CN202975164U - Device for measuring contact resistance of heavy-current switch - Google Patents
Device for measuring contact resistance of heavy-current switch Download PDFInfo
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- CN202975164U CN202975164U CN 201220702402 CN201220702402U CN202975164U CN 202975164 U CN202975164 U CN 202975164U CN 201220702402 CN201220702402 CN 201220702402 CN 201220702402 U CN201220702402 U CN 201220702402U CN 202975164 U CN202975164 U CN 202975164U
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Abstract
The utility model discloses a device for measuring contact resistance of a heavy-current switch. The device comprises a first static contact, a second static contact, a moving contact, an applying device, a connecting rod, a vertical lead rail and a bottom plate, wherein the first static contact and the second static contact are symmetrically fixed on the bottom plate relative to the moving contact; the moving contact moves on the vertical lead rail; the first static contact and the second static contact are respectively connected with an external current source and form a conductive loop; the applying device is fixed on the bottom plate through the connecting rod; the applying end of the applying device is connected with the top end of the moving contact; the applying device is used for applying pressure on the moving contact; and a contact resistor is formed at the contact part of the bottom end of the moving contact and the first static contact and the second static contact. The device disclosed by the utility model can accurately measure the contact resistance of the heavy-current switch, can primarily obtain the relation of the contact resistance and contact pressure, provides guidance for selection of contact pressure of the switch, and provides reliable foundation for warming calculation or simulation and the like of the contacts.
Description
Technical field
The utility model belongs to the technical field of measurement and test of contact resistance, more specifically, relates to a kind of device for measuring the high-current switch contact resistance.
Background technology
In the high-current switch structure that has designed, adopt the structure of multi-slice rectangle conductor crimping busbar, each contact is the 1200A left and right by electric current.The contact resistance resistance size at contact place has determined the through-current capability of disconnector, in design process, adopt the engineering calculation formula of contact resistance to calculate, yet the engineering calculation formula of contact resistance is relevant with many factors, as configuration of surface, material character, contact and concrete job operation etc.The contact that machines must carry out the measurement of contact resistance, completing correction and the improvement to contact resistance engineering calculation formula, and for selecting suitable contact that reference is provided.
Under same structure of contact terminal, there is impact in the size by electric current to the resistance of contact resistance.In engineering reality, current value is called large electric current greater than the electric current of 5A.At present in disclosed measuring contact resistance device, be mainly for the contact resistance as little electric currents such as appliance plugs.The measurement mechanism of the contact resistance of large electric current is basically for the electrical contact of cylindrical structure, yet the contact shape in engineering reality is changeable, and this kind measurement mechanism does not very adapt to.
The utility model content
For the defective of prior art, the purpose of this utility model is to provide a kind of device for measuring the high-current switch contact resistance, is intended to solve the more single problem of structure that prior art is measured large electric current measuring contact resistance device.
For achieving the above object, the utility model provides a kind of device for measuring the high-current switch contact resistance, comprises the first static contact, the second static contact, moving contact, force application apparatus, connecting link, upright guide rail and base plate; Described the first static contact and described the second static contact are fixed on described base plate with respect to described moving contact symmetry, and described moving contact moves on described upright guide rail; Described the first static contact is connected with the current source of outside respectively and forms a galvanic circle with described the second static contact; Described force application apparatus is fixed on described base plate by connecting link, and the force side of described force application apparatus is connected with the top of described moving contact, and described force application apparatus is used for exerting pressure to described moving contact; The bottom of described moving contact forms contact resistance with the part that described the first static contact contacts with the second static contact.
Further, described moving contact is plate-like structure, perpendicular to described the first static contact and described the second static contact setting.
Further, has one deck silvering in the bottom of described moving contact with the part that described the first static contact contacts with the second static contact.
Further, described force application apparatus comprises: the cross-over block that sets gradually, pressure transducer, cushion block, Compress Spring, Flat gasket and afterburning double-screw bolt, for the sleeve that provides support to Compress Spring, be fixed on pressing plate on connecting link by nut, be fixed on pressing plate and be used for rotatablely moving of afterburning double-screw bolt become straight-line nut; Described cross-over block is connected with the top of described moving contact, to the lower compression Flat gasket, the Flat gasket Compress Spring also will pass to moving contact by cushion block, pressure transducer and cross-over block with pressure successively and make described moving contact in the direction motion perpendicular to described the first static contact and the second static contact when afterburning screwing up stud.
Further, described base plate comprises fixed head and insulcrete, and described fixed head is used for whole proving installation; Described insulcrete is used for making the insulation of described galvanic circle and fixed head.
Further, described upright guide rail comprises hornblock and guide rail, and hornblock is used for guide rail is fixed on base plate, and the thickness of the width of described guide rail and described the first static contact and described the second static contact matches.
The device that the utility model provides can be measured the contact resistance of high-current switch more accurately, and can tentatively obtain the relation of contact resistance and contact, instruct and provide reliable foundation for the temperature rise calculating at contact place or emulation etc. for the selection of the contact pressure of switch provides.
