the utility model are intended to propose is easy to make, the power value is regulated is convenient, machinery and electric property is reliable, stable, a kind of circuit breaker New insulated pull bar of long service life.
For reaching above-mentioned purpose, the utility model proposes a kind of circuit breaker New insulated pull bar, a kind of circuit breaker New insulated pull bar, comprise an insulated tension pole body, it is characterized in that: the insulated tension pole body that adopts the POM plastic-steel material to make, the one end radially is provided with a pin-and-hole, and a bearing pin that can be connected with the switch cubicle mechanism case and pin-and-hole are pegged graft; Be drilled with a screwed hole on its other end is axial; One copper sheathing, one end is provided with the threaded portion that cooperates with the screwed hole spiral, one insulating case thermal shrinkable sleeve is connected on the threaded portion, the copper sheathing other end is axially arranged with a guiding blind hole, one last item cover has some dish springs to insert in the guiding blind hole, last item is provided with and is slidingly matched with the blind hole that leads and with a side of the spacing bulge loop in the guiding blind hole of dish spring, the plug that bulge loop opposite side sheathed one and last item are nested and are slidingly matched, plug is threaded with guiding blind hole peristome and cooperates, the spacing compact disc spring motion in the guiding blind hole of last item; The copper sheathing thermal shrinkable sleeve is connected to the threaded portion of insulating case and screws with screwed hole on the insulated tension pole body and be connected.
Evenly smear screw thread fastening glue on the insulating case that is socketed with in the copper sheathing threaded portion, screwed hole on copper sheathing threaded portion and the insulated tension pole body screws, be connected and fixed by the screw threads for fastening glue glued adhesion, make fully built-in being sealed in the screwed hole of insulating case, both increased insulating properties, can avoid again insulating case to be exposed to and accelerate aging speed in the air, greatly prolong useful life of the present utility model.
But described copper sheathing threaded portion end face is the sphere of a uniform electric field, screwed hole on copper sheathing threaded portion end face and the insulated tension pole body is fitted fully, avoiding both contact-making surface to produce floating potential causes surface discharge corrosion screwed hole and copper sheathing threaded portion and changes shape and size, make the copper sheathing threaded portion by screwed hole to the active force of edge bar body on same axis, make its machine driving stable work in work, reliable.
The end diametric plane that described last item exposes plug is provided with two planes; With the bayonet fittings face as the rotation last item of specific purpose tool.
The bulge loop that is slidingly matched with the guiding blind hole on the described last item directly upwards is provided with at least two square breach; Make bulge loop on the last item in the guiding blind hole during compact disc spring or during the resilience of dish spring, the guiding blind hole communicates with atmosphere by breach, the sensitivity reduction of avoiding last item to move in the guiding blind hole; The dish spring is built in the guiding blind hole and does not expose, and make this practical new and ingenious outward appearance more succinctly attractive in appearance, and it is extremely low affected by external environmental factor, and aging speed is slow, long service life; The dish spring is built in insulated tension pole inside simultaneously, can produce the contact of desirable just-off speed and assurance contact, and is convenient by increase and decrease dish spring quantity regulating power value.
Be provided with a unthreaded hole in the middle of the described plug, this unthreaded hole and last item are nested and are slidingly matched.
At least be provided with two air vent holes that communicate with the guiding blind hole on the described plug, make the guiding blind hole identical with ambient pressure through air vent hole and breach, the sensitivity of avoiding last item to move in the guiding blind hole reduces.
Described insulated tension pole body surface is provided with 16 ring umbrella skirt constructions at least, and its external insulation surface creepage distance is more than 900 millimeters, and insulated tension pole body industrial frequency withstand voltage reaches more than the 100kV.
The beneficial effects of the utility model are: the insulated tension pole body that adopts the POM plastic-steel material to make makes that it is lighter, intensity is large, insulating properties is high, and the utility model weight is compared with the axle steel and alleviated more than 70%; Screwed hole with the insulated tension pole body behind copper sheathing threaded one end section thermal shrinkable sleeve one insulating case spins, connect solid with line fastening glue gummed again, make fully built-in being sealed in the screwed hole of insulating case, to strengthen its insulation property, and the guiding blind hole of copper sheathing one end is inserted in the dish spring, last item passes and pushes up pressure dish spring, in copper sheathing, move the last item part is spacing by plug, the dish spring is built in and makes outward appearance of the present utility model more attractive in appearance succinct in the copper sheathing, open plug by light instrument, the contact value that the quantity of increase and decrease dish spring then can be regulated last item and moving contact easily.
Description of drawings
Fig. 1 is three-dimensional assembling structure decomposing schematic representation of the present utility model.
