CN102386508B - Plug unit for main circuit connector - Google Patents
Plug unit for main circuit connector Download PDFInfo
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- CN102386508B CN102386508B CN201110300654.2A CN201110300654A CN102386508B CN 102386508 B CN102386508 B CN 102386508B CN 201110300654 A CN201110300654 A CN 201110300654A CN 102386508 B CN102386508 B CN 102386508B
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- plug
- conductive sheet
- main circuit
- paired
- straight pin
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Abstract
The invention relates to the technical field of draw-out switch equipment, in particular to a plug unit for a main circuit connector, which comprises a fixed bracket, paired plug conducting strips, spring pieces and cylindrical pins; the paired plug conducting strips are inserted in the fixed bracket; the socket ends of the paired plug conducting strips are separated into socket openings; the cylindrical pins are fixed to the fixed bracket and are located between the paired plug conducting strips; the plug conducting strips are provided with arc grooves matched with the cylindrical pins, and the plug conducting strips arranged at the left and right sides take the cylindrical pins as deflection centers; the spring pieces are disposed among the outer side surfaces of the plug conducting strips and the fixed bracket; and a compact force is formed between the paired plug conducting strips. The plug unit for the main circuit connector has the advantages that: friction force of the connector opened by expansion is reduced by cooperation of the cylindrical pins and the plug conducting strips, so that the plug unit has high reliability and large contact pressure.
Description
Technical field
The present invention relates to draw out switchgear technical field, particularly a kind of main circuit switch plug assembly.
Background technology
Main circuit switch is the electrical equipment auxiliary that in draw out switchgear, drawer unit feeds out for main circuit power feed.By passing in and out being connected of two groups of main circuit plugs and bus and output socket, inlet wire is connected with switch upper end, and outlet is connected with switch lower end, and the feed of realizing drawer unit main circuit power feeds out.
Draw out switchgear is from the mid-80, domestic industry is from external imported technology, after 1994, domestic industry has the cabinet technology of independent development, and the structural principle manufacturing process of main circuit switch, performance index must meet industry standard and the application specific standard requirement of GB7251.1, JB/T9661, JB/T10323 main circuit switch.The draw out switchgear cabinet of Chinese market application is at present a very large market, it becomes the main equipment of low-voltage distribution control appliance, smart machine, relates to the extensive use of place application nuclear power, subway, power plant, offshore drilling platform and civil buildings and large industrial enterprise and intelligent control device.
Draw out switchgear has had 20 years in sector application, takes a broad view of structure design principle, technique manufacturing structure, material consumption in main circuit switch.Comprehensive analysis: ABB MNS2.0 blade inserting plug construction, tie point area is too little, and spring is U-shaped structure, and contact is less than normal; Siemens 8BT cabinet type main circuit plug is similarly the U-shaped spring of blade inserting structure, and plug pressure is less than normal; The okken cabinet main circuit plug structure of Shi Naite company is comparatively superior, but it has adopted the stainless steel material of 1.0mm to make spring.The main circuit plug of Zhe San major company structure, by measuring pressure of sensor instrument test plug contact, one group of Spring connector plug contact is 50-55N.98 years exploitation main circuit plugs of our company, the patent No. is the C type Spring connector plug of ZL98227797.0, ZL98227798.9, one group of Spring connector plug contact is 50-53N.One group of spring of C type plug construction that in market application, a plurality of auxiliary factory produces only has 20-35N.
Main circuit plug structure can determine the contact of plug.Certainly the key factor that has manufacturing process can be recognized one group of plug below spring contact pressure 55N from application, is applied in motor start-up scheme, falls that to hold coefficient very large, otherwise it holds immediate current that can't stand electric motor starting A * 5 times.By industry standard test reference value, 6-7 20-30S of electric motor starting, during main circuit patches, the resistance value large change that do not have, contact can not have large variation, otherwise temperature rise meeting is risen at double.
At present, main circuit switch, in the application of electric motor starting, burns plug phenomenon and has reflection everywhere, affects equipment security of operation and reliability.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of reliability high, the main circuit switch plug assembly that contact is large.