Description of drawings
Fig. 1 is the structural representation that the utility model is used to measure the device of high-current switch contact resistance.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model provides a kind of measurement mechanism of high-current switch contact resistance, this test unit can be measured the contact resistance of high-current switch more accurately, and can tentatively obtain the relation of contact resistance and contact, instruct and provide reliable foundation for the temperature rise calculating at contact place or emulation etc. for the selection of the contact pressure of switch provides.
The purpose of this utility model is to provide a kind of measurement mechanism of contact resistance, and this device can record square structure of contact terminal at the contact resistance of different contacts.Fig. 1 shows the structure for the device of measuring the high-current switch contact resistance that the utility model provides, and for convenience of explanation, only shows the part relevant to the utility model:
The device that is used for measurement high-current switch contact resistance comprises the first static contact, the second static contact, moving contact, force application apparatus, connecting link, upright guide rail and base plate; Described the first static contact and described the second static contact are fixed on described base plate with respect to described moving contact symmetry, and described moving contact moves on described upright guide rail; Described the first static contact is connected with the current source of outside respectively and forms a galvanic circle with described the second static contact; Described force application apparatus is fixed on described base plate by connecting link, and the force side of described force application apparatus is connected with the top of described moving contact, and described force application apparatus is used for exerting pressure to described moving contact; The bottom of described moving contact forms contact resistance with the part that described the first static contact contacts with the second static contact.
In the utility model, two static contacts are fixed on the base plate 4 of insulation about the moving contact symmetry.Two static contacts are connected with the current source of outside by hole 2 respectively, form a galvanic circle, and it is to be measured that the contact resistance of moving contact and static contact contact portion 18 is test.Force application apparatus 8-17 is to exerting pressure in the middle of moving contact 6, the pressure size depends on amount of spring compression, the size of exerting pressure can record by pressure transducer 9, and force application apparatus is fixed on base plate by connecting link 19, makes force application apparatus move along the axis of connecting link by setting nut 17.
Wherein, moving contact is plate-like structure, perpendicular to described the first static contact and described the second static contact setting.Bottom at moving contact has one deck silvering with the part that described the first static contact contacts with the second static contact.With the static contact contact position, the very little silvering of one layer resistivity is arranged.Moving contact is staircase structure, and outshot is and the static contact contact portion that the very little silvering of one layer resistivity is arranged equally; Porose 2 part is for static contact being fixed on base plate 4, and the hole is connected with external power supply.Need to prove at this, why dynamic and static contact is designed to this structure, is to be consistent for the structure of contact terminal with high-current switch structure the inside.
In the utility model, force application apparatus comprises cross-over block 8, pressure transducer 9, cushion block 10, Compress Spring 11, Flat gasket 13 and the afterburning double-screw bolt 14 that sets gradually, for the sleeve 12 that provides support to Compress Spring 11, be fixed on pressing plate 16 on connecting link 19 by nut 17, be fixed on pressing plate 16 and be used for rotatablely moving of afterburning double-screw bolt 14 become straight-line nut 15; Described cross-over block 8 is connected with the top of described moving contact, to lower compression Flat gasket 13, the Flat gasket Compress Spring also will pass to moving contact by cushion block 10, pressure transducer 9 and cross-over block 8 with pressure successively and make described moving contact in the direction motion perpendicular to described the first static contact and the second static contact when afterburning double-screw bolt 14 is tightened.Its center platen 16 is for force application apparatus provides support, and its position at vertical direction can be adjusted; Nut 15 is fixed on pressing plate, and rotatablely moving of afterburning double-screw bolt become rectilinear motion.When afterburning double-screw bolt 14 is tightened to lower compression Flat gasket 13, Flat gasket Compress Spring 11, cushion block 10, pressure transducer 9, cross-over block 8 form a whole, and pressure is passed to moving contact.Sleeve 12 prevents the spring lateral deviation for the elements such as spring provide support.Connecting link 19 is fixed on base plate about the moving contact symmetry, for augmentor provides support.
In the utility model, base plate comprises fixed head 3 and insulcrete 4, and fixed head 3 is connected with insulcrete 4; 3 fixations of fixed head, fixing whole proving installation; 4 insulating effects of insulcrete guarantee the insulation of galvanic circle and fixed head (or greatly).
In the utility model, upright guide rail comprises hornblock 5 and guide rail 7, and hornblock is used for guide rail is fixed on base plate, and the thickness of the width of described guide rail and described the first static contact and described the second static contact matches.Rail sections guarantees that moving contact vertically moves.
Advantageous effects of the present utility model is to measure the contact resistance resistance size at high-current switch contact place, for the development of high-current switch provides certain guidance.
Those skilled in the art will readily understand; the above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. a device that is used for measuring the high-current switch contact resistance, is characterized in that, comprises the first static contact, the second static contact, moving contact, force application apparatus, connecting link, upright guide rail and base plate;
Described the first static contact and described the second static contact are fixed on described base plate with respect to described moving contact symmetry, and described moving contact moves on described upright guide rail; Described the first static contact is connected with the current source of outside respectively and forms a galvanic circle with described the second static contact;
Described force application apparatus is fixed on described base plate by connecting link, and the force side of described force application apparatus is connected with the top of described moving contact, and described force application apparatus is used for exerting pressure to described moving contact; The bottom of described moving contact forms contact resistance with the part that described the first static contact contacts with the second static contact.
2. device as claimed in claim 1, is characterized in that, described moving contact is plate-like structure, perpendicular to described the first static contact and described the second static contact setting.
3. device as claimed in claim 1 or 2, is characterized in that, has one deck silvering in the bottom of described moving contact with the part that described the first static contact contacts with the second static contact.
4. device as claimed in claim 1, it is characterized in that, described force application apparatus comprises: the cross-over block that sets gradually, pressure transducer, cushion block, Compress Spring, Flat gasket and afterburning double-screw bolt, for the sleeve that provides support to Compress Spring, be fixed on pressing plate on connecting link by nut, be fixed on pressing plate and be used for rotatablely moving of afterburning double-screw bolt become straight-line nut;
Described cross-over block is connected with the top of described moving contact, to the lower compression Flat gasket, Flat gasket compresses Compress Spring and will by cushion block, pressure transducer and cross-over block, pressure be passed to moving contact successively and makes described moving contact in the direction motion perpendicular to described the first static contact and the second static contact when afterburning screwing up stud.
5. device as claimed in claim 1, is characterized in that, described base plate comprises fixed head and insulcrete, and described fixed head is used for fixing whole device for measuring the high-current switch contact resistance; Described insulcrete is used for making described galvanic circle and fixed head insulation.
6. device as claimed in claim 1, is characterized in that, described upright guide rail comprises hornblock and guide rail, and hornblock is used for guide rail is fixed on base plate, and the thickness of the width of described guide rail and described the first static contact and described the second static contact matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702402 CN202975164U (en) | 2012-12-18 | 2012-12-18 | Device for measuring contact resistance of heavy-current switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702402 CN202975164U (en) | 2012-12-18 | 2012-12-18 | Device for measuring contact resistance of heavy-current switch |
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| Publication Number | Publication Date |
|---|---|
| CN202975164U true CN202975164U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220702402 Expired - Fee Related CN202975164U (en) | 2012-12-18 | 2012-12-18 | Device for measuring contact resistance of heavy-current switch |
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| CN (1) | CN202975164U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355086A (en) * | 2014-11-10 | 2015-02-18 | 浙江中技桩业有限公司 | Novel pressure transmitting mechanism |
| CN106226696A (en) * | 2016-10-11 | 2016-12-14 | 江苏省电力试验研究院有限公司 | Isolation switch contact contact condition simulation experiment system and method in a kind of GIS |
| CN107457462A (en) * | 2017-07-04 | 2017-12-12 | 合肥联森测控科技有限公司 | A kind of adjustable-pressure spring compression soldering welder and welding method |
| CN109856434A (en) * | 2019-03-27 | 2019-06-07 | 昆山福烨电子有限公司 | A kind of economical contact resistance value detection needle |
| CN110007151A (en) * | 2019-04-16 | 2019-07-12 | 苏州浪潮智能科技有限公司 | A kind of method and device of contact resistance between measurement different medium |
| CN110320408A (en) * | 2019-07-31 | 2019-10-11 | 贵州振华华联电子有限公司 | A kind of Miniature rotary switch measuring contact resistance device |
| CN112763902A (en) * | 2020-12-28 | 2021-05-07 | 温州大学 | Contact pressure checking method for contact pair |
-
2012
- 2012-12-18 CN CN 201220702402 patent/CN202975164U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355086A (en) * | 2014-11-10 | 2015-02-18 | 浙江中技桩业有限公司 | Novel pressure transmitting mechanism |
| CN104355086B (en) * | 2014-11-10 | 2016-08-17 | 浙江中技桩业有限公司 | A kind of pressure transferred structure |
| CN106226696A (en) * | 2016-10-11 | 2016-12-14 | 江苏省电力试验研究院有限公司 | Isolation switch contact contact condition simulation experiment system and method in a kind of GIS |
| CN107457462A (en) * | 2017-07-04 | 2017-12-12 | 合肥联森测控科技有限公司 | A kind of adjustable-pressure spring compression soldering welder and welding method |
| CN109856434A (en) * | 2019-03-27 | 2019-06-07 | 昆山福烨电子有限公司 | A kind of economical contact resistance value detection needle |
| CN110007151A (en) * | 2019-04-16 | 2019-07-12 | 苏州浪潮智能科技有限公司 | A kind of method and device of contact resistance between measurement different medium |
| CN110320408A (en) * | 2019-07-31 | 2019-10-11 | 贵州振华华联电子有限公司 | A kind of Miniature rotary switch measuring contact resistance device |
| CN112763902A (en) * | 2020-12-28 | 2021-05-07 | 温州大学 | Contact pressure checking method for contact pair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20141218 |
|
| EXPY | Termination of patent right or utility model |