Among the figure:
10. the insulated tension pole body; 11. pin-and-hole; 12. screwed hole; 13. full skirt;
20. copper sheathing; 21. threaded portion; 211. sphere; 22. guiding blind hole; 221. peristome;
30. insulating case;
40. the dish spring;
50. last item; 51. bulge loop; 511. breach; 52. plane;
60. plug; 61. unthreaded hole; 62. air vent hole;
70. bearing pin;
80. screw thread fastening glue.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As
Fig. 1Shown a kind of circuit breaker New insulated pull bar comprises that one adopts the POM plastic-steel material to make
Insulated tension pole body 10, insulated tension pole body 10 1 ends radially are provided with the bearing pin 70 and pin-and-hole 11 grafting that a pin-and-hole 11, can be connected with the switch cubicle mechanism case; Be drilled with a screwed hole 12 on the other end of insulated tension pole body 10 is axial, insulated tension pole body 10 surfaces are provided with 16 ring full skirts, 13 structures at least, full skirt 13 structures make the external insulation surface creepage distance of insulated tension pole body 10 more than 900 millimeters, and insulated tension pole body industrial frequency withstand voltage reaches more than the 100kV; One
Copper sheathing 20One end is provided with the threaded portion 21 that cooperates with insulated tension pole body 10 upper screwed holes 12 spirals, but copper sheathing 20 threaded portions 21 end faces are the sphere 211 of a uniform electric field, copper sheathing 20 other ends are axially arranged with a guiding blind hole 22, and the peristome 221 of guiding blind hole 22 is the inner thread mouth of a hole enlargement; One
Last item 50Cover has some large rigidity
Dish spring 40Insert in the guiding blind hole 22, last item 50 is provided with and is slidingly matched with the blind hole 22 that leads and with a side of dish spring 40 spacing bulge loops 51 in guiding blind hole 22, bulge loop 51 footpath that is slidingly matched with guiding blind hole 22 on the last item 50 upwards is provided with two square breach 511, and bulge loop 51 opposite sides sheathed one and last item 50 are nested and are slidingly matched
Plug 60Be provided with a unthreaded hole 61 in the middle of the plug 60, this unthreaded hole 61 is nested with last item 50 and is slidingly matched, plug 60 is threaded with the peristome 221 of guiding blind hole 22 and cooperates, last item 50 spacing compact disc spring 40 motions in guiding blind hole 22, dish spring 40 is placed in the guiding blind hole 22 of copper sheathing 20, dish spring 40 is built in insulated tension pole body 10 inside, the pressure of the quantity regulating last item 50 by increase and decrease dish spring 40 is more convenient, and dish spring 40 can produce desirable just-off speed and guarantee the contact of last item 50 and contact, to satisfy in the Railway Electric the large requirement of contact that is in operation of the vacuum bubbles of circuit breaker, plug 60 is provided with two air vent holes 62 that communicate with guiding blind hole 22, make breach 511 and the air vent hole on the plug 60 62 on the bulge loop 51 be communicated with guiding blind hole 22, the air pressure of avoiding last item 50 to produce in the motion in guiding blind hole 22 is passed through the movement velocity of bulge loop 51 sluggish last items 50, affect the sensitivity of last item 50 motion in guiding blind hole 22, the end diametric plane that last item 50 exposes plug 60 is provided with two planes 52; One
Insulating case 30Thermal shrinkable sleeve is connected on copper sheathing 20 threaded portions 21, evenly smears on insulating case 30
Screw thread fastening glue 80Screwed hole 12 on copper sheathing 20 threaded portions 21 and the insulated tension pole body 10 screws, screwed hole 12 on copper sheathing 20 threaded portions, 21 end faces and the insulated tension pole body 10 is fitted fully, be connected and fixed by screw thread fastening glue 80 gummeds, insulating case 30 is built in the screwed hole 12 on the insulated tension pole body 10 fully, finishes assembly and connection of the present utility model.
The pin-and-hole 11 of insulated tension pole body 10 1 ends of the present utility model is connected with switch cubicle mechanism case (not shown in FIG.)
Bearing pin 70It is fixing to peg graft, and last item one end that exposes plug 60 unthreaded holes 61 links to each other with the connecting lever (not shown in FIG.) of movable contact of vacuum circuit breaker side.
The utility model last item 50 is pressed by the top, at plug 60 and copper sheathing 40 guiding lower compression dish springs 40, when last item 50 pressure are removed, dish spring 40 straight lines flick to the bulge loop 51 of last item 50 with till plug 60 contacts; The material of last item 50 can be selected No. 45 steel or 40CrV, hardness HRC=40～5 after quenching, and the surface smoothness of axle adds moderate lubrication oil more than 3.2 during assembling, reduce the friction of motion resistance of dish spring 40 as far as possible.The utility model is applicable to the insulated tension pole 31.5kV-630A～2500A-31.5kA of one pole railway vacuum circuit-breaker, and the size of dish spring 40 energy storages can be selected dish spring and the quantity of different model as required; 50 millimeters of the effective diameters of the utility model insulated tension pole body 10, its anti-pressure ability is strong, 90 millimeters of head maximum gauges, middle full skirt limit diameter is large, guarantees the surface creepage distance more than 900 millimeters, simultaneously, for the video disc spring can built-in installation provide condition; The utility model also serves as the usefulness of the insulated tension pole of three-phase vacuum breaker.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, those skilled in the art, in the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, therefore, all technical schemes that are equal to also should belong to category of the present utility model, are limited by each claim.