The technical solution adopted for the present invention to solve the technical problems is: a kind of main circuit switch plug assembly, comprise fixed support, paired plug conductive sheet, spring leaf and straight pin, paired plug conductive sheet is inserted in fixed support, between the inserted terminal of paired plug conductive sheet, be split up into grafting opening, straight pin is fixed on fixed support, straight pin is between paired plug conductive sheet, on plug conductive sheet, there is the arc groove coordinating with straight pin, the plug conductive sheet of the apportion left and right sides be take straight pin as deflection center, between the lateral surface of plug conductive sheet and fixed support, spring leaf is set, between paired plug conductive sheet, form thrust.
Spring leaf is linear springs sheet.
Straight pin is opening tube straight pin, and straight pin is inserted on fixed support.
Paired plug conductive sheet is symmetrical structure.
Fixed support is the fixed support of metal material compression molding.
Two of the lateral surface of plug conductive sheet has two and supports shoulder, and spring leaf is arranged on two and supports between shoulder.
Plug conductive sheet is one chip or stacked.
The invention has the beneficial effects as follows: straight pin coordinates with plug conductive sheet, plug must spreading when principle has solved plug conductive sheet and bus and pegs graft, spring forms corresponding required pressure, frictional force when straight pin has reduced connector spreading greatly with coordinating of arc groove, can not cause plug to inject the pressure because of spring in the dynamic process of bus effective travel 10-12mm and damage bus, coordinate mutual with plug conductive sheet of straight pin simultaneously, each group spring contact pressure 75-95N while guaranteeing static state.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described;
Fig. 1 is the structural representation of plug assembly of the present invention;
Fig. 2 is the structural representation that plug assembly of the present invention is connected with switch splicing ear row with bus;
Fig. 3 is 125A plug combination schematic diagram;
Fig. 4 is 250A plug combination schematic diagram;
Fig. 5 is 400A plug combination schematic diagram;
Fig. 6 is 630A plug combination schematic diagram;
Fig. 7 is 800A plug combination schematic diagram;
Fig. 8 is tri-grades of plug combination schematic diagrames of 125A;
Fig. 9 is tri-grades of plug combination schematic diagrames of 250A;
Figure 10 is tri-grades of plug combination schematic diagrames of 400A;
Figure 11 is tri-grades of plug combination schematic diagrames of 630A;
Figure 12 is tri-grades of plug combination schematic diagrames of 800A;
Figure 13 is 125A single-stage plug combination schematic diagram;
Figure 14 is 250A single-stage plug combination schematic diagram;
Figure 15 is 400A single-stage plug combination schematic diagram;
Figure 16 is 630A single-stage plug combination schematic diagram;
Figure 17 is that plug is installed on drawer unit combination schematic diagram;
In figure, 1. fixed support, 2. plug conductive sheet, 3. spring leaf, 4. straight pin, 5. bus, 6. switch splicing ear row, 7. supports shoulder.
Embodiment
As shown in Figure 1, a kind of main circuit switch plug assembly, fixed support 1 is metal material compression molding, as plug positioning holder, has enough mechanical strengths.Plug conductive sheet 2 is one chip or stacked, and two of the lateral surface of plug conductive sheet 2 has two and supports shoulder 7, and spring leaf 3 is arranged on two and supports between shoulder 7.Symmetrical paired plug conductive sheet 2 and spring leaf 3 coordinate in insertion 1 fixed support 1, spring leaf 3 is linear springs sheet, plug conductive sheet 2 middle-end one sides have a semicircle breach, when the paired plug conductive sheet 2 in left and right enters 1 fixed mount, two-sided plug blades middle-end has two semicircle breach, form a full circle, opening tube straight pin inserts fixed support 1 center through the full circle of the paired plug conductive sheet 2 in left and right, now plug conductive sheet 2, spring leaf 3 forms extruding with fixed support 1 left and right, front and back form fixing, plug is in positioning states, there are enough mechanical strengths.
Structural principle
Opening tube straight pin and plug conductive sheet 2 secure fit, tube latch is cylinder, plug conductive sheet 2 middle-ends form circular hole, plug conductive sheet 2 must spreading when principle has solved plug assembly and bus 5 and pegs graft, now spring leaf 3 forms corresponding required pressure, frictional force when straight pin 4 has reduced plug conductive sheet 2 spreading greatly with coordinating of circular hole, see Fig. 2, can not cause plug assembly to inject the pressure because of spring in the dynamic process of bus 5 effective travel 10-12mm and damage bus 5, see Fig. 3, straight pin 4 has formed the effective pressure of spring with mutual the coordinating of plug conductive sheet 2 simultaneously, each group spring contact pressure 75-95N while guaranteeing static state.
Further project and measures:
As shown in Fig. 3,4,5,6,7,8,9,10,11,12,13,14,15 and 16, the plug assembly forming by monolithic or lamination plug conductive sheet 2 separately or multilayer build-up combine with switch splicing ear row 6, and pack into and mould shell and assemble, form single-stage or three grades of connectors of 125A, 250A, 400A, 630A, 800A all size.As shown in figure 17, connector is arranged on drawer unit.
The technology guarantee of structural principle
Fixed support 1 adopts the metal material compression molding that has respective strengths, guarantee the part form and position tolerance consistency of its production in enormous quantities, plug conductive sheet 2 adopts high-quality T2 copper material, structure and area meet temperature rise and the heat radiation of current class, the become more meticulous plug conductive sheet 2 of mold tooling moulding, guarantees part consistency.Switch splicing ear is arranged 6 Glabrous thorns, and when plug assembly is connected with bus 5, effective contact-making surface reaches 0.03mm feeler gauge check 99%, guarantees to connect significant surface.Spring leaf 3 adopts high-quality spring steel, has special Technology for Heating Processing, guarantees 100,000 lots processed consistency of spring sizing hardness, hardness HRC48-52.Antirust processing is done on spring leaf 3 surfaces.Straight pin 4 adopts heat treatment opening tube cylinder steel pin, guarantees the mechanical strength after plug assembly is fixed, and ensures spring pressure gap.Because each part manufacture of plug assembly is meticulous, the contact of one group of plug assembly guarantees to be not less than 75N.
Adopt the description of the reliability guarantee of this plug assembly: one group of Spring connector plug has reached 85-95N, it just can bear the immediate current bearing value of motor A * 5 times, the problem that plug spring fatigue, resistance value strengthen at double, temperature rise raises at double that can not cause because motor repeatedly starts and burn out plug.The equipment that ensured security reliability operation in normal service life, especially for intelligent control unit, if plug is accidents caused, is short-circuited, and intelligent object also can cause damage, loses larger.
Be that this plug assembly is through initial sample verification experimental verification below.
Mechanical endurance test: standard is 500 times, tests 2000 times, and result spring is without distortion, the grafting opening two-sided 0.15mm that weares and teares, and shiny surface degree increases, and observed pressure reduces 1.5%.
Temperature rise test after mechanical endurance: standard is 50K, actual measurement temperature rise 125A is that 28K, 250A are that 35K, 400A are that 42K, 630A are that 46K, 800A are 48K.
Shock test: 400A connector, 2000A impacts 6 times, each 10S, belt switch is done temperature rise after impacting 6 times again, and standard is 50K, actual measurement temperature rise 38-46K.
Plug bears motor instant starting currents A * 5 haplotype data: 125A specification connector is 675A, and 250A specification connector is 1250A, and 400A specification connector is 2000A, and 630A specification connector is 3150A, and 800A specification connector is 4000A.
The single-phase one group of spring contact pressure of plug current class contact data: 125A is 75-95N, the single-phase one group of spring contact pressure of 250A is 75-95N, the single-phase two groups of spring contact pressure of 400A are 150-190N, the single-phase three groups of spring contact pressure of 630A are 225-285N, and the single-phase four groups of spring contact pressure of 800A are 300-380N.
According to design principle and test data, verified the reasonability of this structure, performance meets the application standard requirement of complete set of equipments, and spring fatigue is durable in use, and electric property obtains reliable guarantee.
Claims (7)
1. a main circuit switch plug assembly, it is characterized in that: comprise fixed support (1), paired plug conductive sheet (2), spring leaf (3) and straight pin (4), paired plug conductive sheet (2) is inserted in fixed support (1), between the inserted terminal of paired plug conductive sheet (2), be split up into grafting opening, straight pin (4) is fixed on fixed support (1), straight pin (4) is positioned between paired plug conductive sheet (2), on plug conductive sheet (2), there is the arc groove coordinating with straight pin (4), it is deflection center that the plug conductive sheet of the apportion left and right sides (2) be take straight pin (4), between the lateral surface of plug conductive sheet (2) and fixed support (1), spring leaf (3) is set, between paired plug conductive sheet (2), form thrust.
2. main circuit switch plug assembly according to claim 1, is characterized in that: described spring leaf (3) is linear springs sheet.
3. main circuit switch plug assembly according to claim 1, is characterized in that: described straight pin (4) is opening tube straight pin, and straight pin (4) is inserted on fixed support (1).
4. main circuit switch plug assembly according to claim 1, is characterized in that: described paired plug conductive sheet (2) is symmetrical structure.
5. main circuit switch plug assembly according to claim 1, is characterized in that: described fixed support (1) is the fixed support of metal material compression molding.
6. according to the main circuit switch plug assembly described in claim 1,2,3,4 or 5, it is characterized in that: two of the lateral surface of described plug conductive sheet (2) has two and supports shoulder (7), and spring leaf (3) is arranged on two and supports between shoulder (7).
7. according to the main circuit switch plug assembly described in claim 1,2,3,4 or 5, it is characterized in that: described plug conductive sheet (2) is one chip or stacked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110300654.2A CN102386508B (en) | 2011-09-30 | 2011-09-30 | Plug unit for main circuit connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110300654.2A CN102386508B (en) | 2011-09-30 | 2011-09-30 | Plug unit for main circuit connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102386508A CN102386508A (en) | 2012-03-21 |
| CN102386508B true CN102386508B (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110300654.2A Expired - Fee Related CN102386508B (en) | 2011-09-30 | 2011-09-30 | Plug unit for main circuit connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102386508B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247331A (en) * | 2018-03-09 | 2019-09-17 | 南京大全电气研究院有限公司 | Packaged type line leading device |
| CN108598777A (en) * | 2018-06-15 | 2018-09-28 | 江苏德泽智能电气科技有限公司 | A kind of elastic spacing one of compact bus bar trough connection device busbar pin slot |
| KR102085676B1 (en) | 2018-11-21 | 2020-04-20 | 엘에스일렉트릭(주) | Plug assembly for power distribution board |
| FR3121314A1 (en) * | 2021-03-26 | 2022-09-30 | Schneider Electric Industries Sas | Set of external connection modules for an electrical connection cabinet and an electrical connection cabinet comprising at least one such external connection module |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201044336Y (en) * | 2007-04-09 | 2008-04-02 | 莫耀焕 | Main circuit switch |
| CN201051570Y (en) * | 2007-06-01 | 2008-04-23 | 莫耀焕 | Main circuit connection plug |
| CN201213206Y (en) * | 2008-07-09 | 2009-03-25 | 潘敏 | Main circuit connector |
| CN201278375Y (en) * | 2008-10-20 | 2009-07-22 | 江苏八达真空电气有限公司 | Plugging apparatus for electric switch |
| CN201523136U (en) * | 2009-06-26 | 2010-07-07 | 冯群侠 | Electrical socket connector |
| CN201562898U (en) * | 2009-12-08 | 2010-08-25 | 南京大全电气有限公司 | Horizontally placed primary plug-in board |
| CN202352864U (en) * | 2011-09-30 | 2012-07-25 | 常州新苑星电器有限公司 | Plug assembly for main circuit connector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2772978B1 (en) * | 1997-12-18 | 2000-01-21 | Schneider Electric Sa | FIXING TERMINAL AND ELECTRICAL CONNECTION MODULE FOR PLUG-IN CIRCUIT BREAKER |
| CN100468876C (en) * | 2006-12-31 | 2009-03-11 | 潘敏 | Contact unit for connector |
-
2011
- 2011-09-30 CN CN201110300654.2A patent/CN102386508B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201044336Y (en) * | 2007-04-09 | 2008-04-02 | 莫耀焕 | Main circuit switch |
| CN201051570Y (en) * | 2007-06-01 | 2008-04-23 | 莫耀焕 | Main circuit connection plug |
| CN201213206Y (en) * | 2008-07-09 | 2009-03-25 | 潘敏 | Main circuit connector |
| CN201278375Y (en) * | 2008-10-20 | 2009-07-22 | 江苏八达真空电气有限公司 | Plugging apparatus for electric switch |
| CN201523136U (en) * | 2009-06-26 | 2010-07-07 | 冯群侠 | Electrical socket connector |
| CN201562898U (en) * | 2009-12-08 | 2010-08-25 | 南京大全电气有限公司 | Horizontally placed primary plug-in board |
| CN202352864U (en) * | 2011-09-30 | 2012-07-25 | 常州新苑星电器有限公司 | Plug assembly for main circuit connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102386508A (en) | 2012-03-21 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20140226 Termination date: 20170930 |