Claims (8)
1. a circuit breaker New insulated pull bar comprises an insulated tension pole body, it is characterized in that:
The insulated tension pole body that adopts the POM plastic-steel material to make, the one end radially is provided with a pin-and-hole, and a bearing pin that can be connected with the switch cubicle mechanism case and pin-and-hole are pegged graft; Be drilled with a screwed hole on its other end is axial;
One copper sheathing, one end is provided with the threaded portion that cooperates with the screwed hole spiral, one insulating case thermal shrinkable sleeve is connected on the threaded portion, the copper sheathing other end is axially arranged with a guiding blind hole, one last item cover has some dish springs to insert in the guiding blind hole, last item is provided with and is slidingly matched with the blind hole that leads and with a side of the spacing bulge loop in the guiding blind hole of dish spring, the plug that bulge loop opposite side sheathed one and last item are nested and are slidingly matched, plug is threaded with guiding blind hole peristome and cooperates, the spacing compact disc spring motion in the guiding blind hole of last item;
The copper sheathing thermal shrinkable sleeve is connected to the threaded portion of insulating case and screws with screwed hole on the insulated tension pole body and be connected.
2. a kind of circuit breaker New insulated pull bar as claimed in claim 1, it is characterized in that: evenly smear screw thread fastening glue on the insulating case that is socketed with in the copper sheathing threaded portion, screwed hole on copper sheathing threaded portion and the insulated tension pole body screws, and is connected and fixed by the screw threads for fastening glue glued adhesion.
3. a kind of circuit breaker New insulated pull bar as claimed in claim 1 is characterized in that: but described copper sheathing threaded portion end face is the sphere of a uniform electric field.
4. a kind of circuit breaker New insulated pull bar as claimed in claim 1, it is characterized in that: the end diametric plane that described last item exposes plug is provided with two planes.
5. a kind of circuit breaker New insulated pull bar as claimed in claim 1 is characterized in that: the bulge loop that is slidingly matched with the guiding blind hole on the described last item directly upwards is provided with at least two square breach.
6. a kind of circuit breaker New insulated pull bar as claimed in claim 1 is characterized in that: is provided with a unthreaded hole in the middle of the described plug, this unthreaded hole and last item are nested and are slidingly matched.
7. a kind of circuit breaker New insulated pull bar as claimed in claim 1 is characterized in that: be provided with at least two air vent holes that communicate with the guiding blind hole on the described plug.
8. a kind of circuit breaker New insulated pull bar as claimed in claim 1, it is characterized in that: described insulated tension pole body surface is provided with 16 ring umbrella skirt constructions at least, its external insulation surface creepage distance is more than 900 millimeters, and insulated tension pole body industrial frequency withstand voltage reaches more than the 100kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220321994 CN202650973U (en) | 2012-07-05 | 2012-07-05 | Novel insulating pull rod for breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220321994 CN202650973U (en) | 2012-07-05 | 2012-07-05 | Novel insulating pull rod for breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202650973U true CN202650973U (en) | 2013-01-02 |
Family
ID=47420040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220321994 Expired - Fee Related CN202650973U (en) | 2012-07-05 | 2012-07-05 | Novel insulating pull rod for breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202650973U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737906A (en) * | 2012-07-05 | 2012-10-17 | 厦门明翰电气股份有限公司 | Novel insulating pull rod of circuit breaker |
| CN106158497A (en) * | 2016-09-13 | 2016-11-23 | 亚洲电力设备(深圳)股份有限公司 | Vacuum circuit breaker |
-
2012
- 2012-07-05 CN CN 201220321994 patent/CN202650973U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737906A (en) * | 2012-07-05 | 2012-10-17 | 厦门明翰电气股份有限公司 | Novel insulating pull rod of circuit breaker |
| CN106158497A (en) * | 2016-09-13 | 2016-11-23 | 亚洲电力设备(深圳)股份有限公司 | Vacuum circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 361000 Fujian province Xiamen torch hi tech Zone (Xiangan) Hong Road Industrial Zone No. 9 Framingham Industrial Park Comprehensive Building 1 floor Patentee after: Xiamen Minghan Electric Co., Ltd. Address before: 361006, N207-N208 building, two floor, Albert building, pioneer zone, torch hi tech Zone, Xiamen, Fujian Patentee before: Xiamen Minghan Electric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20170705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |